МНОГОСЛОЙНАЯ ПОКРЫВНАЯ СИСТЕМА

Настоящее изобретение относится к многослойной системе для покрытия, включающей по меньшей мере один слой а) и по меньшей мере один слой b), где по меньшей мере один слой а) и по меньшей мере один слой b) имеют по меньшей мере одну общую для слоев границу. Слой а) включает композицию для покрытия а), содержащую по меньшей мере одно соединение с изоцианатной функциональной группой, основание со скрытой светочувствительностью и по меньшей мере одно соединение с тиольной функциональной группой. Слой b) включает водную композицию для покрытия b), включающую по меньшей мере 17 ммол/кг, в расчете на вес композиции для покрытия b), катализатора для реакции присоединения по меньшей мере одного соединения с тиольной функциональной группой и по меньшей мере одного соединения с изоцианатной функциональной группой. Также описан способ получения многослойной системы для покрытия, включающий стадии: (i) нанесения слоя b) на субстрат, (ii) перед нанесением или после нанесения слоя b) нанесение слоя а) ...

ВОДОРАСТВОРИМАЯ КОМПОЗИЦИЯ ДЛЯ ПОКРЫТИЯ, СОДЕРЖАЩАЯ СОЕДИНЕНИЯ С ТИОЛОВОЙ ФУНКЦИОНАЛЬНОЙ ГРУППОЙ

Изобретение относится к водорастворимой композиции для покрытия, содержащей а) полиол, b) полиизоцианатный сшиватель и с) соединение с тиоловой функциональной группой, в которой молярное отношение изоцианатных групп к тиоловым группам находится в диапазоне между 1:0,0001 и 1:0,4. Изобретение также относится к применению композиции для покрытия в качестве прозрачного или пигментированного наружного покрытия, основного покрытия, наполнителя, грунта или связующего вещества, в окраске и повторной окраске автомобилей и крупных транспортных средств и к набору для приготовления композиции для покрытия. Технический результат - получение композиции, обеспечивающей баланс высокой скорости затвердевания, длительной жизнеспособности и хорошего внешнего вида пленки для покрытия, приготовленной из нее. 6 н. и 11 з.п. ф-лы, 3 ил., 7 табл.

ПОЛИМОЧЕВИНО/ПОЛИТИОМОЧЕВИНОВЫЕ ПОКРЫТИЯ

Настоящее изобретение относится к композициям покрытия, содержащим полимочевину и политиомочевину, к способам их нанесения на подложку и к самой подложке, имеющей, по меньшей мере, на своей части покрытие из таких композиций. Полимочевина и политиомочевина, содержащиеся в заявленных композициях, получены из реакционной смеси, включающей: первый компонент, содержащий изоцианат и изоцианат-функциональные простой политиоэфир-полиуретан и/или политиоуретан; и второй компонент, содержащий амин; из реакционной смеси, которая содержит: первый компонент, содержащий изоцианат; и второй компонент, содержащий амин и амин/гидрокси-функциональный простой политиоэфир; и из реакционной смеси, включающей первый компонент, содержащий изоцианат и изоцианат-функциональные простой политиоэфир-полиуретан и/или политиоуретан; и второй компонент, содержащий амин и амин/гидрокси-функциональный простой политиоэфир, соответственно. Технический результат - получение композиций, покрытия из которых, нанесенные на ...

НЕВОДНАЯ ЖИДКАЯ КОМПОЗИЦИЯ ДЛЯ НАНЕСЕНИЯ ПОКРЫТИЯ

... 1. Неводная жидкая композиция для нанесения покрытия, содержащая:a) полиол,b) полиизоцианатный отвердитель,c) одно или несколько тиолсодержащих соединений,d) металлосодержащий катализатор отверждения для ускорения реакции присоединения изоцианатных групп и гидроксильных групп,e) основание, имеющее величину pKa по меньшей мере 7 и не взаимодействующее с изоцианатными группами со снижением основности, иf) одно или несколько содержащих кислотные группы соединений,где одно или несколько тиолсодержащих соединений содержится в количестве, обеспечивающем молярное отношение тиольных групп к атомам металла металлосодержащего катализатора отверждения, составляющее 1 или выше, и где основание содержится в молярном количестве, меньшем, чем молярное количество тиольных групп, и где молярное отношение кислотных групп и групп основания составляет 1:1 или выше.2. Композиция для нанесения покрытия по п. 1, где основание содержится в молярное количестве, равном или превышающем молярное количество атомов ...

ОТВЕРЖДАЕМЫЕ ПОД ДЕЙСТВИЕМ АКТИНИЧНОГО ИЗЛУЧЕНИЯ УРЕТАН/МОЧЕВИНА-СОДЕРЖАЩИЕ АЭРОКОСМИЧЕСКИЕ ПОКРЫТИЯ И ГЕРМЕТИКИ

Изобретение относится к отверждаемым под действием актиничного излучения композициям, содержащим политиолы и уретан/мочевиносодержащие полиалкенильные преполимеры. Предложена композиция для использования в качестве аэрокосмических покрытий и герметиков, содержащая уретансодержащий и/или мочевиносодержащий политиол (содержащий по меньшей мере одну уретановую или мочевинную группу в плитиоле) и уретансодержащий полиалкенильный преполимер, мочевиносодержащий преполимер или их комбинацию. Предложены также герметик и герметизирующая система, содержащие указанную композицию, способ герметизации детали с использованием указанного герметика и соответствующая деталь. Технический результат - быстрое затвердевание предложенной композиции. 6 н. и 9 з.п. ф-лы, 4 табл., 12 пр.

Prepn. of di:functional prepolymers contg. two isocyanate end gps. - by reacting di:isocyanate and di:thiol to form prepolymer

Diisocyanate is reacted with dithiol in a molar ratio of 10.0:1.0-10.0:9.0, pref. 10.0:5.0-10.0:9.0 to form a prepolymer of formula (A). In (A) X = average number; R, R' = (substd.) aliphatic, aromatic, araliphatic, cycloaliphatic, or other difunctional gp. e.g. ether or ester; and the two isocyanate gps. or two thiol gps. can be bound together. Pref. process is in the presence of solvents or diluents and/or catalysts e.g. tert. amines or metal complexes, pref. a medium without solvent or diluent. USE/ADVANTAGE - Prepolymers can be used to prepare composites, laminates, photoresists, adhesives, light-hardened printing or painting inks, networks, linear polymers, casting resins, overlays, and varnishes. Prepolymers have improved solubility, low soln. viscosity, low melt- and flow-range and existing reactive end gps. in utilisable concn. In an example, 8.412 go 2,2,4(2,4,4)-trimethyl hexamethylene diisocyanate were mixed with 3.646 g triglycoldithiol and 0.012 g pyridine. After 48 hours reaction ...

Kunststofflinse mit hohem Brechungsindex und Zusammensetzung für diese Linse

Merkaptoverbindung, Harz mit hohem Refraktionsindex, Linse und Verfahren zu ihrer Herstellung.

Polythioureas

Polythioureas Title cpds. of formula (where R is (cyclo)aliphatic., R1 is H or CH3; R2 is H a (cyclo)aliphatic or aromatic residue with 1 to 20 C atoms and n is integer 10-10000), is produced by reaction of a mercaptoamine of formula HS-R-NH2 with an olefinically unsatd. isocyanate H2C=C-N(R1)CO or an olefinically unsatd. carbamide acid chloride H2C=C(R1)-N(R3)-COCl (where R3 is a (cyclo)aliphatic or aromatic residue with is not >20 C atoms). Molar ratio of reactants is 1:1. Used for coatings for paper, wood, metal, textiles, binders, stabilisers for polymers.

PHOTOAKTIVIERBARE BESCHICHTUNGSZUSAMMENSETZUNG

INTERNE FORMTRENN-ZUSAMMENSETZUNGEN, ENTHALTEND PHOSPHATESTER

POLYMERISIERBARE VERBINDUNG MIT GERUCHSMASKIERENDE EIN HERSTELLUNGSVERFAHREN

Optical thermoplastic copolymer and production thereof

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

POLYMERIZE-CASH CONNECTION WITH SMELL-MASKING MEANS AND A PARFUM, AN OPTICAL LENS AND A MANUFACTURING PROCESS

BESCHICHTUNGSMASSE UND VERFAHREN ZU DEREN AUSHAERTUNG

POLARIZED ARTICLES AND MANUFACTURING PROCESS FOR IT

COATING COMPOSITION, CONTAINING A POLYISOCYANATE AND A POLYOLE

COATING COMPOSITION

A DISPERSED COMPONENT WITH METAL OXYGEN

HARD COAT COMPOSITION

WELL AT THE FORM LYING CLOSE COATING SYSTEMS.

CATALYST SALT ABSTENTION POLYMERIZE-CASH COMPOSITIONS FOR THE PRODUCTION OF THIOGRUPPENHALTIGER RESINS AND PROCEDURES FOR THE PRODUCTION OF ARTICLES FROM MENTIONED RESINS

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

POLYMERIZE-CASH CONNECTION WITH SMELL-MASKING MEANS AND A PARFUM, AN OPTICAL LENS AND A MANUFACTURING PROCESS

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

POLYMERIZE-CASH CONNECTION WITH SMELL-MASKING MEANS AND A PARFUM, AN OPTICAL LENS AND A MANUFACTURING PROCESS

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

POLYMERIZE-CASH CONNECTION WITH SMELL-MASKING MEANS AND A PARFUM, AN OPTICAL LENS AND A MANUFACTURING PROCESS

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

THIOLFUNKTIONELLE CONNECTIONS ABSTENTION AQUEOUS ONE COATING COMPOSITION

POLYMERIZE-CASH CONNECTION WITH SMELL-MASKING MEANS AND A PARFUM, AN OPTICAL LENS AND A MANUFACTURING PROCESS

POLYMERIZE-CASH CONNECTION WITH SMELL-MASKING MEANS AND A PARFUM, AN OPTICAL LENS AND A MANUFACTURING PROCESS

Non-aqueous crosslinkable composition

The present invention relates to a crosslinkable composition comprising a polyol, a polyisocyanate crosslinker, a catalyst for catalysing the reaction between -OH groups of said polyol and -NCO groups of said crosslinker, a tertiary acid of formula RR'R"CCOOH (I), wherein each R, R' and R" group, independently, is an alkyl, alkenyl, aryl or aralkyi group containing at least one carbon atom, with the proviso that two or three of the R, R' and R" groups can be linked to form a ring structure and wherein the R, R' and/or R" groups can be substituted, and optionally, a complexing agent containing at least one -SH group, as well as its use for making coatings having improved application properties.

PLASTIC LENSES HAVING A HIGH-REFRACTING INDEX AND PROCESS FOR THE PREPARATION THEREOF

PLASTIC LENS MADE FROM POLYISOTHIOCYANATE

Coating composition based on thiol-nco curing

SULFIDE-CONTAINING POLYTHIOLS

Process for production of (poly)thiol compound for use as optical material, and polymerizable composition comprising the compound

Disclosed is a process for production of a (poly)thiol compound for use as an optical material. The process comprises reacting an organic (poly)halogen compound or a (poly)alcohol compound with thiourea to produce an isothiuronium salt and hydrolyzing the isothiuronium salt to thereby produce the (poly)thiol compound, wherein the thiourea has a calcium content of 1.0% by weight or less.

Process for production of (poly)thiol compound for use as optical material, and polymerizable composition comprising the compound

Polythiourethane polymerizable composition and method for producing optical resin by using same

Disclosed are a resin composition excellent in dyability and resin strength, a resin obtained by curing such a resin composition, and an optical component. Specifically disclosed is a polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly)sulfide bond in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups.

POLYTHIOCARBAMATE LENSE MATERIAL

Sulfur-containing urethane-based resin composition, its resin, and optical element and lens comprising resin

POLYTHIOL COMPOUND, AND OPTICAL MATERIAL AND PRODUCT PRODUCED THEREFROM

Method of preparing an optical polymerizate

PROCESS FOR THE MANUFACTURE OF PLASTICS CONTAINING ESTER AND/OR URETHANE GROUPS

The present invention is concerned with a process for preparing aqueous dispersions from solid polymer precursors which are polyester or polyurethane oligomers containing both hydrophilic centers and cross-linking sites and subsequently coating substrates with the thus obtained dispersions. The aqueous dispersion is applied to a substrate and dryed with resultant cross-linking of the film.

POLYMERIZABLE COMPOSITIONS FOR MAKING THIO CONTAINING RESINS INCLUDING A SALT CATALYST AND PROCESS FOR MAKING THIO CONTAINING RESIN ARTICLES

The polymerizable compositions comprise: A) at least one polyiso(thio)cyanate monomer, and at least one polythiol monomer; or at least one episulfide compound and optionally one or more compounds having two or more functional groups capable of reacting with episulfide groups; and B) as polymerization catalyst, an effective amount of a salt of formula (MPm + Yn-), Y- is an anion such as the corresponding acid YH has a pKa fulfilling the condition 0.5 <= pKa <= 14 with the proviso that when the polymerizable compositions comprise an episulfide compound and MP+ is an ammonium group, the polymerizable composition also comprises an electro-donor compound. Application to the fabrication of optical articles, such as lenses.

LIQUID ORGANIC POLYISOCYANATES CONTAINING CARBOXYL AND/OR CARBOXYLATE GROUPS

METHOD OF PREPARING AN OPTICAL POLYMERIZATE

The present invention is directed to a novel method of preparing a polymerizate, which includes the step of polymerizing a two-component composition, which includes: a first component containing at least one polycyanate reactant having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof, the polycyanate reactant being the reaction product of: a polythiol monomer having at least two thiol groups, and a polycyanate monomer having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof; and a second component containing at least one polyamine reactant having at least two functional groups selected from primary amine, secondary amine and combinations thereof. The present invention is also directed to polymerizates prepared according to the method of the present invention. The present invention is further directed to photochromic articles that may be prepared from the polymerizates of the present invention.

LIGHT RESISTANT POLYURETHANE COMPOSITIONS

The invention relates to a composition, containing 10 to 50 wt% of at least one polyisocyanate a-1) based on hexamethylene diisocyanate, containing at least one oligomeric polyisocyanate based on hexamethylene diisocyanate and optionally monomeric hexamethylene diisocyanate, and 50 to 90 wt% of at least one polyisocyanate a-2) based on isophorone diisocyanate, containing at least one oligomeric polyisocyanate based on isophorone diisocyanate and optionally monomeric isophorone diisocyanate, with the stipulation that at least one of the components a-1) and a-2) additionally comprises monomeric isocyanate of the respective type mentioned, and at least one component containing sulfur. The aforementioned mixture of the special component containing isocyanate groups has been shown to improve the thermal and mechanical properties of a cured composition. Molded bodies produced in such a way are suitable in particular for producing eyeglass lenses due to said properties, among other things.

COATING PROCESS

A process of painting a motor vehicle which comprises; (i) selecting and mixing two or more pigmented base paints from a series of master colours in predetermined proportions so as to obtain a paint pack having a desired final colour, each base paint comprising a hydroxyl functional polymer, optionally also adding an unpigmented blending clear comprising a hydroxyl functional polymer, (ii) adding (a) a tin catalyst for the reaction between isocyanate groups and hydroxyl groups, and (b) a polyfunctional thiol having at least three thiol groups, optionally one or both of these components being added as part of the blending clear, (iii) either before or after the tin catalyst and the polyfunctional thiol are added, adding a hardener comprising a polyisocyanate crosslinker, so as to form a thermosetting pigmented coating composition, (iv) applying a layer of the composition so formed to the surface of a vehicle, and (v) causing or allowing the layer to dry and cure, whereby the coating composition ...

Verfahren zur Herstellung eines hochmolekularen Polyamids.

PROCEDURE FOR THE PRODUCTION OF COMPOSITE MATERIALS.

КОМПОЗИЦИЯ ПОКРЫТИЯ НА ОСНОВЕ ОТВЕРЖДЕНИЯ ТИОЛ-NCO

Композиция покрытия, содержащая один или несколько политиолов и один или несколько полиизоцианатов и латентный основный катализатор, который активируется с помощью влаги, где эквивалентное отношение NCO:SH составляет от 1:2 до 2:1. Латентный катализатор выбран из группы, включающей оксазолидин, альдимин, кетимин и енамин. Латентный катализатор присутствует в количестве до 20% в расчете на массу способного к отверждению материала. Композиция также содержит один или несколько фотоинициаторов в количестве до 4% в расчете на массу способного к отверждению материала.

КОМПОЗИЦИЯ ПОКРЫТИЯ, СОДЕРЖАЩАЯ ОДИН ИЛИ БОЛЕЕ ПОЛИТИОЛОВ, И ЕЕ ПРИМЕНЕНИЕ (ВАРИАНТЫ)

Раскрывается композиция покрытия, содержащая один или несколько политиолов и один или несколько полиизоцианатов и латентный основный катализатор, который активируется с помощью влаги, где эквивалентное отношение NCO:SH составляет от 1:2 до 2:1. Латентный катализатор выбран из группы, включающей оксазолидин, альдимин, кетимин и енамин. Латентный катализатор присутствует в количестве до 20% в расчете на массу способного к отверждению материала. Композиция также содержит один или несколько фотоинициаторов в количестве до 4% в расчете на массу способного к отверждению материала. Изобретение также относится к применению данной композиции в качестве грунтовочного покрытия при ремонте автомобилей, а также в качестве покрытия для бетонных полов.

Method for manufacturing polymerizable composition for optical material, and polymerizable composition for optical material

Polythiol, process for producing same, sulfur-containing urethane-base resin prepared from the polythiol, proces for producing the resin, and lens

Sulfur-containing urethane-based resin composition, its resin and optical element and lens comprising the resin thereof

NOVEL SULFUR COMPOUNDS AND NOVEL POLYMERS OBTAINED FROM THESE SULFUR COMPOUNDS.

Manufactoring process of made up polyamides with high molecular weight

FOUNDRY AGGREGATE BINDERS

Liquid organic polyisocyanates containing carboxyl and/or carboxylate groups

COATING COMPOSITION CURABLE BY PENETRATING STEAM COMPRISING A RESIN AND A CURING AGENT [...] MULTI-ISOCYANATE AND METHOD TO CURE IT

Polyadducts from isocyanates and cpds. contg. active hydrogen - used for insulation in building industry

Curable liquid unsatd thiol cpds contg. polar functional gps - cure to cross linked rubbery or rigid polythioethers

POLYISOCYANATE, PROCEEDED AND COMPOSES OF DEPARTURE OF PREPARATION OF CEPOLYISOCYANATE, AND USES OF THIS POLYISOCYANATE

L'invention concerne un composé polyisocyanate cyclique, de formule générale : dans laquelle k vaut de 0 à 2 et n vaut 0 ou 1, sous réserve que k et n ne valent pas tous les deux 0 en même temps, ainsi qu'un procédé et un composé de départ de préparation d'un tel polyisocyanate. L'invention concerne aussi des utilisations d'un tel polyisocyanate, à savoir une composition polymérisable qui contient un tel polyisocyanate et un composé à hydrogène mobile et qui donne, après polymérisation, une résine de type polyuréthane qui, notamment en raison de sa forte résistance à la chaleur, de son haut indice de réfraction et de son nombre d'Abbe élevé, ainsi que du fait que ces propriétés y sont très bien équilibrées, peut servir de matériau optique, en particulier pour la fabrication de verres organiques d'excellente qualité.

URETHANNE-POLYTHIOLS AND THEIR PREPARATION

COMPOSITION, POLYMERIZABLE COMPOSITION, RESIN, OPTICAL COMPONENT, AND METHOD FOR PRODUCING THE COMPOSITION

NOVEL POLYISOCYANATE COMPOUND, METHOD FOR PRODUCING THE SAME, AND USES THEREOF

HIGH IMPACT POLY (URETHANE UREA) POLYSULFIDES

The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57,an Abbe number of at least 32 and a density of less than 1.3 grams/cm^3, when at least partially cured. © KIPO & WIPO 2008 ...

POLYURETHANES, POLYURETHANE(UREAS) SULFUR-CONTAINING POLYURETHANES AND SULFUR-CONTAINING POLYURETHANE(UREAS) AND METHODS OF PREPARATION

The present invention relates to polyurethanes, polyurethane(urea) sulfur-containing polyurethanes, sulfur-containing polyurethane(urea) and methods for their preparation. Polyurethanes of the present invention can be prepared by combining polyisocyanate; trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole; and diol having molecular weight of less than or equal to 200 grams/mole. Polyurethane(urea) of the present invention can be prepared by combining polyisocyanate; trifunctional or higher-functional polyol diol and diamine. Sulfur-containing polyurethanes of the present invention can be prepared by combining polyisocyanate and/or polyisothiocyanate; trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, and/or trifunctional or higher-functional polythiol having molecular weight of less than or equal to 600 grams/mole; and diol having molecular weight of less than or equal to 200 grams ...

광학 재료용 에피술피드 화합물의 제조 방법, 에피술피드 함유 조성물, 및 해당 조성물을 포함하는 광학 재료용 중합성 조성물

... 본 발명의 광학 재료용 에피술피드 화합물의 제조 방법은, 글리세린을 염소화하여, 디클로로프로판올을 얻는 공정과, 상기 디클로로프로판올을 에폭시화하여, 에피클로로히드린을 얻는 공정과, 상기 에피클로로히드린을 황화제와 반응시켜, 티올 화합물을 거쳐 비스(클로로히드린)(디)술피드 화합물을 얻는 공정과, 상기 비스(클로로히드린)(디)술피드 화합물을 염기 조건하에서 에폭시화하여, 에폭시 화합물을 얻는 공정과, 상기 에폭시 화합물을 황화제와 반응시켜, 하기 화학식 (1)로 표시되는 에피술피드 화합물을 얻는 공정을 포함한다. (식 중, n은 0 또는 1을 나타냄) ...

URETHANE-BASED OPTICAL COMPONENT AND MANUFACTURING PROCESS THEREFOR

A method of preparing thioepoxy based optical material

광학 재료용 중합성 조성물, 광학 재료 및 광학 재료의 제조 방법

... 본 발명의 광학 재료용 중합성 조성물은, 분자 내에, 탄소-탄소 이중 결합과, 이소시아나토기 및 이소티오시아나토기로부터 선택되는 1 이상의 기를 갖는 화합물 (A)와, 폴리티올 화합물 (B)를 포함하는 광학 재료용 중합성 조성물.

Polymers for use as antiflocculants - in paint dispersions

Formula of the polymers is : (where R1, R2, R4 are H, 1-4C alkyl, -CH2 CH2 NH2 or CH2CH2OH; R3 and X are H or 1-4C alkyl; Zb is an organic linking gp.; Y is H, 1-4C alkyl, 2-6C alkeny, -CN, halogen, phenyl, -OR, -OCOR, -COOR or -CO-R where R is 1-18C alkyl; D is a terminal gp., a is 1-200 (pref. 3-100); b is 0 or 1 and c is 5-5000 (pref. 20-500); c/a >1. The polymers are obtained by reaction of a polyethylene-imine with an addition (co)polymerisation product of olefinically unsat. monomers.

Composition for optical material and method for producing same, and optical material produced from composition for optical material

According to the present invention, a composition for an optical material can be provided, which is characterized by containing an episulfide compound having a value of turbidity in acetone of 3.0 ppm or less. According to a preferred embodiment of the present invention, a composition for an optical material can be provided, which comprises: (a) a compound (an episulfide compound) which has a structure represented by formula (1) and has a value of turbidity in acetone of 3.0 ppm or less; (b) a polyisocyanate compound; and (c) a polythiol compound. (In the formula, m represents an integer of 0 to 4; and n represents an integer of 0 or 1.) ...

Optical material using thiourethane

Provided is a method for forming a resin with a high refractive index, which has excellent physical properties such as the transparency, color tone, thermal resistance and shock resistance. The invention provides a composition including a polythiol compound having a skeleton of dithioacetal, dithioketal, ortho-trithioformate ester or ortho-tetrathiocarbonate ester, and having two or more mercapto groups, and a compound having two or more iso(thio)cyanato group, wherein a mole ratio of the mercapto group to the iso(thio)cyanato group is larger than 1.0 and lower than 3.0. The composition is a polymer composition used in a resin with a high refractive index. The invention also discloses a method for forming the resin by hardening the composition, and the resin thus formed, and an optical element formed by the resin and a lens formed by the optical element.

THIOEPOXY-BASED COPOLYMER COMPOSITION AND METHOD FOR PREPARING THIOEPOXY-BASED OPTICAL MATERIAL

The present invention relates to a copolymer composition comprising a thioepoxy compound, a polyisocyanate compound and a polythiol compound and to a thioepoxy-based optical material for polymerizing the composition. More particularly, the present invention relates to a method for preparing a high quality optical material which may not cause a striae or turbidity and which is colorless and transparent and which may not cause a deformation. The present invention provides a thioepoxy-based copolymer composition comprising a thioepoxy compound, a polyisocyanate compound and a polythiol compound, the water content of the thioepoxy compound being 10 to 700ppm, the water content of the composition being 10 to 800 ppm. The present invention also provides a method for preparing a thioepoxy-based optical material for polymerizing the composition.

METHOD FOR MANUFACTURING THIOURETHANE-BASED OPTICAL MATERIAL

The present invention relates to a method for manufacturing a thiourethane-based optical material, and specifically to a method for manufacturing a high-quality optical material having high yield without developing striae, white turbidity, and fine bubbles, and is colorless, transparent, and changeless. Provided is a method for manufacturing the thiourethane-based optical material in which a polymerization composition, comprising a polythiol compound and a polyisocyanate compound, is in-mold polymerized, and is characterized in that polymerization composition is processed under a specific vacuum condition before being injected into a mold for in-mold polymerization. The thiourethane-based optical material manufactured according to the present invention can replace existing optical materials and be widely used in a variety of industries.

POLYMERIZABLE COMPOSITION FOR POLYTHIOURETHANE OPTICAL MATERIAL

A polymerizable composition for polythiourethane optical material comprising any of compounds of the general formula (1): M(L)n (1) (wherein M is Al, Fe, Cu, Zn, Zr or Bi; L is a dithiocarbamic acid group, a sulfonic acid group, a mono- or dialkyl phosphoric ester group, a substituted acetylacetonato group or a halogen; and n is an integer of 1 to 5); one or two or more isocyanates selected from the group consisting of isocyanate compounds and isothiocyanate compounds; and one or two or more active hydrogen compounds each having a mercapto group. The compounds of the general formula (1) exhibit a catalytic activity equal to or superior to that had by organotin catalysts having been employed as catalysts for the production of polythiourethane optical materials, and have high safety. Further, the thus obtained polythiourethane resins satisfactorily meet the property requirements for optical materials, in particular, excelling in weather resistance. Therefore, the proposed catalysts are available ...

POLYURETHANES, POLYURETHANE(UREAS) SULFUR-CONTAINING POLYURETHANES AND SULFUR-CONTAINING POLYURETHANE(UREAS) AND METHODS OF PREPARATION

The present invention relates to polyurethanes, polyurethane(urea) sulfur-containing polyurethanes, sulfur-containing polyurethane(urea) and methods for their preparation. Polyurethanes of the present invention can be prepared by combining polyisocyanate; trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole; and diol having molecular weight of less than or equal to 200 grams/mole. Polyurethane(urea) of the present invention can be prepared by combining polyisocyanate; trifunctional or higher-functional polyol diol and diamine. Sulfur-containing polyurethanes of the present invention can be prepared by combining polyisocyanate and/or polyisothiocyanate; trifunctional or higher-functional polyol having molecular weight of less than or equal to 200 grams/mole, and/or trifunctional or higher-functional polythiol having molecular weight of less than or equal to 600 grams/mole; and diol having molecular weight of less than or equal to 200 grams ...

THERMOPLASTIC COPOLYMER FOR OPTICAL USE AND PROCESS FOR PREPARING THE SAME

A process for preparing a thermoplastic thiourethane-urethane copolymer for optical use, which is a polymeric material which has a good balance between refractive index and Abbe number and possesses various properties required of optical products such as lenses. This process comprises the first step of reacting a diisocyanate and/or a diisothiocyanate with a thiol compound having two groups reactive with an isocyanate group, at least one of the reactive groups being an SH group, to prepare a thiourethane prepolymer having a weight-average molecular weight of 1,000 to 30,000; and the second step of reacting the thiourethane prepolymer prepared in the first step with a diisocyanate and a hydroxyl-containing monomer having two groups reactive with an isocyanate group, at least one of the reactive groups being an OH group.

COMPOSITIONS COMPRISING AN ISOCYANATE-FUNCTIONAL COMPOUND, AND ISOCYANATE-REACTIVE COMPOUND, AND A CO-CATALYST

The invention pertains to a new composition comprising at least one isocyanate-functional compound comprising at least two isocyanate groups, at least one isocyanate-reactive compound comprising at least two isocyanate-reactive groups selected from mercapto groups, hydroxyl groups, and mixtures thereof, and a co-catalyst comprising a phosphine and a Michael acceptor. The invention further relates to a coating composition comprising the above composition, a method of coating a substrate comprising coating the substrate with the above composition, a substrate coated with that composition, the use of the above composition in the (re)finishing of large vehicles and refinishing of cars, and an adhesive comprising the above composition.

Resin for plastic lens having high-refractive index, lens comprising the resin, and method for preparation of the lens

The present invention relates to resin useful in preparing plastic lenses having a high refractive index comprising reacting an aliphatic polyisocyanate compounds having at least one sulfur atom with one or more of active hydrogen compounds selected from the group consisting of a polyol, a polythiol having sulfur atoms only in a mercapto groups, and a polythiol having at least one sulfur atom other than in the mercapto groups; lenses containing the above-mentioned resin; and a method for the preparation thereof characterized by adding an internal release agent to the mixture of the above-mentioned raw materials in casting lenses from the resin; and lenses obtained by this method.

Process for producing polyurethane lens

A polyurethane lens is produced by (a) adding to a monomer mixture comprising a polyisocyanate and a polythiol, a phosphoric acid ester represented by the general formula (I) см. иллюстрацию в PDF-документе (R1 and R2 which may be the same or different are each an alkyl group of 1-8 carbon atoms) and then (b) subjecting the monomer mixture containing the phosphoric acid ester, obtained in the step (a) to cast polymerization in a mold for plastic lens production. Said polyurethane lens has good releasability from mold, is free from color unevenness after tinting and cloudiness, and possesses high refractive index (ND) and high optical dispersion.

Iso(thio)cyanate composition, and resin composition including same for optical member

An iso(thio)cyanate composition for an optical component has excellent storage stability. The iso(thio)cyanate composition includes an iso(thio)cyanate compound having two or more iso(thio)cyanate groups in a molecule, a phosphoric acid ester compound represented by general formula (1), and a phosphoric acid ester compound represented by general formula (2). A total amount of the phosphoric acid ester compounds is 1 ppm or greater and less than 25,000 ppm, based on the mass of the iso(thio)cyanate compound. A molar ratio of the phosphoric acid ester compound represented by general formula (1) and the phosphoric acid ester compound represented by general formula (2) is 30/70 to 70/30.

Film and uses thereof

Disclosed is a film composed of a resin having a thiourethane bond, wherein the molar ratio (S/N) of sulfur to nitrogen contained in the resin is equal to or more than 0.8 and less than 3. According to the present invention, the film is excellent in a balance among high refractive index, low birefringence and light transmittance, and further excellent in a balance of mechanical characteristics such as toughness, hardness and dimensional stability, so that effects of deformation and the like during processing are very small, and the film is further excellent in solvent resistance as well.

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIALS, OPTICAL MATERIAL AND PLASTIC LENS OBTAINED FROM COMPOSITION

A polymerizable composition for optical materials of the present invention includes a polyisocyanate compound (A), a polyol compound (B) represented by the following General Formula (1) having a number average molecular weight of 100 or more, a di- or higher functional active hydrogen compound (C) (here, the compound (B) is excluded), and a photochromic compound (D). 2. The polymerizable composition for optical materials according to claim 1 ,wherein the polyisocyanate compound (A) is at least one kind selected from the group consisting of hexamethylene diisocyanate, pentamethylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, bis(isocyanatomethyl) cyclohexane, dicyclohexylmethane diisocyanate, 2,5-bis(isocyanatomethyl)bicyclo[2.2.1]-heptane, 2,6-bis(isocyanatomethyl)bicyclo-[2.2.1]-heptane, tolylene diisocyanate, phenylene diisocyanate, and diphenylmethane diisocyanate.4. The polymerizable composition for optical materials according to claim 3 ,wherein the polyol compound (B) is the compound represented by General Formula (I), (III), or (IV).5. The polymerizable composition for optical materials according to claim 3 ,wherein the compound represented by General Formula (I) is polyethylene glycol or polypropylene glycol.6. The polymerizable composition for optical materials according to claim 3 ,wherein the number average molecular weight of the compound represented by General Formula (I) is 200 to 4000.7. The polymerizable composition for optical materials according to claim 3 ,wherein the number average molecular weight of the compound represented by General Formula (I) is 300 to 3000.8. The polymerizable composition for optical materials according to claim 3 ,13. The polymerizable composition for optical materials according to claim 1 ,wherein the active hydrogen compound (C) is at least one kind selected from the group consisting of glycerin, pentaerythritol tetrakis(2-mercaptoacetate), pentaerythritol tetrakis(3-mercaptopropionate), 4- ...

Coating Composition Comprising a Polyisocyanate and a Polyol

The invention relates to a non-aqueous coating composition comprising 1. A non-aqueous coating composition comprisinga) a polyisocyanate,b) a polyol having an average functionality of more than 3 hydroxyl groups per molecule, and i) a metal based curing catalyst for the addition reaction of isocyanate groups and hydroxyl groups and', 'ii) a mercapto carboxylic acid,, 'c) the reaction product of'}wherein the coating composition does not contain a carboxylic acid wherein the carbonyl group of the carboxylic acid is in conjugation with a TT-electron system.2. The coating composition according to claim 1 , wherein the catalyst for the addition reaction of isocyanate groups and hydroxyl groups is based on a metal selected from the group consisting of tin claim 1 , bismuth claim 1 , zirconium claim 1 , and mixtures thereof.3. The coating composition according to claim 1 , wherein the catalyst for the addition reaction of isocyanate groups and hydroxyl groups is based on tin.4. The coating composition according to claim 1 , wherein the amount of metal based curing catalyst is in the range of 0.001 to 10 weight-% claim 1 , calculated on the non-volatile matter of the composition.5. The coating composition according to claim 1 , wherein the mercapto carboxylic acid is selected from the group consisting of 2-mercapto-carboxylic acids claim 1 , 3-mercapto-carboxylic acids claim 1 , and mixtures thereof.6. The coating composition according to claim 1 , wherein the amount of mercapto carboxylic acid is in the range of 0.1 to 18 weight-% claim 1 , calculated on the non-volatile matter of the composition.7. The coating composition according to claim 1 , wherein component b) comprises a polyester polyol and a polyacrylate polyol.8. The coating composition according to claim 1 , wherein the composition further comprises a volatile organic solvent.9. The coating composition according to claim 7 , wherein the amount of volatile organic solvent does not exceed 420 g/l of coating ...

Using occluding fluids to augment additive manufacturing processes

The present disclosure relates to the use of occluding fluids, such as a high-density fluid (a “z-fluid”) or a low-density fluid (an “a-fluid”), to displace resin within a vat during 3D printing. Further, an a-fluid may act as a protective boundary for a 3D printing resin wherein the a-fluid sits on top of the printing resin. Another embodiment of the disclosure provides a process of assessing which regions of a computer-aided design (CAD) model take advantage of a buoying force supplied by the occluding fluid, such that fewer support structures are needed for printing a final CAD model compared to printing the CAD model without the occluding fluid.

Polyurethane Adhesive

The present invention relates to acrylic compositions capable of bonding directly with an isocyanate-containing composition, e.g. polyurethane, and methods for manufacturing the same. The acrylic compositions of the invention have multifunctional chain transfer agents and/or multifunctional crosslinkers with isocyanate-reactive groups.

OPTICAL RESIN COMPOSITION, OPTICAL ELEMENT OBTAINED BY CURING OPTICAL RESIN COMPOSITION, AND PLASTIC LENS FOR EYEGLASSES

An optical resin composition from which an optical element having high heat resistance can be obtained, an optical element obtained by curing the optical resin composition, and a plastic lens for eyeglasses, where the optical resin composition contains a polyiso(thio)cyanate and a polythiol component, which contains a polythiol compound having a sulfide bond and/or a disulfide bond. 2. The optical resin composition according to claim 1 , wherein the polythiol component contains a compound having a refractive index of 1.62 or more.3. The optical resin composition according to claim 1 , wherein the polythiol compound has two or more sulfide bonds and/or disulfide bonds in total.4. The optical resin composition according to claim 1 , wherein the polythiol component contains a compound having three or more mercapto groups.5. The optical resin composition according to claim 1 , wherein the polythiol component contains at least one kind selected from the group consisting of 2 claim 1 ,3-bis(2-mercaptoethylthio) propane-1-thiol claim 1 , 5 claim 1 ,7-bis(mercaptomethyl)-3 claim 1 ,6 claim 1 ,9-trithiaundecane-1 claim 1 ,11-dithiol claim 1 , 4 claim 1 ,7-bis(mercaptomethyl)-3 claim 1 ,6 claim 1 ,9-trithiaundecane-1 claim 1 ,11-dithiol claim 1 , and 4 claim 1 ,8-bis(mercaptomethyl)-3 claim 1 ,6 claim 1 ,9-trithiaundecane-1 claim 1 ,11-dithiol.6. The optical resin composition according to claim 1 , further comprising at least one kind selected from the group consisting of a compound having three or more isocyanate groups claim 1 , a compound having three or more active hydrogen atoms claim 1 , and a compound having two or more episulfide groups.7. The optical resin composition according to claim 4 , wherein the polythiol component contains a compound having two mercapto groups.8. The optical resin composition according to claim 1 , wherein the amount of the compound represented by the formula (I-p) or formula (II-p) is 50% by mass or more in the polyiso(thio)cyanate component ...

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND OPTICAL MATERIAL

A polymerizable composition for an optical material of the present invention includes polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2), an episulfide (b), and a polythiol (c). 1. A polymerizable composition for an optical material including:polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2);an episulfide (b); anda polythiol (c).2. The polymerizable composition for an optical material according to claim 1 ,wherein the modified aliphatic polyisocyanate (a2) is an isocyanurate of the aliphatic polyisocyanate.3. The polymerizable composition for an optical material according to claim 1 ,wherein the aliphatic polyisocyanate (a1) and/or the aliphatic polyisocyanate in the modified aliphatic polyisocyanate (a2) are obtained from plant-derived materials.5. The polymerizable composition for an optical material according to claim 1 ,wherein the episulfide (b) includes an episulfide obtained from plant-derived materials.6. The polymerizable composition for an optical material according to claim 1 ,wherein the aliphatic polyisocyanate (a1) and/or the aliphatic polyisocyanate in the modified aliphatic polyisocyanate (a2) is at least one selected from 1,5-pentamethylene diisocyanate, 1,6-hexamethylene diisocyanate, 1,7-heptamethylene diisocyanate, lysine diisocyanate, lysine triisocyanate, dimer acid diisocyanate, octamethylene diisocyanate, and decamethylene diisocyanate.7. The polymerizable composition for an optical material according to claim 1 ,wherein the polythiol (c) is at least one selected from 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8 or 4,7 or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, pentaerythritol tetrakis mercaptoacetate, pentaerythritol tetrakis mercaptopropionate, 2,5-bis(mercaptomethyl)-1,4-dithiane, bis(mercaptoethyl)sulfide, 1,1,3,3-tetrakis(mercaptomethylthio)propane, 4,6-bis(mercaptomethylthio)-1,3-dithiane, 2-(2,2-bis( ...

PROCESS FOR PRODUCING EPISULFIDE COMPOUND FOR OPTICAL MATERIAL, EPISULFIDE-CONTAINING COMPOSITION, AND POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL INCLUDING THE SAME COMPOSITION

A process for producing an episulfide compound for an optical material of the present invention includes a step of chlorinating glycerin to obtain dichloropropanol; a step of epoxidizing the dichloropropanol to obtain epichlorohydrin; a step of reacting the epichlorohydrin with a sulfating agent to obtain a bis(chlorohydrin) (di)sulfide compound thought a thiol compound; a step of epoxidizing the bis(chlorohydrin) (di)sulfide compound under basic conditions to obtain an epoxy compound; and a step of reacting the epoxy compound with a sulfating agent to obtain an episulfide compound represented by following General Formula (1): 2. The process for producing an episulfide compound for an optical material according to claim 1 ,wherein the glycerin is obtained from plant-derived materials.5. A polymerizable composition for an optical material comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, 'the episulfide-containing composition according to .'}6. The polymerizable composition for an optical material according to claim 5 , further comprising:a polyisocyanate (a).7. The polymerizable composition for an optical material according to claim 6 ,wherein the polyisocyanate (a) is at least one selected from hexamethylene diisocyanate, isophorone diisocyanate, bis(isocyanatomethyl)cyclohexane, dicyclohexylmethane diisocyanate, 2,5-bis(isocyanatomethyl)bicyclo-[2.2.1]-heptane, 2,6-bis(isocyanatomethyl)bicyclo-[2.2.1]-heptane, m-xylylene diisocyanate, and 2,5-bis(isocyanatomethyl)-1,4-dithiane.8. The polymerizable composition for an optical material according to claim 5 , further comprising:a polythiol (b).9. The polymerizable composition for an optical material according to claim 8 ,wherein the polythiol (b) is at least one selected from 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8 or 4,7 or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, pentaerythritol tetrakis mercaptoacetate, pentaerythritol tetrakis mercaptopropionate, 2,5-bis(mercaptomethyl)- ...

METHOD FOR PRODUCING POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, AND USES THEREOF

Provided is a method for producing a molded product comprising preparing a polymerizable composition for optical materials and curing the polymerizable composition for optical materials to produce the molded product. The preparation of the polymerizable composition comprises preparing a polythiol compound containing, as a main component, one kind or two or more kinds selected from a defined group of compounds, and preparing the polymerizable composition from the polythiol compound. The preparation of the polythiol compound comprises reacting 2-mercaptoethanol with a defined epihalohydrin compound to obtain a defined compound, reacting the defined compound with sodium sulfide to obtain a defined polyalcohol compound, reacting the polyalcohol compound with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt, adding aqueous ammonia to a reaction solution containing the isothiuronium salt thereby hydrolyzing the isothiuronium salt to obtain the polythiol compound and purifying the polythiol compound with hydrochloric acid.

METHOD FOR PRODUCING POLYTHIOL COMPOUND FOR OPTICAL MATERIALS AND COMPOSITION COMPRISING SAME FOR OPTICAL MATERIALS

The present invention relates to a polythiol compound for a high quality optical material that exhibits excellent physical properties in terms of color, a composition for an optical material including the polythiol compound, a method for producing an optical material, and a method for preparing the polythiol compound. The method includes reacting an epichlorohydrin compound containing 0.5% by weight or less of impurities with 2-mercaptoethanol. The polythiol compound is prevented from being colored. The polythiol compound can be used to produce a urethane optical material that is prevented from being colored and has a low yellowness index and a good color. The polythiol compound can be used to produce various optical materials including urethane optical materials. The optical material can be used to manufacture an optical lens having a good color. The optical lens can be used as a spectacle lens, a polarizing lens, a camera lens, or the like. 1. A method for preparing a polythiol compound , comprising reacting an epichlorohydrin compound with 2-mercaptoethanol ,wherein the epichlorohydrin compound contains 0.5% by weight or less of impurities comprising acrolein, allyl chloride, 1,2-dichloropropane, 2,3-dichloropropene, 2-methyl-2-pentanol, 2-chloroallyl alcohol, cis-1,3-dichloropropene, trans-1,3-dichloropropene, 1,3-dichloroisopropanol, 1,2,3-trichloropropane and 2,3-dichloropropanol.2. A composition for an optical material comprising a polythiol compound prepared by the method according to .3. The composition according to claim 2 , further comprising a polyisocyanate compound.4. The composition according to claim 3 , wherein the polyisocyanate compound is selected from the group consisting of isophorone diisocyanate (IPDI) claim 3 , hexamethylene diisocyanate (HDI) claim 3 , dicyclohexyl methanediisocyanate (H12MDI) claim 3 , xylylene diisocyanate (XDI) claim 3 , 3 claim 3 ,8-bis(isocyanatomethyl)tricyclo[5 claim 3 ,2 claim 3 ,1 claim 3 ,02 claim 3 ,6]decane ...

METHOD FOR PRODUCING ORGANIC MERCAPTO COMPOUND OR INTERMEDIATE THEREOF, (POLY)THIOL COMPONENT, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, MOLDED PRODUCT, OPTICAL MATERIAL, AND LENS

A method for producing an organic mercapto compound or an intermediate thereof according to the present invention has a reaction step of reacting an alcohol compound including a sulfur atom with a thioamide compound having a structure in which an organic group is bonded to at least one bonding hand of a thioamide group, under acidic conditions. 1. A method for producing an organic mercapto compound or an intermediate thereof , comprising:a reaction step of reacting an alcohol compound including a sulfur atom with a thioamide compound having a structure in which an organic group is bonded to at least one bonding hand of a thioamide group, under acidic conditions.2. The method for producing an organic mercapto compound or an intermediate thereof according to claim 1 ,{'sup': '2', 'wherein a topological polar surface area of the thioamide compound is 10.00 to 51.00 Å.'}4. The method for producing an organic mercapto compound or an intermediate thereof according to claim 3 ,{'sup': '1', 'wherein, in the compound represented by General Formula (2), Ris a monovalent aryl group having 6 to 10 carbon atoms, which optionally be substituted, a monovalent aliphatic group having 1 to 10 carbon atoms, which optionally be substituted, or a monovalent heteroaryl group having 3 to 10 carbon atoms, which optionally be substituted, and substituents of these groups optionally include a hetero atom, and'}{'sup': 2', '3', '2', '3, 'Rand Rare hydrogen atoms or Rand Rare bonded to each other to form a nitrogen-containing heterocyclic ring having 3 to 10 carbon atoms.'}5. The method for producing an organic mercapto compound or an intermediate thereof according to claim 1 , {'br': None, 'sup': '1', 'sub': 'n', 'Q\ue8a0OH\u2003\u2003(1)'}, 'wherein the alcohol compound is represented by General Formula (1),'}{'sup': '1', 'wherein in Formula (1), Qis an n-valent organic group including a sulfur atom and having 1 to 30 carbon atoms, and n is an integer of 1 to 10.'}7. The method for producing ...

Polymerizable composition for optical materials and application of same

The polymerizable composition for optical materials of the present invention includes a polyester polyol (a), a compound (b) of which light absorption characteristics vary by sensing changes in environment; and a polymerization reactive compound (c).

COMPOSITIONS, METHOD OF BONDING, AND BONDED ASSEMBLY

A two-part curable composition comprises a Part A and a Part B. Part A composition includes uretdione-containing compound having an average uretdione ring functionality of at least 1.2. Part B composition includes polythiol having an average sulfhydryl group functionality of at least 2. At least one of the Part A composition and the Part B composition may further comprise accelerator for addition of the polythiol to the uretdione-containing compound. The accelerator comprises a nonacidic amine curative. The amine curative does not comprise a substituted or unsubstituted amidine group. Cured compositions, methods of making them and articles including them are also disclosed. A two-part composition without accelerator is disclosed wherein the uretdione-containing compound has at least one pendant —CHNRgroups, wherein each Rindependently represents an alkyl group having from 1 to 8 carbon atoms, or two Rgroups taken together form an alkylene group having from 2 to 8 carbon atoms. 122-. (canceled)23. A two-part curable composition comprising:a Part A composition comprising at least one uretdione-containing compound, the at least one uretdione-containing compound having an average uretdione ring functionality of at least 1.2, and wherein the at least one uretdione-containing compound has an average isocyanate functionality of less than 0.01;a Part B composition comprising at least one thiol-containing compound, the at least one thiol-containing compound having an average sulfhydryl group functionality of at least 2; and{'sup': 1', '2', '3, 'claim-text': [{'sup': '1', 'Rrepresents H or a monovalent organic group having from 1 to 18 carbon atoms;'}, {'sup': '2', 'Rrepresents H or a monovalent organic group having from 1 to 18 carbon atoms;'}, {'sup': '3', 'Rrepresents a monovalent organic group having from 2 to 18 carbon atoms; or'}, {'sup': 2', '3, 'Rand Rtaken together represent a divalent organic group having from 2 to 18 carbon atoms, or'}, {'sup': 1', '2', '3, 'R, R, ...

METHOD FOR PRODUCING POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, AND USES THEREOF

Provided is a method for producing a molded product comprising a step for preparing a polymerizable composition for optical materials and a step for curing the polymerizable composition for optical materials to produce the molded product. The step for preparing the polymerizable composition for optical materials comprises a step for preparing a defined polythiol compound and a step for preparing the polymerizable composition for optical materials from the polythiol compound. The step for preparing the defined polythiol compound comprises reacting 2-mercaptoethanol with a defined epihalohydrin compound at a temperature of 10° C. to 50° C. to obtain a defined polyalcohol compound, reacting the polyalcohol compound with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt, hydrolyzing the isothiuronium salt to obtain the polythiol compound, adding hydrochloric acid at a defined concentration to a solution of the polythiol compound, and washing the solution to purify the polythiol compound. 3. The method for producing a molded product according to claim 1 ,wherein the polymerizable composition for optical materials further comprises a polyiso(thio)cyanate compound.4. The method for producing a molded product according to claim 2 ,wherein the polymerizable composition for optical materials further comprises a polyiso(thio)cyanate compound. The present invention relates to a method for producing a polythiol compound, a polymerizable composition for optical materials, and uses thereof.Plastic lenses are lightweight, not easily breakable and tintable as compared with inorganic lenses. Therefore, in recent years, plastic lenses have rapidly been in wide use in optical devices such as spectacle lenses and camera lenses.It has become necessary for resins for plastic lenses to have more enhanced performances, and there have been demands for an increase in the refractive index, an increase in the Abbe number, a decrease in specific gravity, an increase ...

COMPOSITIONS, METHOD OF BONDING, AND ASSEMBLY

A two-part curable composition comprises a Part A and a Part B. The Part A composition includes polyuretdione having an average uretdione ring functionality of at least 1.2. Part B composition includes polythiol having an average sulfhydryl group functionality of at least 1.2. At least one of the Part A composition and the Part B composition may further comprise accelerator for addition of the polythiol to the polyuretdione. The accelerator comprises a basic salt having the formula M+Zb−x y wherein M+ is a cation having a single positive charge a, wherein a is 1, 2, or 3; Zb− is an oxide anion having a negative charge b−, wherein b is 1 or 2; and x and y are positive integers, wherein x equals y times b. Cured compositions, methods of making them and articles including them are also disclosed. 126-. (canceled)27. A two-part curable composition comprising:a Part A composition comprising at least one polyuretdione, the at least one polyuretdione having an average uretdione ring functionality of at least 1.2, wherein the at least one polyuretdione has an average isocyanate functionality of less than 0.01;a Part B composition comprising at least one polythiol, the at least one polythiol having an average sulfhydryl group functionality of at least 1.2; and [{'br': None, 'sup': +', 'b−, 'sub': x', 'y, 'MZ'}, [{'sup': '+', 'M is a cation having a single positive charge;'}, {'sup': b−', '−, 'Z is an oxide anion having a negative charge b, wherein b is 1 or 2; and'}, 'x and y are positive integers, wherein x equals y times b., 'wherein'}], 'wherein at least one of the Part A composition and the Part B composition further comprises at least one accelerator for ring-opening addition of the at least one polythiol to the at least one polyuretdione, and wherein the at least one accelerator comprises a basic salt having the formula'}28. The two-part curable composition of claim 27 , wherein M is selected from lithium claim 27 , sodium claim 27 , potassium claim 27 , cesium claim ...

Polymerizable composition for optical materials, optical material, and method of manufacturing optical material

The polymerizable composition for optical materials of the present invention includes: (A) a compound having a carbon-carbon double bond and at least one group selected from an isocyanate group and an isothiocyanate group in a molecule; and (B) a polythiol compound.

PROCESS FOR PRODUCING A PHOTOCHROMIC CURED BODY

A process for producing a photochromic cured body by curing a photochromic composition comprising (A) a polyiso(thio)cyanate compound having at least two isocyanate groups and/or isothiocyanate groups in one molecule, a poly(thi)ol compound having at least two hydroxyl groups and/or thiol groups in one molecule, (C) a mono(thi)ol compound having one hydroxy group or thiol group in one molecule, and a photochromic compound. 1. A process for producing a photochromic cured body by curing a photochromic composition comprising (A) a polyiso(thio)cyanate compound having at least two isocyanate groups and/or isothiocyanate groups in one molecule , (B) a poly(thi)ol compound having at least two hydroxyl groups and/or thiol groups in one molecule , (C) a mono(thi)ol compound having one hydroxy group or thiol group in one molecule , and (D) a photochromic compound.2. The process for producing a photochromic cured body according to claim 1 , wherein the photochromic composition comprises a mixture of a premixture of the component (A) and the component (D) and a premixture of the component (B) and the component (C) claim 1 , or a mixture of a premixture of the component (B) claim 1 , the component (C) and the component (D) claim 1 , and the component (A).3. The process for producing a photochromic cured body according to claim 1 , wherein the photochromic composition comprises 2 to 40 parts by mass of the component (C) based on 100 parts by mass of the total of the components (A) claim 1 , (B) and (C).4. The process for producing a photochromic cured body according to claim 1 , wherein the photochromic composition further comprises (E) a polyrotaxane having a composite molecular structure composed of an axial molecule and a plurality of cyclic molecules clathrating the axial molecule.5. The process for producing a photochromic cured body according to claim 4 , wherein the cyclic molecules of the polyrotaxane are cyclodextrin rings.6. The process for producing a photochromic ...

SHEET-FORMING BODY, ADHESIVE SHEET, AND LAMINATE

The present invention provides a sheet-forming body containing a thiourethane bond-having compound and a thiol group-having compound, wherein, in an IR absorption spectrum thereof, the ratio of the peak intensity A of the absorption peak based on the carbonyl group in the thiourethane bond to the peak intensity B of the absorption peak based on the thiol group (A/B) is 20 or more and 250 or less. Using the sheet-forming body, rubber members, especially vulcanized rubber members can be strongly bonded, and the sheet-forming body and an adhesive sheet, which are excellent in handleability and workability, and a laminate produced by bonding rubber layers using the sheet-forming body are provided. 1. A sheet-forming body comprising a thiourethane bond-having compound and a thiol group-having compound , wherein:in an IR absorption spectrum thereof, the ratio of the peak intensity A of the absorption peak based on the carbonyl group in the thiourethane bond to the peak intensity B of the absorption peak based on the thiol group (A/B) is 20 or more and 250 or less.2. The sheet-forming body according to claim 1 , wherein at least a polythiol compound (A) and an isocyanate group-containing compound (B) are blended.3. The sheet-forming body according to claim 2 , wherein a radical generator (C) is further blended.4. The sheet-forming body according to claim 3 , wherein the radical generator (C) is a thermal radical generator containing a peroxide.5. The sheet-forming body according to claim 3 , wherein the content of the peroxide claim 3 , as measured through liquid chromatography mass spectrometry claim 3 , is 2% by mass or more.6. The sheet-forming body according to claim 2 , wherein the ratio of the total molar number of the isocyanate group contained in the isocyanate group-containing compound (B) to the total molar number of the thiol group contained in the polythiol compound (A) (isocyanate group/thiol group) is 0.2 or more and 0.78 or less.7. The sheet-forming body ...

ISO(THIO)CYANATE COMPOSITION, AND RESIN COMPOSITION INCLUDING SAME FOR OPTICAL MEMBER

An iso(thio)cyanate composition has excellent storage stability. The iso(thio)cyanate composition for an optical component includes an iso(thio)cyanate compound having two or more iso(thio)cyanate groups in a molecule, a phosphoric acid ester compound represented by general formula (1), and a phosphoric acid ester compound represented by general formula (2), a total amount of the phosphoric acid ester compounds being 1 ppm to 25,000 ppm, based on the mass of the iso(thio)cyanate compound. 2. The iso(thio)cyanate composition according to claim 1 , wherein a molar ratio of the phosphoric acid ester compound represented by general formula (1) and the phosphoric acid ester compound represented by general formula (2) is 30/70 to 70/30.4. The iso(thio)cyanate composition according to claim 1 , wherein the iso(thio)cyanate compound has an aromatic ring.5. The iso(thio)cyanate composition according to claim 4 , wherein the iso(thio)cyanate compound is at least one selected from the group consisting of phenylene diisocyanate claim 4 , methylphenylene diisocyanate claim 4 , bis(isocyanatomethyl)benzene claim 4 , mesitylene triisocyanate claim 4 , bis(isocyanatopropyl)benzene claim 4 , diphenylmethane diisocyanate claim 4 , diisocyanate naphthalene claim 4 , and (dimethylbiphenylylene) diisocyanate.6. The iso(thio)cyanate composition according to claim 1 , wherein the iso(thio)cyanate compound is at least one selected from the group consisting of bis(isocyanatomethyl)benzene claim 1 , bis(isocyanatomethyl)cyclohexane claim 1 , bis(4-isocyanatocyclohexyl)methane claim 1 , isophorone diisocyanate claim 1 , norbornanediylbis(methylene) diisocyanate claim 1 , and bis(isocyanatomethyl) dithiane.7. A resin composition for an optical component claim 1 , which is obtained by using the iso(thio)cyanate composition according to .8. The resin composition for an optical component according to claim 7 , which is obtained by further using an active hydrogen compound having two or more ...

Polymerizable composition for optical material, optical material and method for producing optical material

Disclosed is a polymerizable composition for o an optical material containing tolylene diisocyanate, hexamethylene diisocyanate, and one or more polythiol compounds selected from the group consisting of 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8-, 4,7- or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, pentaerythritol tetrakismercaptoacetate, pentaerythritol tetrakismercaptopropionate, 2,5-bis(mercaptomethyl)-1,4-dithiane, bis(mercaptoethyl)sulfide, 1,1,3,3-tetrakis(mercaptomethylthio)propane, 4,6-bis(mercaptomethylthio)-1,3-dithiane and 2-(2,2-bis(mercaptomethylthio)ethyl)-1,3-dithietane.

POLYTHIOURETHANE-BASED CASTING RESIN HAVING HIGH FRACTURE RESISTANCE AND LOW SPECIFIC WEIGHT

The invention has as subject matter a method for producing a polyurethane cast resin, wherein the production comprises the steps of mixing at least one thiol component with at least one isocyanate component, degassing of the mixture and hardening of the polyurethane polymer in a one-stage process. Cast resins for electronic or optoelectronic components of for the production of optical lenses are obtained by the method of the invention that have good mechanical properties and very good optical properties at the same time by a suitable combination of polythiols as hardening component with commercially available isocyanates. The addition of special isocyanates is also not very necessary, as is the case for carrying out the method in several stages. The method in accordance with the invention results in an economical, one-stage process in the properties of the cast resin that are necessary for the application range. 2. The method according to claim 1 , characterized in that one or more dithiols according to formula (I) are used as thiol component (A) claim 1 , preferably ethane-1 claim 1 ,2-dithiol (x=0) claim 1 , 2 claim 1 ,2 dimercaptodiethylsulfide (x=1) claim 1 , 1 claim 1 ,11 dimercapato-3 claim 1 ,6 claim 1 ,9-trithiaundecane (x=5).3. The method according to claim 1 , characterized in that one or more dithiols according to formula (I) in combination with one or more dithiols according to formula (I) in combination with one or more thiols of the group (I) consisting of pentaerythrithol-tetrakis-3-mercaptopropionate claim 1 , pentaerythrithol-tetrakis-thioglycolate claim 1 , trimethylolpropane-tris-3-mercaptopropionate claim 1 , trimethylolpropane-tris-thioglycolate claim 1 , pentaerythrithol-tetrakis-2-mercaptopropionate claim 1 , trimethylolpropane-tris-2-mercaptopropionate claim 1 , ditrimethylolpropane-tetrakis-3-mercaptopropionate claim 1 , ditrimethylolpropane-tetrakis-thioglycolate claim 1 , ditrimethylolpropane-tetrakis-2-mercaptopropionate claim 1 , ...

COMPOSITION FOR OPTICAL MATERIAL AND METHOD FOR PRODUCING SAME, AND OPTICAL MATERIAL PRODUCED FROM COMPOSITION FOR OPTICAL MATERIAL

According to the present invention, a composition for an optical material can be provided, which is characterized by containing an episulfide compound having a value of turbidity in acetone of 3.0 ppm or less. According to a preferred embodiment of the present invention, a composition for an optical material can be provided, which comprises: (a) a compound (an episulfide compound) which has a structure represented by formula (1) and has a value of turbidity in acetone of 3.0 ppm or less; (b) a polyisocyanate compound; and (c) a polythiol compound. 1. A composition for optical materials , which comprises an episulfide compound having a value of turbidity in acetone of 3.0 ppm or less.2. The composition for optical materials according to claim 1 , further comprising a sulfur.3. The composition for optical materials according to claim 2 , wherein the episulfide compound is preliminarily polymerized with the sulfur.4. The composition for optical materials according to claim 2 , wherein 10% or more of the sulfur is preliminarily polymerized with the episulfide compound.5. The composition for optical materials according to claim 2 , further comprising a polythiol compound.6. The composition for optical materials according to claim 1 , which is subjected to deaeration treatment.8. The composition for optical materials according to claim 7 , further comprising a polyisocyanate compound (b) and a polythiol compound (c).9. The composition for optical materials according to claim 8 , wherein the compound (b) is at least one compound selected from the group consisting of isophorone diisocyanate claim 8 , tolylene diisocyanate claim 8 , diphenylmethane diisocyanate claim 8 , hexamethylene diisocyanate claim 8 , m-xylylene diisocyanate claim 8 , p-xylylene diisocyanate claim 8 , m-tetramethyl xylylene diisocyanate claim 8 , p-tetramethyl xylylene diisocyanate claim 8 , 1 claim 8 ,3-bis(isocyanatemethyl)cyclohexane claim 8 , 1 claim 8 ,4-bis(isocyanatemethyl)cyclohexane claim 8 , ...

Batch Process for Preparing Molded Optical Articles

A batch process for preparing a molded optical article includes introducing (i) a dithiol component or (ii) a polyisocyanate component into a reaction vessel; adding a first catalyst of organotin halide to form a first reaction mixture; heating the first reaction mixture; introducing a second catalyst of tertiary amine to the first reaction mixture; mixing a polyisocyanate (ii) into the reaction vessel containing the first reaction mixture if dithiol (i) was first added, or mixing a dithiol (i) into the first reaction mixture if the polyisocyanate (ii) was first added, to form a second reaction mixture; filling a mold with the second reaction mixture to provide a filled mold to form a molded optical article. The molar ratio of elemental tin present in the first catalyst to tertiary amine compound present in the second catalyst ranges from 0.04:1 to 0.29:1.

PROCESS FOR PRODUCING OPTICAL MATERIAL

A process for producing an optical material of the present invention includes a step of mixing di- or higher-functional thiol compounds (A) having one or more sulfide bonds and/or one or more ester bonds with an imidazole-based curing catalyst (B) to prepare a mixed solution; a step of mixing the mixed solution with an isocyanate compound (C) including at least one kind of a di- or higher-functional alicyclic isocyanate compound (c1) and/or a di- or higher-functional aliphatic isocyanate compound (c2) to prepare a polymerizable composition for optical materials; a step of injecting the polymerizable composition for optical materials into a mold; and a step of polymerization-curing the polymerizable composition for optical materials in the mold. 1. A process for producing an optical material , comprising:a step of mixing di- or higher-functional thiol compounds (A) having one or more sulfide bonds and/or one or more ester bonds with an imidazole-based curing catalyst (B) to prepare a mixed solution;a step of mixing the mixed solution with an isocyanate compound (C) including at least one kind of a di- or higher-functional alicyclic isocyanate compound (c1) and/or a di- or higher-functional aliphatic isocyanate compound (c2) to prepare a polymerizable composition for optical materials;a step of injecting the polymerizable composition for optical materials into a mold; anda step of polymerization-curing the polymerizable composition for optical materials in the mold.3. The process for producing an optical material according to claim 1 ,wherein the imidazole-based curing catalyst (B) is at least one kind selected from the group consisting of dimethylimidazole and benzylmethylimidazole.4. The process for producing an optical material according to claim 1 ,wherein the alicyclic isocyanate compound (c1) is at least one kind selected from the group consisting of 1,3-bis(isocyanatomethyl)cyclohexane, 1,4-bis(isocyanatomethyl)cyclohexane, bis(4-isocyanatocyclohexyl)methane, ...

PLASTIC POLARIZED LENS AND PROCESS FOR PRODUCING SAME

Disclosed is a plastic polarized lens including a polarized film, and a base layer formed over at least one surface of the polarized film. The base layer is comprised of a (thio)urethane resin obtained by polymerizing and curing a polymerizable composition containing at least one kind of isocyanate selected from isophorone diisocyanate, bis(isocyanate cyclohexyl) methane, and bis(isocyanate methyl) cyclohexane, and an active hydrogen compound. 1. A plastic polarized lens , comprising:a polarized film; anda base layer formed over at least one surface of the polarized film,wherein the base layer is comprised of a (thio)urethane resin obtained from at least one kind of isocyanate selected from isophorone diisocyanate, bis(isocyanate cyclohexyl) methane, and bis(isocyanate methyl) cyclohexane, and an active hydrogen compound.2. The plastic polarized lens according to claim 1 ,wherein the active hydrogen compound is polyol or polythiol.3. The plastic polarized lens according to claim 2 ,wherein the polythiol is 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane.4. The plastic polarized lens according to claim 1 ,wherein the isocyanate contains isophorone diisocyanate.5. The plastic polarized lens according to claim 1 , further comprising:at least one kind of coat layers over the base layer.6. The plastic polarized lens according to claim 5 ,wherein at least one kind of the coat layer is a hard coat layer.7. The plastic polarized lens according to claim 1 ,wherein astigmatism is 0.05 D or less.8. A process for producing a plastic polarized lens claim 1 , comprising:a step of preparing a polymerizable composition containing at least one kind of isocyanate selected from isophorone diisocyanate, bis(isocyanate cyclohexyl) methane, and bis(isocyanate methyl) cyclohexane, and an active hydrogen compound; anda step of laminating a base layer comprised of a (thio)urethane resin which is obtained by polymerizing and curing the polymerizable composition over at least one surface of ...

METHOD FOR PRODUCING POLYTHIOL COMPOUND, METHOD FOR PRODUCING CURABLE COMPOSITION, AND METHOD FOR PRODUCING CURED PRODUCT

The method for producing a polythiol compound includes reacting 2-mercaptoethanol having a water content of 3000 ppm or less on a mass basis, with epihalohydrin to obtain a halide represented by the formula (1), wherein X represents a halogen atom; and obtaining at least one polythiol compound selected from the group consisting of a polythiol compound represented by the formula (4), a polythiol compound represented by the formula (5), a polythiol compound represented by the formula (6), and a polythiol compound represented by the formula (7). 2. The method for producing a polythiol compound according to claim 1 ,wherein the alkali metal compound is an alkali metal compound selected from the group consisting of sodium sulfide and sodium hydroxide.3. The method for producing a polythiol compound according to claim 1 ,wherein the polythiol salt is a salt selected from the group consisting of a polythiol alkali metal salt and a polythiol ammonium salt.4. A method for producing a curable composition claim 1 , the method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'producing a polythiol compound according to the production method according to ; and'}mixing the produced polythiol compound with a polyiso(thio)cyanate compound to prepare the curable composition.5. A method for producing a cured product claim 1 , the method comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, 'producing a curable composition according to the production method according to ; and'}curing the produced curable composition to obtain the cured product.6. The method for producing a cured product according to claim 5 , wherein the curing is carried out by subjecting the curable composition to cast polymerization.7. The method for producing a cured product according to claim 5 , wherein the cured product is a spectacle lens base material.8. A method for producing a curable composition claim 5 , the method comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'producing ...

Method for producing cured product, cured product, and eyeglass lens substrate

Provided are: a method for producing a cured product, including a curable composition preparing step of preparing a curable composition containing a polyiso(thio)cyanate compound, a polythiol compound, and a curing catalyst having a water content of 5000 ppm or less on a mass basis, and a curing step of curing the curable composition to obtain a cured product; a cured product obtained by curing a curable composition containing a polyiso(thio)cyanate compound, a polythiol compound, and a curing catalyst having a water content of 5000 ppm or less on a mass basis; and an eyeglass lens substrate including the cured product.

METHOD FOR PRODUCING CURED PRODUCT, CURED PRODUCT, AND EYEGLASS LENS SUBSTRATE

Provided are: a method for producing a cured product, including a curable composition preparing step of preparing a curable composition by mixing a polythiol compound with a polyiso(thio)cyanate compound having a water content of 300 ppm or less on a mass basis, and a curing step of curing the curable composition to obtain a cured product; a cured product obtained by curing a curable composition containing a polythiol compound and a polyiso(thio)cyanate compound having a water content of 300 ppm or less on a mass basis; and an eyeglass lens substrate including the cured product. 1. A method for producing a cured product , comprising:preparing a curable composition by mixing a polythiol compound with a polyiso(thio)cyanate compound having a water content of 300 ppm or less on a mass basis; andcuring the curable composition to obtain a cured product.2. The method for producing a cured product according to claim 1 ,wherein the polyiso(thio)cyanate compound has a water content of 5 ppm or more and 300 ppm or less on a mass basis.3. The method for producing a cured product according to claim 1 ,wherein the curing is performed by subjecting the curable composition to cast polymerization.4. The method for producing a cured product according to claim 1 ,wherein the cured product is an eyeglass lens substrate.5. A cured product obtained by curing a curable composition containing a polythiol compound and a polyiso(thio)cyanate compound having a water content of 300 ppm or less on a mass basis.6. The cured product according to claim 5 ,wherein the polyiso(thio)cyanate compound has a water content of 5 ppm or more and 300 ppm or less on a mass basis.7. An eyeglass lens substrate comprising the cured product according to . This application is a Continuation of PCT International Application No. PCT/JP2016/069445 filed on Jun. 30, 2016, which was published under PCT Article 21(2) in Japanese. The above application is hereby expressly incorporated by reference, in its entirety, ...

METHOD FOR PRODUCING CURED PRODUCT, CURED PRODUCT, AND EYEGLASS LENS SUBSTRATE

Provided are: a method for producing a cured product, including a curable composition preparing step of preparing a curable composition by mixing a polyiso(thio)cyanate compound with a polythiol compound having a water content of less than 20 ppm on a mass basis, and a curing step of curing the curable composition to obtain a cured product; a cured product obtained by curing a curable composition containing a polyiso(thio)cyanate compound and a polythiol compound having a water content of less than 20 ppm on a mass basis; and an eyeglass lens substrate including the cured product. 1. A method for producing a cured product , comprising:preparing a curable composition by mixing a polyiso(thio)cyanate compound with a polythiol compound having a water content of less than 20 ppm on a mass basis; andcuring the curable composition to obtain a cured product.2. The method for producing a cured product according to claim 1 ,wherein the polythiol compound has a water content of 5 ppm or more and less than 20 ppm on a mass basis.3. The method for producing a cured product according to claim 1 ,wherein the curing is performed by subjecting the curable composition to cast polymerization.4. The method for producing a cured product according to claim 1 ,wherein the cured product is an eyeglass lens substrate.5. A cured product obtained by curing a curable composition containing a polyiso(thio)cyanate compound and a polythiol compound having a water content of less than 20 ppm on a mass basis.6. The cured product according to claim 5 ,wherein the polythiol compound has a water content of 5 ppm or more and less than 20 ppm on a mass basis.7. An eyeglass lens substrate comprising the cured product according to . This application is a Continuation of PCT International Application No. PCT/JP2016/069442 filed on Jun. 30, 2016, which was published under PCT Article 21(2) in Japanese. The above application is hereby expressly incorporated by reference, in its entirety, into the present ...

Actinic radiation-curable urethane/urea-containing aerospace coatings and sealants

Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.

Coating Compositions Containing Odor Control Agents and Methods of Forming Coatings Therefrom

A coating composition includes: (a) (i) a thiol functional compound and (ii) an ethylenically unsaturated compound reactive with (i); (b) a catalyst that catalyzes a reaction between (i) and (ii); and (c) an odor masking agent that masks an odor of at least (i) the thiol functional compound. A method of forming the coating is also included.

Polyrotaxane, Production Method Therefor, and Optical Composition Containing said Polyrotaxane

The present invention provides an optical composition from which an optical article having reduced poor appearance such as cloudiness and optical strain during lens base material production can be obtained, and when a photochromic compound is added, a photochromic cured body having excellent photochromism and mechanical strength can also be formed, and a polyrotaxane used therefor. The polyrotaxane has a composite molecular structure formed of an axle molecule and a plurality of cyclic molecules clathrating the axle molecule, satisfying at least one of (X) and (Y). (X): A side chain having a secondary or tertiary hydroxyl group is introduced into at least part of the cyclic molecule of the polyrotaxane. (Y): A side chain having a group represented by -A (A is an organic group, and contains at least one hydroxyl group) is introduced into at least part of the cyclic molecule of the polyrotaxane, and a pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14.

Method for setting polymerization condition and method for manufacturing optical material

A method for setting polymerization condition includes a physical property acquiring step of, when heating a composition including a polymerization-reactive compound and a polymerization catalyst and/or a polymerization initiator and retaining heat at a predetermined temperature, acquiring a physical property value a derived from a functional group before heating of the polymerization-reactive compound and a physical property value b derived from a remaining functional group after maintaining a temperature for a predetermined time; a remaining functional group ratio calculating step of calculating a remaining functional group ratio from the physical property value a and the physical property value b; a reaction rate coefficient calculating step of calculating a reaction rate coefficient from the remaining functional group ratio on the basis of a reaction rate equation; and a polymerization temperature calculating step of calculating a polymerization temperature on the basis of the reaction rate coefficient and conditions below.

Polymerizable composition for optical component, optical component, and method for producing optical component

The polymerizable composition is a polymerizable composition for an optical component (excluding those subjected to a photopolymerization treatment) including a polyene compound; a polyiso(thio)cyanate compound; and a polythiol compound.

Novel thiol compound composition for optical material

According to the present invention, it is possible to provide a polythiol composition, which comprises a polythiol (A) represented by formula (1) and a thiol compound (B) represented by formula (2). (In formula (1), p and q each independently represent an integer of 1 to 3.) (In formula (2), p and q each independently represent an integer of 1 to 3.)

Process for producing polymerizable composition for optical materials

A process for producing a polymerizable composition for optical materials of the present invention includes a step A of mixing together a polyisocyanate compound (i), a polymer (ii) represented by General Formula (ii), a photochromic compound (iii), and an internal release agent (iv), a step B of mixing a mixed solution obtained by the step A with a polythiol compound (v), and a step C of further mixing a mixed solution obtained by the step B with a polymerization catalyst (vi) so as to obtain a polymerizable composition for optical materials, wherein in the step A, the internal release agent (iv) is added so that a content thereof in the polymerizable composition for optical materials is 500 to 3,000 ppm, and in the step C, the polymerization catalyst (vi) is added so that a content thereof in the polymerizable composition for optical materials is 120 to 500 ppm. R 1 A 1 —R 2 —A 2 —R 3 ] n   (ii)

POLYTHIOL COMPOSITION, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND USE THEREOF

A polythiol composition according to the present invention includes a polythiol compound (A) having three or more mercapto groups and a nitrogen-containing compound (B) in which one of a mercapto group of the polythiol compound (A) is replaced with a group represented by the following formula (a) and other one of a mercapto group of the polythiol compound (A) is replaced with a hydroxyl group, in which the peak area of the nitrogen-containing compound (B) is equal to or less than 3.0 with respect to the peak area of 100 of the polythiol compound (A) in a high performance liquid chromatography measurement. 4. A polymerizable composition for an optical material comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the polythiol composition according to ; and'}a poly(thio)isocyanate compound.5. A method of manufacturing a molded product , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'mixing the polythiol composition according to and a poly(thio)isocyanate compound to obtain a polymerizable composition for an optical material; and'}injecting the polymerizable composition into a mold and curing the composition.6. A molded product which is obtained by curing the polymerizable composition according to .7. An optical element comprised of the molded product according to .8. A lens comprised of the optical element according to . The present invention relates to a polythiol composition, a polymerizable composition for an optical material and use thereof.Since a plastic lens is lighter, hardly broken and capable of being dyed, compared to an inorganic lens, the plastic lens has recently become widely used rapidly in an optical element such as a spectacle lens or a camera lens.Higher performance has been demanded for a resin for the plastic lens and high refractive index, high Abbe number, low density, high heat-resistance, or the like has been required. So far various kinds of resin materials for the lens have been developed and used.Among these, an ...

PROCESS FOR PRODUCING PLASTIC LENS AND APPARATUS FOR PRODUCING PLASTIC LENS

A process for producing a plastic lens includes a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank; a step of transferring the polymerizable composition obtained in the step from the preparation tank to a lens casting mold; a step of curing the polymerizable composition; and a step of obtaining a plastic lens molded product by separating the obtained resin from the lens casting mold. The step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold. 1. A process for producing a plastic lens comprising:a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank;a step of transferring a polymerizable composition obtained in the step from the preparation tank to a lens casting mold;a step of curing the polymerizable composition; anda step of separating a cured resin from the lens casting mold to obtain a plastic lens molded product,wherein the step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold.2. The process for producing a plastic lens according to claim 1 ,wherein the step of transferring the polymerizable composition includes a step of transferring the polymerizable composition discharged from the preparation tank while carrying out re-mixing, and injecting the polymerizable composition into the lens casting mold.3. The process for producing a plastic lens according to claim 2 ,wherein the step of transferring the polymerizable composition includes a step of passing the polymerizable composition discharged from the preparation tank inside a motionless mixer, transferring the polymerizable composition while carrying out re-mixing, and injecting ...

Method of preparing diisocyanate composition and optical lens

In the embodiments, an aqueous hydrochloric acid solution instead of hydrogen chloride gas and solid triphosgene instead of phosgene gas may be used in the process of preparing a diisocyanate from a diamine through a diamine hydrochloride. In addition, the embodiments provide processes for preparing a diisocyanate composition and an optical lens of higher quality by controlling the water content in the diamine hydrochloride composition for preparing a diisocyanate within a specific range.

Polymerizable composition, optical member, plastic lens, and eyeglass lens

Provided are a polymerizable composition allowing obtainment of an optical component with reduced striae, an optical component obtained from the polymerizable composition, a plastic lens containing the optical component, and a spectacle lens including a lens substrate including the optical component. The polymerizable composition of the present disclosure contains an isocyanate component which contains alicyclic polyisocyanate (A-1) having two or more isocyanate groups and non-cyclic aliphatic polyisocyanate (A-2) having two or more isocyanate groups, and a polythiol component which contains polythiol (B-1) having four or more mercapto groups and two or more sulfide bonds and polythiol (B-2) having two or three mercapto groups and two or three ester bonds. The optical component is obtained by polymerizing the polymerizable composition of the present disclosure. The plastic lens contains the optical component of the present disclosure. The spectacle lens includes a lens substrate which includes the optical component.

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND OPTICAL MATERIAL AND PLASTIC LENS OBTAINABLE FROM SAME COMPOSITION

A polymerizable composition for an optical material according to the present invention includes one or two or more compounds selected from the group consisting of component (A): an ester compound having a specific structure and component (B): an ether compound having a specific structure, and a polymerizable compound. 2. The polymerizable composition for an optical material according to claim 1 , further comprising component (C) claim 1 , {'br': None, 'sub': 2', '7', 'p, 'HO(CHCHRO)H\u2003\u2003(5)'}, '(C) (poly)alkylene glycol represented by General Formula (5)'}(in General Formula (5), a plurality of present R7 may be the same or different and each R7 represents a hydrogen atom or a methyl group, and p represents an integer of 1 to 20).3. The polymerizable composition for an optical material according to claim 2 , wherein a total weight of components (A) claim 2 , (B) and (C) in the polymerizable composition for an optical material is 0.01 to 7.5% by weight with respect to 100% by weight of the polymerizable composition for an optical material.4. The polymerizable composition for an optical material according to claim 2 , wherein component (C) is included in a range of 0.01 to 1% by weight in 100% by weight of the polymerizable composition for an optical material.5. The polymerizable composition for an optical material according to claim 1 , wherein the polymerizable compound is one or two or more types of compounds selected from a polyiso(thio)cyanate compound claim 1 , a poly(thio)epoxy compound claim 1 , a polyoxetanyl compound claim 1 , a polythietanyl compound claim 1 , a poly(meth)acryloyl compound claim 1 , a polyalkene compound claim 1 , an alkyne compound claim 1 , a poly(thi)ol compound claim 1 , a polyamine compound claim 1 , an acid anhydride claim 1 , or a polycarboxylic acid compound.6. A molded article obtainable by curing the polymerizable composition for an optical material according to .7. An optical material comprising: the molded article ...

Molded product and uses thereof

A molded product of the present invention includes a polythiourethane, in which an SH group concentration according to an IR analysis method is 0.30 wt % to 3.0 wt %.

POLYMERIZABLE COMPOSITION FOR OPTICAL MEMBERS, OPTICAL MEMBER AND EYEGLASS LENS

A polymerizable composition for optical components, which can prevent striae while keeping strength for optical components when a thick optical component is produced. A polymerizable composition for optical components is a mixture of a first composition including a polyisocyanate compound (A) and a second composition including a polythiol compound (B1) and a thiol group-containing substance (B2), the composition includes the thiol group-containing substance (B2) showing peak at a position at retention time three minutes or more from a peak of the polythiol compound (B1) in a chromatogram obtained by analyzing the composition by high performance liquid chromatography (HPLC) analysis, and the ratio (A/B1) is 80/100 to 95/100, wherein the equivalent ratio (A/B1) is an equivalent A of the polyisocyanate compound (A) using a weight and group number of the polyisocyanate compound (A) to B1 of the polythiol compound (B1) using a weight and group number of the polythiol compound (B1). 1. A polymerizable composition for optical components , comprising a polyisocyanate compound (A) and a polythiol compound (B1) ,the polymerizable composition for optical components being a mixture of a first composition including the polyisocyanate compound (A) and a second composition including the polythiol compound (B1) and a thiol group-containing substance (B2),the polymerizable composition further comprising the thiol group-containing substance (B2) showing a peak at a position corresponding to a retention time three minutes or more later from a position of a peak of the polythiol compound (B1) in a chromatogram obtained by analyzing the second composition by high performance liquid chromatography (HPLC) analysis under the following condition, and HPLC system: LC-30A, manufactured by Shimadzu Corporation', 'column: YMC Triart C18 (3 to 150 mm, 3 μm)', 'column temperature: 50° C.', 'mobile phase: 0.1% aqueous formic acid solution (liquid A), acetonitrile (liquid B)', 'gradient elution ...

NON-AQUEOUS CROSSLINKABLE COMPOSITION

The present invention relates to a crosslinkable composition comprising a polyol, a polyisocyanate crosslinker, a catalyst for catalysing the reaction between —OH groups of said polyol and —NCO groups of said crosslinker, a tertiary acid of formula RR′R″CCOOH (I), wherein each R, R′ and R″ group, independently, is an alkyl, alkenyl, aryl or aralkyl group containing at least one carbon atom, with the proviso that two or three of the R, R′ and R″ groups can be linked to form a ring structure and wherein the R, R′ and/or R″ groups can be substituted, and optionally, a complexing agent containing at least one —SH group, as well as its use for making coatings having improved application properties. 1. A crosslinkable composition comprisinga) a polyol having free —OH groups,b) a polyisocyanate crosslinker having free —NCO groups,c) a catalyst for catalysing the reaction between —OH groups of said polyol a) and —NCO groups of said crosslinker b),d) a tertiary acid of formula RR′R″CCOOH (I), wherein each R, R′ and R″ group, independently, is an alkyl, alkenyl, aryl or aralkyl group containing at least one carbon atom, with the proviso that two or three of the R, R′ and R″ groups can be linked to form a ring structure and wherein the R, R′ and/or R″ groups can be substituted, and wherein the total number of carbon atoms in the R, R′ and R″ groups is the range of from 3 to 40, ande) optionally, a complexing agent containing at least one —SH group.2. The crosslinkable composition according to claim 1 , wherein the complexing agent e) is present and is selected from organic compounds.3. The crosslinking composition according to claim 2 , wherein the complexing agent e) is selected from those of formula R—SH (II) claim 2 , wherein R can be an alkyl claim 2 , alkenyl claim 2 , aryl or aralkyl group claim 2 , optionally substituted with one or more other functional groups such as for example hydroxyl groups claim 2 , primary claim 2 , secondary or tertiary amine groups claim 2 , ...

URETHANE-MODIFIED PREPOLYMERS CONTAINING PENDENT ALKYL GROUPS, COMPOSITIONS AND USES THEREOF

Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications. 1. A polythiol adduct comprising the condensation reaction products of reactants comprising:a polythiol; anda ketone.2. The polythiol adduct of claim 1 , wherein the polythiol adduct has a thiol functionality from 2 to 6.3. The polythiol adduct of claim 1 , wherein the polythiol comprises a dithiol claim 1 , wherein the dithiol comprises dimercaptodiethylsulfide (DMDS) claim 1 , 3 claim 1 ,6-dioxa-1 claim 1 ,8-octanedithiol (DMDO) claim 1 , or a combination thereof.4. The polythiol adduct of claim 1 , wherein the ketone comprises propan-2-one claim 1 , methyl ethyl ketone (butan-2-one) claim 1 , pentan-2-one claim 1 , hexan-2-one claim 1 , pentan-3-one claim 1 , 3-methylbutan-2-one claim 1 , 3-methylpentan-2-one claim 1 , 4-methylhexan-3-one claim 1 , 2-methylpentan-3-one claim 1 , 2 claim 1 ,4-dimethylpentan-3-one claim 1 , or a combination thereof.5. The polythiol adduct of claim 1 , wherein:the polythiol comprises dimercaptodiethylsulfide, 3,6-dioxa-1,8-octanedithiol, or a combination thereof; andthe ketone comprises methyl ethyl ketone.6. The polythiol adduct of claim 1 , wherein claim 1 , {'br': None, 'sup': 3', '3, 'sub': p', 'q', 'r, 'HS—[—(CHR)—X—]—(CHR)—SH\u2003\u2003(1)'}, 'the polythiol comprises a dithiol having the structure of Formula (1) [{'sup': '3', 'each Ris selected ...

LIGHTFAST POLYURETHANE COMPOSITIONS

The present invention relates to a composition comprising 10 to 50 wt.-% of at least one polyisocyanate a-1) based on hexamethylene diisocyanat, comprising at least one oligomeric polyisocyanate based on hexamethylene diisocyanate and optionally monomeric hexamethylene diisocyanate and 50 to 90 wt.-% of at least one polyisocyanate a-2) based on isophorone diisocyanate, comprising at least one oligomeric polyisocyanate based on isophorone diisocyanate and optionally monomeric isophorone diisocyanate, with the proviso that at least one of the components a-1) and a-2) additionally comprises monomeric isocyanate of the named kind, as well as at least one sulfur-containing component. It has been shown that the above mentioned mixture of the specific isocyanate group containing components improves the thermal and mechanical properties of a cured composition. Thus prepared molded articles are particularly suitable for the preparation of spectacle lenses, inter alia due to these properties. 115-. (canceled)16. A method for preparing an optical lens comprising utilizing a composition , comprising and', '50 to 90 wt.-% of at least one polyisocyanate a-2) based on isophorone diisocyanate, comprising at least one oligomeric polyisocyanate based on isophorone diisocyanate and optionally monomeric isophorone diisocyanate,', 'with the proviso that,', 'the polyisocyanate a-1) comprises monomeric hexamethylene diisocyanate, or', 'the polyisocyanate a-2) comprises monomeric isophorone diisocyanate, or', 'the polyisocyanate a-1) comprises monomeric hexamethylene diisocyanate and the polyisocyanate a-2) comprises monomeric isophorone diisocyanate', 'wherein the %-data relate to the sum of components a-1) and a-2),, 'A) 10 to 50 wt.-% of at least one polyisocyanate a-1) based on hexamethylene diisocyanate, comprising at least one oligomeric polyisocyanate based on hexamethylene diisocyanate and optionally monomeric hexamethylene diisocyanate'} 'and optionally', 'B) at least one sulfur- ...

POLYMERIZABLE COMPOSITION FOR A PLASTIC LENS

Embodiments relate to a polymerizable composition for a plastic lens. The polymerizable composition for a plastic lens according to the embodiment further comprises a diketone compound for the purpose of controlling the strong activity of a halogenated tin-based catalyst. Further, the polymerizable composition is preliminarily polymerized at a low temperature of 5 to 20° C. for a certain period of time, specifically 1 to 20 hours. Since it is possible to stabilize the reaction rate of the composition and to properly control the viscosity of the composition, a more stable pot life is attained, thereby improving the workability. In addition, the generation of bubbles is prevented, thereby improving the transparency of the resin. Hence, the polymerizable composition can be advantageously used for fabricating various plastic lenses such as eyeglass lenses, camera lenses, and the like. 1. A polymerizable composition , which comprises a polyiso(thio)cyanate compound;a bi- or higher functional thiol compound having at least one sulfide bond or at least one ester bond; anda catalyst, and {'br': None, 'i': 'Y=b×ΔX', 'Δ ln \u2003\u2003[Equation 1]'}, 'which satisfies the following Equation 1{'sub': X', '0, 'wherein Δ ln Y is ln Y−ln Y,'}{'sub': '0', 'Yis the initial viscosity (cps) of the polymerizable composition,'}{'sub': 'X', 'Yis the viscosity (cps) of the polymerizable composition at a temperature of 10° C. after X hour(s) elapse,'}ΔX is from 1 hour to 10 hours, and{'sup': −1', '−1, 'b is the slope of a graph derived from the value of Δ ln Y measured with respect to X time and is 0.1 hourto 0.3 hour.'}2. The polymerizable composition of claim 1 , wherein the catalyst is a halogenated tin-based catalyst.3. The polymerizable composition of claim 1 , which further comprises a diketone compound.4. The polymerizable composition of claim 1 , which has an initial viscosity of 20 to 100 cps at 10° C.5. The polymerizable composition of claim 2 , wherein the halogenated tin-based ...

Polymer with urethane or thiourethane units for use, in particular, as an adhesion primer for bonding metal to rubber

A polymer has urethane or thiourethane units, which can be used, in particular, as an adhesion primer for the adhesive bonding of metal or glass to rubber. The polymer comprises base units comprising at least a sub-unit of formula —X 1 —CO—NH— in which X 1 respectively represents O or S, and additional units comprising at least a secondary alcohol function and a thioether function in the α position relative to the alcohol function. The polymer can be used as an adhesion primer for the adhesive bonding of a substrate, for example glass or metal, to an unsaturated rubber, or as a corrosion-resistant protective coating for a metal substrate. A metal reinforcer, such as wire, cord, film or plate, can be coated with the polymer.

COMPOSITION FOR OPTICAL MATERIAL

According to the present invention, a composition for an optical material contains a compound (a), a compound (b), and a polyisocyanate compound (c), and can suppress the generation of striae defects. The compound (a) is a compound having a structure represented by formula (1). 3. The composition for optical materials according to claim 2 , wherein the molar ratio of NCO groups to the total amount of SH groups and OH groups (NCO/(SH+OH)) is 0.7 to 1.5.4. An optical material obtained by polymerizing and curing the composition for optical materials according to .5. A lens comprising the optical material according to .6. An optical material obtained by polymerizing and curing the composition for optical materials according to .7. A lens comprising the optical material according to . The present invention relates to a composition for optical materials comprising a specific polythiol compound and a polyisocyanate compound, and further relates to an optical material made of a thiourethane resin obtained by polymerizing the composition for optical materials.Plastic materials are lightweight, highly tough and easy to be dyed, and therefore are widely used recently for various types of optical materials, particularly eyeglass lenses. Optical materials, particularly eyeglass lenses, are specifically required to have, as main physical properties, low specific gravity, high transparency and low yellowness, and as optical properties, high refractive index and high Abbe number. With respect to thiourethane resins for optical lenses and plastic lenses produced by utilizing the same, many patent applications were filed, and uncolored lenses having a high refractive index and high transparency have been proposed.However, in the case of powerful lenses made of thiourethane resins, striae may be generated, and reduction in the yield is caused thereby. For this reason, proposes about the type of a polymerization catalyst and a method for addition thereof, and about a stabilizer for an ...

Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof

Provided is a method for producing a polythiol compound, comprising: a step for reacting a polyalcohol compound represented by the following formula (4) with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt; a step for adding, while maintaining a reaction solution containing the isothiuronium salt thus obtained at a temperature of 20° C. to 60° C., aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing the isothiuronium salt to obtain a polythiol compound containing, as a main component, one kind or two or more kinds selected from the group consisting of compounds represented by the following formulae (6) to (8); and a step for adding hydrochloric acid which is a concentration of 30% to 36% to the solution containing the polythiol compound thus obtained, washing the solution at a temperature of 30° C. to 55° C. to purify the polythiol compound.

Polyisocyanates having thioallophanate structure

The invention relates to polyisocyanates that have aliphatically, cycloaliphatically, araliphatically and/or aromatically bonded isocyanate groups and contain thioallophanate structures of formula (I), to a method for producing them, and to their use as starting components in the production of polyurethane plastics.

Composition for producing transparent polythiourethane bodies

The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at least 2 per molecule, B) a thiol component containing at least one polythiol with a functionality of thiol groups of at least two per molecule, in addition to optionally C) auxiliary agents and additives, the ratio of isocyanate groups to groups reactive in relation to isocyanates being 0.5:1 to 2.0:1. The composition is characterised in that the polyisocyanate of the polyisocyanate component A) is produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines. The invention also relates to a method for producing transparent polythiourethane bodies by the conversion of a composition of this type, to polythiourethane bodies produced in this manner and to the use of polyisocyanates, produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines, for producing transparent polythiourethane bodies.

URETHANE-MODIFIED PREPOLYMERS CONTAINING PENDENT ALKYL GROUPS, COMPOSITIONS AND USES THEREOF

Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications. 1. A polythiol adduct comprising the condensation reaction products of reactants comprising:a polythiol; anda ketone.2. The polythiol adduct of claim 1 , wherein claim 1 , {'br': None, 'sup': 3', '3, 'sub': p', 'q', 'r, 'HS—[(-CHR)—X—]-(CHR)—SH\u2003\u2003(1)'}, 'the polythiol comprises a polythiol having the structure of Formula (1) [{'sup': '3', 'each Rcomprises hydrogen or methyl;'}, 'each X is independently selected from O and S;', 'p is an integer from 2 to 6;', 'q is an integer from 1 to 5; and', 'r is an integer from 2 to 10; and., 'wherein,'} [{'br': None, 'sup': 4', '4, 'R—C(═O)—R\u2003\u2003(3)'}, {'sup': '4', 'sub': '1-5', 'wherein each Rindependently comprises Calkyl.'}], 'the ketone comprises a ketone having the structure of Formula (3)3. The polythiol adduct of claim 1 , wherein claim 1 ,the polythiol comprises dimercaptodiethylsulfide, 3,6-dioxa-1,8-octanedithiol, or a combination thereof; andthe ketone comprises methyl ethyl ketone.4. A polythiol adduct having the structure of Formula (6):{'br': None, 'sup': 1', '2', '1, 'sub': 'n', 'HS—(-R—S—R—S—)-R—SH\u2003\u2003(6)'} n is an integer from 1 to 10;', {'sup': '1', 'claim-text': [{'br': None, 'sup': 3', '3, 'sub': p', 'q', 'r, '-[—(CHR)—X—]-(CHR)—\u2003\u2003(1a)'}, [{'sup': '3', 'each Rcomprises hydrogen or methyl;'}, ' ...

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND USE THEREOF

Provided is a polymerizable composition for an optical material including (A) an amine having two or more secondary amino groups, (B) an isocyanate having two or more isocyanato groups, and (C) a thiol having three or more mercapto groups, in which the ratio (a/b) of the molar number a of amino groups in the amine (A) with respect to the molar number b of isocyanato groups in the isocyanate (B) is in the range of 0.10 to 0.60. 1. A polymerizable composition for an optical material , comprising:(A) an amine having two or more secondary amino groups;(B) an isocyanate having two or more isocyanato groups; and(C) a thiol having three or more mercapto groups,wherein the ratio (a/b) of the molar number a of amino groups in the amine (A) with respect to the molar number b of isocyanato groups in the isocyanate (B) is in the range of 0.10 to 0.60.2. The polymerizable composition for an optical material according to claim 1 , wherein the amine (A) is comprised of one or more compounds selected from a secondary aliphatic amine and a secondary alicyclic amine.3. The polymerizable composition for an optical material according to claim 1 , wherein the amine (A) has two or more secondary amino groups represented by the formula: —NHR claim 1 , and two or more R's may be the same or different from each other and are selected from an isopropyl group claim 1 , a 1 claim 1 ,2 claim 1 ,2-trimethylpropyl group claim 1 , a tert-butyl group claim 1 , a sec-butyl group claim 1 , and a 1 claim 1 ,3-dimethylbutyl group.4. The polymerizable composition for an optical material according to claim 1 , wherein the molecular weight of the amine (A) is 600 or less.5. The polymerizable composition for an optical material according to claim 1 , wherein the amine (A) is comprised of one or more compounds selected from N claim 1 ,N′-di-tert-butyl-ethylenediamine claim 1 , N claim 1 ,N′-di(1 claim 1 ,2 claim 1 ,2-trimethylpropyl)-1 claim 1 ,6-hexamethylenediamine claim 1 , N claim 1 ,N′-di-isopropyl-m- ...

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, OPTICAL MATERIAL OBTAINED FROM COMPOSITION, METHOD OF PRODUCING SAME

According to the present invention, provided is a polymerizable composition for an optical material including: at least one amine compound (A) selected from a compound (a1) represented by Formula (1) and a compound (a2) represented by Formula (2); an iso(thio)cyanate compound (B) which contains two or more iso(thio) cyanate groups; and a polythiol compound (C) which contains a dithiol compound (c1) containing two mercapto groups and a polythiol compound (c2) containing three or more mercapto groups. 2. The polymerizable composition for an optical material according to claim 1 , further comprising:a polyol compound (D) which contains two or more hydroxy groups.3. The polymerizable composition for an optical material according to claim 1 ,wherein a ratio (c1/c2) of a molar number c1 of a mercapto group in a polythiol compound (c1) to a molar number c2 of a mercapto group in a polythiol compound (c2) is in a range of 1 to 13.4. The polymerizable composition for an optical material according to claim 1 ,wherein a ratio (a/b) of a molar number a of an amino group in an amine compound (A) to a molar number b of an iso(thio)cyanate group in an iso(thio)cyanate compound (B) is in a range of 0.01 to 0.20.5. The polymerizable composition for an optical material according to claim 1 ,wherein a weight-average molecular weight (MW) of the compound (a1) represented by Formula (1) is in a range of 200 to 4000.6. The polymerizable composition for an optical material according to claim 1 ,wherein a weight-average molecular weight (MW) of the compound (a2) represented by Formula (2) is in a range of 400 to 5000.7. The polymerizable composition for an optical material according to claim 1 ,wherein the dithiol compound (c1) is at least one selected from the group consisting of 2,5-dimercaptomethyl-1,4-dithiane, ethylene glycol bis(3-mercaptopropionate), 4,6-bis(mercaptomethylthio)-1,3-dithiane, 2-(2,2-bis(mercaptomethylthio)ethyl)-1,3-dithietane, and bis(2-mercaptoethyl)sulfide, andthe ...

VAT RESIN WITH ADDITIVES FOR THIOURETHANE POLYMER STEREOLITHOGRAPHY PRINTING

A vat resin for three-dimensional stereolithography printing of a thiourethane polymer part comprising a liquid mixture including a first type of monomer, a second type of monomer, a photolatent base decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7, an anionic step-growth polymerization reaction inhibitor having an acidic group configured to form an acid-base pair with the non-nucleophillic base and a light absorber having an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure. Methods of preparing the vat resin and three-dimensional stereolithography printing a thiourethane polymer part using the vat resin are also disclosed. 1. A vat resin for three-dimensional stereolithography printing of a thiourethane polymer part comprising: a first type of monomer including two or more thiol functional groups,', 'a second type of monomer including two or more isocyanate functional groups,', 'a photolatent base, wherein the photolatent base is decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7;', 'an anionic step-growth polymerization reaction inhibitor, the inhibitor having an acidic group configured to form an acid-base pair with the non-nucleophillic base; and', 'a light absorber having an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure., 'a liquid mixture including2. The vat resin of claim 1 , wherein the vat resin is substantially free of water.3. The vat resin of claim 1 , wherein a mole ratio of the photolatent base to the anionic step-growth polymerization reaction inhibitor is in a range from about 5:1 to 15:1.4. The vat resin of claim 1 , wherein the anionic step-growth polymerization reaction inhibitor is a strong organic acid and is non-oxidizing with respect to ...

THIOL-ENE PRINTABLE RESINS FOR INKJET 3D PRINTING

A composition suitable for 3-D printing comprises, in one embodiment, a photopolymer including one or more thiol monomer, one or more alkene monomer, and a polymerization initiator. In another embodiment, the thiol monomer is selected from the group consisting of: glycol di(3-mercaptopropionate) [GDMP]; trimethylolpropane tris(3-mercaptopropionate) [TMPMP]; pentaerythritol tetrakis(3-mercaptopropionate) [PETMP] and 3,6-dioxa-1,8-octanedithiol [DODT]. In yet another embodiment, the alkene monomer comprises: an allyl-functional urethane/urea monomer synthesized from: an isocyanate moiety and a hydroxyl or amine functional allyl moiety. In still another embodiment, the hydroxyl or amine functional allyl moiety comprises 2-allyloxyethanol, allyl alcohol, and allylamine. In still yet another embodiment, the isocyanate moiety is selected from the group consisting of: isophorone diisocyanate (IDI), hexamethylene diisocyanate (HDI), trimethylhexamethylene diisocyanate (TMHDI), 1,3-bis(isocyanatomethyl)cyclohexane, and dicyclohexylmethane 4,4′-Diisocyanate (HMDI). 1. A composition suitable for 3-D printing comprising:a photopolymer comprising one or more thiol monomer, one or more alkene monomer; anda polymerization initiator.2. The composition of claim 1 , wherein the thiol monomer is selected from the group consisting of:glycol di(3-mercaptopropionate) [GDMP]; trimethylolpropane tris(3-mercaptopropionate) [TMPMP]; pentaerythritol tetrakis(3-mercaptopropionate) [PETMP] and 3,6-dioxa-1,8-octanedithiol [DODT].3. A composition of claim 1 , wherein the alkene monomer comprises:an allyl-functional urethane/urea monomer synthesized from: an isocyanate moiety and a hydroxyl or amine functional allyl moiety.4. The composition of wherein the hydroxyl or amine functional allyl moiety comprises 2-allyloxyethanol claim 3 , allyl alcohol claim 3 , and allylamine.5. A composition of claim 3 , wherein the isocyanate moiety is selected from the group consisting of:isophorone diisocyanate ( ...

Iso(thio)cyanate composition, and resin composition including same for optical member

An iso(thio)cyanate composition for an optical component has excellent storage stability. The iso(thio)cyanate composition includes an iso(thio)cyanate compound having two or more iso(thio)cyanate groups in a molecule, a phosphoric acid ester compound represented by general formula (1), and a phosphoric acid ester compound represented by general formula (2). A total amount of the phosphoric acid ester compounds is 1 ppm or greater and less than 25,000 ppm, based on the mass of the iso(thio)cyanate compound. A molar ratio of the phosphoric acid ester compound represented by general formula (1) and the phosphoric acid ester compound represented by general formula (2) is 30/70 to 70/30.

Method for forming flexible cover lens films

Display modules typically incorporate a transparent hard material such as glass on the outside of the module in order to better protect the display stack from scratches, dents, and other mechanical deformations. However, as displays move to novel form factors such as bendable, foldable, and reliable display modules, these transparent hard materials (e.g., glass) may not be used due to their limited flexibility. Therefore, it is desirable that replacement materials be sufficiently flexible while maintaining the desirable optical (e.g., >90% transmission and low yellow index) and mechanical properties (e.g., pencil hardness >H) that comparable glass hard materials offer.

System for Packaging, Processing, Activating, and Deactivating Multiple Individual Transaction Cards as a Singular Unit

A transaction card processing and activation system comprising the identification of a unique identifier corresponding to an aggregate of transaction cards of affiliated or non-affiliated card issuers and the activation of each transaction card corresponding to the unique identifier of the aggregate irrespective of the number, types, or card issuers of the transaction cards. Additionally, the present invention allows a point of sale entity to initiate the activation of each of the multiple, disparate transaction cards in the aggregate by merely processing the unique identifier associated with the aggregate. 1. A package assembly for processing a plurality of transaction cards at a point of sale comprising:at least two transaction cards, each with a unique account identifier associated with a unique account;a package for securing the plurality of transaction cards, wherein the package comprises at least three distinct identifiers, wherein the at least three distinct identifiers comprise a unique package identifier, a vendor product identification code identifier, and an identifier which is a combination of the unique package identifier and the vendor product identification code identifier.2. The package assembly of claim 1 , wherein the package further comprises transaction cards issued by a singular card issuer.3. The package assembly of claim 1 , wherein the package further comprises transaction cards issued by a plurality of card issuers.4. The package assembly of claim 1 , wherein the package further comprises transaction cards issued by affiliated issuers.5. The package assembly of claim 1 , wherein the package further comprises transaction cards issued by non-affiliated issuers.6. The package assembly of claim 1 , wherein the package further comprises an identifier that is interpretable by a point of sale component.7. The package assembly of claim 1 , wherein the at least three distinct identifiers comprise bar codes claim 1 , magnetic strips claim 1 , series ...

POLYISOCYANATE MONOMER COMPOSITION FOR OPTICAL MEMBERS, AND OPTICAL MEMBER AND PRODUCTION METHOD THEREFOR

Provided are a polyisocyanate monomer composition for optical members, from which an optical members with which turbidity and clouding are difficult to occur during the production thereof, and which is excellent in transparency, can be obtained, and an optical member and production methods therefor. A polyisocyanate monomer composition for optical members, including 4,4′-diphenylmethane diisocyanate and at least one kind selected from 2,4′-diphenylmethane diisocyanate and 2,2′-diphenylmethane diisocyanate; an optical member formed of a polymer having a structure represented by the following formula (1), and at least one kind of structure represented by the following formula (2) or (3); and a method for producing an optical member, including a step of polymerizing a monomer composition including a polyisocyanate compound including 4,4′-diphenylmethane diisocyanate and at least one kind selected from 2,4′-diphenylmethane diisocyanate and 2,2′-diphenylmethane diisocyanate, and at least one kind selected from a polythiol compound and a polyol compound. 1. A polyisocyanate monomer composition for optical members , comprising 4 ,4′-diphenylmethane diisocyanate , and at least one kind selected from 2 ,4′-diphenylmethane diisocyanate and 2 ,2′-diphenylmethane diisocyanate.2. The polyisocyanate monomer composition for optical members according to claim 1 , wherein the rate of the total of the 2 claim 1 ,4′-diphenylmethane diisocyanate and 2 claim 1 ,2′-diphenylmethane diisocyanate with respect to the total amount of the polyisocyanate monomer composition for optical members is 5% by mass or more.3. The polyisocyanate monomer composition for optical members according to claim 1 , wherein the rate of the total of the 4 claim 1 ,4′-diphenylmethane diisocyanate with respect to the total amount of the polyisocyanate monomer composition for optical members is 10% by mass or more.6. The optical member according to claim 5 , wherein the numerical ratio (M2/M1) of the total (M2) of ...

Tagged poly(ester amide urethane)s, nanoparticles formed from same, and uses thereof

Provided are polymers (e.g., polymeric materials), nanoparticles comprising one or more of the polymers, and compositions. A polymer may be in the form of a nanoparticle. A polymer can be linear or branched. A polymer includes one or more poly(ester urea) segment, optionally, one or more poly(urethane) segment, optionally, one or more diol segment, optionally, one or more poly(ethylene glycol) segment, and, optionally, one or more terminal/end group. A polymer (e.g., a polymeric material) may include a branching moiety. For example, a composition includes one or more polymer. In an example, polymers and nanoparticles can be used to deliver a drug (e.g., gambogic acid) to an individual (e.g, who has been diagnosed with or is suspected of having cancer and/or a viral infection).

SHELF-STABLE RIGID FOAM FORMULATIONS

The shelf life of B-side compositions comprising a polyol, a surfactant, a blowing agent, an organometallic or metal salt catalyst wherein the metal of the catalyst comprises Zn or Bi, and from 1 to 10 weight percent water is improved by the addition of a thiol compound. 1. A B-side composition useful for preparing a rigid foam , the composition comprising a polyol , a surfactant , a blowing agent , a thiol compound , from 1 to 10 weight percent water , based on the weight of the composition , and an organometallic or metal salt catalyst wherein the metal of the catalyst comprises Zn or Bi.2. The composition of wherein the composition has a shelf life of at least 4 months.3. The composition of wherein the amount of water is from 2 to 5 wt. %.4. The composition of wherein the amount of water is from 3 to 5 wt. %.5. The composition of wherein the thiol is a saturated or unsaturated alkyl thiol claim 1 , including alky thiols with aromatic substitutions (e.g. benzyl thiol) claim 1 , mercaptoacetates claim 1 , mercaptopropionates claim 1 , poly(ethylene glycol) methyl ether thiols claim 1 , dithiols claim 1 , bis-PEG-thiols claim 1 , trithiols claim 1 , thioglycerol claim 1 , HSCHCH(OH)CHOH claim 1 , thiol-PEG-alcohols claim 1 , cysteine and derivatives and mixtures thereof.6. The composition of wherein the blowing agent comprises at least one of trans-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene (1234ze) and 1-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene (1233 zd).7. The composition of wherein a stoichiometric excess of the thiol is employed8. The composition of wherein the composition comprises from 60 to 95 wt. % polyol claim 1 , from 0.5 to 6.0 wt. % surfactant claim 1 , from 1 to 30 wt. % blowing agent claim 1 , not counting water claim 1 , from 0.0001 to 10 wt. % thiol compound claim 1 , from 0.001 wt. % to 5.0 wt. % catalyst and from 1 to 10 wt. % water claim 1 , based on 100 weight percent of the composition.9. A rigid foam prepared from an admixture ...

Novel method for preparing polythiol compound and polymeric composition for optical material comprising same

The present invention relates to novel methods for preparing a polythiol compound for use in an optical material and polymerizable compositions including a polythiol compound prepared by the methods. According to the methods, a polythiol compound with uniform color, high purity and high quality can be prepared at reduced cost. The polymerizable compositions can be used to manufacture clear, transparent optical lenses with good heat resistance and excellent optical properties.

THIOURETHANE POLYMERS, METHOD OF SYNTHESIS THEREOF AND USE IN ADDITIVE MANUFACTURING TECHNOLOGIES

A semi-crystalline thiourethane polymer. The semi-crystalline thiourethane polymer comprises a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages. Each of the first type of monomer includes two or more thiol functional groups and each of the second type of monomer includes two or more isocyanate functional groups. The first and second types of monomers are polymerized together in an anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7, produced by photo-initiated decomposition of a photolatent base. A method of synthesizing, and polymer jetting and stereolithography methods of manufacturing a polymer part, are also disclosed. 1. A semi-crystalline thiourethane polymer , comprising: each of the first type of monomer includes two or more thiol functional groups and each of the second type of monomer includes two or more isocyanate functional groups, and', 'the first and second types of monomers are polymerized together in an anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7, the non-nucleophillic base produced by photo-initiated decomposition of a photolatent base., 'a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages, wherein2. The polymer of claim 1 , wherein the first type of monomer is free of -ene or isocyanate functional groups and the second type of monomer is free of -ene or thiol functional groups.3. The polymer of claim 1 , wherein the first type of monomer only has thiol functional groups and the second type of monomer only has isocyanate functional groups.4. The polymer of claim 1 , wherein the first type of monomer has monomers with three or more thiol functional groups and monomers with two thiol functional groups.5. The polymer of claim 1 , wherein the second type of monomer has monomers with ...

Eyeglass lens

The present invention addresses the problem of providing an eyeglass lens that has excellent UV absorption properties and low yellowness. This eyeglass lens is produced using a resin composition that contains at least one isocyanate compound selected from the group consisting of 2,5-bis(isocyanatomethyl)bicyclo[2.2.1]heptane and 2,6-bis(isocyanatomethyl)bicyclo[2.2.1]heptane; a polythiol compound; a UV absorber represented by formula (1); and a UV absorber represented by formula (2). The M value represented by formula (X) is greater than 0.7 but less than 16.7.

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, OPTICAL MATERIAL, AND USE THEREOF

A polymerizable composition for an optical material of the present disclosure includes (A) an isocyanate compound, (B) at least one active hydrogen compound selected from the group consisting of a polythiol compound having two or more mercapto groups, a hydroxythiol compound having one or more mercapto groups and one or more hydroxyl groups, a polyol compound having two or more hydroxyl groups, and an amine compound, and (C) an ultraviolet absorber represented by General Formula (1). 5. The polymerizable composition for an optical material according to claim 1 ,wherein a maximum absorption peak of the ultraviolet absorber (C) is in a range of 340 nm to 370 nm.6. The polymerizable composition for an optical material according to claim 1 ,wherein the isocyanate compound (A) includes at least one selected from an aromatic isocyanate compound and an aromatic aliphatic isocyanate compound.7. The polymerizable composition for an optical material according to claim 6 ,wherein the isocyanate compound (A) is at least one selected from the group consisting of xylene diisocyanate, phenylene diisocyanate, tolylene diisocyanate, and diphenylmethane diisocyanate.8. The polymerizable composition for an optical material according to claim 2 ,wherein the compound (D) has two or more three- to five-membered cyclic structures including a sulfur atom in one molecule and a weight average molecular weight of 100 to 1000.10. The polymerizable composition for an optical material according to claim 1 ,wherein the polythiol compound (B) is at least one selected from the group consisting of 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, pentaerythritol tetrakis(2-mercaptoacetate), pentaerythritol tetrakis(3-mercaptopropionate), 2,5-bis(mercaptomethyl)-1,4-dithiane, bis(mercaptoethyl)sulfide, 1,1,3,3-tetrakis( ...

Polymerizable composition for optical material, optical material obtained from composition, method of producing same

According to the present invention, provided is a polymerizable composition for an optical material including: at least one amine compound (A) selected from a compound (a1) represented by Formula (1) and a compound (a2) represented by Formula (2); an iso(thio)cyanate compound (B) which contains two or more iso(thio)cyanate groups; and a polythiol compound (C) which contains a dithiol compound (c1) containing two mercapto groups and a polythiol compound (c2) containing three or more mercapto groups.

METHOD OF MANUFACTURING POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND METHOD OF MANUFACTURING OPTICAL MATERIAL

A method of manufacturing a polymerizable composition for an optical material according to the present invention includes a step of mixing an iso(thio)cyanate compound (A1) and an organic coloring matter (B), so as to obtain a mixed solution a, a step of mixing the mixed solution a, an ultraviolet absorbing agent (D), and an iso(thio)cyanate compound (A2) which is identical to or different from the iso(thio)cyanate compound (A1), so as to obtain a mixed solution b, and a step of mixing a mixed solution b and an active hydrogen compound (C). 1. A method of manufacturing a polymerizable composition for an optical material , comprising:a step of mixing an iso(thio)cyanate compound (A1) and an organic coloring matter (B) to obtain a mixed solution a;a step of mixing the mixed solution a, an ultraviolet absorbing agent (D), and an iso(thio)cyanate compound (A2) which is identical to or different from the iso(thio)cyanate compound (A1) to obtain a mixed solution b; anda step of mixing the mixed solution b and an active hydrogen compound (C).3. The method of manufacturing a polymerizable composition for an optical material according to claim 2 ,wherein, in a tetraazaporphyrin compound represented by Formula (1), M represents a divalent copper atom.5. The method of manufacturing a polymerizable composition for an optical material according to claim 1 ,wherein the active hydrogen compound (C) is a polythiol compound.6. The method of manufacturing a polymerizable composition for an optical material according to claim 5 ,wherein the polythiol compound includes one or more compounds selected from the group consisting of pentaerythritol tetrakis(2-mercaptoacetate), pentaerythritol tetrakis(3-mercaptopropionate), bis(2-mercaptoethyl) sulfide, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 2,5- ...

COMPOSITION FOR OPTICAL MATERIAL, AND METHOD FOR PRODUCING SAME

A composition for an optical material includes (a) a compound having two β-epithiopropyl groups and having a specific structure, (b) a compound having one β-epithiopropyl group and one glycidyl group and having a specific structure, (c) polyisocyanate and (d) polythiol, enables the prevention of the occurrence of such a defect that peeling traces linger on a lens. In the composition for an optical material, an embodiment in which (e) sulfur is additionally contained is preferred. Another embodiment of the present invention is a method for producing an optical material, characterized by adding an onium salt as a polymerization catalyst to the composition for an optical material in an amount of 0.0001 to 10% by mass relative to the total amount of the compound (a), the compound (b), polyisocyanate (c) and polythiol (d) and then polymerizing and curing the resultant mixture. 2. The composition for optical materials according to claim 1 , wherein the polyisocyanate (c) is at least one compound selected from the group consisting of isophorone diisocyanate claim 1 , tolylene diisocyanate claim 1 , diphenylmethane diisocyanate claim 1 , hexamethylene diisocyanate claim 1 , m-xylylene diisocyanate claim 1 , p-xylylene diisocyanate claim 1 , m-tetramethyl xylylene diisocyanate claim 1 , p-tetramethyl xylylene diisocyanate claim 1 , 1 claim 1 ,3-bis(isocyanatemethyl)cyclohexane claim 1 , 1 claim 1 ,4-bis(isocyanatemethyl)cyclohexane claim 1 , bis(isocyanatemethyl)norbornene and 2 claim 1 ,5-diisocyanatemethyl-1 claim 1 ,4-dithiane claim 1 , and the polythiol (d) is at least one compound selected from the group consisting of bis(2-mercaptoethyl)sulfide claim 1 , 2 claim 1 ,5-dimercaptomethyl-1 claim 1 ,4-dithiane claim 1 , 1 claim 1 ,3-bis(mercaptomethyl)benzene claim 1 , 1 claim 1 ,4-bis(mercaptomethyl)benzene claim 1 , 4-mercaptomethyl-1 claim 1 ,8-dimercapto-3 claim 1 ,6-dithiaoctane claim 1 , 4 claim 1 ,8-dimercaptomethyl-1 claim 1 ,11-dimercapto-3 claim 1 ,6 claim 1 ,9- ...

Urethane-based optical component and manufacturing process therefor

The present invention relates to a urethane optical member containing at least one kind of structures represented by the following formulae (1) and (2) in a structure constituting the optical member, and a method for producing the same.

EYEGLASS LENS

The present invention addresses the problem of providing an eyeglass lens that has excellent UV absorption properties and low yellowness. This eyeglass lens is produced using a resin composition that contains m-xylylene diisocyanate, a polythiol compound, and a UV absorber. The UV absorber contains at least a compound represented by formula (1) and a compound represented by formula (2). The M value represented by formula (X) is greater than 1.40 but less than 3.20. 2. The eyeglass lens as claimed in claim 1 , wherein the amount of ultraviolet absorber having a molecular weight of 360 or less is less than 0.7 parts by weight when the total of the m-xylylene diisocyanate and the polythiol compound is 100 parts by weight.3. The eyeglass lens as claimed in claim 1 , wherein the sum of Wand Wis 0.1 parts by weight or more.4. The eyeglass lens as claimed in claim 1 , wherein the molecular weight of a compound represented by formula (1) is 360 or less.5. The eyeglass lens as claimed in wherein the molecular weight of a compound represented by formula (2) is greater than 360. The present invention relates to an eyeglass lens.Patent literature 1 discloses “an ultraviolet-absorbing plastic lens containing an ultraviolet absorber having a molecular weight of 360 or less at a ratio of 0.7-5 parts by weight with respect to 100 parts by weight of raw material monomer”.Patent literature 1: Japanese Laid-Open Patent Application Publication JP H11-271501The present invention, according to the embodiments, provides an eyeglass lens prepared using a resin composition containing m-xylylene diisocyanate, a polythiol compound and an ultraviolet absorber, wherein the ultraviolet absorber contains at least a compound represented by formula (1) and a compound represented by formula (2) and the M value represented by formula (X) is greater than 1.40 but less than 3.20.(In formula (1), R-Reach independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a hydroxyl group. In ...

NON-AQUEOUS CROSSLINKABLE COMPOSITION

The present invention relates to a crosslinkable composition comprising a polyol, a polyisocyanate crosslinker, a catalyst for catalysing the reaction between —OH groups of said polyol and —NCO groups of said crosslinker, a tertiary acid of formula RR′R″CCOOH (I), wherein each R, R′ and R″ group, independently, is an alkyl, alkenyl, aryl or aralkyl group containing at least one carbon atom, with the proviso that two or three of the R, R′ and R″ groups can be linked to form a ring structure and wherein the R, R′ and/or R″ groups can be substituted, and optionally, a complexing agent containing at least one —SH group, as well as its use for making coatings having improved application properties. 1. A crosslinkable composition comprisinga) at least one polyol having free —OH groups,b) at least one polyisocyanate crosslinker having free —NCO groups,c) at least one catalyst for catalysing the reaction between —OH groups of said polyol a) and —NCO groups of said crosslinker b),d) at least one tertiary acid of formula RR′R″CCOOH (I), wherein each R, R′ and R″ group, independently, is an alkyl, alkenyl, aryl or aralkyl group containing at least one carbon atom, with the proviso that two or three of the R, R′ and R″ groups can be linked to form a ring structure and wherein the R, R′ and/or R″ groups can be substituted, and wherein the total number of carbon atoms in the R, R′ and R″ groups is the range of from 3 to 40, ande) optionally, at least one complexing agent containing at least one —SH group.2. The crosslinkable composition according to claim 1 , wherein the complexing agent e) is present and is selected from organic compounds.3. The crosslinking composition according to claim 2 , wherein the complexing agent e) is selected from those of formula R—SH (II) claim 2 , wherein R can be an alkyl claim 2 , alkenyl claim 2 , aryl or aralkyl group claim 2 , optionally substituted with one or more other functional groups such as for example hydroxyl groups claim 2 , primary ...

COMPOSITION, ADHESIVE AGENT, ADHESIVE SHEET, AND LAMINATE

The present invention provides a composition obtained by blending a polythiol compound (A), an isocyanate group-containing compound (B) and a radical generator (C), wherein the polythiol compound (A) is at least one compound selected from an aliphatic polythiol and an aromatic polythiol each of which has a thiol group binding to a primary carbon atom and may contain a hetero atom. The present invention thus provides a composition capable of bonding a rubber member, particularly a vulcanized rubber member, strongly, readily and within a short time, an adhesive and an adhesive sheet using the composition, and a laminate produced by bonding a rubber layer using at least one of these adhesive composition and adhesive sheet. 1. A composition obtained by blending a polythiol compound (A) , an isocyanate group-containing compound (B) and a radical generator (C) , wherein:the polythiol compound (A) is at least one compound selected from an aliphatic polythiol and an aromatic polythiol each of which has a thiol group binding to a primary carbon atom and may contain a hetero atom.2. The composition according to claim 1 , wherein the polythiol compound (A) is an aliphatic polythiol.3. The composition according to claim 2 , wherein the aliphatic polythiol is an acyclic aliphatic compound optionally containing a hetero atom.4. The composition according to claim 2 , wherein the aliphatic polythiol is a compound having an isocyanurate ring structure.5. The composition according to claim 3 , wherein the aliphatic polythiol is at least one compound selected from a (tetrafunctional) compound having four said thiol groups in the molecule and a (hexafunctional) compound having six said thiol groups in the molecule.6. The composition according to claim 4 , wherein the aliphatic polythiol is a (trifunctional) compound having three said thiol groups in the molecule.7. The composition according to claim 1 , wherein the ratio of the total molar number of the isocyanate group contained in ...

ACTINIC RADIATION-CURABLE URETHANE/UREA-CONTAINING AEROSPACE COATINGS AND SEALANTS

Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured. 1. A composition comprisinga polythiol; and a urethane-containing polyalkenyl prepolymer;', 'a urea-containing polyalkenyl prepolymer; or', 'a combination thereof., 'a polyalkenyl, wherein the polyalkenyl comprises'}2. The composition of claim 1 , wherein the polythiol comprises:a urethane-containing polythiol;a urea-containing polythiol;a polythiol that does not contain a urethane group or urea group; ora combination of any of the foregoing.3. The composition of claim 1 , wherein the polythiol comprises a polythiol having a thiol functionality from 3 to 6.4. The composition of claim 1 , wherein the polythiol comprises a hydroxyl-functional polythiol.5. The composition of claim 1 , wherein claim 1 , the polyalkenyl comprises:a difunctional urethane-containing polyalkenyl prepolymer;a difunctional urea-containing polyalkenyl prepolymer; ora combination thereof.6. The composition of claim 1 , wherein the polyalkenyl comprises:a difunctional urethane-containing polyalkenyl prepolymer of Formula (6a);a difunctional urea-containing polyalkenyl prepolymer of Formula (6b); [{'br': None, 'sub': 2', 'n', 'm', '2, 'sup': 2', '5', '6', '5', '2, 'CH═CH—R—O—C(═O)—NH—{—R—NH—C(═O)—O—[—R—O—]—C(═O)—NH—}R—NH—C(═O)—O—R—CH═CH\u2003\u2003(6a)'}, {'br': None, 'sub': 2', 'n', 'm', '2, 'sup': 2', '5', '6', '5', '2, 'CH═CH—R—NH—C(═O)—NH—{—R—NH—C(═O)—O—[—R—O—]—C(═O)—NH—}—R—NH—C(═O)—NH—R—CH═CH\u2003\u2003(6b)'}, m is an integer from 1 to 20;', 'n is an integer from 1 to 20;', {'sup': '2', 'sub': 2-10', '2-10', '2-10', '2-10, 'each Ris independently selected from Calkanediyl, substituted Calkanediyl, Cheteroalkanediyl, and substituted Cheteroalkanediyl;'}, {'sup': '5', 'sub': 2-10', '2-10', '5-12', '5-12', '6-20', '5-20', '6-20', '6-20', '7-20', '7-20', '2-10', '2-10', ' ...

OPTICAL MEMBER RESIN PRODUCTION METHOD

A method for producing an optical component resin including a first pressure-reduction step in which a mixture containing a polyisocyanate component and a polythiol component is disposed under a reduced pressure, a second pressure-reduction step in which a release agent is added after the first pressure-reduction step, and the mixture is further disposed under a reduced pressure, and a polymerization step in which the mixture is polymerized. 1. A method for producing an optical component resin comprisinga first pressure-reduction step in which a mixture containing a polyisocyanate component and a polythiol component is disposed under a reduced pressure,a second pressure-reduction step in which a release agent is added after the first pressure-reduction step, and the mixture is further disposed under a reduced pressure, anda polymerization step in which the mixture is polymerized.2. The method for producing an optical component resin according to claim 1 , wherein the degree of achieved vacuum in the first pressure-reduction step is 1 claim 1 ,000 Pa or less.3. The method for producing an optical component resin according to claim 1 , wherein the degree of achieved vacuum in the second pressure-reduction step is 1 claim 1 ,000 Pa or less.4. The method for producing an optical component resin according to claim 1 , wherein claim 1 , in the first pressure-reduction step claim 1 , the amount of the release agent contained in the mixture is less than 0.01% by mass.5. The method for producing an optical component resin according to claim 1 , wherein claim 1 , in the second pressure-reduction step claim 1 , the release agent is added in an amount of 0.01 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of the total amount of the polyisocyanate component and the polythiol component.6. The method for producing an optical component resin according to claim 1 , wherein the release agent is an acidic phosphate.7. The method for producing an ...

Method for producing 3-mercaptopropionic acid, and methods using same for producing carboxylic acid ester compound having mercapto group and thiourethane-based optical material

A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.

PROCESS FOR PRODUCING PENTAERYTHRITOL MERCAPTOCARBOXYLIC ACID ESTER, POLYMERIZABLE COMPOSITION, RESIN, OPTICAL MATERIAL, AND LENS

A process for producing a pentaerythritol mercaptocarboxylic acid ester of the present invention includes: a step of reacting pentaerythritol with a mercaptocarboxylic acid, in which an absorbance of a 5 wt % aqueous solution of the pentaerythritol at a wavelength of 270 nm, which is measured using a quartz cell having an optical path length of 50 mm, is 0.07 or less. 1. A process for producing a pentaerythritol mercaptocarboxylic acid ester , the method comprising:a step of reacting pentaerythritol with a mercaptocarboxylic acid to obtain a pentaerythritol mercaptocarboxylic acid ester,wherein an absorbance of a 5 wt % aqueous solution of the pentaerythritol at a wavelength of 270 nm, which is measured using a quartz cell having an optical path length of 50 mm, is 0.07 or less.2. The process for producing a pentaerythritol mercaptocarboxylic acid ester according to claim 1 ,wherein the absorbance is 0.003 or more.3. The process for producing a pentaerythritol mercaptocarboxylic acid ester according to claim 1 ,wherein the mercaptocarboxylic acid is a 3-mercaptopropionic acid or a thioglycolic acid.4. A polymerizable composition comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the pentaerythritol mercaptocarboxylic acid ester obtained through the production method according to ; and'}a polyiso(thio)cyanate compound.5. A resin obtained by curing the polymerizable composition according to .6. An optical material composed of the resin according to .7. A lens composed of the resin according to .8. A method for screening pentaerythritol claim 5 , in a process for producing a pentaerythritol mercaptocarboxylic acid ester by reacting pentaerythritol with a mercaptocarboxylic acid claim 5 , comprising:preparing a 5 wt % aqueous solution of the pentaerythritol; andselecting the pentaerythritol that an absorbance of the 5 wt % aqueous solution thereof at a wavelength of 270 nm, which is measured using a quartz cell having an optical path length of 50 mm, is 0.07 ...

Sulfhydryl-functionalized polymeric compositions for medical devices

The present disclosure provides sulfhydryl-modified polymer foams, which may be used for wound dressing materials. For example, the modified materials can include free sulfhydryl group, which can serve as a linker to attach biologically active molecules. For example, sulfhydryl groups can be used to conjugate biologically active polypeptides and/or metals to foam polymers. Methods for using sulfhydryl-modified polymers, such as for wound dressings, are also provided.

RESIN LENS AND METHOD FOR PRODUCING THE SAME

Provided is a method for producing a resin lens, comprising: A) mixing a polyisocyanate, a modified isocyanate, a catalyst and a release agent, and performing vacuum defoaming at 0˜30° C. for 10˜90 min to obtain a material a; B) mixing the material a with a sulfur-containing compound, and performing vacuum defoaming at 15˜20° C. for 20˜120 min to obtain mixed monomers; and C) completing casting of the mixed monomers, and curing to obtain a resin lens. The present disclosure uses polyisocyanate and a modified isocyanate at the same time to prepare a resin lens with higher glass transition temperature and higher surface hardness without producing bank mark and edge fogging. The present disclosure further provides a method for producing modified isocyanate. The obtained modified isocyanate used with polyisocyanate further improves the glass transition temperature and surface hardness of the resin lens without producing bank mark and edge fogging. 1. A method for producing a resin lens , comprising steps of:A) mixing a polyisocyanate, a modified isocyanate, a catalyst and a release agent, and performing vacuum defoaming at 0˜30° C. for 10˜90 min to obtain a material a;B) mixing the material a with a sulfur-containing compound, and performing vacuum defoaming at 15˜20° C. for 20˜120 min to obtain mixed monomers; andC) completing casting of the mixed monomers, and then curing to obtain the resin lens.2. The method according to claim 1 , wherein the polyisocyanate is one or two selected from of the group consisting of xylylene diisocyanate claim 1 , hexamethylene diisocyanate claim 1 , 4 claim 1 ,4′-dicyclohexylmethane diisocyanate claim 1 , toluene diisocyanate claim 1 , 4 claim 1 ,4′-methylene bis (phenylisocyanate) claim 1 , 1 claim 1 ,4-diisocyanatobenzene claim 1 , bis(4-isocyanato)-methadone claim 1 , phosphorus triisocyanate claim 1 , 2-biphenylyl isocyanate claim 1 , 1-naphthyl isocyanate claim 1 , 2-naphthyl isocyanate claim 1 , 4-bromophenyl isocyanate claim 1 , ...

PROCESS FOR PRODUCING POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL

A process for producing a polymerizable composition for an optical material of the present invention includes a step of mixing (A) at least one kind of thiol compound having at least two mercapto groups, (B) a tin compound represented by general formula (1), and (C) at least one kind of isocyanate compound having at least two isocyanato groups, in which the polymerizable composition for an optical material obtained in the above step has a haze value of 0.05 or less. 1. A process for producing a polymerizable composition for an optical material , comprising: {'br': None, 'sup': '4', 'sub': c', '4−c, '(R)—Sn—X\u2003\u2003(1)'}, 'a step of mixing (A) at least one kind of thiol compound having at least two mercapto groups, (B) a tin compound represented by general formula (1), and (C) at least one kind of isocyanate compound having at least two isocyanato groups, to obtain a polymerizable composition for an optical material having a haze value of 0.05 or less,'}{'sup': 4', '5', '5, 'wherein, in general formula (1), Rrepresents an alkyl group having 1 to 8 carbon atoms, X represents a fluorine atom, a chlorine atom, a bromine atom, or —O—C(═O)—R, Rrepresents an alkyl group having 1 to 11 carbon atoms, and c represents an integer of 1 to 3.'}2. A process for producing a polymerizable composition for an optical material , the method comprising:a step of mixing (A) at least one kind of thiol compound having at least two mercapto groups and (B) a tin compound represented by general formula (1); anda step of mixing (C) at least one kind of isocyanate compound having at least two isocyanato groups and the mixed solution obtained in the above step to obtain a polymerizable composition for an optical material, {'br': None, 'sup': '4', 'sub': c', '4−c, '(R)—Sn—X\u2003\u2003(1)'}, 'wherein a haze value of the mixed solution including the component (A) and the component (B) is 0.05 or less,'}{'sup': 4', '5', '5, 'wherein, in general formula (1), Rrepresents an alkyl group having 1 ...

OPTICAL RESIN COMPOSITION AND OPTICAL LENS USING SAME

The present invention provides an optical polymerizable composition, an optical composition, a large-area window, a polyisocyanate composition, and eyeglass lens and producing method thereof. The optical polymerizable composition is composed of a polythiol compound and a polyisocyanate compound, and a urethane-based optical lens obtained by reacting the compounds has a low specific gravity and thus is lightweight, and has excellent heat resistance, and particularly, problems of degradation in impact resistance which appear after hard-multi coating are solved. The lens produced using the composition has various excellent optical characteristics including workability such as formability and dyeability, transparency and the like. 2. The optical polymerizable composition according to claim 1 , wherein the at least one diisocyanate compound used as the component (c) is isophorone diisocyanate claim 1 , dicyclohexylmethane diisocyanate claim 1 , or 2 claim 1 ,5(6)-bis(isocyanatemethyl)-bicyclo[2 claim 1 ,2 claim 1 ,1]heptane.3. The optical polymerizable composition according to claim 1 , wherein the polythiol compound used as the component (d) is a mixture of 2 claim 1 ,3-bis(2-mercaptoethylthio)-propane-1-thiol and pentaerythritol tetrakis(mercaptopropionate).4. The optical polymerizable composition according to claim 3 , wherein 2 claim 3 ,3-bis(2-mercaptoethylthio)-propane-1-thiol and pentaerythritol tetrakis(mercaptopropionate) used as the component (d) are mixed in a ratio: of 90 wt % to 80 wt %:10 wt % to 20 wt %.5. The optical polymerizable composition according to claim 1 , wherein a functional group of the polyisocyanate mixture NCO and a functional group of the polythiol SH are present in a mole ratio NCO/SH of 0.9 to 1.1.6. The optical polymerizable composition according to claim 1 , further comprising:a near-infrared absorbent acting as an electromagnetic wave absorbent and having high near-infrared absorption capabilities corresponding to a transmittance of ...

Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resin

A xylylenediisocyanate composition including xylylenediisocyanate and a compound represented by Chemical Formula (1) below, wherein 0.6 ppm or more and 60 ppm or less of the compound represented by Chemical Formula (1) below is contained: 214-. (canceled)16. A method for producing a plastic lens by copolymerizing the polymerizable composition according to after introducing the polymerizable composition into a mold. The present invention relates to a xylylenediisocyanate composition, a xylylenediisocyanate-modified composition, a two-component resin material, and resin.Conventionally, xylylenediisocyanate has been known as an ingredient of polyurethane resin used for various industrial products.Such xylylenediisocyanate is produced by allowing xylylenediamine to react with carbonyl chloride, and it has been known that chlorinated product is by-produced at the time of reaction (for example, see Patent Document 1).Patent Document 1 discloses xylylenediisocyanate containing 0.1 wt % of chloromethyl benzyl isocyanate as the by-produced chlorinated product.Excellent resistance to discoloration is required for polyurethane resin depending on its purpose and use. However, the polyurethane resin produced from the xylylenediisocyanate described in Patent Document 1 may not secure sufficient resistance to discoloration.The present invention provides a xylylenediisocyanate composition that is capable of stably producing resin with excellent resistance to discoloration, a xylylenediisocyanate-modified composition, and a two-component resin material.The present invention [1] includes a xylylenediisocyanate composition including xylylenediisocyanate and a compound represented by Chemical Formula (1) below, wherein 0.6 ppm or more and 60 ppm or less of the compound represented by formula (1) below is contained.The present invention [2] includes the xylylenediisocyanate composition described in [1] above, further including chloromethyl benzyl isocyanate, wherein the chloromethyl ...

Optical composition for blocking electromagnetic waves and method for manufacturing optical lens therefrom

The present invention relates to an optical composition for blocking near-infrared rays, comprising a mixture of a polyurethane-based thermosetting resin composition and a near-infrared absorbent, wherein the optical composition for blocking near-infrared rays comprises (1) at least one of polyisocyanate compounds in a liquid phase (I); (2) at least one of polyol or polythiol compounds in a liquid phase (II); and (3) a near-infrared absorbent having a high near-infrared absorbing ability of less than 5% in the range of 800-1000 nm, and to a method for manufacturing near-infrared blocking spectacle lens using the same. The spectacle lens obtained from the optical composition of the present invention can effectively prevent damage to the retina by effectively blocking near-infrared rays.

HIGH PERFORMANCE REGULAR AND HIGH EXPANSION ELEMENTS FOR OIL AND GAS APPLICATIONS

Provided is a downhole sealing device, a well system employing a downhole sealing device, and a method for sealing within a wellbore. The downhole sealing device, in one aspect, includes one or more downhole sealing features, and an elastomeric element comprising a thiourethane/acrylate polymer coupled to the one or more downhole sealing features. In at least one aspect, the elastomeric element is operable to be compressed in a downhole application against a tubular as a seal. 1. A downhole sealing device , comprising:one or more downhole sealing features; andan elastomeric element comprising a thiourethane/acrylate polymer coupled to the one or more downhole sealing features, the elastomeric element operable to be compressed in a downhole application against a tubular.2. The downhole sealing device as recited in claim 1 , wherein the thiourethane/acrylate polymer is a thiourethane polymer.3. The downhole sealing device as recited in claim 1 , wherein the thiourethane/acrylate polymer is a thiolacrylate polymer.4. The downhole sealing device as recited in claim 1 , wherein the thiourethane/acrylate polymer is a blended combination of a thiourethane polymer and a thiolacrylate polymer.5. The downhole sealing device as recited in claim 1 , wherein the elastomeric element is operable to be compressed in the downhole application against the tubular and operable to seal at least 6 claim 1 ,900 kPa of pressure differential at a temperature of at least 80° C.6. The downhole sealing device as recited in claim 1 , wherein the elastomeric element is operable to be compressed in the downhole application against the tubular and operable to seal at least 20 claim 1 ,700 kPa of pressure differential at a temperature of at least 80° C.7. The downhole sealing device as recited in claim 1 , wherein the elastomeric element is operable to be compressed in the downhole application against the tubular and operable to seal at least 20 claim 1 ,700 kPa of pressure differential at ...

Method for producing xylylene diisocyanates in the gaseous phase

The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL

An embodiment relates to a polymerizable composition for an optical material and a polythiourethane-based compound prepared therefrom. The polythiourethane-based compound is excellent in appearance with low generation rates of stirae and bubbles. 2. The polymerizable composition of claim 1 , wherein A is a real number of 80 to 120 claim 1 , and B is a real number of 80 to 115.3. The polymerizable composition of claim 1 , wherein D is a real number of 0.08 to 0.25.4. The polymerizable composition of claim 1 , wherein R is a real number of 9.8 to 18.5. The polymerizable composition of claim 1 , wherein E is at least one selected from the group consisting of fluorine (F) claim 1 , chlorine (Cl) claim 1 , bromine (Br) claim 1 , and iodine (I).6. The polymerizable composition of claim 1 , wherein F is an alkyl group having 1 to 10 carbon atoms.7. The polymerizable composition of claim 6 , wherein F is methyl claim 6 , ethyl claim 6 , n-propyl claim 6 , i-propyl claim 6 , n-butyl claim 6 , i-butyl claim 6 , or t-butyl.8. The polymerizable composition of claim 1 , which has a viscosity of 1 claim 1 ,000 cps (centipoise) or more after it stands at 10° C. for 24 hours.9. The polymerizable composition of claim 1 , wherein when the polymerizable composition is made into a specimen having a diameter of 75 mm and a thickness of 10 mm claim 1 , it has a generation rate of bubbles of 0 to 10% and a generation rate of striae of 0 to 8%.10. The polymerizable composition of claim 1 , which comprises 1 to 3 types of a polyisocyanate compound and 1 to 4 types of a polythiol compound.11. A polythiourethane-based compound prepared from the polymerizable composition of .12. An optical material molded from the polythiourethane-based compound of .13. The optical material of claim 12 , which has a refractive index of 1.55 to 1.70 for light at 546 nm and an Abbe number of 25 to 45. An embodiment relates to a polymerizable composition for a polythiourethane-based optical material and a ...

POLYTHIOL COMPOSITION FOR PLASTIC OPTICAL LENS

The embodiments relate to a polythiol composition for a plastic optical lens and a polythiourethane-based plastic optical lens prepared therefrom. In the embodiments, a first polythiol compound having an ester group and a mercapto group only as a hydrogen-bondable functional group and a second polythiol compound having an ester group and a hydrogen-bondable functional group other than a mercapto group are used in an appropriate amount. Thus, it is possible to control the viscosity of a polymerizable composition at the initial stage of polymerization at a low temperature of 5 to 15° C. and to stabilize the rate of increase in the viscosity of the composition and the reaction rate thereof, thereby preventing the generation of striae, bubbles, and the like. Further, various plastic lenses such as eyeglass lenses, camera lenses, and the like having excellent appearance characteristics (without striae and bubbles) and excellent optical characteristics can be obtained from the composition. 1. A polythiol composition , which comprises a first polythiol compound having an ester group and a mercapto group only as a hydrogen-bondable functional group; anda second polythiol compound having an ester group and a hydrogen-bondable functional group other than a mercapto group.2. The polythiol composition of claim 1 , which comprises 2 to 30 parts by weight of the second polythiol compound per 100 parts by weight of the first polythiol compound.3. The polythiol composition of claim 2 , wherein the first polythiol compound has four mercapto groups; andthe second polythiol compound has 3 mercapto groups and 1 hydroxyl group.4. The polythiol composition of claim 1 , wherein the first polythiol compound contains oxygen atoms in an amount of 24 to 34% by mole based on the total molar amount of the first polythiol compound; andthe second polythiol compound contains oxygen atoms in an amount of 25 to 34% by mole based on the total molar amount of the second polythiol compound.5. The ...

METHOD OF MANUFACTURING THIOURETHANE - BASED OPTICAL MATERIAL

Disclosed is a method of preparing a thiourethane based optical material In particular, a method of preparing a high-quality optical material, which is colorless and transparent and is not deformed, at a high yield without generation of striae, whitening, and microbubbles is disclosed. A method of preparing the thiourethane based optical material according to present invention is characterized in that, before cast polymerization, a polymerizable composition including a polythiol compound and a polyisocyanate compound is treated at a specific vacuum condition and then injected into a mold. A thiourethane based optical material prepared according to the present invention may be widely used in a variety of fields as a substitute of conventional optical materials. 1. A method of preparing a thiourethane based optical material , the method comprising cast polymerizing a polymerizable composition comprising a polythiol compound and polyisocyanate compound by injecting the polymerizable composition into a mold after vacuum treating the polymerizable composition at a condition that a value of X in Formula 1 below becomes 0.01 to 2:{'br': None, 'i': X=T×', 't, '1/\u2003\u2003Formula 1'}wherein T is a vacuum degree in torr, t is vacuum-treatment time (min), and T is 0.01 to 20.2. The method according to claim 1 , wherein the polyisocyanate compound is at least one compound selected from the group consisting of isophorone diisocyanate claim 1 , dicyclohexylmethane-4 claim 1 ,4-diisocyanate(HMDI) claim 1 , hexamethylene diisocyanate claim 1 , xylylene diisocyanate claim 1 , and tolylene diisocyanate.3. The method according to claim 1 , wherein the polythiol compound is at least one compound selected from the group consisting of 4-mercaptomethyl-1 claim 1 ,8-dimercapto-3 claim 1 ,6-dithiaoctane claim 1 , 2 claim 1 ,3-bis(2-mercaptoethylthio)-3-propane-1-thiol claim 1 , 2 claim 1 ,2-bis(mercaptomethyl)-1 claim 1 ,3-propanedithiol claim 1 , bis(2-mercaptoethyl)sulfide claim 1 , ...

TWO-COMPONENT POLYURETHANE COMPOSITION WITH ADJUSTABLE POT LIFE

A polyurethane composition including a first and a second component, wherein the first component is a polyol with an OH functionality in the range from 1.5 to 4 and a mean molecular weight in the range from 250 to 15,000 g/mol, a diol with two hydroxyl groups which are linked via a C2 to C0 carbon chain, and a compound that includes at least one thiol group. One of the two components also additionally contains at least one metal catalyst for the reaction of hydroxyl groups and isocyanate groups which can form thio complexes, and the second component contains enough polyisocyanate that at least 5% by weight of isocyanate groups, in relation to the total polyurethane composition, are contained, and the molar ratio of all thiol groups of the mentioned compound to all metal atoms of the metal catalyst is between 1:1 and 250:1. 1. A polyurethane composition consisting of a first and a second component; whereinthe first component A comprises{'sub': 'n', 'at least one polyol A1 having an OH functionality in the range from 1.5 to 4 and a mean molecular weight (number average) Min the range from 250 to 15,000 g/mol, and'}at least one diol A2 having two hydroxyl groups that are linked via a C2 to C9 carbon chain, andat least one compound T that has at least one thiol group; andthe second component B comprisesat least one polyisocyanate I;wherein one of the two components additionally comprises at least one metal catalyst K for the reaction of hydroxyl groups and isocyanate groups that is able to form thio complexes andthe second component contains sufficient polyisocyanate I for it to comprise at least 5% by weight of isocyanate groups based on the overall polyurethane composition, and the molar ratio of all the thiol groups in the at least one compound T to all metal atoms in the at least one metal catalyst K is between 1:1 and 250:1.2. The polyurethane composition as claimed in claim 1 , wherein the metal catalyst K comprises a bismuth(III) compound.3. The polyurethane ...

Thiourethane polymers, method of synthesis thereof and use in fused filament fabrication printing

A thermoplastic thiourethane polymer comprising a sequential chain of a first type of monomer covalently bonded to a second type of monomer via thiourethane linkages. The first type of monomer includes two or more thiol functional groups and the type of monomer includes two or more isocyanate functional groups. The first and second types of monomers are polymerized together in an anhydrous aprotic solvent-dissolved anionic step-growth polymerization reaction that is catalyzed by a non-nucleophillic base having a pKa greater than 7.

POLYTHIOL COMPOSITION FOR PLASTIC LENS

An embodiment relates to a polythiol composition for a plastic lens. The polythiol composition for a plastic lens according to the embodiment can produce a clear and transparent plastic lens by way of polymerizing such raw materials as a polythiol compound, an isocyanate, a photoactive color correcting agent, and the like, followed by a simple post-process such as irradiation of ultraviolet rays. In addition, since the process for preparing the lens is simple and economical, the lens is advantageously used for manufacturing various plastic lenses such as eyeglass lenses and camera lenses. 2. The polythiol composition of claim 1 , wherein the compound represented by Formula 1 is employed in an amount of 55 to 30 claim 1 ,000 ppm based on the composition.3. The polythiol composition of claim 1 , wherein the bi- or higher functional polythiol compound is selected from the group consisting of 1 claim 1 ,2-bis[(2-mercaptoethyl)thio]-3-mercaptopropane claim 1 , 4 claim 1 ,8-dimercaptomethyl- 1 claim 1 ,11-dimercapto-3 claim 1 ,6 claim 1 ,9-trithiaundecane claim 1 , 4 claim 1 ,7-dimercaptomethyl-1 claim 1 ,11-dimercapto-3 claim 1 ,6 claim 1 ,9-trithiaundecane claim 1 , 5 claim 1 ,7-dimercaptomethyl-1 claim 1 ,11-dimercapto-3 claim 1 ,6 claim 1 ,9-trithiaundecane claim 1 , 2 claim 1 ,5-bis(mercaptomethyl)-1 claim 1 ,4-dithiane claim 1 , pentaerythritol tetra(mercaptoacetate) claim 1 , pentaerythritol tetra(3-mercaptopropionate) claim 1 , trimethylolpropane tri(mercaptoacetate) claim 1 , trimethylolpropane tri(3-mercaptopropionate) claim 1 , dipentaerythritol hexa(mercaptoacetate) claim 1 , dipentaerythritol hexa(3-mercaptopropionate) claim 1 , and a mixture thereof.4. The polythiol composition of claim 1 , wherein b* is 2.0 or more claim 1 , when the polythiol composition is represented by the L*a*b* color space.5. The polythiol composition of claim 1 , which satisfies the following Equation 1 claim 1 , when the transmittance at 400 nm in the light spectrum is T(%) and the ...

POLYMERIZABLE COMPOSITION, TRANSPARENT RESIN, OPTICAL MATERIAL, PLASTIC LENS, AND METHOD FOR MANUFACTURING TRANSPARENT RESIN

A polymerizable composition which can suppress generation of turbidity, optical distortion, and striae in a transparent resin obtained therefrom, a transparent resin obtained from the polymerizable composition, an optical material containing the transparent resin, a plastic lens containing the optical material, and a method for manufacturing the transparent resin. The present disclosure is a polymerizable composition containing a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound. The polyiso(thio)cyanate compound contains only a polyiso(thio)cyanate compound having no aromatic ring, and a thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.900 or more and less than 1.000. 1. A polymerizable composition comprising a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound , whereinthe polyiso(thio)cyanate compound contains only a polyiso(thio)cyanate compound having no aromatic ring, anda thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.900 or more and less than 1.000.2. The polymerizable composition according to claim 1 , wherein the thiol equivalent ratio which is a measured value of the thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.920 or more and less than 1.000.3. The polymerizable composition according to claim 2 , wherein the thiol equivalent ratio which is a measured value of the thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.940 or more and less than 1.000.4. The polymerizable composition according to claim 1 , wherein the polythiol compound having at least three mercapto groups is an ester compound of a polyol compound and at least one ...

POLYMERIZABLE COMPOSITION FOR PLASTIC LENS AND METHOD OF PREPARING PLASTIC LENS USING SAME

An embodiment relates to a polymerizable composition for a plastic lens. The polymerizable composition for a plastic lens according to the embodiment comprises a nonhalogenated tin-based catalyst and a diketone compound as a low-temperature reaction rate controlling agent. Accordingly, the polymerizable composition has a more stable pot life so that the polymerization rate can be appropriately controlled, thereby improving the reactivity and the workability, and that the generation of bubbles are prevented, thereby improving the transparency of the resin. 1. A polymerizable composition for a plastic lens , which comprises:a bi- or higher functional isocyanate compound;a bi- or higher functional thiol compound having at least one sulfide bond or at least one ester bond;a catalyst; anda diketone-based low-temperature reaction rate controlling agent.2. The polymerizable composition for a plastic lens of claim 1 , which satisfies the following Equation 1 claim 1 , when the changes in viscosity (Y) are measured with respect to time (X) at 10° C.:{'br': None, 'b': '1', 'Δ ln Y=b×ΔX \u2003\u2003 [Equation 1]'}{'sub': x', '0', '0', 'x, 'sup': −1', '−1, 'wherein Δ ln Y is ln Y−ln Y, Yis the initial (x=0) viscosity (cps) of the polymerizable composition at a temperature of 10° C., Yis the viscosity (cps) of the polymerizable composition at a temperature of 10° C. after X hour(s) elapse, ΔX is from 0.01 hour to 30 hours, and b is from 0.1 hourto 0.5 hour.'}3. The polymerizable composition for a plastic lens of claim 1 , wherein the catalyst comprises a nonhalogenated tin-based catalyst claim 1 , which does not comprise a halogen; andthe nonhalogenated tin-based catalyst is employed in an amount of 5 ppm to 1,000 ppm based on the total weight of the isocyanate compound and the thiol compound.4. The polymerizable composition for a plastic lens of claim 3 , wherein the diketone-based low-temperature reaction rate controlling agent is employed in an amount of 5 to 90% by weight ...

Method for producing resin for optical component, resin for optical component, spectacle lens, and spectacles

An embodiment of the present disclosure relates to a method for producing an optical component resin having excellent dyeability, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including a step of polymerizing a polymerizable composition containing a polyisocyanate component and a polythiol component containing 40 mol % or more of a polythiol compound having two or more sulfide bonds in a molecular structure thereof, in which the content of a hydrolyzable chlorine compound contained in the polyisocyanate component is in a range of 10 ppm by mass or more and 100 ppm by mass or less in the polyisocyanate component, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.

Optical Articles and Methods for Preparation of Same

Provided is a transparent, non-elastomeric optical article prepared by (1) combining to form a reaction mixture (a) a polyisocyanate component; and (b) an active hydrogen component including (b1) a first component free of amino groups including at least one first polyol; and (b2) a second component containing (i) a second polyol and/or a polythiol and (ii) a compound containing both amine and hydroxyl functional groups; (2) introducing the reaction mixture to a mold at a temperature and for a time sufficient to form a thermoset polymerizate; and (3) releasing the polymerizate from the mold to yield a transparent, non-elastomeric optical article. Also provided is a method for preparing a transparent optical film. Optical films and articles prepared by the methods also are provided.

Method producing resin for optical component, resin for optical component, spectacle lens, and spectacles

A method for producing an optical component resin, including: a step of mixing a polythiol component, a polyisocyanate component, and an additive to obtain a polymerizable composition; and a step of polymerizing the polymerizable composition, in which the total moisture content of the additive before mixing is 1.0 ppm by mass or more and 10 ppm by mass or less with respect to the amount of the polyisocyanate component, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.

Method for producing resin for optical component, resin for optical component, spectacle lens, and spectacles

A method for producing an optical component resin, suppressing yellowing due to addition of an ultraviolet absorber, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including a step of polymerizing a polymerizable composition containing a polythiol component, a polyisocyanate component, and an ultraviolet absorber, in which the ultraviolet absorber has a Hazen color number (APHA) of 40 or less in a toluene solution thereof having a concentration of 10% by mass, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.

COMPOSITION FOR USE AS OPTICAL MATERIAL

The purpose of the present invention is to appropriately control the rate of polymerization of a composition in which a thiol compound and an isocyanate compound are added to an episulfide compound and thereby provide an optical material which has high transparency. This composition for use as optical material comprises (a) an episulfide compound, (b) an isocyanate compound, (c) a thiol compound, and (d) a benzyl halide compound represented by formula (1): 2. The composition for optical materials according to claim 1 , which further comprises a sulfur compound (e).3. The composition for optical materials according to claim 1 , wherein the ratio of the benzyl halide compound (d) in the composition for optical materials is 0.0001 to 5% by mass.4. The composition for optical materials according to claim 1 , wherein the benzyl halide compound (d) is a benzyl chloride compound.5. The composition for optical materials according to claim 1 , wherein the ratio of the episulfide compound (a) in the composition for optical materials is 50 to 90% by mass claim 1 , and wherein the ratio of the sum of the thiol compound (b) and the isocyanate compound (c) in the composition for optical materials is 50 to 10% by mass.6. A cured product obtained by polymerizing and curing the composition for optical materials according to .7. A method for producing an optical material claim 1 , which includes polymerizing and curing the composition for optical materials according to . The present invention relates to a composition for optical materials which is used for an optical material such as a plastic lens, a prism, an optical fiber, an information recording substrate, a filter and the like.Examples of techniques for simultaneously realizing a high refractive index, a high Abbe number and high heat resistance of an optical material include use of an episulfide compound. However, optical materials made of the compound have a problem of obtaining high strength. For this reason, researches have ...

POLYMERIZABLE COMPOSITION, OPTICAL ARTICLE OBTAINED THEREFROM AND METHOD FOR THE PRODUCTION OF SAID OPTICAL ARTICLE

The present invention relates to a polymerizable composition comprising polyisocyanate(s) (A), polythiol(s) (B), thiol(s) (C) and catalyst(s) (D). The polyisocyanate(s) (A) is at least one bifunctional or higher functional alicyclic polyisocyanate; the polythiol(s) (B) is at least one compound selected from polythiols represented by the following general formula (B1); the thiol(s) (C) is at least one compound selected from thiols having general formula (3); and the catalyst(s) (D) is at least one polymerization catalyst selected from metal compounds, quaternary ammonium salts, organic sulfonic acids, tertiary amines and relative inorganic or organic salts. 3. The polymerizable composition according to claim 1 , wherein the polyisocyanate(s) (A) is selected from 1 claim 1 ,3-bis(isocyanatemethyl)cyclohexane claim 1 , 1 claim 1 ,4-bis(iso-cyanatemethyl)cyclohexane claim 1 , bis(4-isocyanatecyclo-hexyl)methane claim 1 , and bis(isocyanatemethyl)-bicyclo-[2.2.1]heptane.4. The polymerizable composition according to claim 1 , wherein the polyisocyanate(s) (A) is a combination of at least two compounds selected from bis(4-isocyanatecyclohexyl)methane claim 1 , bis(isocyanate-methyl)-bicyclo[2.2.1]heptane claim 1 , 1 claim 1 ,3-bis(isocyanatemethyl)-cyclohexane claim 1 , and 1 claim 1 ,4-bis(isocyanatemethyl)cyclohexane.5. The polymerizable composition according to claim 1 , wherein in polythiols (B1) claim 1 , I and m claim 1 , the same or different claim 1 , represent an integer ranging from 1 to 2 and n is 1.6. The polymerizable composition according to claim 1 , further comprising a polyisocyanate (E) selected from a non-cyclic aliphatic polyisocyanate claim 1 , an aromatic polyisocyanate claim 1 , an aliphatic polyisocyanate containing sulfur atoms claim 1 , an aromatic polyisocyanate containing sulfur atom.7. The polymerizable composition according to claim 6 , wherein the polyisocyanate (E) is selected from m-xylene diisocyanate claim 6 , 2 claim 6 ,4-tolylene ...