Polyolefin-Zusammensetzung für die Herstellung von biomedizinischen Artikeln

Elastomere Copolymere von Ethylen und Alpha-Olefinen und Verfahren zu ihrer Herstellung

Geträgerte Katalysatoren für die Polymerisation von Olefinen

Katalysator zur Olefinpolymerisation

Verbrückte Bis-fluorenylmetallocene, Verfahren zu deren Herstellung, und deren Verwendung in Katalysatoren zur Polymerisation von Olefinen

METALLOCENVERBINDUNGEN, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG IN KATALYSATOREN FÜR DIE OLEFINPOLYMERISIERUNG

1-BUTEN-PROPYLEN-COPOLYMER-ZUSAMMENSETZUNGEN

METALLOCENVERBINDUNGEN

HETERO-CYCLIC METALLOCENE AND YOUR USE IN CATALYST SYSTEMS FOR THE PRODUCTION OF OLEFIN POLYMERS

PROCEDURE FOR THE COPOLYMERISATION OF ETHYLS

PROCEDURE FOR THE PRODUCTION OF AMORPHOUS ALPHAOLEFINPOLYMEREN, THESE CONTAINING COMPOSITIONS AND PROCEDURES FOR THE PRODUCTION OF VERB-MOVED LIGANDS

POLYOLEFIN COMPOSITION FOR THE PRODUCTION OF BIOMEDICAL ARTICLES

VERB-MOVED METALLOCENE, PRODUCTION AND USE AS OLEFINPOLYMERISATIONSKATALYSATOR

CATALYST TO OLEFINPOLYMERISATION

ORGANOMETALLI CONNECTION THE WHEN COKATALYSATOR WITH THE POLYMERIZATION OF OLEFINEN USABLE IS

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

PROCESS FOR PRODUCING CRYSTALLINE VINYL AROMATIC POLYMERS HAVING MAINLY A SYNDIOTACTIC STRUCTURE

Elastomeric copolymers of ethylene with propylene and process for their preparation

ALPHA-OLEFIN POLYMERS WITH SYNDIOTACTIC STRUCTURE

ATACTIC POLYPROPYLENE

Amorphous propylene polymers are disclosed having the following characteristics: (a) intrinsic viscosity ¢?! > 1 dl/g; (b) %(r) - %(m) > 0, wherein %(r) is the % of syndiotactic diads and %(m) is the % of isotactic diads; (c) less than 2% of the CH2 groups contained in sequences (CH2)n, with n ? 2; (d) Bernoullianity index (B) = 1 ? 0.2. These propylene polymers, which are in addition endowed with a narrow molecular weight distribution, can be obtained directly from the polymerization reaction of propylene as sole product and, therefore, do not require to be separated.

ELASTOMERIC COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS AND PROCESS FOR THEIR PREPARATION

Amorphous copolymers of ethylene with .alpha.-olefins and optionally minor amounts of polyenes are disclosed, having the following characteristics: (A) the % by mole content of .alpha.-olefin in the copolymer (%.alpha.) and the ratio between the molar amount of .alpha.-olefin diads and the molar content of .alpha.-olefin in the copolymer (.alpha..alpha./.alpha.) satisfy the following relationship: (%.alpha.) - 250 (.alpha..alpha./.alpha.) ? 10 (B) less than 2% of the CH2 groups in the polymeric chain are in sequences (CH2)n, wherein n is an even number. These copolymers are obtainable by operating in the presence of particular metallocene-based catalysts having two fluorenyl groups joined together through a bridging group.

COPOLYMERS OF ETHYLENE WITH OLEFINIC MONOMERS, PROCESS FOR THE PREPARATION THEREOF AND CATALYST

Copolymers of ethylene with comonomers selected from (a) alpha-olefins, (b) cycloolefins and/or (c) dienes, characterized by the fact that: the molar percentage of the comonomer (% .alpha.) and the density of the copolymer (D) satisfy the relation % .alpha. + 150D .ltoreq. 141.

REACTOR BLEND POLYPROPYLENE, PROCESS FOR THE PREPARATION THEREOF AND PROCESS FOR PREPARING METALLOCENE LIGANDS

Fractionable, reactor blend polypropylenes, directly obtainable from the polymerization reaction of propylene, having: (a) content of isotactic pentads (mmmm) comprised between 25 and 85 %; (b) ratio Mw/Mn < 5; containing from 10 to 70 % by weight of a fraction soluble in boiling diethyl ether, said fraction having a content of isotactic pentads (mmmm) comprised between 5 and 25 %, and from 30 to 90 % by weight of a boiling n-heptane-insoluble fraction, soluble in xylene at 135 ~C, said fraction having a content of isotactic pentads (mmmm) comprised between 50 and 99 %, are disclosed. These polymers are suitable as thermoplastic-elastomeric materials. A process for the preparation of these polymers and a process for the preparation of 2-aryl-substituted indenyl metallocene ligands is also disclosed.

Copolymers of ethylene with olefinic monomers, process for the preparation thereof and catalyst

Verfahren zur Herstellung verbrückter Metallocene

Elastomere Copolymere von Ethylen und Alpha-Olefinen und Verfahren zu ihrer Herstellung

ELASTOMERS ETHYL PROPYLENE OF COPOLYMERS AND PROCEDURES FOR YOUR PRODUCTION

PROCEDURE FOR THE PRODUCTION OF ETHYLEN POLYMERS

CATALYST SYSTEM FOR POLYMERIZING OF OLEFINEN

PROCEDURE FOR THE POLYMERIZATION OF BUTEN-1

COMPOSITIONS FROM POLYMERS ON 1-BUTEN-BASIS

PROCEDURE FOR the POLYMERIZATION OF 1-HEXEN OR HIGHER ALPHA OLEFINEN

HETERO-CYCLIC METALLOCENE AND YOUR USE IN CATALYST SYSTEMS FOR THE PRODUCTION OF OLEFIN POLYMERS

ETHYL OLEFIN KOPOLYMERE, PROCEDURES FOR THE PRODUCTION THE SAME WITH CATALYST

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

Supported catalysts for the polymerization of olefins

Copolymers of ethylene with olefinic monomers, process for the preparation thereof and catalyst

Thermoplastic compositions of isotactic propylene polymers and flexible propylene polymers having reduced isotacticity and a process for the preparation thereof

PROCESS FOR PREPARING PROPYLENE COPOLYMER COMPOSITIONS

The present invention relates to an olefin polymerization process for producing propylene copolymer composition (P), wherein propylene, C4 to C10 a-olefin and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst in a multistage polymerization process comprising at least two polymerization reactors, wherein the copolymer composition is bimodal with respect to the content of C4 to C10 a-olefin and, if present, to ethylene. Further, the invention is directed to the propylene copolymer composition being bimodal with respect to the content of C4 to C10 a-olefin and optionally to ethylene, and use of said propylene copolymer compositions for producing articles.

PROCESS FOR THE PREPARATION OF ETHYLENE POLYMERS AND PRODUCTS OBTAINED THEREFROM

Homo- and copolymers of ethylene having very high molecular weights and narrow molecular weight distributions are obtained by carrying out the polymerization reaction in the presence of a metallocene-based catalyst wherein the metallocene is stereorigid and it is in its meso isomeric form.

ELASTOMERIC COPOLYMERS OF ETHYLENE WITH PROPYLENE AND PROCESS FOR THEIR PREPARATION

Amorphous copolymers of ethylene with propylene, and optionally with minor amounts of polyenes, have the following characteristics: (A) the % content by mole of propylene in the copolymer (%P) and the triads ratio EPE/(EPE+PPE+PPP) satisfy the following relationship: 0.01%P + EPE/(EPE+PPE+PPP) ? 1 (B) less than 2% of the CH2 groups in the chain are in sequences (CH2)n, wherein n is an even number. These copolymers are obtainable by operating in the presence of particular metallocene catalysts having two fluorenyl groups joined together through a bridging group.

PROCESS FOR THE PREPARATION OF 1,5-HEXADIENE CYCLOPOLYMERS AND PRODUCTS THUS OBTAINED

... "PROCESS FOR THE PREPARATION OF 1,5-HEXADIENE CYCLOPOLYMERS AND PRODUCTS THUS OBTAINED" Highly crystalline high melting 1,5-hexadiene cyclopolymers are prepared by carrying out the polymerization in the presence of a catalyst comprising a specific Zr or Hf metallocene compound and specific alumoxane compounds.

PROCESS FOR THE PREPARATION OF COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS

Ethylene based copolymers having high molecular weights, narrow molecular weight distributions, and a very good homogeneous distribution of the comonomer units can be obtained in high yields at temperatures of industrial interest, by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3-position on the indenyl groups.

PROCESS FOR THE PREPARATION OF SUBSTANTIALLY AMORPHOUS ALPHA-OLEFIN POLYMERS AND COMPOSITIONS CONTAINING THEM AND PROCESS FOR THE PREPARATION OF BRIDGED LIGAND

Amorphous polymers of alpha-olefins, particularly of propylene, having high molecular weights and narrow molecular weight distributions, in which the isotactic sequences are more abundant than the syndiotactic ones, can be obtained in high yields at temperatures of industrial interest by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3position on the indenyl groups. The obtained amorphous polymers are particularly useful for the preparation of miscible compositions with substantially isotactic alpha-olefins.

HETEROPHASIC COPOLYMER

A heterophasic propylene ethylene copolymer having an MFRof 0.5 to 100 g/10 min and obtained using single site catalysis comprising: (i) at least 40 wt % of a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % comonomer; (ii) at least 10 wt % of an ethylene propylene rubber dispersed in the matrix, said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 12 to 60%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 18 and 70 wt. %; and wherein the intrinsic viscosity of the XS fraction of said heterophasic propylene ethylene copolymer is greater than the intrinsic viscosity of the matrix fraction of said copolymer. 1. A heterophasic propylene ethylene copolymer having an MFRof 0.5 to 100 g/10 min and obtained using single site catalysis comprising:(i) at least 40 wt % of a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt% ethylene; and(ii) at least 10 wt % of an ethylene propylene rubber (EPR) dispersed in the matrix;said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 12 to 60%;wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 18 and 70 wt. %; andwherein the intrinsic viscosity of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is greater than the intrinsic viscosity of the xylene cold insoluble fraction of said copolymer.2. A heterophasic propylene ethylene copolymer having an MFRof 0.5 to 100 g/10 min and obtained using single site catalysis comprising:(i) at least 40 wt % of a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % ethylene comonomer;(ii) at least 10 wt % of an ethylene propylene rubber dispersed in the matrix,said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 12 to ...

KATALYSATORSYSTEM FÜR DIE POLYMERISIERUNG VON OLEFINEN

VERBRÜCKTE METALLOCENVERBINDUNGEN, VERFAHREN ZU DEREN HERSTELLUNG UND DEREN VERWENDUNG ALS OLEFINPOLYMERISATIONSKATALYSATOR

METALLOCENE UND KATALYSATOREN ZUR POLYMERISATION VON OLEFINEN

Verfahren zur Herstellung verbrückter Metallocene

OLYMEREN

METALLOCENE, USE IN CATALYSTS FOR OLEFINPOLYMERISATION

PROCEDURE FOR THE PRODUCTION OF MONO OR TO HALOGEN-SUBSTITUTED METALLOZENVERBINDUNGEN

PROCEDURE FOR THE PRODUCTION VON1-BUTEN-POLYMEREN

GETRÄGERTE CATALYSTS FOR THE POLYMERIZATION OF OLEFINEN

ATAKTI POLYPROPYLENE

PROCEDURE FOR THE PRODUCTION ETHYL NICHES OF A COPOLYMER

ETHYLS OF COPOLYMERS

PROCEDURE FOR THE PRODUCTION OF ESSENTIALLY AMORPHOUS ONE POLYMERS ON PROPYLENE BASIS

1-BUTEN-COPOLYMERE AND MANUFACTURING PROCESS FOR it

PROCEDURE FOR THE POLYMERIZATION OF BUTEN-1

1-BUTEN-POLYMER AND MANUFACTURING PROCESS FOR it

LIGAND FOR A METALLOCENKATALYSATOR FOR THE POLYMERIZATION OF PROPYLENE AND ITS MANUFACTURING PROCESSES

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

METALLOCENVERBINDUNGEN

Metallocenes and catalysts for polymerization of olefins

PROCESS FOR PRODUCING CRYSTALLINE VINYL AROMATIC POLYMERS HAVING MAINLY A SYNDIOTACTIC STRUCTURE

Process for the copolymerization of propylene

COPOLYMERS OF ETHYLENE WITH OLEFINIC MONOMERS, PROCESS FOR THE PREPARATION THEREOF AND CATALYST

Copolymers of ethylene with comonomers selected from (a) alpha-olefins, (b) cycloolefins and/or (c) dienes, characterized by the fact that: the molar percentage of the comonomer (% .alpha.) and the density of the copolymer (D) satisfy the relation % .alpha. + 150D ? 141.

PROCESS FOR PREPARING AN ETHYLENIC COPOLYMER

A process for the preparation of an ethylene/1-butene or ethylene/1-butene/diene elastomer by slurry polymerization of the monomers in a polymerization medium consisting mainly of an excess of the 1-butene maintained in liquid form, performed in the presence of a catalyst based on a metallocene compound of Ti, Zr or Hf. This process is exempt from occurrence of reactor fouling and enables the recovery of the polymer without the use of steam as a stripping agent.

ALPHA-OLEFIN POLYMERS WITH SYNDIOTACTIC STRUCTURE

ALPHA-OLEFIN POLYMERS WITH SYNDIOTACTIC STRUCTURE Syndiotactic polymers of alpha-olefins selected from the group consisting of 1-butene, 4-methyl-1-pentene and 4methyl-1-hexene and a method of preparation thereof by polymerizing said olefins with catalysts obtained from specific Zr or Hf cyclopentadienyl compounds and aluminoxane compounds. (HM 3893 EST) -1- ...

ETHYLENE COPOLYMERS, PROCESS FOR THE PREPARATION OF ETHYLENE-BASED POLYMERS AND CATALYST SYSTEM USED THEREIN

Ethylene copolymers are prepared with comonomers selected from (a) .alpha.olefins, (b) cycloolefins and (c) polyenes, with a content of ethylene units of between 80 and 99 mol %, a content of units derived from .alpha.-olefin, cycloolefin and/or polyene comonomers of between 1 and 20 mol %, characterized in that: (a) in TREF (Temperature Rising Elution Fractionation) analysis, a quantity equal to at least 90 % by weight of the copolymer is eluted within a temperature interval of less than 50 ~C, and (b) Mw/Mn > 3, where Mw is the weight-average molecular weight and Mn is the number-average molecular weight, both determined by means of GPC.

PROCESS FOR THE PREPARATION OF ATACTIC 1-BUTENE POLYMERS

A process for obtaining atactic 1-butene polymer optionally containing at least one comonomer selected from ethylene, propylene or an alpha-olefin of formula CH2=CHR, wherein R is a linear or branched C3-C alkyl group, comprising the step of polymerizing 1-butene and optionally ethylene, propylene or said alpha- olefin, in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound of formula (I) in its meso or meso-like form wherein M is an atom of a transition metal; p is an integer from 0 to 3; X, same or different, is a hydrogen atom, a halogen atom, or a hydrocarbon group; L is a divalent C-Chydrocarbon radical optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; R' and R, are C-C hydrocarbon radicals; T, equal to or different from each other, is a moiety of formula (IIa) or (Ilb) wherein R is a C-Chydrocarbon radical; R and R, are hydrogen atoms or C-C hydrocarbon radicals; R is a C-Chydrocarbon radical ...

Verfahren zur Herstellung von Äthylenpolymeren

HERSTELLUNG VON ÜBERGANGSMETALL-ALKYLKOMPLEXEN MIT EINER BIDENTATEN, DIANIONISCHEN LIGANDE

ORGANOMETALLISCHE VERBINDUNG DIE ALS COKATALYSATOR BEI DER POLYMERISATION VON OLEFINEN VERWENDBAR IST

VERBRÜCKTE METALLOCENVERBINDUNGEN, VERFAHREN ZU DEREN HERSTELLUNG UND DEREN VERWENDUNG ALS OLEFINPOLYMERISATIONSKATALYSATOR

CATALYSTS

A solid particulate catalyst free from an external carrier comprising: 2. A catalyst as claimed in obtainable by a process in which(I) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(II) solid particles are formed by solidifying said dispersed droplets.3. A catalyst as claimed in claim 1 , wherein the two multicyclic ligands making up the complex of formula (I) are identical.4. A catalyst as claimed in claim 1 , wherein each X is independently a hydrogen atom claim 1 , a halogen atom claim 1 , C-alkoxy group or an R group claim 1 , wherein R is a C-alkyl claim 1 , phenyl or benzyl group.5. A catalyst as claimed in claim 1 , wherein L is —SiR— claim 1 , wherein each Ris independently C1-C20-alkyl claim 1 , C6-C20-aryl or tri(C1-C20-alkyl)silyl-residue or ethylene bridge claim 1 , especially dimethyl.6. A catalyst as claimed in claim 1 , wherein Ris a linear or branched C-alkyl radical.7. A catalyst as claimed in claim 1 , wherein Rand R claim 1 , taken together form a non aromatic 4-7 membered ring or a phenyl ring.8. A catalyst as claimed in claim 1 , wherein Ris linear or branched claim 1 , C-alkyl radical.9. A catalyst as claimed in claim 1 , wherein Ris a hydrogen atom or methyl claim 1 , ethyl claim 1 , propyl or isopropyl group.10. A catalyst as claimed in claim 1 , wherein W is an optionally substituted phenyl group claim 1 , or a 5 or 6 membered heteroaryl group selected from furanyl claim 1 , thiophenyl claim 1 , pyrrolyl claim 1 , triazolyl claim 1 , and pyridinyl.11. A catalyst as claimed in claim 1 , any wherein Ris a linear or branched claim 1 , cyclic or acyclic claim 1 , C1-C10-alkyl group or two adjacent Rgroups taken together can form a further mono or multicyclic aromatic ring condensed to W.14. A process for the manufacture of a catalyst as claimed in claim 1 , comprising obtaining a complex of ...

SOLID PARTICULATE CATALYSTS COMPRISING BRIDGED METALLOCENES

Solid, particulate catalysts comprising bridged his indenyl n-ligands are disclosed, together with methods for the preparation and use thereat for example, in olefin polymerization. 115-. (canceled)17. The solid claim 16 , particulate catalyst of claim 16 , being free of an external carrier.18. The solid claim 17 , particulate catalyst of claim 17 , obtained by a process in which(I) a liquid/liquid emulsion system is formed, wherein the liquid/liquid emulsion system comprises a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets therewith; and(II) solid particles are formed by solidifying the dispersed droplets.19. The solid claim 16 , particulate catalyst of claim 16 , wherein the two multicyclic ligands making up the complex of formula (I) are identical.20. The solid claim 16 , particulate catalyst of claim 16 , wherein each X is independently a hydrogen atom claim 16 , a halogen atom claim 16 , a C-alkoxy group claim 16 , or an R group claim 16 , wherein R is a C-alkyl claim 16 , phenyl claim 16 , or benzyl group.21. The solid claim 16 , particulate catalyst of claim 16 , wherein L is —SiR— claim 16 , wherein each Ris independently C1-C20-alkyl claim 16 , C6-C20-aryl claim 16 , or tri(C1-C20-alkyl)silyl-residue.22. The solid claim 16 , particulate catalyst of claim 16 , wherein L is a dimethylsilyl or ethylene bridge.23. The solid claim 16 , particulate catalyst of claim 16 , wherein Ris a linear or branched C-alkyl radical.24. The solid claim 16 , particulate catalyst of claim 16 , wherein Ris a linear C1-6 alkyl radical.25. The solid claim 16 , particulate catalyst of claim 16 , wherein Wand/or Wis an optionally substituted phenyl group claim 16 , or a 5 or 6 membered heteroaryl group selected from the group consisting of furanyl claim 16 , thiophenyl claim 16 , pyrrolyl claim 16 , triazolyl claim 16 , and pyridinyl.26. The solid particulate catalyst of claim 16 , wherein Ris a linear or branched claim 16 , ...

SOLID PARTICULATE CATALYSTS COMPRISING BRIDGED METALLOCENES

A polypropylene homopolymer with a melting point of less than 147° C., a percentage of 2.1 errors of at least 1% and a xylene soluble fraction of less than 0.5 wt %. 1. A polypropylene homopolymer having a melting point of less than 147° C. , a percentage of 2.1 errors of at least 1% and a xylene soluble fraction of less than 0.5 wt %.2. The polypropylene homopolymer of claim 1 , having a melting point of less than 145° C. claim 1 , a percentage of 2.1 errors of at least 1.5% and a xylene soluble fraction of less than 0.5 wt %.3. The polypropylene homopolymer of claim 1 , having a tensile modulus of less than 1680 MPa claim 1 , an rr triad content of less than 0.2%; and a Mw/Mn of more than 4.4. The polypropylene homopolymer of claim 1 , having a tensile modulus of less than 1900 MPa; an rr triad content of less than 0.2%; and a Mw/Mn of more than 3.4.5. The polypropylene homopolymer of claim 3 , having a percentage of 2.1 errors of at least 1.4%.6. A nucleated polypropylene homopolymer having a melting point of less than 150° C.; a xylene soluble fraction of less than 1 wt %; and a percentage of 2.1 errors of at least 1%.7. The nucleated polypropylene homopolymer of claim 6 , having a tensile modulus of at least 1650 MPa; a Tc of at least 115° C.; and a rr triad content of less than 0.2%.9. The polypropylene homopolymer of claim 8 , wherein the solid claim 8 , particulate catalyst is free of an external carrier and comprises (i) a complex of formula (I) and (ii) a cocatalyst.10. The polypropylene homopolymer of claim 8 , wherein the solid claim 8 , particulate catalyst is free of an external carrier and is obtained by a process in which(I) a liquid/liquid emulsion system is formed, the liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets therewith; and(II) solid particles are formed by solidifying said dispersed droplets.12. The polypropylene homopolymer of claim 1 , ...

Process for olefin polymerisation using group 4 metallocene as catalysts

A process for the preparation of a random propylene copolymer comprising polymerising propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (i) a complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′ 2 C—, —R′ 2 C—CR′ 2 —, —R′ 2 Si—, —R′ 2 Si—SiR 2 —, —R′ 2 Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each R 1 is a C4-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring where the β-atom is an Si-atom; n is 0-3; each R 18 is the same or different and may be a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each R 4 is a hydrogen atom or a C1-6-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an R 5 group; each R 5 is the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent R 5 groups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R 5 ; and (ii) a cocatalyst comprising an organometallic compound of a Group 13 metal.

CATALYSTS

A complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′C—, —R′C—CR′—, —R′Si—, —R′Si—SiR′—, —R′Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each Ris a C4-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring where the β-atom is an Si-atom; n is 0-3; each Ris the same or different and may be a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each Ris a hydrogen atom or a C-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an Rgroup each Ris the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent Rgroups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R. 2. A catalyst comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(i) a complex of formula (I) as defined in ; and'}(ii) a cocatalyst comprising an organometallic compound of a Group 13 metal.3. A catalyst as claimed in prepared by a process comprising(I) forming a liquid/liquid emulsion system, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(II) solidifying said dispersed droplets to form solid particles.4. A catalyst as claimed in further comprising an inert carrier.5. A complex of claim 1 , wherein L is —SiR— claim 1 , wherein each Ris independently C1-C20-alkyl claim 1 , C6-C20-aryl or tri(C1-C20-alkyl)silyl-residue or ethylene bridge.6. A ...

SEALING PROPYLENE COPOLYMER

Propylene copolymer composition comprising a propylene copolymer (A) having a comonomer content in the range of equal or more than 0.5 to equal or below 2.0 wt.-%, the comonomers are C5 to C12 α-olefins, and a propylene copolymer (B) having a comonomer content in the range of equal or more than 4.0 to equal or below 10.0 wt.-%, the comonomers are C5 to C12 α-olefins, wherein further the propylene copolymer composition has a comonomer content in the range of equal or more than 3.5 to equal or below 7.0 wt.-%, the comonomers are C5 to C12 α-olefins, and the weight ratio of the propylene copolymer (A) to the propylene copolymer (B) is in the range of 20/80 to below 55/45. 1. Propylene copolymer composition (P) comprising:{'sub': 5', '12, '(a) a propylene copolymer (A) having a comonomer content in the range of equal or more than 0.5 to equal or below 2.0 wt. %, the comonomers are Cto Cα-olefins, and'}{'sub': 5', '12, '(b) a propylene copolymer (B) having a comonomer content in the range of equal or more than 4.0 to equal or below 10.0 wt. %, the comonomers are Cto Cα-olefins,'} [{'sub': 5', '12, '(i) the propylene copolymer composition (P) has a comonomer content in the range of equal or more than 3.5 to equal or below 7.0 wt. %, the comonomers are Cto Cα-olefins, and'}, '(ii) the weight ratio of the propylene copolymer (A) to the propylene copolymer (B) is in the range of 20/80 to below 55/45., 'wherein further'}2. Propylene copolymer composition (P) according to claim 1 , wherein the propylene copolymer composition (P) fulfills the equation (I){'br': None, 'i': 'Tm', '−SIT≧25° C.\u2003\u2003(I)'} Tm is the melting temperature given in centigrade [° C.] of the propylene copolymer (P)', 'SIT is the heat sealing initiation temperature (SIT) given in centigrade [° C.] of the propylene copolymer (P)., 'wherein'}3. Propylene copolymer composition (P) according to claim 1 , wherein the propylene copolymer composition (P) has a heat sealing initiation temperature (SIT) of ...

BRIDGED METALLOCENE CATALYSTS

A solid, particulate catalyst comprising: (i) a complex of formula (I) wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —RC—, —R′C—CR′—, —R′Si—, —R′Si—SiR′—, —R′Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each Ris a C4-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring where the β-atom is an Si-atom; each Ris a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each Ris a hydrogen atom or a C-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with at least one Rgroup; each Ris the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent Rgroups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R; and each Ris a C1-C20 hydrocarbyl radical; and (ii) a cocatalyst, preferably comprising an organometallic compound of a Group 13 metal. 2. A catalyst as claimed in wherein the catalyst is obtainable by a process in which(I) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(II) solid particles are formed by solidifying said dispersed droplets.3. A catalyst as claimed in claim 1 , wherein the catalyst further comprises an inert carrier claim 1 , like silica or alumina.4. A catalyst as claimed in wherein in said complex of formula (I) claim 1 , L is —SiR— claim 1 , wherein each Ris independently C1-C20- ...

CATALYSTS

An asymmetric complex of formula (I) 2. A complex as claimed in being a racemic anti isomer.3. A complex as claimed in wherein Ar and Ar′ are different.4. A complex as claimed in wherein Rand R are methyl.5. A complex as claimed in wherein Ris H and/or wherein R is methoxy.6. A complex as claimed in wherein Ris methyl and/or R is tBu.11. A catalyst comprising (i) an asymmetric complex of formula (I) as claimed inand (ii) a cocatalyst comprising a compound of a group 13 metal.12. A catalyst as claimed in obtainable by a process in which(a) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(b) solid particles are formed by solidifying said dispersed droplets.13. A process for the manufacture of a catalyst as claimed in comprising obtaining a complex of formula (I) and a cocatalyst as hereinbefore described;forming a liquid/liquid emulsion system, which comprises a solution of catalyst components (i) and (ii) dispersed in a solvent, and solidifying said dispersed droplets to form solid particles.14. A process for the polymerisation of at least one olefin comprising reacting said at least one olefin with a catalyst as claimed in . This invention relates to new asymmetrical bisindenyl complexes and catalysts comprising those complexes. The invention also relates to the use of the new bisindenyl metallocene catalysts for the production of polypropylene with high molecular weight at good activity levels.Metallocene catalysts have been used to manufacture polyolefins for many years. Countless academic and patent publications describe the use of these catalysts in olefin polymerisation. Metallocenes are now used industrially and polyethylenes and polypropylenes in particular are often produced using cyclopentadienyl based catalyst systems with different substitution patterns.The present inventors sought new metallocenes, which ...

PROCESS FOR PREPARING PROPYLENE COPOLYMERS COMPRISING C4-C12-APHA OLEFIN COMONOMER UNITS

The present invention relates to a process for producing a copolymer of propylene, optionally ethylene, and at least one comonomer selected from alpha olefins having from 4 to 12 carbon atoms using a specific class of metallocene complexes in combination with a cocatalyst system comprising a boron containing cocatalyst and an aluminoxane cocatalyst, preferably in a multistage polymerization process including a gas phase polymerization step. 3. The process according to claim 1 , wherein the boron based cocatalyst is one of formula (Z){'br': None, 'sub': '3', 'BY\u2003\u2003(Z)'}wherein Y independently is the same or can be different and is a hydrogen atom, an alkyl group of from 1 to about 20 carbon atoms, an aryl group of from 6 to about 15 carbon atoms, alkylaryl, arylalkyl, haloalkyl or haloaryl each having from 1 to 10 carbon atoms in the alkyl radical and from 6-20 carbon atoms in the aryl radical or fluorine, chlorine, bromine or iodine.4. The process according to claim 1 , wherein the boron based cocatalyst is one of compounds containing a borate anion.5. The process according to claim 1 , wherein the molar ratio of boron in the boron containing cocatalyst to the metal ion M in the complex of formula (I) is in the range of 0.5:1 to 10:1 mol/mol.6. The process according to claim 1 , wherein the molar ratio of aluminium in the aluminoxane cocatalyst to the metal ion M in the complex of formula (I) is in the range of 1:1 to 2000:1 mol/mol.7. The process according to comprising the steps ofa) introducing propylene monomer units, alpha-olefin comonomer units having from 4 to 12 carbon atoms, optionally ethylene comonomer units and hydrogen into a polymerization reactor;b) polymerizing the propylene monomer units, the optional ethylene comonomer, and alpha-olefin comonomer units having from 4 to 12 carbon atoms to form a copolymer of propylene and at least one comonomer selected alpha-olefins from having from 4 to 12 carbon atoms in the presence the single-site ...

Process for preparing polymer compositions

The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 α-olefin monomer, preferably 1-butene- and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst so as to obtain a polypropylene, wherein the polypropylene comprises C4 to C10 α-olefin, preferably 1-butene-derived comonomer units in an amount of from 0,5 to 15 wt % and ethylene-derived comonomer units in an amount of 0 to 3 wt %, and wherein the Ziegler-Natta catalyst comprises i) an external donor of the formula (I): (R3)z(R2O)ySi(R1)x, and ii) a solid catalyst component being free of external carrier material.

PROCESS FOR PREPARING PROPYLENE COPOLYMER COMPOSITIONS

The present invention relates to an olefin polymerization process for producing propylene copolymer composition (P), wherein propylene, Cto Cα-olefin and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst in a multistage polymerization process comprising at least two polymerization reactors, wherein the copolymer composition is bimodal with respect to the content of Cto Cα-olefin and, if present, to ethylene. Further, the invention is directed to the propylene copolymer composition being bimodal with respect to the content of Cto Cα-olefin and optionally to ethylene, and use of said propylene copolymer compositions for producing articles. 1. An olefin polymerization process for producing a propylene copolymer composition (P) , wherein propylene , Cto Cα-olefin and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst in a multistage polymerization process comprising at least two slurry polymerization reactors , wherein the copolymer composition is bimodal with respect to the content of Cto Cα-olefin and , if present , to ethylene , and wherein the process comprises{'b': '1', 'feeding a fresh propylene monomer (C3) via a first line () into a monomer feed tank (A),'}{'b': '3', 'feeding circulated unreacted monomers from a product receiver (D) into the monomer feed tank (A) via a third line (),'}{'b': 4', '4', '4, 'dividing a monomer mixture from the monomer feed tank (A) in a fourth feed line () into a first divided fourth feed line (-C), which feeds the monomer mixture to a second reactor (C), and to a second divided fourth feed line (-B) which feeds to a first reactor (B),'}{'b': 4', '5', '6, 'feeding a fresh C4 to C10 α-olefin monomer and optionally ethylene into the second divided fourth feed line (-B) via a fifth line () forming a second combined monomer mixture feed in a sixth line (),'}{'b': '6', 'feeding the second combined monomer mixture via the sixth line () to the first reactor (B),'}{'b': '1', 'polymerizing ...

CATALYSTS FOR OLEFIN POLYMERIZATION

New bisindenyl ligand complexes and catalysts comprising those complexes. The invention is directed to improving the manufacturing of specific C1-symmetric bisindenyl complexes by modifying one of the indenyl ligands in order to improve the selectivity of the complex synthesis towards the desired anti-isomer, increase the yield and simplify the purification of the complex. The invention also relates to the use of the new bisindenyl metallocene catalysts for the production of polypropylene homopolymers or propylene copolymers. 2. A metallocene catalyst complex according to claim 1 , whereinMt is Zr,{'sub': '1-6', 'each X is independently a hydrogen atom, a halogen atom, Calkoxy group or an R′ group,'}{'sub': '1-6', 'where R′ is a Calkyl, phenyl or benzyl group.'}{'sub': 1', '20', '6', '20', '7', '20', '7', '20, 'each R is independently a C-C-hydrocarbyl, C-C-aryl, C-C-arylalkyl or C-C-alkylaryl,'}{'sup': 1', '7', '7, 'sub': 2', '1-6', '6-10, 'each Rindependently are the same or can be different and are a CH—Rgroup, with Rbeing H or linear or branched C-alkyl group, Caryl group,'}{'sup': '2', 'sub': 2', '2', '1-4, 'each Ris independently a —CH═, —CY═, —CH—, —CHY— or —CY— group, wherein Y is a Chydrocarbyl group and where n is 3-4,'}{'sup': 3', '4', '3', '4, 'sub': 1', '6', '6-20, 'each Rand Rare independently the same or can be different and are hydrogen, a linear or branched C-C-alkyl group or Caryl groups, whereby at least one Rper phenyl group and at least one Ris not hydrogen,'}{'sup': '5', 'sub': 1', '6', '6-20, 'Ris a linear or branched C-Calkyl group or Caryl group and'}{'sup': 6', '8', '3, 'sub': 3', '1', '4, 'Ris a C(R)group, with Rbeing a linear or branched C-Calkyl group.'}3. A metallocene catalyst complex according to or claim 1 , whereinMt is Zr,each X is independently a chlorine, benzyl or a methyl group,{'sub': 1', '10', '6', '10, 'each R is independently a C-C-hydrocarbyl or C-C-aryl group,'}{'sup': 1', '7', '7, 'sub': 2', '1', '3, 'both Rare the same ...

Asymmetrical Ligands

A ligand of formula (I′) 2. A ligand as claimed in in which Rand R are hydrogen and Rand R are the same.3. A ligand as claimed in claim 1 , in which R is a Chydrocarbyl group containing one or more heteroatoms from groups 14-16 and optionally substituted by one or more halo atoms claim 1 , preferably R is Z′R wherein Z′ is O or S; and R is a Chydrocarbyl group optionally substituted by one or more halo groups.4. A ligand as claimed in claim 1 , wherein Ar and Ar′ are different.9. A ligand as claimed in claim 1 , wherein the ligand is selected from the group consisting of:(6-tert-Butyl-5-methoxy-2-methyl-4-phenyl-1H-inden-1-yl)-(6-tert-butyl-2-methyl-4-phenyl-1H-inden-1-yl)dimethylsilane;(6-tert-Butyl-5-methoxy-2-methyl-4-phenyl-1H-inden-1-yl)[4-(4-tert-butylphenyl)-2-methyl-1H-inden-1-yl]dimethylsilane;[6-tert-Butyl-4-(3,5-di-tert-butylphenyl)-2-methyl-1H-inden-1-yl]-(6-tert-butyl-5-methoxy-2-methyl-4-phenyl-1H-inden-1-yl)dimethylsilane;[4-(4-tert-Butylphenyl)-2-methyl-1H-inden-1-yl][6-isopropyl-2-methyl-5-(pentafluoro phenoxy)-4-phenyl-1H-inden-1-yl]dimethylsilane;(2-methyl-4-phenyl-5-methoxy-6-tert-butyl-1H-inden-1-yl)[2,7-dimethyl-4-(3,5-di-tert-butylphenyl)-1H-inden-1-yl]dimethylsilane;(2-methyl-4-phenyl-5-methoxy-6-tert-butyl-1H-inden-1-yl)[2,4-dimethyl-7-(3,5-di-tert-butylphenyl)-1H-inden-1-yl]dimethyl silane;[2-Methyl-4-phenyl-5-methoxy-6-tert-butyl-1H-inden-1-yl]-[2-methyl-4-(3,5-di-tertbutylphenyl)-7-methoxy-1H-inden-1-yl]dimethylsilane;[6-tert-Butyl-4-(4-tert-butylphenyl)-5-methoxy-2-methyl-1H-inden-1-yl][4-(4-tert-butylphenyl)-2-methyl-1H-inden-1-yl]dimethylsilane;[6-tert-Butyl-4-(3,5-di-tert-butylphenyl)-5-methoxy-2-methyl-1H-inden-1-yl][4-(4-tert-butylphenyl)-2-methyl-1H-inden-1-yl]dimethylsilane; or(6-tert-Butyl-5-isobutoxy-2-methyl-4-phenyl-1H-inden-1-yl)[4-(4-tert-butylphenyl)-2-methyl-1H-inden-1-yl]dimethylsilane. This is a divisional of U.S. patent application Ser. No. 14/131,588, having a filing date of Jul. 6, 2012 (PCT filing date) and a 371(c) ...

C2C3 Random Copolymer Composition with Improved Balance Between Sealing Initiation Temperature and Melting Point

CCrandom copolymer composition with an improved balance between sealing initiation temperature (SIT) and melting point (Tm), i.e. low SIT and high melting point. In addition the inventive composition shows a broad sealing window, low hexane solubles and good optical properties, like low haze. 1. A CCrandom copolymer composition comprising 3 polymer fractions (A) , (B) and (C) with different comonomer content ,{'sub': 2', '3', '2', '2, '(A) 30 to 65 wt % of a CCrandom copolymer with a Ccontent (CA) of 0.4 to 1.5 wt % based on copolymer (A) as measured with Fourier-transform infrared (FTIR) spectroscopy,'}{'sub': 2', '3', '2', '2, '(B) 25 to 50 wt % of a CCrandom copolymer with a Ccontent (CB) of 3.0 to 10.0 wt % based on copolymer (B) and'}{'sub': 2', '3', '2', '2, '(C) 5 to 35 wt % of a CCrandom copolymer with a Ccontent (CC) of 7.0 to 15.0 wt % based on copolymer (C),'}whereby the sum of the amount of the 3 polymer fractions (A), (B) and (C) is 100% and{'sub': 2', '2', '2, 'whereby the comonomer content of the polymer fractions increases from fraction (A) to fraction (C) according to (CA)<(CB)<(CC),'}and whereby the composition is characterized by{'sub': '2', '(i) a total Ccontent in the range of 3.0 wt % up to 7.0 wt %, as measured with Fourier-transform infrared (FTIR) spectroscopy,'}(ii) a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 2.0 to 15.0 g/10 min,(iii) a melting temperature Tm as determined by DSC according to ISO 11357 of from 128° C. to 145° C.,{'sub': 'c', '(iv) a crystallization temperature Tas determined as determined by DSC according to ISO 11357 of from 85° C. to 110° C. and'}(v) a hexane solubles content determined in accordance with FDA section 177.1520 of at most 2.0 wt %.2. The CCrandom copolymer composition according to being further characterized by only one peak in the temperature range of 25 to −50° C. as determined by dynamic mechanical thermal analysis (DMTA) according to ISO 6721-7 claim 1 , indicating a ...

NEW CATALYST SYSTEM FOR PRODUCING POLYETHYLENE COPOLYMERS IN A HIGH TEMPERATURE SOLUTION POLYMERIZATION PROCESS

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) wherein M is Hf X is a sigma ligand, L is a bridge of the formula —SiR—, wherein each Ris independently a C-C-hydrocarbyl, tri(C-C-alkyl)silyl, C-C-aryl, C-C-arylalkyl or C-C-alkylaryl n is 0, 1 or 2 Rand R are the same or can be different and can be a linear or branched C-C-alkyl group, Rand R are the same or are different and are a CH—Rgroup, with Rbeing H or linear or branched C-C-alkyl group Rand R are the same or are different and can be H or a linear or branched C-C-alkyl group or a OR group, wherein R is a C-C-alkyl group Rand R are the same or are different and can be H or a C(R)group, with Rbeing the same or different and Rcan be H or a linear or branched C-C-alkyl group or Rand Rand/or R and R taken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety, and Rand R can be the same or are different and can be H or a linear or branched C-C-alkyl group (ii) an aluminoxane cocatalyst and/or (iii) a boron containing cocatalyst and (iv) optionally an aluminium alkyl compound. 2. Catalyst system according to claim 1 , wherein in the formula (I)M is Hf,{'sup': 11', '11', '11', '11', '11', '11', '11', '11', '11', '11, 'sub': 2', '3', '2', '2', '1', '20', '2', '20', '2', '20', '6', '20', '7', '20', '7', '20', '3', '2', '2, 'X which may be the same or different, and is a hydrogen atom, a halogen atom, a R, OR, OSOCF, OCOR, SR, NRor PRgroup, wherein Ris a linear or branched, cyclic or acyclic, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, C-C-aryl, C-C-alkylaryl or C-C-arylalkyl radical; optionally containing heteroatoms belonging to groups 14-16 or is SiR, SiHRor SiHR,'}{'sup': 8', '8, 'sub': 2', '1', '10', '6', '10, 'L is a bridge of the formula —SiR—, wherein both Rare the same C-C-hydrocarbyl or C-C-aryl group,'}{'sup': 1', '1′, 'sub': 1', '6, 'Rand R are the same and ...

IMPROVED CATALYST SYSTEM FOR PRODUCING POLYETHYLENE COPOLYMERS IN A HIGH TEMPERATURE SOLUTION POLYMERIZATION PROCESS

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) wherein M is Hf or Zr X is a sigma ligand, L is a bridge of the formula —SiR—, wherein each Ris independently a C-C-hydrocarbyl, tri(C-C-alkyl)silyl, C-C-aryl, C-C-arylalkyl or C-C-alkylaryl n is 0, 1 or 2 Rand R are the same or can be different and can be a linear or branched C-C-alkyl group, Rand R are the same or are different and are a CH—Rgroup, with Rbeing H or linear or branched C-C-alkyl group Rand R are the same or are different and can be H or a linear or branched C-C-alkyl group or a OR group, wherein R is a C-C-alkyl group Rand R are the same or are different and can be H or a C(R)group, with Rbeing the same or different and Rcan be H or a linear or branched C-C-alkyl group or Rand Rand/or R and R taken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety, with the proviso that if Rand Ras well as R and R taken together form an unsubstituted 5 membered ring condensed to the benzene ring of the indenyl moiety then Rand R are not a C-alkyl group; and Rand R can be the same or are different and can be H or a linear or branched C-C-alkyl group (ii) an aluminoxane cocatalyst and (iii) optionally a boron containing cocatalyst 2. Catalyst system according to claim 1 , wherein in the formula (I)M is Zr,{'sup': 11', '11', '11', '11', '11', '11', '11', '11', '11', '11', '8', '8, 'sub': 2', '3', '2', '2', '1', '20', '2', '20', '2', '20', '6', '20', '7', '20', '7', '20', '3', '2', '2', '2', '1', '10', '6', '10, 'X which may be the same or different, and is a hydrogen atom, a halogen atom, a R, OR, OSOCF, OCOR, SR, NRor PRgroup, wherein Ris a linear or branched, cyclic or acyclic, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, C-C-aryl, C-C-alkylaryl or C-C-arylalkyl radical; optionally containing heteroatoms belonging to groups 14-16 or is SiR, SiHRor SiHR, L is a ...

POLYPROPYLENE COMPOSITION COMBINING SOFTNESS, TOUGHNESS, LOW HAZE AND HIGH THERMAL RESISTANCE

The present invention relates to a polypropylene composition comprising comonomer units derived from ethylene in an amount of from 1.5 wt % to 35 wt %, and from at least one Calpha-olefin in an amount of from 1.0 mol % to 3.0 mol %, wherein the polypropylene composition has an amount of xylene solubles XS of at least 40 wt %, and the xylene solubles have an amount of ethylene-derived comonomer units of from 4.0 wt % to 70 wt %. 1. A polypropylene composition comprising comonomer units derived from ethylene in an amount of from 1.5 wt % to 35 wt % , and from at least one Calpha-olefin in an amount of from 1.0 mol % to 3.0 mol % , wherein the polypropylene composition has an amount of xylene solubles XS (XS) of at least 40 wt % , and the xylene solubles have an amount of ethylene-derived comonomer units of from 4.0 wt % to 70 wt %.2. The polypropylene composition according to claim 1 , wherein the at least one Calpha-olefin is selected from 1-hexene claim 1 , 1-octene claim 1 , or any mixture thereof.3. The polypropylene composition according to claim 1 , wherein the following relation is satisfied:{'br': None, 'i': C', 'XS', 'XS/', 'C, '[2()×100]/2(total)≧0.9'}whereinC2(XS) is the amount in wt % of the ethylene-derived comonomer units in the xylene solubles,XS is the amount in wt % of xylene solubles of the polypropylene composition, andC2 (total) is the amount in wt % of the ethylene-derived comonomer units in the polypropylene composition.4. The polypropylene composition according to claim 1 , wherein the xylene solubles contain an amount of comonomer units which are derived from the least one Calpha-olefin of from 0.01 mol % to 2.0 mol %.5. The polypropylene composition according to claim 1 , wherein the total amount of comonomer units derived from ethylene and at least one Calpha-olefin claim 1 , in the polypropylene composition is from 3.0 mol % to 48 mol %.6. The polypropylene composition according to claim 1 , which has a tensile modulus of less 450 MPa.7. The ...

POLYPROPYLENE BLEND WITH IMPROVED BALANCE BETWEEN SIT AND MELTING POINT

Polymer composite comprising propylene copolymer composition having a comonomer content in the range of 2.5 to 10 wt.-%, the comonomers are Cto Cα-olefins, and a low-crystalline polymer having a melting temperature of below 120° C., 1. Polymer composite comprising:{'sub': 5', '12, '(a) a polypropylene (A) having a comonomer content of below 4.0 wt. %, the comonomers are Cto Cα-olefins,'}{'sub': 5', '12, '(b) a propylene copolymer (B) having a comonomer content of 4.0 to 20.0 wt. %, the comonomers are Cto Cα-olefins, and'}(c) a low-crystalline polymer (C) having a melting temperature of below 120° C.,wherein further(i) the weight ratio of the polypropylene (A) to the propylene copolymer (B) is in the range of 20/80 to 80/20,(ii) the polymer composite comprises 5 to 50 wt. % based on the total amount of polymer composite of low-crystatline polymer (C), and(iii) the low-crystalline polymer (C) has a lower crystallinity and/or a lower melting temperature than the polypropylene (A) and the propylene copolymer (B).2. Polymer composite according to claim 1 , wherein a mixture (M) of the polypropylene (A) and the propylene copolymer (B) has:(a) a higher melting temperature than the low-crystalline polymer (C) and/or{'sub': 5', '12, '(b) a comonomer content of at least 2.5 wt. % the comonomers are Cto Cα-olefins.'}3. Polymer composite according to claim 1 , wherein a mixture (M) of the polypropylene (A) and the propylene copolymer (B) has:{'sub': '2', '(a) a melt flow rate MFR(230° C.) measured according to ISO 133 in the range of 1.0 to 50.0 g/10 min, and/or'}(b) a melting temperature of more than 130° C., and/or(c) a xylene soluble content (XCS) determined at 23° C. according to ISO 6427 of below 15 wt. %.4. Polymer composite comprising:{'sub': 5', '12, '(a) propylene copolymer composition (P) having a comonomer content in the range of 2.5 to 10 wt. %, the comonomers are Cto Cα-olefins, and'} (i) a melting temperature of at least 140° C.,', '(ii) a heat sealing initiation ...

PROPYLENE COPOLYMER WITH HIGH IMPACT PROPORTIES

Monophasic propylene copolymer with high stiffness and impact resistance. 1. Propylene copolymer (R-PP) having{'sub': '2', '(e) a melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of more than 2.5 to 15.0 g/10 min,'}(f) a comonomer content in the range of 2.0 to below 12.0 mol.-%,(g) a melting temperature in the range of 125 to below 143° C., and(h) a xylene cold soluble fraction (XCS) in the range of 17.0 to 45.0 wt.-%.2. Propylene copolymer (R-PP) according to claim 1 , wherein said propylene copolymer (R-PP) has(a) a glass transition temperature in the range of −12 to +2° C.;and/or(b) no glass transition temperature below −20° C.3. Propylene copolymer (R-PP) according to or claim 1 , wherein said propylene copolymer (R-PP) has(a) a molecular weight distribution (Mw/Mn) of at least 2.7;and/or(b) a polydispersity index (PI) of at least 2.3.4. Propylene copolymer (R-PP) according to any one of the preceding claims claim 1 , wherein said propylene copolymer (R-PP){'sup': '13', '(a) has 2,1 regio-defects of at least 0.2% determined by C-NMR spectroscopy;'}and/or(b) is monphasic.5. Propylene copolymer (R-PP) according to any one of the preceding claims claim 1 , wherein the comonomer is selected from ethylene claim 1 , Cto Cα-olefin claim 1 , and mixtures thereof claim 1 , preferably the comonomer is ethylene.6. Propylene copolymer (R-PP) according to any one of the preceding claims claim 1 , wherein said propylene copolymer (R-PP) comprises two fractions claim 1 , a first propylene copolymer fraction (R-PP1) and a second propylene copolymer fraction (R-PP2) claim 1 , said first propylene copolymer fraction (R-PP1) differs from said second propylene copolymer fraction (R-PP2) in the melt flow rate MFR(230° C.) and/or in the comonomer content claim 1 , preferably in the melt flow rate MFR(230° C.) and in the comonomer content.7. Propylene copolymer (R-PP) according to claim 6 , wherein(a) the weight ratio between the first propylene copolymer ...

NEW CATALYST SYSTEM FOR PRODUCING POLYETHYLENE COPOLYMERS IN A HIGH TEMPERATURE SOLUTION POLYMERIZATION PROCESS

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I), M is Hf or a mixture with Zr, provided that more than 50% by moles of the complex of Formula I has M=Hf, X is a sigma ligand, R are the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms or silicon atoms, Ris a C-C-aryl, which can be unsubstituted or substituted by one or up to 5 linear or branched C-Calkyl group(s), Ris a saturated linear or cyclic C-Calkyl group or a branched CRRRgroup, wherein Ris hydrogen or an C-Calkyl group and Rand Rare the same or are different and can be an C-Calkyl group and (ii) a boron containing cocatalyst 2. The catalyst system according to claim 1 , wherein in the formula (I):M is Hf;{'sup': 6', '6', '6', '6', '6', '6', '6', '6', '6', '6, 'sub': 2', '3', '2', '2', '1', '20', '2', '20', '2', '20', '6', '20', '7', '20', '7', '20', '3', '2', '2', '2, 'each X is independently a hydrogen atom, halogen atom, R, OR, OSOCF, OCOR, SR, NR, or PRgroup, wherein Ris a linear or branched, cyclic or acyclic, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, C-C-aryl, C-C-alkylaryl, or C-C-arylalkyl radical; optionally containing heteroatoms belonging to groups 14-16 or is SiR, SiHRor SiHR;'}{'sub': 1', '6', '6', '10', '6', '20', '6', '20, 'R are the same or different and are independently selected from the group consisting of saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which do not contain heteroatoms or silicon atoms;'}{'sup': '1', 'sub': 6', '10', '1', '6, 'Ris a C-C-aryl group, which is unsubstituted or substituted by one linear or branched C-Calkyl group;'}{'sup': 2', '3', '4', '5', '3', '4', '5, 'sub': 3', '10', '1', '10, 'Ris a saturated linear or cyclic C-Calkyl group or a branched CRRRgroup, wherein Ris hydrogen and Rand Rare ...

CATALYST SYSTEM FOR PRODUCING POLYETHYLENE COPOLYMERS IN A HIGH TEMPERATURE SOLUTION POLYMERIZATION PROCESS

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) wherein: M is Hf or a mixture with Zr, provided that more than 50% by moles of the complex of Formula (I) has M=Hf; X is a sigma ligand; R are the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Cheteroaryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms or silicon atoms; Ris a C-Caryl or C-Calkylaryl group optionally containing up to 2 heteroatoms or silicon atoms or a C-Cheteroaryl group; Ris a C-Ccycloalkyl group, optionally carrying alkyl substituents in beta-positions, of formula (II) in which R′ can be the same or can be different from each other and can be hydrogen or is defined as R and n is 1 to 17 (ii) a boron containing cocatalyst 2. The catalyst system according to claim 1 , wherein in the formula (I):M is Hf;{'sup': 3', '3', '3', '3', '3', '3', '3', '3', '3', '3, 'sub': 2', '3', '2', '2', '1', '20', '2', '20', '2', '20', '6', '20', '7', '20', '7', '20', '3', '2', '2, 'each X is independently a hydrogen atom, halogen atom, R, OR, OSOCF, OCOR, SR, NR, or PRgroup, wherein Ris a linear or branched, cyclic or acyclic, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, C-C-aryl, C-C-alkylaryl, or C-C-arylalkyl radical; optionally containing heteroatoms belonging to groups 14-16 or is SiR, SiHR, or SiHR;'}{'sub': 1', '6', '6', '10', '6', '20', '6', '20, 'R are the same or different and are saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which do not contain heteroatoms or silicon atoms;'}{'sup': '1', 'sub': 6', '10', '6', '12', '4', '8, 'Ris a C-Caryl or C-Calkylaryl group, which do not contain heteroatoms or silicon atoms, or a C-Cheteroaryl group; and'}{'sup': '2', 'sub': 4', '10, 'claim-text': [{'sub': 1', '6', '6', '10, 'R′ are the same or different and are independently selected from the ...

ALUMINOXANE-ACTIVATED METALLOCENE CATALYSTS

Catalyst system, the catalyst system comprising (i) at least one metallocene complex of formula (I) wherein Mt1 is Hf, X is a sigma-donor ligand, R, R, Rare the same or different from each other and can be hydrogen or a saturated linear or branched C-Calkyl, whereby the alkyl group can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, or Rand Ror Rand Rcan form a ring having 4 to 6 C-atoms and 1 to 3 double bonds, Rand Rare the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, n can be 1 to 5, Ar is a C-C-aryl or -heteroaryl group, which can be unsubstituted or substituted by 1 to 5 linear or branched C-Calkyl group(s), and (ii) an aluminoxane cocatalyst and (iii) optionally an aluminium alkyl compound AI(R), with Rbeing a linear or branched C-C-alkyl group. 3. The catalyst system of claim 1 , wherein in the formula (I);Mt1 is Hf,{'sup': 6', '6', '6', '6', '6', '6', '6', '6', '6', '6, 'sub': 2', '3', '2', '2', '1', '20', '2', '20', '2', '20', '6', '20', '7', '20', '7', '20', '3', '2', '2, 'X is independently a hydrogen atom, a halogen atom, a R, OR, OSOCF, OCOR, SR, NRor PRgroup, wherein Ris a linear or branched, cyclic or acyclic, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, C-C-aryl, C-C-alkylaryl or C-C-arylalkyl radical, optionally comprising up to 2 heteroatoms belonging to groups 14-16 of the periodic table, or is SiR, SiHRor SiHR,'}{'sup': 1', '2', '3', '1', '2', '3, 'sub': 1', '6, 'R, R, Rare the same or different from each other and are hydrogen or a saturated linear or branched C-Calkyl group, wherein the alkyl group does not comprise any heteroatom belonging to groups 14-16 of the periodic table, or Ris hydrogen and Rand Rform a ring having 5 to 6 C-atoms and 1 to 3 double bonds,'}{'sup': 4', '5, 'sub': 1', '10', '6', '10, 'Rand Rare the same or ...

PROCESS FOR THE PREPARATION OF A PROPYLENE POLYMER

A process for the preparation of a propylene polymer in a multistage polymerisation process in the presence of a single site catalyst, said process comprising: (I) in a prepolymerisation step prepolymerising a single site catalyst in the presence of propylene and optionally at least one C2-10 alpha olefin comonomer and in the presence of hydrogen or in the absence of hydrogen; (II) in a slurry polymerisation step, polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, with the pre-polymerised catalyst of step (I) in the presence of hydrogen; and subsequently (III) in a gas polymerisation step polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of catalyst and polymer from step (II) and optionally in the presence of hydrogen so as to form a propylene homopolymer or copolymer; wherein the amount of hydrogen fed to the pre-polymerisation step (I) is at most 15% of the total amount of hydrogen fed to steps (I) and (II) of the polymerisation process. 1. A process for the preparation of a propylene polymer in a multistage polymerisation process in the presence of a single site catalyst , said process comprising:(I) prepolymerising a single site catalyst in the presence of propylene and optionally at least one C2-10 alpha olefin comonomer and in the presence of hydrogen or in the absence of hydrogen;(II) in a slurry polymerisation step, polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, with the prepolymerised catalyst of step (I) in the presence of hydrogen; and subsequently(III) in a gas polymerisation step polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of catalyst and polymer from step (II) and optionally in the presence of hydrogen so as to form a propylene homopolymer or copolymer;wherein the amount of hydrogen fed to the prepolymerisation step (I) is at most 15% of the total amount of hydrogen fed to steps (I) and (II) ...

HETEROPHASIC COPOLYMERS

A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix, wherein the xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %; the heterophasic polypropylene resin has an MFR2 of 0.01 to 50 g/10 min; the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %; the heterophasic polypropylene resin has a notched charpy impact strength at −20 C of at least 25 kJ/m, preferably at least 50 kJ/m; and wherein the MFR(Matrix)/MFR(XS)≧5, preferably ≧10. 1. A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix , whereinthe xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %;{'sub': '2', 'the heterophasic polypropylene resin has an MFRof 0.01 to 50 g/10 min;'}the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %;{'sup': '2', 'the heterophasic polypropylene resin has a notched charpy impact strength at −20° C. of at least 25 kJ/m; and wherein'}{'sub': 2', '2, 'the MFR(XS)/MFR(matrix)≅5.'}2. A heterophasic polypropylene resin comprising a polypropylene homopolymer phase (A) and an ethylene-propylene copolymer phase (B) dispersed within phase (A) , whereinthe xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %;{'sub': '2', 'the heterophasic polypropylene resin has an MFRof 0.01 to 50 g/10 min;'}the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %;{'sub': '2', 'the MFR(xylene insoluble) is 0.2 g/10 min or less; and wherein'}{'sub': 2', '2, ' ...

PROCESS FOR PREPARING PROPYLENE POLYMER COMPOSITIONS

The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 a-olefin, preferably 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst so as to obtain a polypropylene, wherein the polypropylene comprises C4 to C10 a-olefin, preferably 1-butene-derived comonomer units in an amount of from 0.5 wt % to 15 wt % and ethylene-derived comonomer units in an amount of 0 wt % to 3 wt %, and wherein the Ziegler-Natta catalyst comprises i) an external donor of the formula (I): (R)(RO)Si(R)x and ii) a solid Ziegler-Natta catalyst component being free of external carrier material. 2: The process according to claim 1 , wherein y is 2 or 3 claim 1 , z is 0 claim 1 , Ris a linear Calkyl.3: The process according to claim 1 , wherein the amount of C4 to C10 α-olefin-derived comonomer units in the polypropylene composition is from 2 wt % to 12 wt % and the amount of the ethylene-derived comonomer units is from 0 wt % to 2.5 wt %.4: The process according to claim 1 , wherein the propylene polymer composition is a propylene-1-butene copolymer or propylene-1-butene-ethylene terpolymer.5: The process according to claim 1 , wherein the propylene polymer composition is prepared in a process comprising a liquid phase polymerization.6: The process according to claim 1 , the Ziegler-Natta solid catalyst component ii) comprises a compound of Group 1 to 3 metal claim 1 , a compound of a Group 4 to 6 transition metal (Nomenclature of Inorganic Chemistry claim 1 , IUPAC 1988 and an internal electron donor.7: The process according to claim 1 , wherein the particles of the solid Ziegler-Natta catalyst component ii) have a surface area less than 20 m/g.8: The process according to claim 1 , wherein the solid Ziegler-Natta catalyst component is obtainable or obtained by a precipitation or emulsion-solidification method.9: The process according to claim 1 , wherein the solid Ziegler-Natta catalyst component is obtainable or ...

Multi-layer biaxially oriented polymer film

A multi-layer biaxially oriented polymer film comprising a core layer (CL) and at least one sealing layer (SL), said sealing layer(s) (SL) comprise(s) a propylene copolymer composition (P) having a comonomer content in the range of 3.0 to 8.0 wt.-%, the comonomers are C 5 to C 12 α-olefins, said propylene copolymer composition (P) comprises a polypropylene (A) and a polypropylene (B) in the weight ratio [(A)/(B)] of 20/80 to 80/20, wherein said polypropylene (A) has a comonomer content of equal or below 4.0 wt.-%, the comonomers are C 5 to C 12 α-olefins, and said propylene copolymer (B) has a comonomer content of 4.0 to 20.0 wt.-%, the comonomers are C 5 to C 12 α-olefins.

Catalyst

A process for the preparation of a compound of formula (V): 110.-. (canceled)1316-. (canceled)17. A process as claimed in claim 11 , wherein said nickel imidazolidin-2-ylidene compound is PPhIPrNiCl claim 11 , wherein IPr represents 1 claim 11 ,3-bis(2 claim 11 ,6-diisopropylphenyl)imidazolidin-2-ylidene or 1 claim 11 ,3-bis(2 claim 11 ,4 claim 11 ,6-trimethylphenyl)imidazolidin-2-ylidene.18. A process as claimed in claim 11 , further comprising a step of contacting the reaction product of compounds (VI) and (VII) with an acid catalyst.19. A process as claimed in claim 18 , wherein said acid catalyst is tosyl alcohol.20. A process as claimed in claim 11 , wherein the alkoxy group at the 1-position in formula (VI) is MeO—.21. A process as claimed in claim 11 , wherein{'sub': 2', '2, 'Ris hydrogen or a C1-C20 hydrocarbyl radical provided that at least one Ris not hydrogen;'}{'sub': '5', 'Ris hydrogen or an aliphatic C1-20 hydrocarbyl group;'}{'sub': '6', 'Ris hydrogen or an aliphatic C1-20 hydrocarbyl group;'}n is 1, 2 or 3; and{'sub': '8', 'each Ris an aliphatic C1-20 hydrocarbyl group.'}22. A process as claimed in claim 11 , wherein{'sub': '2', 'Ris a C1-10 alkyl group;'}{'sub': '5', 'Ris hydrogen or a C1-10 alkyl group;'}{'sub': '6', 'Ris hydrogen or a C1-10 alkyl group;'}n is 1 to 3;{'sup': '8', 'and each Ris a C1-20 hydrocarbyl group.'}23. A process as claimed in claim 11 , wherein{'sub': '2', 'Ris a C1-10 alkyl group;'}n is 1 to 3;{'sub': '5', 'Ris hydrogen;'}{'sub': '6', 'Ris hydrogen;'}{'sup': '8', 'and each Ris a C1-10 alkyl group or C6-10 aryl group.'}23. A process as claimed in claim 11 , wherein{'sub': '5', 'Ris hydrogen;'}{'sub': '6', 'Ris hydrogen;'}{'sub': '2', 'Ris methyl;'}n is 2; and{'sub': 8', '8, 'Ris C3-8 alkyl and Ris in the 3,5-position on the ring.'}24. A process as claimed in claim 11 , wherein the halide is Br. This invention relates to new bisindenyl catalysts, in particular, solid particulate racemic symmetrical metallocene catalysts ...

POLYPROPYLENE COMPOSITION FOR AUTOMOTIVE INTERIOR APPLICATIONS

Polypropylene composition comprising a heterophasic propylene copolymer and a mineral filler, wherein said heterophasic propylene copolymer has a melting temperature in the range of 140 to 155° C., a xylene cold soluble content in the range of 20 to 35 wt.-% and a comonomer content of the xylene cold soluble fraction in the range of 18 to 95 wt.-%, wherein further the weight ratio between heterophasic propylene copolymer and the mineral filler is in the range of 2/1 to 4/1. 114-. (canceled)15. A polypropylene composition comprising (a1) a matrix (M) being a propylene homopolymer (H-PP) or propylene copolymer (R-PP) and', '(a2) an elastomeric propylene copolymer (EC) dispersed in said matrix (M),, '(a) a heterophasic propylene copolymer (HECO) comprising'}and(b) a mineral filler (F),wherein said heterophasic propylene copolymer (HECO) has(i) a melting temperature determined by differential scanning calorimetry (DSC) in the range of 140 to 155° C.,(ii) a xylene cold soluble (XCS) content in the range of 20 to 35 wt.-%,and(iii) a comonomer content of the xylene cold soluble (XCS) fraction in the range of 18 to 95 wt.-%,wherein further the weight ratio between heterophasic propylene copolymer (HECO) and the mineral filler (F) [(HECO)/(F)] is in the range of 2/1 to below 4/1.16. The polypropylene composition according to claim 15 , wherein{'sub': '2', '(a) the matrix (M) has melt flow rate MFR(230° C.) measured according to ISO 1133 in the range of 20 to 80 g/10 min,'}and/or{'sup': '13', '(b) the heterophasic propylene copolymer (HECO) has 2,1 regio-defects of at least 0.2% determined by C-NMR spectroscopy.'}17. A polypropylene composition comprising (a1) a matrix (M) being a propylene homopolymer (H-PP) or propylene copolymer (R-PP) and', '(a2) an elastomeric propylene copolymer (EC) dispersed in said matrix (M),, '(a) a heterophasic propylene copolymer (HECO) comprising'}and(b) a mineral filler (F),wherein said heterophasic propylene copolymer (HECO) has{'sup': '13', ...

CATALYSTS

A racemic complex of formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′C—, —R′C—CR′, —R′Si—, —R′Si—SiR′—, —R′Ge—, wherein each R′ is independently a hydrogen atom, C-hydrocarbyl, tri(C-alkyl)silyl, C-aryl, C-arylalkyl or C-alkylaryl; Rand R′ are each independently a Chydrocarbyl radical optionally containing one or more heteroatoms from groups 14-16; R′ is a Chydrocarbyl group optionally containing one or more heteroatoms from groups 14-16 and optionally substituted by one or more halo atoms. 2. The complex of being a racemic anti isomer.3. The complex of claim 1 , in which Rand R are hydrogen and Rand R are the same.4. The complex of claim 1 , in which R is R is a Chydrocarbyl group containing one or more heteroatoms from groups 14-16 and optionally substituted by one or more halo atoms claim 1 , preferably R is Z′R wherein Z′ is O or S; and R is a Chydrocarbyl group optionally substituted by one or more halo groups.5. The complex of claim 1 , wherein Ar and Ar′ are different.10. A catalyst comprising a complex of formula (I) as claimed in and (ii) a cocatalyst comprising a compound of a group 13 metal claim 1 , e.g. Al or boron.11. The catalyst of obtainable by a process in which(a) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(b) solid particles are formed by solidifying said dispersed droplets.12. A process for the manufacture of the catalyst as defined in claim 10 , comprising obtaining a complex of formula (I) and a cocatalyst as defined in ;forming a liquid/liquid emulsion system, which comprises a solution of catalyst components (i) and (ii) dispersed in a solvent, and solidifying said dispersed droplets to form solid particles.13. Use in olefin polymerisation of the catalyst as defined in claim 10 , especially for the formation of a ...

PROCESS FOR THE PREPARING HETEROPHASIC PROPYLENE COPOLYMERS

Process for producing a heterophasic propylene copolymer using a specific class of metallocene complexes in a multistage polymerization process including a gas phase polymerization step. The invention further relates to the use of catalysts which comprise a specific class of metallocene complexes to produce a heterophasic propylene copolymer in a multistep process including a gas phase polymerization step. 2. The process as claimed in claim 1 , wherein in the formula (I) each X is independently a hydrogen atom claim 1 , a halogen atom claim 1 , Calkoxy group claim 1 , Calkyl claim 1 , phenyl or benzyl group.3: The process according to claim 1 , wherein in the formula (I) L is dimethylsilyl claim 1 , methylcyclohexylsilyl (i.e. Me-Si-cyclohexyl) claim 1 , ethylene or methylene.4: The process according to claim 1 , wherein in the formula (I):{'sup': 3', '3′, 'sub': 1', '4, 'Rand R are the same and are linear Cto Calkyl group, and'}{'sup': 4', '4′, 'sub': 4', '6, 'Rand R are each independently a branched Cto Calkyl group.'}5: The process according to claim 1 , wherein in the formula (I):M is zirconium,{'sub': 1-4', '1-4, 'X is independently a halogen atom, Calkoxy group, Calkyl, phenyl or benzyl group,'}L is dimethylsilyl,{'sup': 1', '1′', 'x', 'x, 'sub': 2', '1-3, 'Rand Rare the same and are hydrogen or a group —CHRwherein Ris either H or a Calkyl group,'}{'sup': 2', '2′', 'x', 'x, 'sub': 2', '1-3, 'Rand R are the same and are hydrogen or a group —CHRwherein Ris either H or a Calkyl group,'}{'sup': 1', '1′', '2', '2′, 'whereby either Rand Ror Rand R are hydrogen,'}{'sup': 3', '3′, 'sub': 1', '4, 'Rand R are the same and are a linear Cto Cgroup,'}{'sup': 4', '4′, 'Rand R are each a tert.-butyl group, and'}{'sup': 5', '5′, 'sub': 1', '4, 'Rand R are each a linear Cto Calkyl group.'}6: The process according to claim 1 , wherein the complex of formula (I) is rac-MeSi(2-Me-4-(3 claim 1 ,5-MePh)-5-OMe-6-tBu-Ind)ZrClor rac-MeSi(2-Me-4-(4-tBu-Ph)-5-OMe-6-tBu-Ind)ZrCl7: The ...

PROCESS

A process for the preparation of a propylene homopolymer in a multistage polymerisation process in the presence of a single site catalyst, said process comprising: (I) in a slurry polymerisation step, polymerising propylene in the presence of said single site catalyst; and subsequently (II) in a gas polymerisation step polymerising propylene in the presence of catalyst and polymer from step (I) so as to form a propylene homopolymer; wherein said catalyst comprises (i) a metallocene complex of a Group 4 metal, said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron based cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier. 1. A process for the preparation of a propylene homopolymer in a multistage polymerisation process in the presence of a single site catalyst , said process comprising:(I) in a slurry polymerisation step, polymerising propylene in the presence of said single site catalyst; and subsequently(II) in a gas polymerisation step polymerising propylene in the presence of catalyst and polymer from step (I) so as to form a propylene homopolymer;wherein said catalyst comprises(i) a metallocene complex of a Group 4 metal, said metallocene comprising at least two cyclopentadienyl type ligands;(ii) a boron based cocatalyst; and(iii) an aluminoxane cocatalyst;said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier.2. A process for the preparation of a propylene homopolymer as claimed in in a multistage polymerisation process in the presence of a single site catalyst claim 1 , said process comprising:(Ia) prepolymerising a single site catalyst in the presence of propylene;(Ib) in a slurry polymerisation step, polymerising propylene with the prepolymerised catalyst of step (Ia); and subsequently(II) in a gas polymerisation step polymerising propylene in the presence of ...

PROCESS FOR THE PREPARATION OF PROPYLENE COPOLYMER CONTAINING HIGHER ALPHA-OLEFINS

Process for the preparation of a copolymer of propylene and a Ca-olefin (PPC) having a melt flow rate MFR(230° C.) of below 3.0 g/10 mm, wherein the polymerization takes in the presence of a metallocene catalyst. 2. Process according to claim 1 , wherein said catalyst comprises additionally a cocatalyst claim 1 , said cocatalyst comprises an organometallic compound of a Group 13 metal.3. Process according to claim 1 , wherein said catalyst is a solid catalyst free from external carrier.4. Process according to claim 1 , wherein the complex of formula (I) is a racemic anti isomer.6. Process according to claim 1 , wherein the catalyst is obtainable by a process in which:(a) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the complex and optionally of a cocatalyst dispersed in a solvent so as to form dispersed droplets; and(b) solid particles are formed by solidifying said dispersed droplets.7. Process according to claim 1 , wherein the polymerization takes place in a one polymerization reactor (R1) or in two polymerization reactors (R1) and (R2).8. Process according to claim 1 , wherein the copolymer (PPC) has a comonomer content claim 1 , in the range of 0.4 to 3.5 mol %.9. Process according to claim 1 , wherein the copolymer (PPC) has a melt flow rate MFR(230° C.) measured according to ISO 1133 of below 1.5 g/10 min.10. Process according to claim 1 , wherein the copolymer (PPC) has a:(a) a xylene soluble content (XCS) determined at 23° C. according to ISO 6427 of below 20.0 wt. %, and/or(b) a molecular weight distribution (MWD) measured by gel permeation chromatography (GPC) of 1.8 to 20, and/or(c) a weight average molecular weight (Mw) determined by Gel Permeation Chromatography (GPC) of at least 500 kg/mol.11. Process according to claim 1 , wherein the copolymer (PPC) has a melting temperature Tm in the range of 112° C. to 152° C.12. Process according to claim 1 , wherein subsequently to the preparation of said ...

PROCESS

A process for the preparation of a propylene copolymer, preferably a heterophasic propylene copolymer, in a multistage polymerisation process in the presence of a single site catalyst, said process comprising: (I) in a slurry polymerisation step, polymerising propylene and optionally at least one C2-10 alpha olefin comonomer; and subsequently (II) in a gas polymerisation step polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of catalyst and polymer from step (I); (III) in a second gas polymerisation step, polymerising propylene and at least one C2-10 alpha olefin comonomer in the presence of the catalyst and polymer from step (II); wherein said catalyst comprises (i) a metallocene complex of a group (IV) metal, said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron based cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier. 1. A process for the preparation of a propylene copolymer , preferably a heterophasic propylene copolymer , in a multistage polymerisation process in the presence of a single site catalyst , said process comprising:(I) in a slurry polymerisation step, polymerising propylene and optionally at least one C2-10 alpha olefin comonomer; and subsequently(II) in a gas polymerisation step polymerising propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of catalyst and polymer from step (I);(III) in a second gas polymerisation step, polymerising propylene and at least one C2-10 alpha olefin comonomer in the presence of the catalyst and polymer from step (II);wherein said catalyst comprises(i) a metallocene complex of a group (IV) metal, said metallocene comprising at least two cyclopentadienyl type ligands;(ii) a boron based cocatalyst; and(iii) an aluminoxane cocatalyst;said catalyst being in solid form, preferably in solid particulate form, ...

HETEROPHASIC POLYPROPYLENE COMPOSITION WITH IMPROVED BALANCE OF PROPERTIES

The present invention is directed to a heterophasic polypropylene composition having an improved balance of desirable properties, i.e. high stiffness, high toughness, and high transparency. The heterophasic polypropylene composition of the present invention comprises 60.0 to 95.0 wt % of a crystalline propylene homopolymer with a melting temperature Tmeasured by differential scanning calorimetry of higher than 155° C., 5.0 to 20.0 wt % of an elastomeric ethylene-propylene rubber, and at least one polymeric nucleating agent, wherein the crystalline propylene homopolymer (H-PP) and the elastomeric ethylene-propylene rubber (EPR) have been produced in the presence of a single-site catalyst, wherein the heterophasic polypropylene composition is characterized by a soluble fraction determined in 1,2,4-trichlorobenzene at 40° C. in the range of 5.0 to 20.0 wt %, and wherein the soluble fraction has an ethylene in content in the range of 12.0 to 40.0 wt %. The present invention is further directed to a process for the preparation of the heterophasic polypropylene composition comprising polymerizing propylene in at least three polymerization steps in the presence of a single-site catalyst, wherein the at least one polymeric nucleating agent is introduced either as a master batch by a compounding step or via a prepolymerization step prior to the first polymerization step. The present invention is further directed to an article obtained by extrusion of the heterophasic polypropylene composition, and to a packaging article comprising the extruded article. Finally, the present invention is directed to the use of the heterophasic polypropylene composition for the production of extruded articles such as films or sheets. 115-. (canceled)16. A heterophasic polypropylene composition (HECO) comprising a matrix phase (M) and an elastomeric phase dispersed therein , wherein the polypropylene composition comprises{'sub': 'm', '(A) 60.0 to 95.0 wt %, based on the total weight of the ...

LOW MELTING PP HOMOPOLYMER WITH HIGH CONTENT OF REGIOERRORS AND HIGH MOLECULAR WEIGHT

The present invention relates to a polypropylene homopolymer, a process for the preparation of such polypropylene homopolymer and a polypropylene blend comprising such polypropylene homopolymer as well as a pipe, sheet, film, fiber, moulded article or extrusion coating comprising such polypropylene homopolymer or polypropylene blend. 114-. (canceled)15. A polypropylene homopolymer (H-PP1) , having{'sub': 'm', 'a) a melting temperature Tof less than 150° C.,'}{'sup': '13', 'b) 2,1 regio-defects of above 2.0% determined by C-NMR spectroscopy, and'}c) a weight average molecular weight M, of above 100 kg/mol.161. The polypropylene homopolymer (H-PP1) according to claim , havinga) a melting temperature T. of less than 145° C.;and/or{'sup': '13', 'b) 2,1 erythro regio-defects of above 2.0% determined by C-NMR spectroscopy,'}and/or{'sub': 'w', 'c) a weight average molecular weight Mof above 200 kg/mol.'}171. The polypropylene homopolymer (H-PP1) according to claim , having{'sub': 'm', 'a) a melting temperature Tof less than 140° C.;'}and/or{'sup': '13', 'b) 2,1 regio-defects and/or 2,1 erythro regio-defects of above 2.0% determined by C-NMR spectroscopy,'}and/or{'sub': 'w', 'c) a weight average molecular weight Mof above 300 kg/mol.'}181. The polypropylene homopolymer (H-PP1) according to claim , having{'sub': 'm', 'a) a melting temperature Tof from 120 to 142° C.;'}and/or{'sup': '13', 'b) 2,1 regio-defects and/or 2,1 erythro regio-defects are above 2.0 to 3.5% determined by C-NMR spectroscopy,'}and/or{'sub': 'w', 'c) a weight average molecular weight Mof from 300 to 2,000 kg/mol.'}191. The polypropylene homopolymer (H-PP1) according to claim , having{'sup': '13', 'a) a mrrm pentad content of equal or lower than 1.0%, determined by C-NMR spectroscopy;'}and/or{'sup': '13', 'b) 3,1 regio-defects of less than 0.6% determined by C-NMR spectroscopy;'}and/or{'sup': '13', 'c) a total amount of regio-defects of more than 2.0% determined by C-NMR spectroscopy;'}and/or{'sup': '13', ...

PROCESS FOR THE PREPARATION OF COPOLYMERS OF PROPYLENE

A process for the preparation of a copolymer of propylene and ethylene comprising polymerising propylene and ethylene in the gas phase in the presence of a solid particulate catalyst free from an external carrier comprising: (i) a symmetrical complex of formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′C—, —R′C—CR′—, —R′Si—, —R′Si—SiR′—, —R′Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-alkyi, tri(C1-C20-aikyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; Ris a C1-C20 hydrocarbyl radical; m is 2 to 5; Ris a H or C1-C20 hydrocarbyl radical; Ris a hydrogen atom or a C-hydrocarbyl radical; n is 0 to 3; Ris a C1-C20 hydrocarbyl radical and optionally two adjacent Rgroups taken together can form a further mono or multicyclic ring condensed to Ph ring optionally substituted by one or two groups R; and Ris a C1-C10 alkyl radical; and (ii) a cocatalyst, preferably comprising an organometallic compound of a Group 13 metal; wherein the xylene soluble fraction of the propylene ethylene copolymer has an ethylene content of at least 10 wt % and an intrinsic viscosity of at least 1.2 dl/g. 2. A process as claimed in wherein the catalyst used is in solid particulate form free from an external carrier.3. A process as claimed wherein the catalyst is obtainable by a process in which(a) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(b) solid particles are formed by solidifying said dispersed droplets.4. A process as claimed in wherein the catalyst is prepared by obtaining a complex of formula (I) and a cocatalyst;forming a liquid/liquid emulsion system, which comprises a solution of catalyst components (i) and (ii) dispersed in a solvent, and solidifying said dispersed droplets to form solid particles.5. A process as claimed in wherein the ...

PROCESS FOR PRODUCING PROPYLENE COPOLYMERS IN GAS PHASE

A process for the preparation of a hetero-phasic copolymer of propylene and ethylene comprising polymerising propylene and ethylene in the gas phase in the presence of a solid particulate catalyst free from an external carrier comprising: (i) a symmetrical complex of formula (I), wherein M is zirconium or hafnium; each X is a sigma lig- and; L is a divalent bridge selected from —R′C—, —R′C—CR′2-, —R′Si—, —R′Si—SiR′—, —R′Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; Ris a C1-C20 hydrocarbyl radical; Ris a C1-C20 hydrocarbyl radical; Ris a tertiary C4-C20 hydrocarbyl radical; Ris a hydrogen atom or a C-hydrocarbyl radical; n is 0 to 3; Ris a C1-C20 hydrocarbyl radical and optionally two adjacent Rgroups taken together can form a further mono or multi-cyclic ring condensed to Ph ring optionally substituted by one or two groups R; and Ris a C1-C10 alkyl radical and (ii) a cocatalyst, preferably comprising an organometallic compound of a Group 13 metal; wherein the xylene soluble fraction (XS) of the heterophasic copolymer of propylene and ethylene has an intrinsic viscosity of at least 1.5 dl/g and an ethylene content of 10 to 70 wt %. 2. A process as claimed in comprising: (i) a symmetrical complex of formula (I):', 'and (ii) a cocatalyst; and, '(I) in a first stage polymerising propylene and optionally ethylene in the presence of a solid particulate catalyst free from an external carrier comprising(II) in a second subsequent stage polymerising propylene and ethylene in the gas phase in the presence of the product of step (I) and in the presence of the catalyst from step (I);to produce said heterophasic copolymer of propylene and ethylene3. A process as claimed in wherein the catalyst is formed by obtaining a complex of formula (I) and a cocatalyst;forming a liquid/liquid emulsion system, which comprises a solution of catalyst components (i) and (ii) dispersed in a solvent ...

Propylene composition with improved impact resistance at low temperature

Polypropylene composition comprising comonomer units derived from ethylene in an amount of from 9.0 to 52.0 mol-% and comonomer units derived from a higher a-olefin in an amount of from 0.4 to 3.0 mol-%, wherein said polypropylene composition has an amount of xylene cold solubles of at least 30 wt.-%, wherein further the xylene cold soluble fraction has an ethylene content of from 20.0 to 80.0 mol-% and a higher a-olefin content from 0.1 to 1.5 mol-%.

PROCESS FOR PREPARING PROPYLENE/1-BUTENE COPOLYMERS

The present invention relates to an olefm polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount of from 5 to 20 wt % and optionally ethylene-derived comonomer units in an amount of up to 3 wt %, and the Ziegler-Natta catalyst system comprises an external donor of the following formula (I): (R3)(RO)Si(R1). 114-. (canceled)16. The process according to claim 15 , wherein x is 1 claim 15 , R claim 15 , R claim 15 , Rand Rare methyl claim 15 , and Ris hydrogen or Calkyl.17. The process according to claim 15 , wherein the polypropylene does not comprise any monomer units derived from a Calpha-olefin.18. The process according to claim 15 , wherein the polypropylene is a terpolymer.19. The process according to claim 15 , wherein the polypropylene has an amount of xylene solubles XS of 10.0 wt % or less; and/or a melt flow rate MFRof from 1.0 to 100 g/10 min.20. The process according to claim 15 , the Ziegler-Natta catalyst system further comprising:a Ziegler-Natta procatalyst which comprises a titanium compound, andan organometallic cocatalyst which comprises an aluminium compound.21. The process according to claim 15 , wherein the molar ratio of aluminium to Ti in the Ziegler-Natta catalyst system is from 10/1 to 1000/1; and/or the molar ratio of the external donor to Ti in the Ziegler-Natta catalyst system is from 1/1 to 100/1.23. A polypropylene obtained by the process according to .24. A film comprising the polypropylene according to .25. The film according to claim 24 , wherein the film is a blown film claim 24 , a cast film claim 24 , a biaxially oriented film claim 24 , or any combination thereof.26. The film according to claim 24 , wherein the film is a multi-layered biaxially oriented film comprising a sealing layer.27. A process for preparing a film claim 24 , ...

CATALYST

A catalyst in solid particulate form free from an external carrier material comprising

CATALYSTS

A complex of formula (I) wherein M is zirconium or hafnium; each X independently is a sigma ligand; L is a divalent bridge selected from —R′C—, —R′C—CR′—, —R′Si—, —R′Si—SiR′—, —R′Ge—, wherein each R′ is independently a hydrogen atom or a C-C-hydrocarbyl group optionally containing one or more silicon atoms or heteroatoms of Group 14-16 of the periodic table or fluorine atoms, and optionally two R′ groups taken together can form a ring; Rand R are each independently a C-Chydrocarbyl group, —OChydrocarbyl group or —SChydrocarbyl group; Ris a —OChydrocarbyl group or —SChydrocarbyl group, said Rgroup being optionally substituted by one or more halo groups; R is hydrogen or a Chydrocarbyl group; —OChydrocarbyl group or —SChydrocarbyl group; said Chydrocarbyl group being optionally substituted by one or more halo groups; Rand R are each independently a Chydrocarbyl group; —Chydrocarbyl group or —SChydrocarbyl group; each Rand R are independently —CHRwherein Rare each independently H, or a Chydrocarbyl group, optionally containing heteroatoms. 2. The complex as claimed in claim 1 , wherein each X is independently a hydrogen atom claim 1 , a halogen atom claim 1 , a Calkoxy group claim 1 , a Calkyl claim 1 , a phenyl claim 1 , or a benzyl group.3. The complex as claimed in claim 1 , wherein L is dimethylsilyl claim 1 , methylcyclohexylsilyl claim 1 , ethylene claim 1 , or methylene.4. The complex as claimed in claim 1 , wherein Rand R are independently a linear or branched Calkyl group.5. The complex as claimed in claim 1 , wherein Rand R are independently a linear or branched Calkyl group.6. The complex as claimed in claim 1 , wherein Ris a branched Calkyl group claim 1 , and R is a linear Calkyl group or branched Calkyl group.7. The complex as claimed in claim 1 , wherein Ris ZRand R is H or Z′R claim 1 , wherein:Z and Z′ are each independently O or S;{'sup': '3', 'sub': '1-6', 'Ris a Calkyl group; and'}{'sup': '3′', 'sub': '1-6', 'R is a Calkyl group.'}8. The complex as ...

POLYPROPYLENE COMPOSITION COMBINING LOW SEALING INITIATION TEMPERATURE AND HIGH MELTING TEMPERATURE

The invention relates to a polypropylene composition which combines low sealing initiation temperature (SIT) and high melting point (Tm), thus having a broad sealing window. 2. The polypropylene composition according to claim 1 , characterized in that the polypropylene composition has an MFRin the range of 3.0 to 10.0 g/10 min claim 1 , as measured at 230° C. under a load of 2.16 kg according to ISO 1133.3. The polypropylene composition according to claim 1 , characterized in that the polypropylene composition has amount of xylene soluble (XS) in the range of 15 to 40 wt % claim 1 , as determined at 25° C. according ISO 16152; 5edition; 2005-07-01.4. The polypropylene composition according to claim 1 , wherein the composition is obtainable in the presence of a Ziegler-Natta catalyst.5. The polypropylene composition according to claim 1 , wherein the Ziegler-Natta catalyst is free of phthalic compound.6. The polypropylene composition according to characterized in that the propylene polymer fraction PPF1 is a propylene copolymer comprising 1-butene (C) and the propylene polymer fraction PPF2 is a propylene terpolymer comprising ethylene comonomer and 1-butene (C).7. A process for producing the polypropylene composition according to by a sequential polymerisation process comprising at least two reactors connected in series claim 1 , said process comprising the steps:{'sub': 4', '10, 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a) polymerising in a first reactor being a slurry reactor, preferably a loop reactor (R-1), propylene and one comonomer selected from C-Calpha-olefin obtaining a propylene polymer fraction (PPF1), being a propylene copolymer as defined in'}b) transferring the propylene polymer fraction (PPF1) and unreacted comonomers of the reactor (R-1) into a second reactor (R-2) being a first gas-phase reactor-1 (GPR-1),{'sub': 4', '10, 'claim-ref': [{'@idref': 'CLM-00001', 'claim 1'}, {'@idref': 'CLM-00001', 'claim 1'}], 'c) in the gas-phase reactor-1 ( ...

HETEROPHASIC POLYPROPYLENE POLYMER

A heterophasic propylene ethylene copolymer having an MFRof 0.5 to 100 g/10m in and obtained using single site catalysis comprising: (i) a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % ethylene; and (ii) an ethylene propylene rubber (EPR) dispersed in the matrix; said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 20 to 40%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 70 and 90 wt.%; wherein the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer has an intrinsic viscosity (IV) of 3.0 dl/g or more; and wherein the melting enthalpy (AHM) of the heterophasic propylene ethylene copolymer is between 10 and 30 J/g at a temperature of 0 to 130° C. 1. A heterophasic propylene ethylene copolymer having an MFRof 0.5 to 100 g/10 min and obtained using single site catalysis comprising:(i) a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % ethylene; and(ii) an ethylene propylene rubber (EPR) dispersed in the matrix;said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 20 to 40%;wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 70 and 90 wt. %;wherein the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer has an intrinsic viscosity (IV) of 3.0 dl/g or more; andwherein the melting enthalpy (ΔHm) of the heterophasic propylene ethylene copolymer is between 10 and 30 J/g at a temperature of 0 to 130° C.2. A heterophasic copolymer as claimed in which is formed in three steps.3. A heterophasic copolymer as claimed in wherein the matrix component is a homopolymer.4. A heterophasic copolymer as claimed in wherein there is 20 to 35 wt % XS component.5. A heterophasic copolymer as claimed in having an MFRof 0.7 to 60 g/10 min.6. A ...

CATALYST

A catalyst in solid particulate form free from an external carrier material comprising 2. The catalyst of which is obtainable by a process in which(a) a liquid/liquid emulsion system is formed, said liquid/liquid emulsion system comprising a solution of the catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets; and(b) solid particles are formed by solidifying said dispersed droplets.7. A catalyst as claimed in wherein L is dimethylsilyl claim 1 , ethylene or methylene.8. A catalyst as claimed in comprising the complex{'sub': 2', '2', '2', '2, 'sup': 't', 'rac-MeSi[2-Me-4(3,5-BuPh)-Ind]ZrClor'}{'sub': 2', '2', '2', '2, 'sup': 't', 'rac-MeSi[2-Me-4(3,5-BuPh)-Ind]HfCl.'}9. A catalyst as claimed in wherein said cocatalyst is aluminoxane claim 1 , preferably MAO.10. A catalyst as claimed in wherein the two ligands forming the complex are identical.13. A process for the manufacture of a catalyst as claimed in comprising obtaining a (i) complex of formula (I) and (ii) a cocatalyst comprising a compound of a group 13 metal;forming a liquid/liquid emulsion system, which comprises a solution of catalyst components (i) and (ii) dispersed in a solvent, and solidifying said dispersed droplets to form solid particles.14. A process for the polymerisation of at least one olefin comprising polymerising said at least one olefin with the catalyst as claimed in .15. A process as claimed in wherein the process forms an isotactic polypropylene.16. A process as claimed in wherein the catalyst activity in said process is at least 10.0 kg/g(cat)/h. This invention relates to new bisindenyl catalysts, in particular, solid particulate racemic symmetrical metallocene catalysts containing such bisindenyl ligands. The invention also relates to the use of such new bisindenyl metallocene catalysts for the production of polypropylene at excellent catalyst activities to give polypropylene with high molecular weight, and very high melting point even at industrially ...

Catalysts

A catalyst comprising (i) an asymmetric complex of formula (I) wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′ 2 C—, —R′ 2 C—CR′ 2 —, —R′ 2 Si—, —R′ 2 Si—SiR′ 2 —, —R′ 2 Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; R 2 and R 2′ are each independently linear C 1-10 hydrocarbyl; R 5 and R 5′ are each independently hydrogen or a C1-20 hydrocarbyl group; R 6 and R 6′ are each independently hydrogen or a C1-20 hydrocarbyl group; R 7 is hydrogen or a C1-20 hydrocarbyl group or is ZR 3 ; Z is O or S, preferably O; R 3 is a C1-10 hydrocarbyl group; Ar is an aryl or heteroaryl group having up to 20 carbon atoms optionally substituted by one or more groups R 8 ; Ar′ is an aryl or heteroaryl group having up to 20 carbon atoms optionally substituted by one or more groups R 8′ ; and R 8 and R 8′ are each independently is a C1-20 hydrocarbyl group; with the proviso that at least one of R 6 or R 7 is not H; and (ii) a cocatalyst comprising a compound of a group 13 metal, e.g. boron.

PROCESS FOR PREPARING PROPYLENE COPOLYMERS

The present invention relates to an olefin polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount of from 0.5 to 15 wt % and optionally ethylene-derived comonomer units in an amount of up to 3 wt %, and the Ziegler-Natta catalyst system comprises an external donor of the formula (I) 2. The process according to claim 1 , wherein x is 1 claim 1 , y is 2 and z is 1 claim 1 , R claim 1 , R claim 1 , Rare methyl claim 1 , Ris methyl or ethyl and Ris methyl or ethyl.3. The process according to claim 1 , wherein claim 1 , x is 1 claim 1 , y is 3 claim 1 , z=0 claim 1 , R claim 1 , Rand Rare methyl and Ris methyl.4. The process according to claim 1 , wherein the polypropylene does not comprise any monomer units derived from a Calpha-olefin.5. The process according to claim 1 , wherein the amount of 1-butene-derived comonomer units in the polypropylene is 1 to 12 wt %.6. The process according to claim 1 , wherein the polypropylene is a 1-propylene-1-butene-ethylene terpolymer claim 1 , wherein the 1-butene content is 1 to 12 wt % claim 1 , and ethylene content is 0.5 to 2.5 wt %.7. The process according to claim 1 , wherein the MFRof the propylene polymer is in the range of 0.5 to 100 g/10 min.8. The process according to claim 1 , wherein the process is operated in liquid phase or by mixed liquid-gas techniques.9. The process according to claim 1 , wherein the Ziegler-Natta catalyst system comprises:a Ziegler-Natta procatalyst comprising a titanium and a magnesium compound, andan organometallic cocatalyst comprising an aluminum compound.10. The process according to claim 1 , wherein the molar ratio of aluminum to Ti in the Ziegler-Natta catalyst system is from 10 to 1000; and/or the molar ratio of the external donor to Ti in the Ziegler-Natta catalyst system is from 1 to 100. ...

Nucleated c3c4 copolymers

A propylene copolymer composition comprising A) a propylene butylene copolymer which is —free of phthalicacid esters as well as decomposition products thereof; —obtained by a Ziegler-Natta catalyst and B) at least one α-nucleating agent, the propylene copolymer composition having —a MFR (2.16 kg/210° C.) in the range of 2 to 100 g/10 min —a melting point Tm(1) of less than 140° C. —a melting point Tm(2) of at least 150° C., said Tm(2) being associated with more than 75% of the total melting enthalpy and whereby the propylene copolymer —has monomer units derived from a) propylenein an amount of 90.0-98.0 mol.-% b) butylenein an amount of 2.0-10.0 mol.-% with respect to the total weight of the propylene butylene copolymer —an isotacticity mm % as determined by 13C NiNMR spectroscopy of below 99.0%; and —a Koenig-B parameter with respect to butylene as determined by 13C NMR spectroscopy of more than 0.98.

Catalisador e processo para a polimerização de olefinas

Multistep process for the (co)polymerization of olefins

A multistep process for the polymerization of one or more olefins comprising a first step of polymerizing one or more of said olefins in the presence of a catalyst of the Ziegler-Natta type, a step wherein the polymer obtained in the first step is contacted with a catalyst system comprising an half-sandwich metallocene compound, followed by a second polymerization step. The amount of homo- or copolymer of olefins produced in the first polymerization step is between 10% to 90% by weight of the total amount of polymer produced.

METHOD FOR PRODUCING AN ETHYLENIC COPOLYMERISAT

Catalysts for the polymerization of olefins

Copolimeri amorfi dell'etilene con alfa-olefine e procedimento per la loro preparazione

COPOLIMERI AMORFI DELL'ETILENE CON ALFA-OLEFINE, ED EVENTUALMENTE CON QUANTITA' MINORI DI POLIENI, HANNO LE SEGUENTI CARATTERISTICHE:(A) CIL CONTENUTO % MOLI DI ?-OLEFINA NEL COPOLIMERO (%?) E IL RAPPORTO TRA LA QUANTITA' % DELLE DIADI DELL'?-OLEFINA E IL CONTENUTO % IN MOLI DI ?-OLEFINA NEL COPOLIMERO (%??/%?) SODDISFANO LA SEGUENTE RELAZIONE:(%?) - 250 (%??/%?) ? 10(B) MENO DEL 2% DEI GRUPPI CH2 IN CATENA SONO IN SEQUENZE (CH2) n' DOVE n E' UN NUMERO PARI.QUESTI COPOLIMERI SONO OTTENIBILI OPERANDO IN PRESENZA DI PARTICOLARI CATALIZZATORI METALLOCENICI AVENTI DUE GRUPPI FLUORENILICI COLLEGATI TRA LORO MEDIANTE UN GRUPPO A PONTE.

Procedimento per la preparazione di polimeri dell'etilene e prodotti ottenuti

Supported catalysts for the polymerization of olefins

Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.

Bridged metallocenes, preparation, use in catalytic systems

Metallocene compounds having the general formula (I): R 1 are hydrocarbon groups, R 2 are hydrogen or hydrocarbon groups; M is a transition metal of group 3, 4, 5, 6 or to the lanthanide or actinide groups in the Periodic Table; M′ is a transition metal selected from those belonging to group 3 or to the lanthanide or actinide groups in the Periodic Table; X is a monoanionic ligand; p is an integer of from 0 to 3, being equal to the oxidation state of M minus two; q is an integer from 3 to 5; and n is an integer from 1 to 4, when the six-membered rings of formula (Ia) are not perhydrated, and is an integer of from 0 to 4, when the six-membered rings of formula (Ia) are perhydrated as well as in the compound of formula (Ib).

Process for preparing 1-butene polymers

Propylene composition with improved impact resistance at low temperature

Polypropylene composition comprising comonomer units derived from ethylene in an amount of from 9.0 to 52.0 mol-% and comonomer units derived from a higher a-olefin in an amount of from 0.4 to 3.0 mol-%, wherein said polypropylene composition has an amount of xylene cold solubles of at least 30 wt.-%, wherein further the xylene cold soluble fraction has an ethylene content of from 20.0 to 80.0 mol-% and a higher a-olefin content from 0.1 to 1.5 mol-%.

Process for preparing propylene/1-butene copolymers

The present invention relates to an olefin polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount of from 5 to 20 wt % and optionally ethylene-derived comonomer units in an amount of up to 3 wt %, and the Ziegler-Natta catalyst system comprises an external donor of the following formula (I): (R3)z(R2O)ySi(R1)x.

Polypropylene composition for automotive interior applications

Polypropylene composition comprising a heterophasic propylene copolymer and a mineral filler, wherein said heterophasic propylene copolymer has a melting temperature in the range of 140 to 155° C., a xylene cold soluble content in the range of 20 to 35 wt.-% and a comonomer content of the xylene cold soluble fraction in the range of 18 to 95 wt.-%, wherein further the weight ratio between heterophasic propylene copolymer and the mineral filler is in the range of 2/1 to 4/1.

Low melting PP homopolymer with high content of regioerrors and high molecular weight

Disclosed is a polypropylene homopolymer having a melting temperature Tm of less than 150° C., 2,1 regio-defects of above 2.0% determined by 13C-NMR spectroscopy, and a weight average molecular weight Mw of above 100 kg/mol. Also disclosed are a process for the preparation of the homopolymer and a polypropylene blend containing the homopolymer. Further disclosed are a pipe, sheet, film, fiber, moulded article, and extrusion coating made from the homopolymer or polypropylene blend.

Atactic polypropylene

Amorphous propylene polymers are disclosed having the following characteristics: (a) intrinsic viscosity η!>1 dl/g; (b) % (r)-% (m)>0, wherein % (r) is the % of syndiotactic diads and % (m) is the % of isotactic diads; (c) less than 2% of the CH 2 groups contained in sequences (CH 2 ) n , with n≧2; (d) Bernoullianity index (B)=1±0.2; (e) melting enthalpy value lower than 10 J/g; and (f) Mw/Mn being less than 5.

Catalyst for olefin polymerization

Catalysts for the polymerization of olefins, comprising the product of the reaction between: A) a cyclopentadienyl compound of Ti, Zr or Hf; B) an alumoxane compound of formula: <CHEM> in which R<1>, R<2>, R<3>, R<4>, the same or different from each other, are alkyl, alkenyl or alkylaryl radicals having 2 to 20 carbon atoms. y

Copolimeri dell'etilene e procedimento per la preparazione di polimeri dell'etilene

SI PREPARANO COPOLIMERI DELL'ETILENE CON COMONOMERI SCELTI TRA:(a) ? - OLEFINE;(b) CICLOOLEFINE; E (c) POLIENI AVENTI CONTENUTO DI UNITA' ETILENICHE COMPRESO TRA 80 E 99% IN MOLI, CONTENUTO DI UNITA' DERIVANTI DA COMONOMERI ? - OLEFINICI, CICLOOLEFINICI E/O POLIENICI COMPRESO TRA 1 E 20% IN MOLI, CARATTERIZZATO DAL FATTO CHE:(a) ALL'ANALISI TREF (TEMPERATURE RISING ELUTION PRACTIONATION) UNA QUANTITA' UGUALE AD ALMENO IL 90% IN PESO DEL COPOLIMERO VIENE ELUITO IN UN INTERVALLO DI TEMPERATURE INFERIORE A 50°C, E (b) Mw/Mr1 1, DOVE E' IL PESO MOLECOLARE IN PESO E Mn E' IL PESO MOLECOLARE MEDIO IN NUMERO, ENTRAMBI DETERMINATI MEDIANTE GPC.

Ethylene copolymers, process for the preparation of ethylene-based polymers and catalyst system used therein

Ethylene copolymers are prepared with comonomers selected from: (a) alpha -olefins, (b) cycloolefins and (c) polyenes, with a content of ethylene units of between 80 and 99 mol %, a content of units derived from alpha -olefin, cycloolefin and/or polyene comonomers of between 1 and 20 mol %, characterized in that: (a) in TREF (Temperature Rising Elution Fractionation) analysis, a quantity equal to at least 90% by weight of the copolymer is eluted within a temperature interval of less than 50 DEG C., and (b) Mw/Mn>3, where Mw is the weight-average molecular weight and Mn is the number-average molecular weight, both determined by means of GPC.

Ethylene copolymers, process for the preparation of ethylene-based polymers and catalyst system used therein

Ethylene copolymers are prepared with comonomers selected from: (a) α-olefins, (b) cycloolefins and (c) polyenes, with a content of ethylene units of between 80 and 99 mol %, a content of units derived from α-olefin, cycloolefin and/or polyene comonomers of between 1 and 20 mol %, characterized in that: (a) in TREF (Temperature Rising Elution Fractionation) analysis, a quantity equal to at least 90% by weight of the copolymer is eluted within a temperature interval of less than 50° C., and (b) M w /M n >3, where M w is the weight-average molecular weight and M n is the number-average molecular weight, both determined by means of GPC.

Catalysts for the polymerization of olefins

Catalysts for the polymerization of olefins, comprising the product of the reaction between: A) a cyclopentadienyl compound of Ti, Zr or Hf; B) an alumoxane compound of formula: ##STR1## in which R 1 , R 2 , R 3 , R 4 , the same or different from each other, are alkyl, alkenyl or alkylaryl radicals having 2 to 20 carbon atoms.

Process for preparing an ethylenic copolymer

A process for the preparation of an ethylene/1-butene or ethylene/1-butene/diene elastomer by slurry polymerization of the monomers in a polymerization medium consisting mainly of an excess of the 1-butene maintained in liquid form, performed in the presence of a catalyst based on a metallocene compound of Ti, Zr or Hf. This process is exempt from occurrence of reactor fouling and enables the recovery of the polymer without the use of steam as a stripping agent.

Catalyst system for the polymerization of olefins

An organometallic compound obtainable by contacting a) a compound having the following formula (I): wherein R a , R b , R c and R d equal to or different from each other are hydrocarbon groups b) a Lewis acid of formula (II) MtR 1 3   (II) wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements (IUPAC); R 1 , equal to or different from each other, are selected from the group consisting of halogen, halogenated C 6 -C 20 aryl and halogenated C 7 -C 20 alkylaryl groups; two R 1 groups can also form with the metal Mt one condensed ring. These compounds are useful as cocatalysts for polymerizing olefins.

Catalyst system for the polymerization of olefins

An organometallic compound obtainable by contacting: a compound having the following formula (I), wherein: Ra is a hydrocarbon radical; Rb, R° and Rd, are hydrogen atoms, halogen atoms, or hydrocarbon radicals; with a Lewis acid of formula (II) MtR13 (II) wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements; Rl are selected from the group consisting of halogen atoms, halogenated C6-C20 aryl and halogenated C7-C20 alkylaryl groups.

Process for producing substantially amorphous propylene-based polymers

A process for producing substantially amorphous propylene (co)polymers, comprising contacting propylene optionally in the presence of one or more olefins under polymerization conditions with a catalyst system comprising: A) a half sandwich titanium complex wherein the cyclopentadienyl is substituted with one or two heterocyclic rings, according to formula (I): cf formula (I) in claim 1: wherein X is N or P; Z is C, Si or Ge; Y 1 is an atom selected from the group consisting of NR 7 , O, PR 7 or S; Y 2 is selected from the group consisting of CR 8 or Y 1 and m is 0 or 1 and B) an activating cocatalyst. The above titanium complex and the ligand useful as intermediates in their synthesis are also described.

Process for the preparation of titanium complexes

A new process is disclosed, particularly simple, convenient and practical, for the direct synthesis of titanium complexes of the formula (I): (D)(ZR 1 m ) n (A)TiL p X q , wherein (ZR 1 m ) n is a divalent group bridging D and A; D is a delocalized π-bonded moiety, which is bound in an η 5 bonding mode to Ti, and is preferably a Cp moiety; A is —O—, —S—, —N(R 2 )— or —P(R 2 )—, wherein R 2 is hydrogen, alkyl, cycloalayl, aryl, alkylaryl or arylalkl; L are monoanionic sigma ligands selected from alkyl, cycloalkyl, aryl, alkylaryl and arylalkyl groups; m is 1 or 2; n is 1-3; p is 1 or 2, q is 0 or 1 and p+q=2; said process comprises reacting a ligand of formula (H—D)(ZR 1 m ) n (A—H) with about 1 molar equivalent of TiX 4 in the presence of about (2+p) molar equivalent of L j B or LMgX wherein X is halogen or —OR′, B is an alkaline or alkaline-earth metal, and j is 1 or 2.

Catalyst system for the polymerization of olefins

A salt of formula (I) [HE o R 1 3 ] + [T 1 T 2 ] −   (I) wherein E o is a nitrogen or phosphorous atom; R 1 is hydrocarbon radical; T 1 is a Lewis acid that forms a complex with T 2 , and T 2 is a substituted pyrrolyl radical of formula (III) These salts can be used as cocatalyst in a process for the polymerization of alpha-olefins in conjunction with a transition metal organometallic compound.

Process for the polymerization of olefins

Process for the polymerization of olefins comprising contacting olefins under polymerization conditions in the presence of a catalyst system comprising the product obtained by contacting: (A) at least one transition metal organometallic compound, pyrolidyl bis(η-cyclopentadienyl)methylzirconium being excluded, and (B) an organometallic compound obtained by contacting: (a) a Lewis base having formula (I):  wherein R a , R b , R c and R d , equal to or different from each other, are selected from the group consisting of hydrogen, halogen, linear or branched, saturated or unsaturated, C 1 -C 10 alkyl, C 6 -C 20 aryl, C 7 -C 20 arylalkyl and C 7 -C 20 alkylaryl groups; with b) a Lewis acid of formula (II) MtR 1 3   (II)  wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements; R 1 , equal to or different from each other, are selected from the group consisting of halogen, halogenated C 6 -C 20 aryl and halogenated C 7 -C 20 alkylaryl groups; and (C) optionally an alkylating agent.

Catalyst system for the polymerization of olefins

A catalyst system for the polymerization of olefins comprising the product obtained by contacting: (A) at least one transition metal organometallic compound, pyrrolidyl bis(η-cyclopentadienyl)methylzirconium being excluded, and (B) an organometallic compound obtained by contacting: a) a Lewis base having formula (I):  wherein R a , R b , R c and R d , equal to or different from each other, are selected from the group consisting of hydrogen, halogen, linear or branched, saturated or unsaturated, C 1 -C 10 alkyl, C 6 -C 20 aryl, C 7 -C 20 arylalkyl and C 7 -C 20 alkylaryl groups; with b) a Lewis acid of formula (II) MtR 1 3   (II)  wherein Mt is a metal belonging to Group 13 of the Periodic Table of th Elements; R 1 , equal to or different from each other, are selected from the group consisting of halogen, halogenated C 6 -C 20 aryl and halogenated C 7 -C 20 alkylaryl groups; and (C) optionally an alkylating agent.

Catalyst system for the polymerization of olefins

An organometallic compound obtainable by contacting: a compound having the following formula (I), wherein: R a is a hydrocarbon radical; R b , R c and R d , are hydrogen atoms, halogen atoms, or hydrocarbon radicals; with a Lewis acid of formula (II) MtR 1 3 (II) wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements; R 1 are selected from the group consisting of halogen atoms, halogenated C 6 –C 20 aryl and halogenated C 7 –C 20 alkylaryl groups

Elastomeric copolymers of ethylene with at least one alpha-olefin

Homo- and copolymers of ethylene endowed with very high molecular weights and narrow molecular weight distributions are obtainable by carrying out the polymerization reaction in the presence of a metallocene-based catalyst wherein the metallocene is stereorigid and it is in its meso isomeric form.

Supported catalysts for the polymerization of olefins

Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.

Process

Process

Un proceso para la preparación de un copolímero de propileno, preferentemente un copolímero de propileno heterofásico, en un proceso de polimerización de multi-etapa en presencia de un catalizador de sitio único, comprendiendo dicho proceso: (I) en una etapa de polimerización en suspensión, polimerizar propileno y opcionalmente al menos un comonómero de alfa olefina C2-10; y posteriormente (II) en una etapa de polimerización de gas, polimerizar propileno y opcionalmente al menos un comonómero de alfa olefina C2-10, en presencia de un catalizador y un polímero de la etapa (I); (III) en una segunda etapa de polimerización de gas, polimerizar propileno y al menos un comonómero de alfa-olefina C2-10 en presencia del catalizador y el polímero de la etapa (II); en el que dicho catalizador comprende (i) un complejo de metaloceno de un metal del grupo (IV), comprendiendo dicho metaloceno al menos dos ligandos de tipo ciclopentadienilo; (ii) un cocatalizador basado en boro; y (iii) un cocatalizador de aluminoxano; estando dicho catalizador en forma sólida, preferentemente en forma de partículas sólidas, y estando libre de un portador externo. A process for the preparation of a propylene copolymer, preferably a heterophasic propylene copolymer, in a multi-stage polymerization process in the presence of a single-site catalyst, said process comprising: (I) in a suspension polymerization stage , polymerizing propylene and optionally at least one C2-10 alpha olefin comonomer; and subsequently (II) in a gas polymerization step, polymerizing propylene and optionally at least one C2-10 alpha olefin comonomer, in the presence of a catalyst and a polymer from step (I); (III) in a second gas polymerization step, polymerizing propylene and at least one C2-10 alpha-olefin comonomer in the presence of the catalyst and polymer from step (II); wherein said catalyst comprises (i) a metallocene complex of a metal from group (IV), said metallocene comprising at least two cyclopentadienyl-type ...

Propylene composition with improved impact resistance at low temperature

Polypropylene composition comprising comonomer units derived from ethylene in an amount of from 9.0 to 52.0 mol-% and comonomer units derived from a higher a-olefin in an amount of from 0.4 to 3.0 mol-%, wherein said polypropylene composition has an amount of xylene cold solubles of at least 30 wt.-%, wherein further the xylene cold soluble fraction has an ethylene content of from 20.0 to 80.0 mol-% and a higher a-olefin content from 0.1 to 1.5 mol-%.

Composición de polipropileno para aplicaciones en interiores de automóviles

Composición de polipropileno que comprende (a) un copolímero de propileno heterofásico (HECO) que comprende (a1) una matriz (M) que es un homopolímero de propileno (H-PP) o copolímero de propileno (R-PP) y (a2) un copolímero de propileno elastomérico (EC) dispersado en dicha matriz (M), y (b) un relleno mineral (F), en donde dicho copolímero de propileno heterofásico (HECO) tiene (i) una temperatura de fusión determinada por calorimetría de barrido diferencial (DSC) en el intervalo de 140 a 155 °C, (ii) un contenido de solubles en xileno frío (XCS) en el intervalo de 20 a 35% en peso, (iii) un contenido de comonómero de la fracción de solubles en xileno frío (XCS) en el intervalo de 18 a 95% en peso, en donde además la relación en peso entre el copolímero de propileno heterofásico (HECO) y el relleno mineral (F) [(HECO)/(F)] está en el intervalo de 2/1 a menos de 4/1.

Supported catalysts for the polymerization of olefins

Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.

Supported catalysts for the polymerization of olefins

Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.

Supported catalysts for the polymerization of olefins

Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.

Process for the preparation of amorphous polymers of propylene

It is possible to prepare substantially amorphous polymers of propylene endowed with high molecular weights, operating at temperatures of industrial interest, by carrying out the polymerization reaction of propylene in the presence of metallocene catalysts comprising particular bis-indenyl or bis-4,5,6,7-tetrahydroindenyl compounds substituted in the 2-position on the indenyl or tetrahydroindenyl groups.

Process for the preparation of metallocene compounds

A new process is disclosed, particularly simple, convenient and practical, for the direct synthesis of metallocenes of formula (I): (CP)(ZR 1 m ) n (A) r ML p L′ q wherein (ZR 1 m ) n is a divalent group bridging Cp and A; Cp is a substituted or unsubstituted cyclopentadieryl group; A is —O—, —S—, —N(R 2 )—, wherein R 2 is hydrogen, alkyl, cycloalkyl aryl, alkylaryl or arylalkyl, or A has the same meaning of Cp; M is a transition metal belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups; L is a monoanionic sigma ligand, such as alkyl, cycloalkyl, aryl, alkylaryl or arylalkyl, optionally containing Si or Ge; L′ is halogen or —OR 5 , R 5 being a hydrocarbon radical; m is 1 or 2; n is 0-4; r is 0 or 1; p is 1-3; q is 0-2. Said process comprises reacting the ligand (Y—Cp)(ZR 1 m ) n (A—Y) r , wherein Y is a suitable leaving group, with at least 1 molar equivalent of ML′ s in the presence of at least (1+r+p) molar equivalents of L j B or LMgL′, wherein B is an alkaline or alkaline-earth metal, s ranges from 3 to 6, and j is 1 or 2.

Process for the preparation of substantially amorphous alpha-olefin polymers and compositions containing them and process for the preparation of bridged ligand

Amorphous polymers of alpha-olefins, particularly of propylene, having high molecular weights and narrow molecular weight distributions, in which the isotactic sequences are more abundant than the syndiotactic ones, can be obtained in high yields at temperatures of industrial interest by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3-position on the indenyl groups. The obtained amorphous polymers are particularly useful for the preparation of miscible compositions with substantially isotactic alpha-olefins.

Process for the preparation of copolymers of ethylene with alpha-olefins

Ethylene based copolymers having high molecular weights, narrow molecular weight distributions, and a very good homogeneous distribution of the comonomer units can be obtained in high yields at temperatures of industrial interest, by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3-position on the indenyl groups.

Thermoplastic compositions of isotactic propylene polymers and flexible propylene polymers having reduced isotacticity and a process for the preparation thereof

Described is a thermoplastic composition including: (A) 10 to 99% by weight of a propylene polymer optionally containing from 0.1 to 5% by moles of units derived from an olefin of the formula CH 2 ═CHR, R being hydrogen, a C 2 -C 20 -alkyl or a C 6 -C 12 -aryl group, having the following characteristics: 50<isotactic triads (mm)<85; melting point (Tm) from 60° C. to 120° C., and (B) 1 to 90% by weight of a propylene polymer having an essentially isotactic structure, optionally containing from 0.1 to 5% by moles of units derived from an olefin of the formula CH 2 ═CHR, R being hydrogen, a C 2 -C 20 -alkyl or a C 6 -C 12 -aryl group, which has a melting point (Tm) higher than 153° C. Also described is a process for the preparation of this thermoplastic composition.

Process for the polymerization of 1-butene

A process for polymerizing I-butene comprising the step of contacting under polymerization “conditions 1-butene and optionally from 0 to 20% by mol of an alpha olefin with a catalyst system obtainable by contacting a bridged metallocene compound of formula (I) wherein R 1 and R 2 are an hydrocarbon radical A is a carbon atom, a germanium atom or a silicon atom; m is 1, 2; M is a metal of group 4 of the Periodic Table of the Elements; X, is hydrogen, a halogen atom, or a group R, OR, OS0 2 CF 2 , OCOR, SR, NR 2 or PR 2 , wherein the substituents R are hydrocarbon radical; L is a moiety of formula (IIa), (IIb), or (IIc) wherein T is an oxygen (0) or sulphur (S) atom or a CH2 group; and R 3 , R 4 , R 5 , R 6 , R 7 , R 8 are hydrogen or hydrocarbon radicals; one or more alumoxanes or compounds able to form an alkylmetallocene cation; and optionally an organo aluminum compound.

Hetero cyclic metallocene compounds and use thereof in catalyst system for producing olefin polymers

A metallocene compound of general formula (I): LGZMXp, wherein L is a divalent group, Z is a moiety of formula (II), wherein R 3 and R 4 are selected from hydrogen and hydrocarbon groups; A and B are selected from S, O or CR 5 , wherein R 5 is selected from hydrogen and hydrocarbon groups, either A or B being different from CR 5 ; G is a moiety of formula (III), wherein R 6 , R 7 , R 8 and R 9 are selected from hydrogen and hydrocarbon groups, M is an atom of a transition metal, X is selected from a halogen atom, a R 10 , OR 10 , OSO 2 CF 3 , OCOR 10 , SR 10 , NR 10 2 or PR 10 2 group, wherein the substituents R 10 is hydrogen and a hydrocarbon group; p is an integer from 0 to 3.

Process for polymerizing 1-butene and 1-butene polymers

A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH 2 ═CHT wherein T is a C 3 –C 10 alkyl group, in the presence of a catalyst system obtainable by contacting a metallocene compound having C 1 symmetry with an alumoxane and/or a compound capable of forming an alkyl metallocene cation.

Metallocenes, use in catalyst system for producing olefin polymers

A metallocene compound of formula (I): wherein M is zirconium, titanium and hafnium; X is a hydrogen atom, a halogen atom or a hydrocarbon radical; R 1 is a linear C 1 -C 20 -alkyl radical; R 2 is a hydrogen atom or hydrocarbon R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 , are hydrogen atoms or hydrocarbon radicals, A is a sulphur (S) atom or an oxygen (O) atom; Q is a radical of formula (II), (III) or (IV) being bonded to the indenyl at the position indicated by the symbol *; (II), (III), (IV) wherein T 1 is a sulphur atom, an oxygen (O) atom or a NR; R 9 , R 10 and R 11 are hydrogen atoms or hydrocarbon radicals; T 2 , T 3 , T 4 , T 5 , and T 6 are carbon atoms (C) or nitrogen atoms (N); m 1 , m 2 , m 3 , m 4 and m 5 are 0 or 1; R 12 , R 13 , R 14 , R 15 and R 16 are hydrogen atoms or hydrocarbon radicals with the provisos that at least one of R 12 , R 13 , R 14 , R 15 and R 16 is different from hydrogen atoms, and that no more than two of T 2 , T 3 , T 4 , T 5 and T 6 are nitrogen atoms.

Multistep process for the (co) polymerization of olefins

A multistep process for the polymerization of one or more olefins comprising a first step of polymerizing one or more of said olefins in the presence of a catalyst of the Ziegler-Natta type, a step wherein the polymer obtained in the first step is contacted with a catalyst system comprising an half-sandwich metallocene compound, followed by a second polymerization step. The amount of homo- or copolymer of olefins produced in the first polymerization step is between 10% to 90% by weight of the total amount of polymer produced.

Process for polymerizing 1-butene

A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH 2 ═CHT wherein T is a C 3 -C 10 alkyl group, in the presence of a catalyst system obtainable by contacting a metallocene compound of formula (I) Wherein M is an atom of a transition metal; X is a hydrogen atom, a halogen atoms or a hydrocarbon group; R 1 , R 2 , R 5 , R 6 , R 7 , R 8 and R 9 are hydrogen atoms or hydrocarbon groups; with the proviso that at least one of R 6 or R 7 is a C 1 -C 20 alkyl group; R 3 and R 4 are C 1 -C 20 alkyl groups; and an alumoxane and/or a compound capable of forming an alkyl metallocene cation

Process for the polymerization of 1-butene

A process for polymerizing 1-butene comprising the step of contacting under polymerization conditions 1-butene and optionally from 0 to 20% by mol of an alpha olefin with a catalyst system obtainable by contacting a bridget metallocene compound of formula (I) wherein R1 and R2 are an hydrocarbon radical A is a carbon atom, a germanium atom or a silicon atom; m is 1, 2; M is a metal of group 4 of the Periodic Table of the Elements; X, is hydrogen, a halogen atom, or a group R, OR, OSO2CF3, OCOR, SR, NR2 or PR2, wherein the substituents R are hydrocarbon radical; L is a moiety of formula (IIa) or (IIb) wherein T is an oxigen (O) or sulphur (S) atom or a CH2 group; and R3 and R4 are hydrogen atoms or hydrocarbon radicals; one or more alumoxanes or compounds able to form an alkylmetallocene cation; and optionally an organo aluminium compound.

Process for the preparation of 1-butene/propylene copolymers

A solution polymerization process for obtaining isotactic, crystalline or crystallizable 1-butene/propylene polymers comprising contacting under polymerization conditions at a temperature ranging from 50° C. to 90° C. 1-butene and propylene in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound; b) an alumoxane or a compound capable of forming an alkyl metallocene cation; and optionally c) an organo aluminum compound; wherein the polymerization medium consists of a mixture of 1-butene and propylene wherein the content of propylene in the liquid phase ranges from 1% to 60% by weight.

1-butene polymer and process for the preparation thereof

A 1-butene polymer optionally containing from 0 to 30% by mol of derived units of ethylene, propylene or alpha-olefin of formula CH2═CHZ, wherein Z is a C 3 -C 20 linear or branched alkyl radical, having the following features: a) distribution of molecular weight (Mw/Mn) lower than 4; b) Melt flow rate (MFR) measured according to ISO 1133 (190° C., 2.16 kg); c) Intrinsic viscosity (IV) measured in tetrahydronaftalene (THN) at 135° C. lower than 0.8 dl/g; d) melting point higher than 100° C.; e) isotactic pentads (mmmm) measured with 13 C-NMR operating at 100.61 MHz higher than 90%; f) 4,1 insertions not detectable at a C 13 -NMR operating at 100.61 MHz; and g) a yellowness index lower than 0.

1-butene copolymers and process for preparing them

A process comprising contacting 1-butene and one or more alpha-olefins under polymerization conditions in the presence of a catalyst system obtainable by contacting: (A) a metallocene compound of formula (I) wherein: M is an atom of a transition metal; p is an integer from 0 to 3; X, same or different, are hydrogen atoms, halogen atoms, or an hydrocarbon group; L is a divalent bridging group; R 1 and R 3 are hydrocarbon groups; R 2 and R 4 are hydrogen atoms or hydrocarbon groups; T 1 and T 2 , equal to or different from each other are a moiety of formula (II), (III) or (IV): wherein: R 5 , R 6 , R 7 , R 8 and R 9 , equal to or different from each other, are hydrogen or hydrocarbon groups; and (B) an alumoxane or a compound able to form an alkylmetallocene cation.