Hydrophilic adhesive compositions for delivery of herbal medicines

Method for reconstructing non-convex compression congnitive image based on evolution multi-target optimization

The invention relates to a method for reconstructing a non-convex compression congnitive image based on evolution multi-target optimization. The method is used for reconstructing a medical image and a natural image. The invention discloses a segmentation break-apart compression sampling method, the shortcoming that some image blocks are not sparse or weakly sparse in the segmentation compression congnitive reconstruction technology in the prior art is overcome, and the quality of a reconstructed image is improved. Restricted single target optimization is converted into multi-target optimization enabling the sparseness to also serve as an optimization target, and compression congnitive optimization reconstruction method based on a wavelet domain is achieved by utilizing an evolution multi-target optimization thought for the images, the shortcoming that the sparseness is hard to determine in the existing compression cognitive reconstruction technology is overcome, and the quality of the reconstructed ...

K-SVD and sparse representation based polarization SAR (synthetic aperture radar) image classification method

The invention discloses a K-SVD and sparse representation based polarization SAR (synthetic aperture radar) image classification method and solves problems that the amount of classification categories is limited by an existing method and polarization characteristic information is not fully utilized. The method includes the steps of 1), calculating a covariance matrix by taking a polarization coherent matrix of a polarization SAR as input data; 2), extracting the coherent matrix, the covariance matrix, Ps, Pd, Pv, H, and alpha from each pixel to form a characteristic matrix; 3), selecting training samples from actual terrain distribution to form an initial dictionary; 4), training the initial dictionary with a K-SVD algorithm to obtain a training dictionary; 5), representing the characteristic matrix with the training dictionary and calculating the sparse coefficient with an OMP algorithm; 6), restructuring the characteristic matrix with the calculated sparse coefficient, and determining ...

Polarized SAR image classification method based on K mean value and depth SVM

The invention discloses a polarized SAR image classification method based on a K mean value and a depth SVM. The polarized SAR image classification method mainly solves the problems of low classification accuracy and classification efficiency of an existing polarized synthetic aperture radar (SAR) classification method. The polarized SAR image classification method comprises the steps of (1) inputting images; (2) performing filtering; (3) extracting features; (4) establishing a misclassification set; (5) establishing a nearest neighbor sample set; (6) establishing a final training set; (7) establishing a depth support vector machine classifier; (8) performing classification; (9) calculating accuracy. By means of the polarized SAR image classification method, polarized SAR images can be classified accurately, the classification time of the polarized SAR images can be shortened effectively, and target recognition and tracking of the polarized SAR images are achieved.

SCHMELZKLEBSTOFFE AUS BLOCKCOPOLYMEREN, VERFAHREN ZU IHRER HERSTELLUNG UND GEGENSTÄNDE DARAUS

SCHMELZPROZESSIERBARE BLOCK COPOLYMER COMPOSITION, PROCEDURE FOR THE PRODUCTION AND ARTICLE FROM IT

SURFACE ENERGY-POOR ADHESIVE

INTERLACED POLYMERS MICRO PARTICLE

PRESSURE-SENSITIVE ADHESIVES AND STAR BLOCK POLYMERS AND ACRYLIC POLYMERS CONTAINING ARTICLES

PROCEDURES FOR THE USE OF LATENT ONE, OVER TACKIFIZIERTEN ADHESIVES

Adhesive for bonding to low surface energy surfaces

Block copolymer hot-melt processable adhesives, methods of their preparation, and articles therefrom

MULTI-ARM BLOCK COPOLYMER, AND PRESSURE SENSITIVE ADHESIVE AND TAPE EMPLOYING A MULTI-ARM ELASTOMERIC BLOCK COPOLYMER

The present invention provides a novel multi-arm block copolymer, a novel pressure-sensitive adhesive made from a multi-arm elastomeric block copolymer, and a novel tape made therefrom. The multi-arm block copolymer has the general structure (A-B)m Y(C-D)n wherein A, B, C and D are polymer segments; Y is a residue of a multifunctional coupling agent; and m and n ar e the number of arms, where m and n are greater than 0 and the sum of m plus n is at least 3. A comprises a random copolymer of a monoalkenylarene and a conjugated diene; B and C comprise either a homopolymer of a conjugated diene or a polymer of two or more conjugated dienes; D comprises either a homopolymer of a monoalkenylarene or a copolymer of a monoalkenylarene and a conjugated diene wherein the Tg of D is greater than the Tg of A; and the weight percent of monoalkenylarene in the block copolymer is 40% or less . The pressure-sensitive adhesive of the invention comprises 100 parts by weig ht of either the previously described ...

Compressed sensing signal recovery method based on orthogonal matching pursuit evolution

The invention discloses a signal recovery method based on orthogonal matching pursuit evolution, mainly to solve the problems that the traditional pursuit algorithm in compressed sensing is over greedy, poor in backtracking ability and low in recovery accuracy. According to the technical scheme, an evolutionary computation frame is introduced to compressed sensing signal recovery; an atom selection problem is converted into a swarm optimizing process based on heuristic search; in combination with correlation between observation errors and atoms in the traditional greedy pursuit algorithm, an activation function is defined to measure the possibility of each atom to be selected; weak-greed crossover and mutation operators are designed via the activation function so as to enable more atoms to be possibly selected and increase the reachable space in atom search in signal recovery. The experiment shows that as for signal compressed sensing recovery, the higher recovery possibility and the smaller ...

Polarimetric SAR image classification method based on eigenvector measurement spectral clustering

The invention belongs to the technical field of remote sensing image processing, and particularly discloses a polarimetric SAR image classification method based on eigenvector measurement spectral clustering. The aim that the eigenvectors obtained after a polarimetric coherence matrix eigenvalue is decomposed are studied and utilized is mainly achieved. The implementation process mainly comprises the steps that (1) Lee filtering is carried out on a polarimetric SAR image; (2) eigenvalue decomposition is carried out on a coherence matrix of each pixel to obtain the eigenvectors; (3) the eigenvector corresponding to the maximum eigenvalue is used for constructing features; (4) a similarity matrix is constructed in a measurement mode of included angle cosine distance; (5) a spectral clustering algorithm is carried out on the similarity matrix to obtain initial classification tags; (6) wishart clustering is carried out on the basis of the initial classification tags to obtain the final classification ...

Hyper-spectral image classification method based on non-local similarity and sparse coding

The invention belongs to the technical field image processing and particular relates to a hyper-spectral image classification method based on non-local similarity and sparse coding. The hyper-spectral image classification method based on the non-local similarity and the sparse coding comprises the achieving steps of 1 inputting a hyper-spectral image; 2 filtering a non-local average; 3 determining a training sample set C and a test sample set C'; 4 performing dictionary learning; 5 calculating the sparse coefficient of the test sample set; 6 performing hyper-spectral image classification; 7 outputting classified images. By means of the non-local average filtering method, the defect that in the prior art, only spectral information of the hyper-spectral image is utilized to perform hyper-spectral image classification and accordingly edge portion misclassification is caused is overcome, and the hyper-spectral image classification method can have the advantage that the edge portion misclassification ...

Pressure-sensitive adhesive compositions for manufacturing electronic devices

The present disclosure relates to an electronic device comprising at least one organic light-emitting diode and a pressure sensitive adhesive composition comprising a synthetic rubber block (co)polymer, and wherein the pressure sensitive adhesive composition has: (a) a relative permittivity no greater than 2.50, when measured at an alternating current frequency of 100 kHz according to the test method described in the experimental section; (b) a water uptake no greater than 0.60 wt%, when measured after exposure to 60 DEG C and 95% relative humidity for 120 hours, according to the test method described in the experimental section; and (c) optionally, a peel adhesion value above 0.20 N/mm, when measured at 85 DEG C according to the test method described in the experimental section. In another aspect, the present disclosure is directed to a method of manufacturing an electronic device comprising at least one organic light-emitting diode, wherein the method comprises the step of using a pressure ...

Tire surface

ADHESIVE COMPOSITIONS WITH HYDROPHILIC ONES AND HYDROPHOBEN PRESSURE-SENSITIVE ADHESIVES

Adhesive for bonding to low surface energy surfaces

High-temperature high-pressure multifunctional core sulfur deposition test device and method

The invention discloses high-temperature high-pressure multifunctional core sulfur deposition test device and method. The sulfur deposition test device comprises a displacement system, a formation condition analog system, a data acquisition system and a data processing system. The sulfur deposition test method comprises the following steps of: constructing a test environment, measuring the sulfur element deposition on line, observing the sulfur element deposition process on line, and testing the change of permeability of a rock sample before and after sulfur deposition and the like. The invention has the beneficial effects of realizing the visual display of a true core sulfur deposition process, the real-time online measurement of the sulfur deposition and dynamic calculation of core permeability change caused by sulfur deposition and accurately and dynamically evaluating the damage severity of permeability of a reservoir stratum, caused by sulfur deposition in real time, and has the advantages ...

PRESSURE SENSITIVE ADHESIVES AND ARTICLES INCLUDING RADIAL BLOCK AND ACRYLIC POLYMERS

Pressure sensitive adhesive compositions and articles, wherein the adhesive includes at least one acrylate pressure sensitive adhesive component and at least one thermoplastic elastomer-based pressure sensitive adhesive component. The acrylate component includes at least one polymerized monofunctional (meth)acrylic acid ester monomer having a Tg of no greater than about 0°C when homopolymerized, and 0 to about 10 wt.% of at least one copolymerized monofunctional ethylenically unsaturated monomer having a Tg of at least about 10°C when homopolymerized. The thermoplastic elastomer-based pressure sensitive adhesive component includes a radial block copolymer. © KIPO & WIPO 2007 ...

STAIN RESISTANT MICROSPHERE ARTICLES

There is provided an article comprising at least a first surface having a fluorine-containing polymeric binder resin layer and a plurality of microspheres partially embedded in a first major surface of the binder resin layer and adhered thereto; wherein the fluorine-containing polymer is derived in part from at least one partially fluorinated, or non-fluorinated, monomer; and wherein the article exhibits a stain resistance to yellow mustard at elevated temperature and humidity as measured by the change in b* of less than 50. There are also provided such articles wherein the fluorine-containing polymer is derived in part from at least one partially fluorinated, or non-fluorinated, monomer; and wherein the fluorine content along the polymeric backbone of the fluorine-containing polymer is from about 27% to 72% by weight. There are also provided such articles wherein the article is a thermoformable article exhibiting chemical resistance according to ASTM D5402-06. 1. An article comprising at least a first surface having:(a) a binder resin layer having a fluorine-containing polymer, wherein the binder resin layer has a first major surface opposite a second major surface; and(b) a plurality of microspheres partially embedded in, and adhered thereto, the first major surface of the binder resin layer;wherein the fluorine-containing polymer is derived in part from at least one partially fluorinated, or non-fluorinated, monomer; andwherein the article of embodiment exhibits a stain resistance to yellow mustard at elevated temperature and humidity as measured by the change in b* of less than 50.2. The article of wherein the plurality of microspheres are selected from at least one of glass claim 1 , polymers claim 1 , glass ceramics claim 1 , ceramics claim 1 , metals and combinations thereof.3. The article of wherein the fluorine-containing polymer is selected from at least one of the following: fluoroolefins and fluorourethanes and combinations thereof.4. The article of ...

NON-HALOGENATED POLYISOBUTYLENE-THERMOPLASTIC ELASTOMER BLEND PRESSURE SENSITIVE ADHESIVES

Multi-phase blended pressure sensitive adhesives are described. The adhesives include a first phase containing at least one non-halogenated polyisobutylene material and a second phase comprising a thermoplastic elastomer. Exemplary thermoplastic elastomers include polyolefins, styrenic block copolymers, acrylic polymers and silicone polymers. Crosslinked adhesives, including those crosslinked with actinic radiation are also described. Adhesive articles including such adhesives are disclosed as well 1. A pressure sensitive adhesive comprising a first phase comprising a non-halogenated polyisobutylene material , and a second phase comprising a thermoplastic elastomer.2. The pressure sensitive adhesive of claim 1 , wherein the non-halogenated polyisobutylene material has a weight average molecular weight of greater than 100 claim 1 ,000 gm/mole.3. The pressure sensitive adhesive according to claim 1 , wherein the thermoplastic elastomer comprises an olefinic polymer.4. The pressure sensitive adhesive according claim 3 , wherein the olefinic polymer is non-polar.5. The pressure sensitive adhesive according claim 3 , wherein the olefinic polymer comprises an olefinic block copolymer.6. The pressure sensitive adhesive according to claim 1 , wherein the thermoplastic elastomer comprises a styrenic block copolymer.7. The pressure sensitive adhesive according to claim 1 , wherein the thermoplastic elastomer comprises an acrylic polymer.8. The pressure sensitive adhesive according to claim 1 , wherein the thermoplastic elastomer comprises a silicone polymer.9. The pressure sensitive adhesive according to claim 1 , wherein the non-halogenated polyisobutylene comprises a copolymer of polyisobutylene and isoprene.10. The pressure sensitive adhesive according to claim 1 , wherein the non-halogenated polyisobutylene comprises a homopolymer of polyisobutylene.11. The pressure sensitive adhesive according to claim 1 , wherein the first phase comprises a blend of a first non- ...

Chemical resistant polyurethane adhesive

A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of a polyisocyanate component and a polyol component. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm3)1/2.

ADHESIVE FOR BINDING AT UPPERFLAT WITH LOW UPPER FLAT ENERGY

SEALING SYSTEMS WITH SELFRESPONSIBLE ADHESIVES AS WELL AS ARTICLES

ORGANOPHILE, PANEL-WELL-BEHAVED CLAY/TONE PARTICLES COMPREHENSIVE, IN THE MELT PROCESSABLE DETENTION ADHESIVE, PROCEDURE FOR ITS HERSSTELLUNG AND FROM IT MANUFACTURED ARTICLES

Hydrophilic adhesive compositions for delivery of herbal medicines

BLOCK COPOLYMER HAVING MIXED MOLECULAR WEIGHT ENDBLOCKS

The present invention is directed to a novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive and tape made therefrom. The novel block copolymer comprises from about 4 to about 40 percent by weight of a polymerized monovinyl aromatic compound and from about 96 to about 60 percent by weight of a conjugated diene. The block copolymer has the general formula QnY where Q represents an individual arm of the block copolymer and has the formula S-B; n represents the number of arms and is at least 3; and Y is the residue of a multifunctional coupling agent. Furthermore, S is a nonelastomeric polymer segment endblock of a polymerized monovinyl aromatic homopolymer, there being at least two different molecular weight endblocks in the block copolymer. The number average molecular weight of the higher molecular weight endblock (Mn)H is in the range of from about 5,000 to about 50,000, and the number average molecular weight of the lower molecular weight endblock (Mn ...

Multifunctional electricity testing vehicle used for switch cabinet

The utility model relates to a multifunctional electricity testing vehicle used for a switch cabinet. The vehicle is characterized by including a vehicle frame (2); vehicle wheels are installed at the bottom of the vehicle frame (1); drive shafts (6) are respectively arranged at the two sides of the bottom of the vehicle frame (1); three high-voltage sensors (3) are installed at the upper part of the vehicle frame (1); a contact arm is installed at the top end of each high-voltage sensor (3); a matched tulip contact (5) is installed at the top end of each contact arm (4); a secondary terminal of each high-voltage sensor (3) is electrically connected with an intelligent electrified display device (2). The beneficial effects are as follows: the multifunctional electricity testing vehicle of the switch cabinet is simple in vehicle frame structure, low in manufacturing cost, and convenient to install and use.

Lithium battery pack detection clamp

The invention relates to the technical field of lithium battery detection, in particular to a lithium battery pack detection clamp which comprises a base and a plurality of suckers symmetrically arranged on the base, and the clamp further comprises a group of clamping modules symmetrically arranged on the base and used for fixing the position of a battery pack; the rotating shafts are symmetrically and movably arranged on the machine base, and one end of each rotating shaft is connected with the corresponding clamping module; by means of a linkage structure, the battery pack is controlled to rotate to achieve detection work of all positions of the battery pack, meanwhile, the dust removal module is controlled to work to remove dust attached to the surface of the battery pack, the influence of the dust on the detection process is avoided, and compared with a traditional clamp, the device has multiple functions, the relevance between all structures is large, and the detection efficiency is ...

Blockcopolymer mit Endblöcken verschiedenen Molekulargewichts

Ecological planting method of peach with high ridge and wide furrow

The invention discloses an ecological planting method of peach with high ridges and wide furrows. In this method, forming high ridges to reduce waterlogging, covering plastic film on ridge and slope can keep moisture and increase temperature, inhibit weed growth and improve soil enzyme activity; Wide furrow can facilitate drainage and mechanized operation; Forages can be continuously interplanted between furrows to raise poultry, improve soil organic matter and reduce the application of chemical fertilizer. Reasonable plant spacing, plant height and plant type can ensure the photosynthesis of leaves, and suitable density can improve the yield and quality of peach, thus achieving the goal of saving labor and cost. According to the invention, the synergistic effect of light, soil, water and fertilizer in peach orchards is adjusted, and the risk of fruit cracking caused by waterlogging of rainwater is reduced; Intercropping pasture to raise poultry can increase soil organic matter, reduce the application of chemical fertilizer, ensure the quality of peach and improve the economic benefits of peach orchard. By adopting this planting method, the whole process of fertilizer and water management and plant protection in peach orchard can be mechanized, which can solve the problems of insufficient labor force and high labor cost that restrict the development of peach industry at present.

PRESSURE SENSITIVE ADHESIVE COMPRISING A BLOCK COPOLYMER HAVING LOW MOLECULAR WEIGHT ENDBLOCKS AND ENDBLOCK-COMPATIBLE TACKIFIER OR OIL

The present invention provides a block copolymer pressure sensitive adhesive (PSA) composition. The block copolymer has at least one midblock segment and at least one endblock segment. The midblock comprises a polymerized conjugated diene segment or hydrogenated derivative thereof. The endblock comprises a polymerized monovinyl aromatic segment having a number average molecular weight less than about 8,000. The PSA further comprises at least one tackifier or oil that is compatible with the low molecular weight endblock segment of the block copolymer. The PSA composition of the invention has a reduced elastic index and is capable of dissipating stress. This is useful in providing tapes which are capable of withstanding stresses such as those caused by temperature fluctuations, dimensional changes in the backing, or the recovery forces of a backing applied under tension. The present invention also provides a method of reducing the elastic index of a block copolymer PSA composition.

MULTI-ARM BLOCK COPOLYMER, AND PRESSURE SENSITIVE ADHESIVE AND TAPE EMPLOYING A MULTI-ARM ELASTOMERIC BLOCK COPOLYMER

The present invention provides a novel multi-arm block copolymer, a novel pressure-sensitive adhesive made from a multi-arm elastomeric block copolymer, and a novel tape made therefrom. The multi-arm block copolymer has the general structure (A-B)mY(C-D)n wherein A, B, C and D are polymer segments; Y is a residue of a multifunctional coupling agent; and m and n are the number of arms, where m and n are greater than 0 and the sum of m plus n is at least 3. A comprises a random copolymer of a monoalkenylarene and a conjugated diene; B and C comprise either a homopolymer of a conjugated diene or a polymer of two or more conjugated dienes; D comprises either a homopolymer of a monoalkenylarene or a copolymer of a monoalkenylarene and a conjugated diene wherein the Tg of D is greater than the Tg of A; and the weight percent of monoalkenylarene in the block copolymer is 40% or less. The pressure-sensitive adhesive of the invention comprises 100 parts by weight of either the previously described ...

Elemental mercury absorbent, and preparation method and application thereof

The invention discloses an elemental mercury absorbent, and a preparation method and application thereof. The elemental mercury absorbent consists of multi-wall carbon nano-tubes; silver clusters are uniformly distributed on the surface of the multi-wall carbon nano-tube, wherein the multi-wall carbon nano-tube has a diameter of 10 to 200 nm and a length of 0.01 to 3 mm; the diameter of each silver cluster is less than 3 nm; the silver cluster contains 0.1 to 12 mass percent of silver; and a silver-loaded carbon nano-tube is produced by ultrasonically stirring, mixing, filtering, drying and thermally reducing the dispersive carbon nano-tubes and solution of silver nitrate. As the carbon nano-tube has amalgam reaction capacity and high elemental mercury absorption capacity, and desorbed mercury totally exists in a form of elemental mercury, the carbon nano-tube can be used as the elemental mercury absorbent for a bed material of an absorbent bed, can be used for the absorbent jetting and ...

Non-local wavelet information based remote sensing image change detection method

The invention discloses a non-local wavelet information based remote sensing image change detection method. The non-local wavelet information based remote sensing image change detection method mainly solves the problem that the remote sensing image change detection method is low in detection accuracy. Achieving steps of the non-local wavelet information based remote sensing image change detection method comprise (1) reading data; (2) constructing a difference chart; (3) performing wavelet decomposition; (4) denoising a high-frequency portion through a non-local information based method; (5) performing inverse transformation; (6) cutting through a local fuzzy C-mean clustering method. According to the non-local wavelet information based remote sensing image change detection method, the low-frequency information integrity is protected and noise is effectively removed due to the facts that the noise is mainly distributed on a high-frequency detail information portion and accordingly image ...

RFID network topology method based on multi-agent evolutionary algorithm

The invention discloses an RFID network topology method based on the multi-agent evolutionary algorithm and belongs to the field of automatic control and information technology. The method combines a multi-agent system with evolutionary computation to solve the RFID network topology problem. The method is characterized in that each agent in an agent grid is initialized according to two algorithms, and then a neighborhood competition operator, a neighborhood right-angled crossover operator, a mutation operator and a self-learning operation are designed to optimize the agents. Verification results show that the method has great advantages in terms of solving the maximum coverage rate of reader-writers, the minimum number of the reader-writers and the minimum interference rate of the reader-writers when used for evaluating and solving the RFID network topology problem and is an effective method for solving the RFID network topology problem.

Impact-resistant polyester pressure-sensitive adhesive

Polyester pressure-sensitive adhesives are described. The polyester includes at least two different diacid residues and at least two different diol residues. The polyester includes at least one pendant group containing an alkenyl group. A ratio of a total number of the at least one pendant group to the total number of ester groups in the polyester is in a range of 0.001 to 0.1. The polyester has a glass transition temperature in a range of -50 DEG C to -10 DEG C.

Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives

Animal nucleic acid sample normal temperature preservation reagent and application thereof

The invention discloses an animal nucleic acid sample normal temperature preservation reagent and an application thereof. The animal nucleic acid sample normal temperature preservation reagent comprises an acid cell lysis agent, nuclease inhibitors, a surfactant, sodium citrate and sodium acetate, wherein the acid cell lysis agent is guanidinium isothiocyanate, the used nuclease inhibitors are 8-hydroxyquinoline and beta-mercaptoethanol, and the used surfactant is lauryl sodium sulfate. On the other hand, the invention discloses a method for treating filter paper by using the animal nucleic acid sample normal temperature preservation reagent. The method comprises the following steps: 1) soaking the filter paper in the animal nucleic acid sample normal temperature preservation reagent; 2) baking the filter paper at 37-50 DEG C; 3) sterilizing the filter paper for later use.

Image segmentation method based on iteration self-organization and multi-agent inheritance clustering algorithm

The invention discloses an image segmentation method based on an iteration self-organization and multi-agent inheritance clustering algorithm. The method mainly solves the problems that a segmentation result depends on initial parameters excessively, and the phenomenon of local optimum occurs easily in the prior art. The method comprises the segmentation steps that 1) gray information of an image to be segmented is extracted; 2) the algorithm thought of the iteration self-organization algorithm ISODATA is used for the image to be segmented to obtain the optimal clustering number; 3) according to the optimal clustering number, a multi-agent algorithm frame is utilized for clustering the image to be segmented to obtain an optimal clustering label; 4) according to the optimal clustering label, image pixels of the image to be segmented are classified to achieve image segmentation. According to the method, the clustering number does not need to be determined definitely, the convergence effect ...

SAR image ground object cutting method based on random projection and improved spectral cluster

The invention discloses an SAR image ground object cutting method based on a random projection and an improved spectral cluster and belongs to the technical field of image processing. The SAR image ground object cutting method based on the random projection and the improved spectral cluster is the tentative research aimed at the application of a compression sensing radar system and is mainly used for directly carrying out a series of processing on observation vectors of a target for image cutting. According to the process, an image to be cut is partitioned through a 9*9 window according to the pixels; one-dimension Gaussian random observation is carried out on each block, and the obtained observation vectors are stored into Y1; the density sensitive distance between the blocks is worked out with each observation vector as a whole, and a Laplacian matrix is constructed; a feature vector corresponding to the maximum feature value of the Laplacian matrix is worked out, and a matrix V is constructed ...

Unbalanced data classification method based on unbalanced classification indexes and integrated learning

The invention discloses an unbalanced data classification method based on unbalanced classification indexes and integrated learning, and mainly solves the problem of low classification accuracy of the minority class of the unbalanced data in the prior art. The method comprises steps as follows: (1), a training set and a testing set are selected; (2), training sample weight is initialized; (3), part of training samples is selected according to the training sample weight for training a weak classifier, and the well trained weak classifier is used for classifying all training samples; (4), the classification error rate of the weak classifier on the training set is calculated, is compared with a set threshold value and is optimized; (5), voting weight of the weak classifier is calculated according to the error rate, and the training sample weight is updated; (6), whether the training of the weak classifier reaches the maximum number of iterations is judged, if the training of the weak classifier ...

Scientific and technological achievement data text mining method, electronic equipment and storage medium

The embodiment of the invention provides a scientific and technological achievement data text mining method, electronic equipment and a storage medium. The method comprises the following steps: text preprocessing: representing text data by using a highly summarized vector, summarizing a text data set into a vector set which is equivalent to a two-dimensional table, and carrying out text preprocessing according to the two-dimensional table and text data features; indexing text features, and performing word segmentation on the preprocessed text data to obtain text feature words in the text data; the method comprises the following steps: automatically classifying texts, taking a pre-classified text set as a training set, analyzing the training set to export a classification model, solving the classification model by using an inspection process, and exporting the classification model for classifying other online texts; and text clustering: carrying out spectrum embedding on original data, and ...

Multilayer pressure sensitive adhesive assembly

The present disclosure relates to a multilayer pressure sensitive adhesive assembly comprising at least a first pressure sensitive adhesive layer superimposed to a second polymer layer, wherein a curable liquid precursor of the first pressure sensitive adhesive polymer layer comprises a low Tg (meth)acrylate copolymer and a high Tg (meth)acrylate copolymer having a weight average molecular weight (Mw) of above 20,000 Daltons. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive assembly and uses thereof.

Acrylic adhesives containing an amine plasticizer

Acrylic adhesives containing an acrylic polymer and a plasticizer are provided. The acrylic polymer includes copolymerized monomers of a first alkyl acrylate, a second alkyl acrylate, and a vinyl carboxylic acid. The alkyl group of the first alkyl acrylate has at least 4 carbon atoms, and the alkyl group of the second alkyl acrylate has 1-3 carbon atoms. The plasticizers include a di-ethoxylated tertiary amine segment.

BLOCK COPOLYMER MELT-PROCESSABLE COMPOSITIONS, METHODS OF THEIR PREPARATION, AND ARTICLES THEREFROM

Pressure sensitive adhesive comprising a block copolymer having low molecular weight endblocks and endblock-compatible tackifier or oil

Polarized SAR image classification method on basis of SAE and IDL

The invention discloses a polarized SAR (Synthetic Aperture Radar) image classification method on the basis of an SAE (Stake Auto-Encoder) and IDL (Inbalanced Data Learning). The polarized SAR image classification method comprises the following implementing steps: (1) preprocessing; (2) training parameters of the SAE; (3) extracting characteristics; (4) training parameters of a Softmax classifier; (5) acquiring a classification result I; (6) establishing an IDL model; (7) training the IDL model; (8) acquiring a classification result II; (9) outputting a final classification result. The polarized SAR image classification method adopts the SAE to extract the characteristics capable of more substantially describing an original input; moreover, the polarized SAR image classification method solves the problem of large classification accuracy difference between classes, which is caused by class unbalance of a training sample set, and has the advantage of improving classification accuracy and ...

Polarized SAR image classifying method based on fuzzy particle swarms and scattering entropy

The invention discloses a polarized SAR image classifying method based on fuzzy particle swarms and scattering entropy. The polarized SAR image classifying method based on the fuzzy particle swarms and the scattering entropy comprises the steps of 1 inputting coherence matrixes of polarized SAR image data; 2 perform preprocessing, 3 extracting scattering features; 4 performing initial classification; 5 performing initial classification optimization; 6 performing final classification; 7 outputting a classification result. The polarized SAR image classifying method adopts a method for optimizing the initial classification, and the defect that initial clustering centers of the polarized SAR image data are directly classified in the prior art and accordingly produced polarized SAR image data classification are inaccurate is overcome. Therefore, the polarized SAR image classifying method can improve the classification accuracy of the polarized SAR image data, decrease Wishart iterations, reduce ...

Polarization SAR image classification method based on vision prior model

The invention discloses a polarization SAR image classification method based on a vision prior model. The problem that in the prior art, classification accuracy is low is mainly solved. The classification method comprises the steps that a polarization SAR original coherence matrix T is subjected to rearrangement, a rearranged matrix Tr is obtained, a main component analyzing method is used for processing the Tr, and a whitening matrix W is obtained; the method based on the vision prior model is used for carrying out dictionary learning on the Tr, and a self-adaptation dictionary theta u is obtained; the rearranged matrix Tr and the self-adaptation dictionary theta u are used as input data, a maximum posterior probability estimation method is used for computing sparse coefficients of all picture elements in the Tr, a sparse coefficient Y of a polarization SAR image is obtained through combination, a K mean value algorithm is used for carrying out initial clustering on the Y, and a clustering ...

Maintenance device for moderator reflector plug-in mounted in underground helium container

The invention relates to a maintenance device for a moderator reflector plug-in, in particular to a maintenance device for a moderator reflector plug-in mounted in an underground helium container. According to the maintenance device for the moderator reflector plug-in mounted in the underground helium container, the moderator reflector plug-in which is mounted in the underground helium container, is not assisted in operation by any manipulator in the whole journey, and has extra large, overweight and superstrong radiation can be maintained in a segmented manner. The maintenance device comprises a lifting lead tank, a three-axis platform, a lifting appliance, a long-handle tool, a maintenance tool, a monitoring device, a display device and a storage lead tank. The maintenance device and a method are adopted to maintain the moderator reflector plug-in, and the problems of manufacturing of an extra large lifting shielding container, bearing difficulties of a crane, construction of large type ...

Latent, over-tackified, adhesives and methods of use

BLOCK COPOLYMER HAVING MIXED MOLECULAR WEIGHT ENDBLOCKS

The present invention is directed to a novel polymodal asymmetric elastomeri c block copolymer and a pressure sensitive adhesive and tape made therefrom. The novel block copolymer comprises from about 4 to about 40 percent by weight of a polymerized monovinyl aromatic compound and from about 96 to about 60 percent by weight of a conjugated diene. The block copolymer has the general formula Q n Y where Q represents an individual arm of the block copolymer and has th e formula S-B; n represents the number of arms and is at least 3; and Y is the residue of a multifunctional coupling agent. Furthermore, S is a nonelastomeric polymer segment endblock of a polymerized monovinyl aromatic homopolymer, there being at least two differe nt molecular weight endblocks in the block copolymer. The number average molecular weight of the higher molecular weight endblock (Mn) H is in the range of from about 5,000 to about 50,000, and the number average molecular weight of the lower molecular weight endblock ...

Inter-crosslinked polymeric microparticles

Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.

Aziridine crosslinking agents for acrylic adhesives

A crosslinkable, pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.

PRESSURE SENSITIVE ADHESIVE COMPRISING A BLOCK COPOLYMER HAVING LOW MOLECULAR WEIGHT ENDBLOCKS AND ENDBLOCK-COMPATIBLE TACKIFIER OR OIL

The present invention provides a block copolymer pressure sensitive adhesive (PSA) composition. The block copolymer has at least one midblock segment and at least one endblock segment. The midblock comprises a polymerized conjugated diene segment or hydrogenated derivative thereof. The endblock comprises a polymerized monovinyl aromatic segment having a number average molecular weight less than about 8,000. The PSA further comprises at least one tackifier or oil that is compatible with the low molecular weight endblock segment of the block copolymer. The PSA composition of the invention has a reduced elastic index and is capable of dissipating stress. This is useful in providing tapes which are capable of withstanding stresses such as those caused by temperature fluctuations, dimensional changes in the backing, or the recovery forces of a backing applied under tension. The present invention also provides a method of reducing the elastic index of a block copolymer PSA composition.

Graphic image recognition and matching method based on genetic programming algorithms of novel coding modes

The invention belongs to the technical field of image processing, particularly discloses a graphic image recognition and matching method based on genetic programming algorithms of novel coding modes, and aims to acquire more suitable features in image matching through novel algorithms so as to increase retrieval accuracy in image recognition and matching. The method includes the steps of 1, setting parameters, initializing a population and selecting matching modes; 2, calculating population fitness and performing genetic operations including crossing, variation, self-crossing and self-exchanging; 3, optimizing individuals after genetic operations, and performing local retrieval; 4, further optimizing the population and judging whether or not evolution ends; 5, decoding an individual tree to obtain modes of extracting new features so as to obtain new image features; 6, outputting an image matching model according to the new image features and the set matching modes. The method has the advantages ...

BLENDS FOR PRESSURE SENSITIVE ADHESIVES USED IN PROTECTIVE FILMS

There is provided an article comprising: a) a protective film comprising a thermoplastic film having a first side and a second side, and a pressure sensitive adhesive composition adhesively attached to at least one of the first side or the second side of the thermoplastic film, wherein the pressure sensitive adhesive composition comprises a blend of: i) an aqueous based pressure sensitive adhesive latex; ii) a low adhesion additive; and iii) a crosslinker; and b) a metal substrate adhesively attached to a side of the pressure sensitive adhesive composition opposite the thermoplastic film. There is also provided a pressure sensitive adhesive composition comprises a blend of: i) an aqueous based pressure sensitive adhesive latex; ii) a low adhesion additive; and iii) a cross linker.

Pressure sensitive adhesive foams and articles therefrom

There is provided a pressure sensitive adhesive foam comprising a foam comprising a non-syntactic foam blend of styrenic block copolymer and acrylic copolymer wherein the pressure-sensitive adhesive foam has an elongation of greater than 600%, wherein the non-syntactic foam blend is a hot melt formed foam. There is also provided multilayer pressure sensitive adhesive foams, pressure sensitive adhesive foam tapes and articles made using such pressure sensitive adhesive foam.

AZIRIDINE CROSSLINKING AGENTS FOR ACRYLIC ADHESIVES

A crosslinkable, pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.

Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives

Pressure sensitive adhesives and articles including radial block and acrylic polymers

Micro-grid analogue simulation system based on real-time digital simulation platform

The invention discloses a micro-grid analogue simulation system based on a real-time digital simulation platform. The micro-grid analogue simulation system comprises a real-time digital simulator and a micro-grid device. The real-time digital simulator comprises a hardware interface and a software system. The hardware interface comprises an input interface card and an output interface card. A micro-grid system model is set up in the software system and comprises a micro-grid power distribution network model and a distributed type power micro-grid device primary system model. The micro-grid device comprises a micro-grid central control unit, a photovoltaic power generation controller, an energy storage device controller and a protection device controller, wherein the photovoltaic power generation controller, the energy storage device controller and the protection device controller are connected with the micro-grid central control unit respectively. The micro-grid analogue simulation system ...

Method for segmenting color images on basis of NSGA-II (non-dominated sorting genetic algorithm-II) evolution algorithms

The invention discloses a method for segmenting color images on the basis of NSGA-II (non-dominated sorting genetic algorithm-II) evolution algorithms. By the aid of the method, parameters lambda can be omitted in image segmenting energy functional expressions. The method includes implementing steps of (1), inputting the to-be-segmented images; (2), marking and clustering the images; (3), roughly segmenting the to-be-segmented images; (4), initializing population of roughly segmented object data; (5), computing individual fitness degrees; (6), carrying out non-dominated quick sorting; (7), performing binary tournament selection for parent population; (8), allowing the parent population to perform crossover and mutation to generate offspring; (9), merging the parent population and offspring population and carrying out non-dominated quick sorting on the parent population and the offspring population; (10), selecting elite population; (11), judging whether cyclic algebra set conditions are ...

Semi-supervised remote sensing image retrieval method under limited labeled sample condition

The invention discloses a semi-supervised remote sensing image retrieval method under a limited labeled sample condition, and mainly solves the problems that in the prior art, semantic information hidden in an unlabeled sample is difficult to fully mine, and the generalization performance is poor under the limited labeled sample condition. According to the scheme, a semi-supervised multi-task double-branch network composed of supervised branches and self-supervised branches is constructed; dividing the high-resolution remote sensing data set into an annotated image and a non-annotated image; extracting a feature vector and a class probability vector of the annotated image, and extracting a feature vector of the enhanced view of the unannotated image; training the semi-supervised multi-task double-branch network by using the extracted feature vector and the class probability vector; and inputting a to-be-queried image and a to-be-retrieved database into the trained semi-supervised multi-task ...

Automatic check system for optical fiber links of intelligent substations

The invention discloses an automatic check system for optical fiber links of intelligent substations, which relates to the technical field of optical fiber link detection and check tools. The automatic check system for optical fiber links of intelligent substations comprises a transmitting end and a receiving end, the transmitting end comprises a first segment display, a first segment display driving module, a first CPU (Central Processing Unit) processing module, a first power module, a signal generation module and an optical signal transmission module, and the receiving end comprises a second segment display, a second segment display driving module, a second CPU processing module, a second power module, a signal receiving module and an optical signal receiving module. The automatic check system for optical fiber links of intelligent substations is convenient to use and easy to operate, and compared with conventional check tools, the automatic check system for optical fiber links of intelligent ...

Image reconstruction method based on heredity sparse optimization and Bayes estimation model

The invention discloses an image reconstruction method based on heredity sparse optimization and a Bayes estimation model. The method mainly solves the problems that in the partitioning and reconstruction process of a compressed sensing image through the existing method, a boundary is fuzzy and a blocking effect is obvious. According to the method, image blocks are classified into smooth image blocks and non-smooth image blocks, and modeling and reconstruction are respectively carried out on the smooth image blocks and the non-smooth image blocks; according to the statistical property of the smooth image blocks, rapid reconstruction is carried out on the direct current components and the variable components of the smooth image blocks by directly using pseudo-inverse solutions; for the non-smooth image blocks, optimal reconstruction is carried out on the non-smooth image blocks by selecting a set of atoms from a PCA dictionary through a genetic algorithm. Experimental results show that compared ...

SAR image speckle reduction method based on directional wave domain HMT model

The invention discloses an SAR image speckle reduction method based on a directional wave domain HMT model, which is mainly used for solving the problem that detail information such as the edge structure of the image cannot be effectively kept and the radiation characteristic of an SAR image cannot be kept well in the existing method. The SAR image speckle reduction method comprises the following realization steps of: (1) inputting an image; (2) establishing a non-logarithm additive model; (3) constructing a directional wave domain HMT model parameter set; (4) establishing the directional wave domain HMT model parameter set; (5) estimating the directional wave high-frequency sub-band coefficient of a spotless image; (6) carrying out directional wave inverse transformation; (7) outputting the estimated spotless image. The SAR image speckle reduction method disclosed by the invention has the advantages of being capable of effectively keeping the edge and detail information of the image, and ...

Gas treatment device for well head end analysis in well logging engineering

The invention discloses a gas treatment device for well logging engineering wellhead end analysis, and relates to the technical field of oil field well logging engineering, the gas treatment device comprises a top cover, an outer pipe, a bottom cylinder, a gas conduit, a dryer and a gas-water separator, the lower part of the inner cavity of the bottom cylinder is a water receiving box, and the gas-water separator is located at the upper part of the inner cavity of the bottom cylinder and comprises a bottom plate and a shell; the bottom plate is mounted at the bottom of the shell, and a plurality of water through grooves are formed in the bottom plate; a mounting groove is formed in the center of the top of the shell, a plurality of vent grooves are formed in the side wall, and a glass ball is arranged in an inner cavity; the dryer is placed in the outer pipe, and an inner cavity of the dryer is filled with a drying agent; a gas inlet channel and a gas outlet channel are formed in the top ...

Adhesive for bonding to low surface energy surfaces

A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Mehrarmiges Blockcopolymer und Haftkleber und mit einem mehrarmigen elastomeren Blockcopolymer hergestelltes Band

KLEBSTOFFZUSAMMENSETZUNGEN MIT HYDROPHILEN UND HYDROPHOBEN DRUCKEMPFINDLICHEN KLEBSTOFFEN

Adaptive-window stomach CT image lymph node tracking detection system and method

The invention discloses an adaptive-window stomach CT image lymph node tracking detection system and method. In the system and the method, a suspected-lymph-node extraction method based on fuzzy C-means and boundary prior is used firstly to obtain suspected lymph nodes of each stomach CT image. Because the shapes, gray levels and space positions of the suspected lymph nodes are significantly similar with those of blood vessels, a problem that the lymph nodes and the blood vessels are hard to distinguish exists in the suspected lymph nodes of each stomach CT image. Targeted at the problem, the invention designs the adaptive-window lymph node tracking detection method. The method carries out adaptive definition of the window of each suspected lymph node according to a maximum section area of each suspected lymph node and uses a CT image which the maximum section area is in as a current frame and carries out tracking operations forwards and backwards from the current frame. Because area change ...

Hyperspectral feature leaning method based on recursion automatic coding

The invention belongs to the technical field of image processing and particularly provides a hyperspectral feature leaning method based on recursion automatic coding. The hyperspectral feature leaning method based on recursion automatic coding comprises the steps that all pixels in a hyperspectral image are expressed with feature vectors, normalization processing is carried out, and a training set and a test set are selected; a neighboring window block is established for each feature vector; in the training set, feature vector pair combination is carried out on each feature vector and the neighborhood of each feature vector according to the reconstruction error minimization rule among the feature vectors, and then a whole network is trained according to the reconstruction error of the whole network; the training set and the test set are input into the trained network respectively so that a new training set and a new test set are obtained; the new training set and the new test set are input ...

Sparse representation-based deblocking method

The invention discloses a sparse representation-based deblocking method, which mainly solves the problem of the presence of a blocking effect in a block discrete cosine transform (BDCT) compressed image. The method comprises the following implementation steps of: (1) selecting a clean training image set and training a general dictionary with a kernel singular value decomposition (KSVD) algorithm and a batch processing orthogonal matching pursuit algorithm; (2) compressing a test image by controlling a quality factor during joint photographic experts group (JPEG) compression so as to obtain a JPEG compressed image; (3) calculating the noise standard deviation of the JPEG compressed image; (4) automatically estimating an error threshold according to the quality factor and the noise standarddeviation; (5) constructing an image block matrix of the JPEG compressed image so as to obtain a de-noised sparse representation matrix; and (6) obtaining a deblocking result image by using the general ...

Target identification method of remote sensing image of artificial immune network based on self-adaptive PSO (Particle Swarm Optimization)

The invention discloses a target identification method of a remote sensing image of an artificial immune network based on a self-adaptive PSO(Particle Swarm Optimization), mainly overcoming the disadvantages of low target identification precision and low convergence speed in the traditional method. The identification method comprises the following steps of: firstly, extracting 7 invariant moment characteristics of an image target and carrying out normalization treatment on the characteristic data; secondly, setting running parameters, selecting a training sample and initializing an immune network and immune cells; thirdly, calculating the affinity degree of the immune cells and cloning the immune cells; fourthly, executing hyper-mutation operation based on the self-adaptive PSO; fifthly, selecting an immune cell with highest affinity degree and adding the immune cell into the immune network; sixthly, carrying out network inhibition operation; seventhly, judging a stop condition, turning ...

Block copolymer having mixed molecular weight endblocks

Fast high-resolution SAR (synthetic aperture radar) image ship detection method based on feature fusion and clustering

The invention discloses a fast high-resolution SAR (synthetic aperture radar) image ship detection method based on feature fusion and clustering. The fast high-resolution SAR image ship detection method comprises the following steps: on the basis of the back scattering characteristics of each ground object and the prior information of a ship target in an SAR image, positioning a target potential position index map by an Otsu algorithm and range constraint; on the index map, pre-screening to obtain a detection binary segmentation map by a CFAR (constant false alarm rate) algorithm based on a local contrast; carrying out morphological processing to a detection result, and extracting a potential target slice from the SAR image and a detected binary segmentation map according to a processing result; and carrying out K-means clustering to the extracted slice by a designed identification feature to obtain a final identification result. According to the fast high-resolution SAR image ship detection ...

SAR image segmentation method based on line segment co-occurrence matrix characteristics and regional maps

The invention discloses an SAR image segmentation method based on line segment gray-level co-occurrence characteristics and regional maps. The method mainly includes the following steps: according to an initial sketch model, extracting a sketch of an SAR image and according to a line segment gray-level co-occurrence matrix, classifying line segments into two types: W1 and W2; according to the line segment classification result and neighbor clustering analysis of a line segment space, extracting regional maps of the SAR image; according to the regional maps, mapping the SAR image into a clustering area, a non-clustering area and a line-segment-free area; using a water-shed method to perform over-segmentation on the SAR image; adopting different combination strategies to combine the three areas of the SAR image and the integrating the combination results of the three areas; and using AP clustering to carry out class label determination on the divided areas so as to obtain an SAR image segmentation ...

Integrated circuit floorplanning method based on moving block sequence and multi-agent particle swarm

The invention discloses an integrated circuit floorplanning method based on a moving block sequence and a multi-agent particle swarm, and belongs to the technical field of physical design floorplanning. The moving block sequence is used as an encoding method, a multi-agent system and a particle swarm algorithm are combined, and the integrated circuit floorplanning method is used for solving the integrated circuit floorplanning problem. The integrated circuit floorplanning method is characterized in that firstly, each agent in an agent grid is initialized according to an adopted random generation method, then the moving block sequence is designed to encode each agent, and a neighbourhood competition operator, the particle swarm algorithm and a self-learning operator are designed at last to optimize the agents. Verification results show that the integrated circuit floorplanning method has advantages on one important aspect of methods and effectiveness for evaluating and solving the integrated ...

Polarization SAR image classification method based on polarization features and affinity propagation clustering

The invention discloses a polarization SAR image classification method based on polarization features and affinity propagation clustering. The method mainly solves the problem that an existing non-supervision polarization SAR classification method is not high in classification precision and comprises the steps that feature decomposition and Freeman decomposition are conducted on each pixel point, and three kinds of coefficients and four kinds of scattering power of each pixel point are extracted; images are divided according to the obtained coefficients and scattering power, and seven categories are obtained; each category is divided into three small types through data distribution features; a similarity matrix is calculated for the obtained twenty-one categories and is clustered by the affinity propagation clustering, and pre-classified results of the images are obtained; finally, a Wishart classifier is used for conducting iteration classification on the images obtained through pre-classification ...

Hydroxyevodiamine and erlotinib combined medicine containing indolequinone unit as well as preparation method and application of hydroxyevodiamine and erlotinib combined medicine

The invention relates to a hydroxyevodiamine and erlotinib combined medicine containing an indolequinone unit as well as a preparation method and application of the hydroxyevodiamine and erlotinib combined medicine. According to the present invention, the hydroxyevodiamine and erlotinib combined drug having the indolequinone unit is synthesized; according to the present invention, the biological activity of the hydroxyevodiamine and erlotinib combined drug having the indolequinone unit is evaluated through the in vitro experiment, and the strong anti-proliferative activity on non-small cell lung cancer (NSCLC) cells is found, and the time dose dependence is represented, such that the anti-proliferative activity of the hydroxyevodiamine and erlotinib combined drug having the indolequinone unit is provided, and the anti-proliferative activity of the hydroxyevodiamine and erlotinib combined drug having the indolequinone unit is provided; moreover, the effects of the hydroxyevodiamine, the ...

Hot melt processable pressure sensitive adhesive comprising organophilic clay plate-like particles, a method of making, and articles made therefrom

The invention relates to a hot melt processable pressure sensitive adhesive comprising at least one elastomer, organophilic clay plate-like particles, and at least one non-volatile organophilic exfoliating agent. Also disclosed are articles prepared therefrom and methods pertaining thereto.

Pressure sensitive adhesives and articles including radial block and acrylic polymers

Pressure sensitive adhesive compositions and articles, wherein the adhesive includes at least one acrylate pressure sensitive adhesive component and at least one thermoplastic elastomer-based pressure sensitive adhesive component. The acrylate component includes at least one polymerized monofunctional (meth)acrylic acid ester monomer having a Tg of no greater than about 0° C. when homopolymerized, and 0 to about 10 wt % of at least one copolymerized monofunctional ethylenically unsaturated monomer having a Tg of at least about 10° C. when homopolymerized. The thermoplastic elastomer-based pressure sensitive adhesive component includes a radial block copolymer.

Pressure sensitive adhesive comprising a block copolymer having low molecular weight endblocks and endblock-compatible tackifier or oil

LONG LASTING OUTDOOR TAPE

SAR image de-noising algorithm based on Primal Sketch classification and SVD domain improvement MMSE estimation

The invention discloses an SAR image de-noising algorithm based on Primal Sketch classification and SVD domain improvement MMSE estimation. The problem that in the prior art, details are fuzzy during SAR image de-noising is solved. The method mainly comprises the steps that firstly, in the Primal Sketch algorithm, an energy image is improved by the adoption of a dual-neighbourhood contrast enhancement method, then the Primal Sketch algorithm is adopted for dividing SAR images into a non-edge class and an edge class; NLSVD decomposition is carried out on the pixel points in the two classes, a singular value matrix is estimated by the minimum mean square error criterion containing constriction factors, and inverse transformation is carried out to obtain the estimation value of the edge class and the estimation value of the non-edge class; finally, edge coefficients are calculated, and the boundary of the edge class and the boundary of the non-edge class are fused through the Butterworth fusion ...

Olefin block copolymer based pressure sensitive adhesives

Composition blends are prepared that are hot melt processable pressure sensitive adhesives. The composition blends include at least one olefinic block copolymer, at least one elastomeric polymer, and at least one tackifying resin. The composition blends may also include additional components, such as for example, at least one plasticizer. The composition blends can be used to prepare articles, such as tapes, by disposing the hot melt processable pressure sensitive adhesive blend composition on at least a portion of a substrate.

Integrated circuit layout method based on best fit heuristic sequence and organizational evolutionary algorithms

The invention discloses an integrated circuit layout method based on a best fit heuristic sequence and organizational evolutionary algorithms, and belongs to the technical field of physical design layout planning. The best fit heuristic sequence is utilized for carrying out encoding and decoding, is combined with the organizational evolutionary algorithms and is used for solving the super-large-scale integrated circuit layout. The integrated circuit layout method is characterized in that firstly, units are initialized, secondly, the best fit heuristic sequence is utilized for carrying out encoding and decoding on the units, and lastly, the organization is optimized through the designed split operator, the designed annexation operator and the designed training operator. The verification result shows that one important aspect of evaluating the effectiveness of solving the super-large-scale integrated circuit layout of the method is the optimal chip area utilization rate solving, and the integrated ...

Transformer fault diagnosis method and system based on DBN-ISSA-KELM

The invention discloses a transformer fault diagnosis method and system based on DBN-ISSA-KELM, and belongs to the technical field of transformer fault diagnosis, and the method comprises the following steps: firstly, carrying out the feature extraction of the ratio data of the concentration of dissolved gas in oil of a transformer fault sample through a deep belief network; then, replacing a softmax classifier in the diagnosis model by using a kernel extreme learning machine introduced with a penalty factor C and a kernel function parameter S, and deeply analyzing a mapping relation between a gas ratio characteristic value of an easily confused sample and a transformer fault type; and finally, optimizing a penalty factor C and a kernel function parameter S in the KELM model by using a sparrow search algorithm improved by a Levy variation factor so as to enhance the global search capability of the sparrow search algorithm and further improve the stability and accuracy of the fault diagnosis ...

Block copolymer having mixed molecular weight endblocks

Collector composite structure for traveling wave tube and preparation method of collector composite structure

The invention provides a collector composite structure for a traveling wave tube and a preparation method thereof, and relates to the technical field of vacuum electronic devices. The method comprises the following steps: preparing an insulating cylinder made of a high-thermal-conductivity boron nitride material by adopting a chemical vapor deposition method, and carrying out secondary processing on redundant parts; a collector electrode made of a pyrolytic graphite material is prepared on the inner wall of the insulating cylinder by adopting a chemical vapor deposition method, so that the collector electrode is connected with the insulating cylinder, and redundant parts are secondarily processed; an electrode tail cover made of a pyrolytic graphite material is prepared by adopting a chemical vapor deposition method, and redundant parts are secondarily processed. According to the collector prepared by the method, vapor-deposited high-purity and high-density pyrolytic boron nitride and pyrolytic ...

Adhesive for bonding to low surface energy surfaces

Combinatorial library comprising pouches as packages for library members

Maneuvering target tracking method based on variable structure multiple models

The invention provides a maneuvering target tracking method based on variable structure multiple models. The maneuvering target tracking method mainly solves the problems that in the prior art, target tracking accuracy is low and target tracking is not in time. The method includes the implementation steps that firstly, a target motion state detected by radar is sampled, and then a radar measured value is acquired; secondly, a maneuvering target tracking mathematical model is established according to target motion characteristics; thirdly, a maneuvering target motion model is established according to the target tracking mathematical model and is initialized; fourthly, through a model set adaptive strategy, a target motion model set at each moment is acquired; fifthly, according to the radar measured value and the target motion model sets, a variable structure interactive multi-model algorithm is operated, state estimation of a maneuvering target is acquired, and primary tracking of the target ...

Polarization SAR (synthetic aperture radar) image classification method based on Freeman decomposition and PSO (particle swarm optimization)

The invention discloses a polarization SAR (synthetic aperture radar) image classification method based on Freeman decomposition and PSO (particle swarm optimization), and mainly aims to solve the problems of higher computational complexity and poor classification effect in the prior art. The implementation steps are as follows: (1) inputting a covariance matrix of polarization SAR data; (2) performing Freeman decomposition on the input matrix to obtain three scattering power matrixes of plane scattering, dihedral angle scattering and volume scattering; (3) initially dividing the SAR data according to the three scattering power matrixes; (4) obtaining two threshold values of each category by virtue of the two-dimensional double threshold value Otsu method on the basis of QPSO (quantum-behaved particle swarm optimization); (5) dividing each initially divided category of the polarization SAR data into three categories, thereby dividing the whole polarization SAR data into 9 categories; (6 ...

Tourism work of art removes display device

The utility model relates to a tourism work of art removes display device, including the base chamber, base chamber upper portion is provided with the showroom, and the base chamber left and right sides is connected with left branch dagger and right branch dagger respectively, base chamber intermediate position is provided with the motor chamber, and motor chamber lower part is provided with the motor, and motor upper portion is connected with the motor shaft, and motor shaft upper portion is connected with rotary platform, and the rotary platform upper portion left and right sides is provided with first show chamber and second show chamber respectively, and the first show chamber and the second show chamber upper portion left and right sides all are connected with the connecting rod, and the connecting rod lower part all is connected with rings, showroom upper portion is provided with the dust catcher, and the dust catcher sub -unit connection has into dirt chamber. The utility model discloses ...

RADIATION CURABLE POLY(ISOBUTYLENE) ADHESIVE COPOLYMERS

The disclose provides pressure-sensitive adhesives and adhesive sealants prepared from modified, crosslinked isobutylene copolymers, and tape articles prepared therefrom. 1. An adhesive composition comprising: a) an isobutylene copolymer having pendent , free-radically polymerizable , ethylenically unsaturated groups , b) a tackifier , and c) a photocrosslinking agent.2. The adhesive composition of comprising greater than 0% by weight but less than 20% by weight of polymerized monomer units having pendent claim 1 , free-radically polymerizable claim 1 , ethylenically unsaturated groups.3. The adhesive composition of wherein the polymerized monomer units having pendent claim 2 , free-radically polymerizable claim 2 , ethylenically unsaturated groups are isoprene monomer units.4. The adhesive composition of wherein the free-radically polymerizable claim 1 , ethylenically unsaturated groups are alkenyl groups.6. The adhesive composition of comprising greater than 0 to 150 parts by weight of said tackifier per 100 parts by weight of said copolymer.7. The adhesive composition of comprising 10 to 100 parts by weight of said tackifier per 100 parts by weight of said copolymer.8. The adhesive composition of wherein the photocrosslinking agent is selected from aldehydes; ketones; quinones; thioxanthones and chromophore-substituted vinyl halomethyl-sym-triazines photocrosslinking agents.11. The adhesive composition of wherein the copolymer has a molecular weight (Mw) of 50 claim 1 ,000 to 5 claim 1 ,000 claim 1 ,000.12. The adhesive composition of wherein Z is an alkenyl-containing group.15. The adhesive composition of wherein Ris a divalent alkylene or arylene claim 14 , and Ris a divalent alkylene.17. The adhesive composition of wherein -Q-Z is derived from a terpene alcohol or acid.18. The crosslinked adhesive composition of .19. An adhesive article comprising a crosslinked coating of the adhesive of on a backing20. The adhesive composition of claim 1 , wherein the ...

Pressure sensitive adhesive comprising blend of synthetic rubber and functionalized synthetic rubber bonded to an acylic polymer

A pressure sensitive adhesive composition is described comprising unfunctionalized (e.g. polyisobutylene) synthetic rubber and an acrylic polymer having functionalized polyisobutylene polymer bonded to the acrylic polymer. In some embodiments, the functionalized polyisobutylene polymer has a first functional group hydrogen bonded with a second functional group present in the acrylic polymer backbone. In other embodiments, the functionalized polyisobutylene polymer is covalently bonded to the acrylic polymer backbone. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.

PRESSURE SENSITIVE ADHESIVE COMPRISING FUNCTIONALIZED POLYISOBUTYLENE HYDROGEN BONDED TO ACYLIC POLYMER

A pressure sensitive adhesive composition is described comprising a polyisobutylene polymer having a first functional group and an acrylic polymer having a second functional group present in the acrylic polymer backbone. The first and second functional groups form a hydrogen bond. In some embodiments, the adhesive composition further comprises a crosslinker that covalently crosslinks the second functional group(s) present in the polymer backbone of the acrylic polymer. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive. 1. A pressure sensitive adhesive composition comprising:a polyisobutylene polymer having a first functional group; andan acrylic polymer having a second functional group present in the acrylic polymer backbone;wherein the first and second functional groups form a hydrogen bond.2. The pressure sensitive adhesive composition of wherein the first or second functional group is a hydrogen bond acceptor and the other functional group is a hydrogen bond donor.3. The pressure sensitive adhesive composition of wherein the polyisobutylene has a number average molecular weight of less than 10 claim 1 ,000 g/mole.4. The pressure sensitive adhesive composition of wherein the polyisobutylene has a number average molecular weight of less than 15 claim 1 ,000 g/mole.5. The pressure sensitive adhesive composition of wherein the first or second functional group is an amine or imide and the other functional group is a carboxylic acid.6. The pressure sensitive adhesive composition of wherein the acrylic polymer is a copolymer of at least one alkyl(meth)acrylate and at least one carboxylic acid.7. The pressure sensitive adhesive composition of wherein the alkyl(meth)acrylate is a C4 to C20 alkyl(meth)acrylate.8. The pressure sensitive adhesive composition of wherein the alkyl(meth)acrylate is a C4 to C8 alkyl(meth)acrylate.9. The pressure sensitive adhesive composition of wherein the ...

Ceramic Shaped Abrasive Particles, Methods of Making the Same, and Abrasive Articles Containing the Same

A curable composition includes components: a) at least one ethylene-propylene-(nonconjugated diene) terpolymer; b) at least one ethylene-propylene copolymer; c) at least one bis(halomethyl)triazine crosslinker; and d) at least one tackifier. A weight ratio of component a) to component b) is in a range of from 15:85 to 85:15. A pressure-sensitive adhesive includes an at least partially crosslinked reaction product of the curable composition. Adhesive articles including the pressure-sensitive adhesive are disclosed. 2. The curable composition of claim 1 , wherein the components further comprise:e) at least one Type-I photoinitiator; andf) at least one polyfunctional (meth)acrylate.3. The curable composition of claim 1 , wherein the curable composition is hot melt extrudable.4. A method of making a pressure-sensitive adhesive claim 1 , the method comprising at least partially curing the curable composition of .5. The method of claim 4 , wherein the at least partially curing comprises exposing the curable composition to actinic radiation.7. The pressure-sensitive adhesive of claim 6 , wherein the components further comprise:e) at least one Type-I photoinitiator; andf) at least one polyfunctional (meth)acrylate.8. The pressure-sensitive adhesive of claim 6 , wherein a weight ratio of component a) to component b) is in a range of from 15:85 to 35:65.9. The pressure-sensitive adhesive of claim 6 , wherein a weight ratio of component a) to component b) is in a range of from 35:65 to 65:35.10. The pressure-sensitive adhesive of claim 6 , wherein component d) is present in an amount of from 50 to 150 parts by weight per hundred parts by weight of components a) and b) combined.11. The pressure-sensitive adhesive of claim 6 , wherein the tackifier comprises a hydrogenated tackifier.13. An adhesive article comprising a first pressure-sensitive adhesive according to adhered to a first major surface of a substrate.14. The adhesive article of claim 13 , wherein the first pressure- ...

DOUBLE COATED TAPE

Provided are double-coated tapes that include, in the following order: a first pressure-sensitive adhesive layer; a first plastic skin layer; an elastic base layer; a second plastic skin layer; and a second pressure-sensitive adhesive layer. The provided double-coated adhesive tapes can provide a combination of high bond strength, reworkability, and high impact and shock resistance, and can be easily converted using a die cutting process. 1. A double-coated tape comprising , in the following order:a first pressure-sensitive adhesive layer;a first plastic skin layer;an elastic base layer;a second plastic skin layer; anda second pressure-sensitive adhesive layer, wherein the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer are outermost layers on either side of the double-coated tape.2. The double-coated tape of claim 1 , wherein the elastic base layer comprises an elastomer selected from: styrenic block copolymers claim 1 , olefinic block copolymers claim 1 , thermoplastic polyolefins claim 1 , natural rubber claim 1 , styrene butadiene rubber claim 1 , ethylene propylene diene monomer claim 1 , polyisobutylene claim 1 , thermoplastic polyurethanes claim 1 , and blends and copolymers thereof.3. The double-coated tape of claim 1 , wherein the elastic base layer comprises claim 1 , in the following order:a first elastic film;a foam core; anda second elastic film.4. The double-coated tape of claim 3 , wherein the foam core accounts for 1 percent to 50 percent of the average thickness of the elastic base layer.5. The double-coated tape of claim 1 , wherein each of the first and second plastic skin layers comprises a polymer selected from: high density polyethylene claim 1 , low density polyethylene claim 1 , ethylene vinyl acetate copolymer claim 1 , polyurethane claim 1 , styrenic block copolymers claim 1 , polyamide-modified polyether claim 1 , and blends and copolymers thereof.6. The double-coated tape of claim 1 , wherein the ...

CHEMICAL RESISTANT POLYURETHANE ADHESIVE

A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of a polyisocyanate component and a polyol component. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm). 1. A pressure sensitive adhesive composition comprising a polyurethane polymer that comprises the reaction product of a polyisocyanate component and a polyol component; wherein the polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm).2. The pressure sensitive adhesive composition of wherein the polyol component has hydrogen bonding solubility parameter ranging from 3.5 to 6.3. The pressure sensitive adhesive composition of wherein the polyol component comprises a polyester polyol claim 1 , a polycaprolactone polyol claim 1 , a polycarbonate polyol claim 1 , or a combination thereof.4. The pressure sensitive adhesive composition of wherein the polyol component claim 1 , isocyanate component claim 1 , or combination thereof comprises at least one six-membered ring structure.5. The pressure sensitive adhesive composition of wherein the polyol component claim 1 , isocyanate component claim 1 , or combination thereof comprises alkylene groups having at least 4 claim 1 , 5 claim 1 , or 6 carbon atoms.6. The pressure sensitive adhesive of wherein the polyisocyanate component comprises a polyisocyanate that is a liquid at 25° C.7. The pressure sensitive adhesive of wherein the polyol component comprises repeat units of an ortho- or meta-phthalate claim 1 , and an alkylene group comprising at least 4 claim 1 , 5 or 6 carbon atoms.8. The pressure sensitive adhesive of claim 1 , wherein the polyurethane polymer comprises the reaction product of the polyisocyanate component claim 1 , the polyol component claim 1 , and a functional acid containing compound.9. The pressure sensitive adhesive of claim 8 , wherein the functional acid containing compound is represented by the generic formula (HX)RA; wherein A ...

SILICON-ON-INSULATOR DEVICE AND INTERMETALLIC DIELECTRIC LAYER STRUCTURE THEREOF AND MANUFACTURING METHOD

Provided is an intermetallic dielectric layer structure of a silicon-on-insulator device, comprising a silicon-rich oxide layer () covering a metal interconnect, a fluorine-silicon glass layer on the silicon-rich oxide layer, and a non-doped silicate glass layer on the fluorine-silicon glass layer; the thickness of the silicon-rich oxide layer () is 700 angstroms ±10%; the silicon-rich oxide layer having a greater thickness captures movable ions on an unsaturated bond, such that it is difficult for the movable ions to pass through the silicon-rich oxide layer, thus blocking the movable ions. The present invention has good performance in an integrity evaluation of the gate oxide layer, and avoids damage to the device caused by the aggregation of movable ions at an interface. Also provided are a silicon-on-insulator device and a method of manufacturing the intermetallic dielectric layer of the silicon-on-insulator device. 1. An intermetallic dielectric layer structure of a silicon-on-insulator device , comprising: a Si-rich oxide layer covering a metal interconnection , a fluorine-silicon glass layer formed on the Si-rich oxide layer , and an undoped silicate glass layer formed on the fluorine-silicon glass layer; wherein a thickness of the Si-rich oxide layer is 700 angstroms ±10%.2. The intermetallic dielectric layer structure of the silicon-on-insulator device of claim 1 , characterized in that claim 1 , the Si-rich oxide layer is an in-situ Si-rich oxide layer.3. The intermetallic dielectric layer structure of the silicon-on-insulator device of claim 1 , characterized in that claim 1 , a thickness of the undoped silicate glass layer is 2000 angstroms ±10%.4. The intermetallic dielectric layer structure of the silicon-on-insulator device of claim 1 , further comprising a silicon nitride layer provided between the metal interconnection and the fluorine-silicon glass layer.5. A silicon-on-insulator device claim 1 , comprising a substrate claim 1 , a buried oxide ...

BLENDS FOR PRESSURE SENSITIVE ADHESIVES USED IN PROTECTIVE FILMS

There is provided an article comprising: a) a protective film comprising a thermoplastic film having a first side and a second side, and a pressure sensitive adhesive composition adhesively attached to at least one of the first side or the second side of the thermoplastic film, wherein the pressure sensitive adhesive composition comprises a blend of: i) an aqueous based pressure sensitive adhesive latex; ii) a low adhesion additive; and iii) a crosslinker; and b) a metal substrate adhesively attached to a side of the pressure sensitive adhesive composition opposite the thermoplastic film. There is also provided a pressure sensitive adhesive composition comprises a blend of: i) an aqueous based pressure sensitive adhesive latex; ii) a low adhesion additive; and iii) a cross linker. 1. An article comprising: i) an aqueous based pressure sensitive adhesive latex;', 'ii) a low adhesion additive; and', 'iii) a crosslinker; and, 'a) a protective film comprising a thermoplastic film having a first side and a second side, and a pressure sensitive adhesive composition adhesively attached to at least one of the first side or the second side of the thermoplastic film, wherein the pressure sensitive adhesive composition comprises a blend ofb) a metal substrate adhesively attached to a side of the pressure sensitive adhesive composition opposite the thermoplastic film.2. The article of wherein the low adhesion additive is selected from at least one of an acrylic emulsion claim 1 , a particulate dispersion and a rubber emulsion.3. The article of wherein the aqueous based pressure sensitive adhesive latex comprises at least one acrylate polymer.4. The article of wherein the aqueous based pressure sensitive latex comprises a stabilizer selected from at least one of a cationic stabilizer claim 1 , anionic stabilizer claim 1 , a non-ionic stabilizer claim 1 , and an amphoteric stabilizer.5. The article of wherein the rubber emulsion comprises a (poly)isoprene latex.6. The article of ...

ACRYLIC ADHESIVES HAVING CHEMICAL RESISTANCE

This disclosure is directed at specific acrylic PSA compositions that are capable of resisting a broad array of solvents. Acrylic PSA's primarily derived from C?1#191-C?4#191 acrylate monomers and functional acrylates exhibit a strong resistance to a wide array of solvents, including both polar and non-polar solvents. 1. A composition comprising an acrylic pressure sensitive adhesive derived from the reaction product of:(a) about 20 percent by weight to about 60 percent by weight of a methyl acrylate,(b) about 40 percent by weight to about 80 percent by weight of a monomer comprising ethyl acrylate, propyl acrylate, butyl acrylate, or combinations thereof,(c) about 0.2 percent by weight to about 5 percent by weight of a functional acrylate monomer, and(d) a crosslinking agent.2. A composition according to claim 1 , wherein the functional acrylate monomer comprises hydroxyethyl (meth)acrylate claim 1 , hydroxypropyl (meth)acrylate claim 1 , hydroxybutyl (meth)acrylate claim 1 , isocyanatoethyl (meth)acrylate claim 1 , (meth)acrylic acid claim 1 , glycidyl (meth)acrylate or combinations thereof.3. A composition according to claim 1 , wherein the crosslinking agent comprises compounds containing functional groups selected from hydoxy claim 1 , carboxylic claim 1 , isocyanate claim 1 , epoxy and azilidine.4. A composition according to claim 1 , wherein the acrylic pressure sensitive adhesive exhibits a resistance to polar and non-polar solvents as demonstrated by a solvent swell ratio of 1.8 or less after immersion in a 1:1 water and isopropyl alcohol mixture in accordance with the Swelling Ratio Test and solvent swell ratio of 1.5 or less after immersion in oleic acid in accordance with Swelling Ratio Test.5. A composition according to claim 1 , wherein the acrylic pressure sensitive adhesive exhibits a peel adhesion strength of 0.7 N/mm or greater in accordance with the Peel Adhesion Test.6. An article comprising an acrylic pressure sensitive adhesive assembly having ...

PRESSURE SENSITIVE ADHESIVE FOAMS AND ARTICLES THEREFROM

There is provided a pressure sensitive adhesive foam comprising a foam comprising a non-syntactic foam blend of styrenic block copolymer and acrylic copolymer wherein the pressure-sensitive adhesive foam has an elongation of greater than 600%, wherein the non-syntactic foam blend is a hot melt formed foam. There is also provided multilayer pressure sensitive adhesive foams, pressure sensitive adhesive foam tapes and articles made using such pressure sensitive adhesive foam. 1. A pressure sensitive adhesive foam comprising a foam comprising a non-syntactic foam blend of styrenic block copolymer and acrylic copolymer wherein the pressure-sensitive adhesive foam has an elongation of greater than 600% , wherein the non-syntactic foam blend is a hot melt formed foam.2. The pressure sensitive adhesive foam of further comprising a total thickness of less than 0.51 mm (25 mils).3. The pressure sensitive adhesive foam of wherein the non-syntactic foam blend has a density of greater than 0.6 g/cm.4. The pressure sensitive adhesive foam of wherein the non-syntactic foam blend has a density of greater than 0.7 g/cm.5. The pressure sensitive adhesive foam of wherein the foam is a halogen-free foam containing substantially no halogen compound by design.6. The pressure sensitive adhesive foam according to wherein the foam further comprises a color additive.7. A multilayer pressure sensitive adhesive foam comprising the pressure sensitive adhesive foam of and further comprising at least one pressure sensitive adhesive layer on a first major surface of the foam.8. The multilayer pressure sensitive adhesive foam of further comprising a second pressure sensitive adhesive layer on a second major surface of the foam opposite the first major surface of the foam.9. A pressure sensitive adhesive foam tape comprising the pressure sensitive adhesive foam or multilayer pressure sensitive adhesive foam of and further comprising a backing layer.10. The multi layer pressure sensitive adhesive ...

PRESSURE-SENSITIVE ADHESIVE COMPOSITION

Disclosed is an adhesive composition comprising a low T(meth)acrylate copolymer component, a high T(meth)acrylate copolymer component, and a hydrogenated hydrocarbon tackifier. This disclosure provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles that are particularly useful in the bonding of low surface energy (LSE) substrates. 1. An adhesive composition comprising:{'sub': 'g', 'claim-text': [{'sub': 1', '18, 'i. C-C(meth)acrylic acid ester monomer units;'}, 'ii. acid functional ethylenically unsaturated monomer units;', 'iii. optionally non-acid functional, ethylenically unsaturated polar monomer units;', 'iv. optionally vinyl monomer units; and', 'v. optionally a multifunctional (meth)acrylate, and, 'a) 60 parts by weight or greater of a low T(meth)acrylate copolymer component comprising'}{'sub': 'g', 'claim-text': [{'sub': 'g', 'i. high T(meth)acrylic acid ester monomer units;'}, 'ii) optional acid functional ethylenically unsaturated monomer units;', {'sub': 'g', 'iii) optional low T(meth)acrylic acid ester monomer units;'}, 'iv) optional non-acid functional, ethylenically unsaturated polar monomer units;', 'v) optional vinyl monomer units; and, 'b) up to 40 parts by weight of a high Tacrylate copolymer having a Mw>20 k comprisingc) 0.1 to 20 parts be weight of a hydrogenated hydrocarbon tackifier, based on 100 parts by weight of a), and b).2. The adhesive composition of wherein the low Tsolute copolymer has a Tof <20° C.3. The adhesive composition of wherein the high T(meth)acrylate copolymer has a Tof >50° C.4. The adhesive composition of wherein the low T(meth)acrylate copolymer component comprises syrup copolymer comprising a solute low Tcopolymer in solvent monomer(s).5. The adhesive composition of wherein the low Tsolute copolymer comprises:i. 85 to 99.5 parts by weight of an (meth)acrylic acid ester;ii. 0.5 to 15 parts by weight of an acid functional ethylenically unsaturated monomer;iii. 0 to 10 parts by weight of a non-acid ...

MULTILAYER PRESSURE SENSITIVE ADHESIVE ASSEMBLY

The present disclosure relates to a multilayer pressure sensitive adhesive assembly comprising at least a first pressure sensitive adhesive layer superimposed to a second polymer layer, wherein a curable liquid precursor of the first pressure sensitive adhesive polymer layer comprises a low Tg (meth)acrylate copolymer and a high Tg (meth)acrylate copolymer having a weight average molecular weight (Mw) of above 20,000 Daltons. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive assembly and uses thereof. 1. A method for manufacturing a multilayer pressure sensitive adhesive assembly comprising at least a first pressure sensitive adhesive polymer layer superimposed to a second polymer layer , the method comprising the steps of:a) providing a substrate;b) providing a curable liquid precursor of the first pressure sensitive adhesive polymer layer and a curable liquid precursor of the second polymer layer as superimposed layers onto the substrate;c) optionally, providing one or more solid films and applying these essentially simultaneously with the formation of the adjacent lower polymer layer; andd) curing the precursor of the multilayer pressure sensitive adhesive assembly thus obtained;wherein the curable liquid precursor of the first pressure sensitive adhesive polymer layer comprises: [{'sub': 1', '32, 'i. C-C(meth)acrylic acid ester monomer units;'}, 'ii. optionally, acid functional ethylenically unsaturated monomer units;', 'iii. optionally, non-acid functional, ethylenically unsaturated polar monomer units;', 'iv. optionally, vinyl monomer units; and', 'v. optionally, multifunctional (meth)acrylate monomer units, and, 'a) 60 parts by weight or greater of a low Tg (meth)acrylate copolymer comprising i. high Tg (meth)acrylic acid ester monomer units;', 'ii. optionally, acid functional ethylenically unsaturated monomer units;', 'iii. optionally, low Tg (meth)acrylic acid ester monomer units;', 'iv. optionally, non-acid ...

LOW SURFACE ENERGY ADHESIVE

Adhesives suitable for use with low surface energy materials are described. The adhesive contain an acrylic copolymer, a high glass transition temperature tackifier and a low glass transition temperature tackifier. The acrylic copolymer is the reaction product of a first alkyl(meth)acrylate having at least 5 carbon atoms in the alkyl group, a second alkyl(meth)acrylate having 1 to 4 carbon atoms in the alkyl group, and a vinyl carboxylic acid. Both tackifiers have a Tg greater than the Tg of the acrylic copolymer. The high glass transition temperature tackifier has a Tg of at least 20° C. and the low glass transition temperature tackifier has a Tg of less than 0° C. 2. The adhesive according to claim 1 , wherein the adhesive comprises 40 to 55% by weight total tackifier content based on the total weight of the acrylic copolymer claim 1 , the high Tg tackifier and the low Tg tackifier.3. The adhesive according to claim 1 , further comprising a crosslinker.4. The adhesive of claim 3 , wherein the crosslinker is a covalent crosslinker selected from the group consisting of bisamides claim 3 , epoxies claim 3 , and melamines.5. The adhesive of claim 3 , wherein the crosslinker is an ionic crosslinking agent claim 3 , wherein the ionic crosslinking agent is selected from the group consisting of multifunctional amines claim 3 , metal oxides claim 3 , and organo-metallic chelating agents.6. The adhesive according to claim 1 , further comprising an additional component selected from the group consisting of fillers claim 1 , dyes claim 1 , pigments claim 1 , antioxidants claim 1 , UV-stabilizers.7. The adhesive according to claim 1 , wherein the glass transition temperature of the adhesive is no greater than 260 K claim 1 , as calculated using the Fox Equation.8. The adhesive according to claim 6 , wherein the fillers are fumed silica.9. The adhesive according to claim 6 , wherein the fillers are nanoparticles.10. The adhesive according to claim 9 , wherein the nanoparticles ...

IMPACT-RESISTANT POLYESTER PRESSURE-SENSITIVE ADHESIVE

Polyester pressure-sensitive adhesives are described. The polyester includes at least two different diacid residues and at least two different diol residues. The polyester includes at least one pendant group containing an alkenyl group. A ratio of a total number of the at least one pendant group to the total number of ester groups in the polyester is in a range of 0.001 to 0.1. The polyester has a glass transition temperature in a range of −50° C. to −10° C. 1. A polyester comprising:at least two different diacid residues;at least two different diol residues;wherein the polyester comprises at least one pendant group containing an alkenyl group, a ratio of a total number of the at least one pendant group to the total number of ester groups in the polyester being in a range of 0.001 to 0.1,wherein the polyester has a glass transition temperature in a range of −50° C. to −10° C., andwherein the polyester is a pressure-sensitive adhesive.2. The polyester of claim 1 , wherein the at least two different diacid residues comprises the at least one pendant group.3. The polyester of claim 1 , wherein the at least two different diol residues comprises the at least one pendant group.4. The polyester of claim 1 , wherein the at least two different diol residues comprises claim 1 , based on the total moles of the at least two different diol residues claim 1 , 0.1 to 10 percent of a residue of trimethylolpropane monoallyl ether.5. The polyester of claim 1 , wherein the alkenyl group is an allyl group.6. The polyester of claim 1 , wherein the alkenyl group is an allyloxy group.7. The polyester of claim 1 , wherein the at least two different diacid residues comprises a residue of at least one aromatic dicarboxylic acid.8. The polyester of claim 7 , wherein the residue of the at least one aromatic dicarboxylic acid comprises a residue of at least one of isophthalic acid claim 7 , phthalic acid claim 7 , terephthalic acid claim 7 , bibenzoic acid claim 7 , and naphthalic acid.9. The ...

CHEMICAL-RESISTANT POLYESTER PRESSURE-SENSITIVE ADHESIVE

Polyester pressure-sensitive adhesives are described. The polyester includes at least two different diacid residues and at least two different diol residues. The at least two different diacid residues include, based on the total moles of the at least two diacid residues, 20 to 80 mole percent of a residue of at least one aromatic dicarboxylic acid, and 20 to 80 mole percent of at least one of a residue of adipic acid or sebacic acid. The polyesters may include at least one pendant group containing an alkenyl group. 1. A polyester comprising: 20 to 80 mole percent of a residue of at least one aromatic dicarboxylic acid; and', '20 to 80 mole percent of at least one of a residue of adipic acid or sebacic acid; and, 'at least two different diacid residues, the at least two different diacid residues comprising, based on the total moles of the at least two diacid residues at least 5 mole percent of a first diol residue;', 'at least 5 mole percent of a different second diol residue; and', '0.1 to 10 mole percent of a residue of trimethylolpropane monoallyl ether, wherein each of the first and second diol residues is a residue of ethylene glycol, 1,6-hexanediol, 1,4-butanediol, neopentyl glycol, or 1,4-cyclohexanedimethanol., 'at least three different diol residues, the at least three different diol residues comprising, based on the total moles of the at least three different diol residues2. The polyester of claim 1 , wherein the residue of the at least one aromatic dicarboxylic acid comprises a residue of at least one of isophthalic acid claim 1 , phthalic acid claim 1 , terephthalic acid claim 1 , bibenzoic acid claim 1 , and naphthalic acid.3. The polyester of claim 1 , wherein the at least three different diol residues comprises claim 1 , based on the total moles of the at least three different diol residues claim 1 , 0.5 to 5 mole percent of the residue of trimethylolpropane monoallyl ether.5. The polyester of claim 4 , wherein the at least two different diol residues ...

OLEFINIC BLOCK COPOLYMER BASED PRESSURE SENSITIVE ADHESIVES

Composition blends are prepared that are hot melt processable pressure sensitive adhesives. The composition blends include at least one olefinic block copolymer, at least one elastomeric polymer, and at least one tackifying resin. The composition blends may also include additional components, such as for example, at least one plasticizer. The composition blends can be used to prepare articles, such as tapes, by disposing the hot melt processable pressure sensitive adhesive blend composition on at least a portion of a substrate 1. A composition blend comprising:at least one olefinic block copolymer;at least one elastomeric polymer; andat least one tackifying resin, wherein the blend comprises a hot melt processable pressure sensitive adhesive.2. The composition of claim 1 , wherein the composition blend comprises:10-70% by weight olefinic block copolymer;1-70% by weight elastomeric polymer; and10-70% by weight tackifying resin.3. The composition of claim 1 , wherein the olefinic block copolymer comprises at least one block comprising crystalline ethylene and at least one block comprising at least one C-Calpha-olefin.4. The composition of claim 3 , wherein the at least one block comprising crystalline ethylene comprises less than 30% by weight of the olefinic block copolymer.5. The composition of claim 1 , wherein the olefinic block copolymer has a density of less than 0.90 g/cm(grams per cubic centimeter) claim 1 , and a melt temperature of from about 100° C. to about 120° C.6. The composition of claim 1 , wherein the elastomeric polymer has a storage modulus at 25° C. measured at a rate of 1 Hertz claim 1 , of less than 2×10Pascals.7. The composition of claim 1 , wherein the elastomeric polymer comprises a styrene-based block copolymer claim 1 , a (meth)acrylate based copolymer claim 1 , or a polyolefin elastomer.8. The composition of claim 7 , wherein the styrene-based block copolymer comprises a styrene-isoprene-styrene block copolymer claim 7 , a styrene- ...

Polyurethane laminating adhesive composition

There is provided an adhesive composition comprising at least 50 wt % of an aqueous dispersion of an amorphous polyurethane having a Tg below 25° C.; and a water dispersible cross-linker, where the adhesive composition has a peel retention of greater than or equal to 5% according to the Water/IPA Exposure Test.

ADHESIVE ARTICLES INCLUDING A CUSHION LAYER AND A DISCONTINUOUS SHELL LAYER

An adhesive article including: a flexible backing; a first cushion layer permanently bonded to a first surface of the flexible backing, wherein the first cushion layer: has an average thickness of at least 10 micrometers; and includes an acrylate pressure-sensitive adhesive having a Fox Tg of up to −30° C., wherein the acrylate pressure-sensitive adhesive includes a (meth)acrylate copolymer; and a first discontinuous shell layer adjacent the first cushion layer, wherein: the first discontinuous shell layer has an average thickness of up to 25 micrometers; the ratio of the first cushion layer average thickness to the first shell layer average thickness is at least 2:1; the first discontinuous shell layer includes an adhesive having a Fox Tg of +10° C. to +50° C.; and the first discontinuous shell layer adhesive includes a copolymer having a weight average molecular weight of at least 100,000 Daltons. 2. The adhesive article of wherein the acrylate pressure-sensitive adhesive of the first cushion layer and/or the second cushion layer has a Fox Tg of at least −85° C.3. The adhesive article of wherein the ratio of the first cushion layer average thickness to the first shell layer average thickness and/or the second cushion layer average thickness to the second shell layer average thickness is at least 3:1 and up to 300:1.4. The adhesive article of wherein the first cushion layer and/or the second cushion layer (meth)acrylate copolymer comprises one or more (meth)acrylate monomeric units of Formula (I) wherein Ris an alkyl group having 1 to 24 carbon atoms.5. The adhesive article of wherein the first cushion layer and/or the second cushion layer (meth)acrylate copolymer comprises one or more (meth)acrylate monomeric units of Formula (I) derived from monomers selected from the group of 2-ethylhexyl (meth)acrylate claim 4 , methyl (meth)acrylate claim 4 , ethyl (meth)acrylate claim 4 , n-butyl (meth)acrylate claim 4 , isobutyl (meth)acrylate claim 4 , cyclohexyl (meth) ...

CHEMICAL RESISTANT POLYURETHANE ADHESIVE

A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of an aliphatic polyisocyanate component, a polyol component, and a functional acid containing compound. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm). 1. A pressure sensitive adhesive composition comprising a polyurethane polymer that comprises the reaction product of an aliphatic polyisocyanate component , a polyol component , and a functional acid containing compound; wherein the polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm); and wherein the pressure sensitive adhesive has a G′ less than 1 MPa at 25° C. and a frequency of 1 hertz.2. The pressure sensitive adhesive composition of wherein the polyol component has hydrogen bonding ranging from 3.5 to 6.3. The pressure sensitive adhesive composition of wherein the polyol component comprises a polyester polyol claim 1 , a polycaprolactone polyol claim 1 , a polycarbonate polyol claim 1 , or a combination thereof.4. The pressure sensitive adhesive composition of wherein the polyol component claim 1 , aliphatic isocyanate component claim 1 , or combination thereof comprises at least one six-membered ring structure.5. The pressure sensitive adhesive composition of wherein the polyol component claim 1 , aliphatic isocyanate component claim 1 , or combination thereof comprises alkylene groups having at least 4 claim 1 , 5 claim 1 , or 6 carbon atoms.6. The pressure sensitive adhesive composition of wherein the aliphatic polyisocyanate component comprises a polyisocyanate that is a liquid at 25° C.7. The pressure sensitive adhesive composition of wherein the polyol component comprises repeat units of an ortho- or meta-phthalate claim 1 , and an alkylene group comprising at least 4 claim 1 , 5 or 6 carbon atoms.8. A pressure sensitive adhesive composition comprisinga polyurethane polymer, wherein the polyurethane polymer comprises the reaction ...

ADHESIVE ARTICLES INCLUDING A CUSHION LAYER AND A CONTINUOUS SHELL LAYER

An adhesive article including: a flexible backing; a first cushion layer permanently bonded to a first surface of the flexible backing, wherein the first cushion layer: has an average thickness of at least 10 micrometers; and includes an acrylate pressure-sensitive adhesive having a Fox Tg of up to −30° C., wherein the acrylate pressure-sensitive adhesive includes a (meth)acrylate copolymer; and a first continuous shell layer adjacent the first cushion layer, wherein: the first continuous shell layer has an average thickness of up to 25 micrometers; the ratio of the first cushion layer average thickness to the first shell layer average thickness is at least 2:1; the first continuous shell layer includes an adhesive having a Fox Tg of −20° C. to +50° C.; and the first continuous shell layer adhesive includes a copolymer having a weight average molecular weight of at least 100,000 Daltons. 2. The adhesive article of wherein the acrylate pressure-sensitive adhesive of the first cushion layer has a Fox Tg of at least −85° C.3. The adhesive article of wherein the ratio of the first cushion layer average thickness to the first shell layer average thickness is at least 3:1 and up to 300:1.4. The adhesive article of wherein the first cushion layer (meth)acrylate copolymer comprises one or more (meth)acrylate monomeric units of Formula (I) wherein Ris an alkyl group having 1 to 24 carbon atoms.5. The adhesive article of wherein the first cushion layer (meth)acrylate copolymer comprises one or more (meth)acrylate monomeric units of Formula (I) derived from monomers selected from the group of 2-ethylhexyl (meth)acrylate claim 4 , methyl (meth)acrylate claim 4 , ethyl (meth)acrylate claim 4 , n-butyl (meth)acrylate claim 4 , isobutyl (meth)acrylate claim 4 , cyclohexyl (meth)acrylate claim 4 , hexyl (meth)acrylate claim 4 , 2-octyl (meth)acrylate claim 4 , isooctyl (meth)acrylate claim 4 , isononyl (meth)acrylate claim 4 , isobornyl (meth)acrylate claim 4 , norbornyl (meth) ...

Olefin block copolymer based pressure sensitive adhesives

Composition blends are prepared that are hot melt processable pressure sensitive adhesives. The composition blends include at least one olefinic block copolymer, at least one elastomeric polymer, and at least one tackifying resin. The composition blends may also include additional components, such as for example, at least one plasticizer. The composition blends can be used to prepare articles, such as tapes, by disposing the hot melt processable pressure sensitive adhesive blend composition on at least a portion of a substrate

Pressure sensitive adhesive comprising blend of synthetic rubber and functionalized synthetic rubber bonded to an acylic polymer

A pressure sensitive adhesive composition is described comprising unfunctionalized (e.g. polyisobutylene) synthetic rubber and an acrylic polymer having functionalized polyisobutylene polymer bonded to the acrylic polymer. In some embodiments, the functionalized polyisobutylene polymer has a first functional group hydrogen bonded with a second functional group present in the acrylic polymer backbone. In other embodiments, the functionalized polyisobutylene polymer is covalently bonded to the acrylic polymer backbone. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.

Pressure sensitive adhesive comprising functionalized polyisobutylene hydrogen bonded to acylic polymer

A pressure sensitive adhesive composition is described comprising a polyisobutylene polymer having a first functional group and an acrylic polymer having a second functional group present in the acrylic polymer backbone. The first and second functional groups form a hydrogen bond. In some embodiments, the adhesive composition further comprises a crosslinker that covalently crosslinks the second functional group(s) present in the polymer backbone of the acrylic polymer. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.

Long lasting outdoor tape

The present invention is directed to an article comprising a backing, the backing comprising a multilayer film comprising a light shielding additive. In certain embodiments, the backing is greater than about 2% by weight light shielding additive, in some examples the backing is between about 3% to about 35% by weight light shielding additive. The invention is also directed to an adhesive article comprising a backing and an adhesive layer on the backing, wherein the adhesive article has less than 10% adhesive transfer after 500 hours of weathering according to ASTM G155 Cycle 1.

Low surface energy adhesive

Adhesives suitable for use with low surface energy materials are described. The adhesive contain an acrylic copolymer, a high glass transition temperature tackifier and a low glass transition temperature tackifier. The acrylic copolymer is the reaction product of a first alkyl(meth)acrylate having at least 5 carbon atoms in the alkyl group, a second alkyl(meth)acrylate having 1 to 4 carbon atoms in the alkyl group, and a vinyl carboxylic acid. Both tackifiers have a Tg greater than the Tg of the acrylic copolymer. The high glass transition temperature tackifier has a Tg of at least 20° C. and the low glass transition temperature tackifier has a Tg of less than 0° C.

Block copolymer hot-melt processable adhesives, methods of their preparation, and articles therefrom

Hot-melt processable adhesive, such as pressure-sensitive-adhesive (PSA) or heat-activatable adhesive, compositions of the present invention possess a broad formulation latitude and adequate cohesive strength after application for use in high performance applications. Hot-melt processable adhesives of the invention comprise at least one block copolymer comprising at least two A blocks and at least one B block. The A and B blocks are derived from monoethylenically unsaturated monomers, which monomers result in saturated polymer backbones without the need for subsequent hydrogenation upon their polymerization. Preferably, the block copolymer is a (meth)acrylate block copolymer.

Adhesive for bonding to low surface energy surfaces

A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Block copolymer melt-processable compositions, methods of their preparation, and articles therefrom

Described are melt-processable block copolymers and compositions, embodiments of which may be useful in applications such as pressure sensitive adhesive (PSA) or heat-activatable adhesive, comprising polymeric end block and polymeric B block, wherein end block comprises copolymer and the B block comprises homopolymer or copolymer.

Block copolymer hot-melt processable adhesives, methods of their preparation, and articles therefrom

Hot-melt processable adhesive, such as pressure-sensitive-adhesive (PSA) or heat-activatable adhesive, compositions of the present invention possess a broad formulation latitude and adequate cohesive strength after application for use in high performance applications. Hot-melt processable adhesives of the invention comprise at least one block copolymer comprising at least two A blocks and at least one B block. The A and B blocks are derived from monoethylenically unsaturated monomers, which monomers result in saturated polymer backbones without the need for subsequent hydrogenation upon their polymerization. Preferably, the block copolymer is a (meth)acrylate block polymer.

Pressure sensitive adhesive comprising a block copolymer having low molecular weight endblocks and endblock-compatible tackifier or oil

The present invention provides a block copolymer pressure sensitive adhesive (PSA) composition. The block copolymer has at least one midblock segment and at least one endblock segment. The midblock comprises a polymerized conjugated diene segment or hydrogenated derivative thereof. The endblock comprises a polymerized monovinyl aromatic segment having a number average molecular weight less than about 8,000. The PSA further comprises at least one tackifier or oil that is compatible with the low molecular weight endblock segment of the block copolymer. The PSA composition of the invention has a reduced elastic index and is capable of dissipating stress. This is useful in providing tapes which are capable of withstanding stresses such as those caused by temperature fluctuations, dimensional changes in the backing, or the recovery forces of a backing applied under tension. The present invention also provides a method of reducing the elastic index of a block copolymer PSA composition.

Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives

An adhesive blend is comprised of a hydrophilic pressure sensitive adhesive comprising the polymerization product of (a) about 15 to about 85 parts by weight of an (meth)acrylate ester monomer wherein the (meth)acrylate ester monomer, when polymerized, has a glass transition temperature (Tg) of less than about 10.ordm.C; (b) about 85 to about 15 parts by weight of a hydroplhilic acidic comonomer; and (c) at least about 10 parts based on 100 parts of the sum of components (a) + (b) of a non-reactive plasticizing agen t and a hydrophobic pressure sensitive adhesive comprising an elastomer or thermplastic elastomer including styrene block copolymers (e.g., linear, radial, tapered, star) consisting of copolymerized styrene and isoprene, butadiene or ethylene-butlene; polyisoprene; polybutadiene; polyisobutylene; butyl rubber; styrene-butadiene rubber; natural rubber; and poly-.alpha.- olefins (e.g., polyhexene, polyoctene and propylene-hexene).

MIXTURES FOR PRESSURE SENSITIVE ADHESIVES USED IN PROTECTIVE FILMS

MISTURAS PARA ADESIVOS SENSÍVEIS À PRESSÃO USADAS EM FILMES PROTETORES A presente invenção refere-se a um artigo que compreende: a) um filme protetor que compreende um filme termoplástico tendo um primeiro lado e um segundo lado, e uma composição adesiva sensível à pressão unida de modo adesivo a pelo menos um dentre o primeiro lado ou o segundo lado do filme protetor, sendo que a composição adesiva sensível à pressão compreende uma mistura de: i) um látex adesivo de base aquosa sensível à pressão; ii) um aditivo de baixa adesão; e iii) um reticulador; e b) um substrato metálico unido de modo adesivo a um lado da composição adesiva sensível à pressão oposta ao filme termoplástico. É também fornecida uma composição adesiva sensível à pressão que compreende uma mistura de: i) um látex adesivo de base aquosa sensível à pressão; ii) um aditivo de baixa adesão; e iii) um reticulador.

Pressure sensitive adhesive comprising a block copolymer having low molecular weight endblocks and endblock-compatible tackifier or oil

The present invention provides a block copolymer pressure sensitive adhesive (PSA) composition. The block copolymer has at least one midblock segment and at least one endblock segment. The midblock comprises a polymerized conjugated diene segment or hydrogenated derivative thereof. The endblock comprises a polymerized monovinyl aromatic segment having a number average molecular weight less than about 8,000. The PSA further comprises at least one tackifier or oil that is compatible with the low molecular weight endblock segment of the block copolymer. The PSA composition of the invention has a reduced elastic index and is capable of dissipating stress. This is useful in providing tapes which are capable of withstanding stresses such as those caused by temperature fluctuations, dimensional changes in the backing, or the recovery forces of a backing applied under tension. The present invention also provides a method of reducing the elastic index of a block copolymer PSA composition.

Chemical resistant polyurethane adhesive

Pressure-sensitive adhesive compositions for manufacturing electronic devices

The present disclosure relates to an electronic device comprising at least one organic light-emitting diode and a pressure sensitive adhesive composition comprising a synthetic rubber block (co)polymer, and wherein the pressure sensitive adhesive composition has: a) a relative permittivity no greater than 2.50, when measured at an alternating current frequency of 100 kHz according to the test method described in the experimental section; b) a water uptake no greater than 0.60 wt%, when measured after exposure to 60°C and 95% relative humidity for 120 hours, according to the test method described in the experimental section; and c) optionally, a peel adhesion value above 0.20 N/mm, when measured at 85°C according to the test method described in the experimental section. In another aspect, the present disclosure is directed to a method of manufacturing an electronic device comprising at least one organic light-emitting diode, wherein the method comprises the step of using a pressure sensitive adhesive composition as described above. According to still another aspect, the present disclosure is directed to the use of a pressure sensitive adhesive composition as described above for protecting organic light-emitting devices or organic light-emitting diodes from moisture and air permeation.

Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives

An adhesive blend is comprised of a hydrophilic pressure sensitive adhesive comprising the polymerization product of (a) about 15 to about 85 parts by weight of an (meth)acrylate ester monomer wherein the (meth)acrylate ester monomer, when polymerized, has a glass transition temperature (Tg) of less than about 10ºC; (b) about 85 to about 15 parts by weight of a hydroplhilic acidic comonomer; and (c) at least about 10 parts based on 100 parts of the sum of components (a) + (b) of a non-reactive plasticizing agent and a hydrophobic pressure sensitive adhesive comprising an elastomer or thermplastic elastomer including styrene block copolymers (e.g., linear, radial, tapered, star) consisting of copolymerized styrene and isoprene, butadiene or ethylene-butlene; polyisoprene; polybutadiene; polyisobutylene; butyl rubber; styrene-butadiene rubber; natural rubber; and poly-α-olefins (e.g., polyhexene, polyoctene and propylene-hexene).

Adhesive for bonding to low surface energy surfaces

A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Multi-arm block copolymer, and pressure sensitive adhesive and tape employing a multi-arm elastomeric block copolymer

The present invention provides a novel pressure-sensitive adhesive made from a multi-arm elastomeric block copolymer, and a novel tape made therefrom. The multi-arm block copolymer has the general structure (A'-B)m Y wherein A' and B are polymer segments, Y is a residue of a multifunctional coupling agent and m is the number of arms and is at least 3. A' comprises a random copolymer of a monoalkenylarene and a conjugated diene, wherein the Tg of A' is less than 19°C. B comprises either a homopolymer of a conjugated diene or a polymer of two or more conjugated dienes.

Non-halogentaed polyisobutylene-thermoplastic elastomer blend pressure sensitive adhesives

Chemical resistant polyurethane adhesive

Multilayer Pressure Sensitive Adhesive Assembly

The present disclosure relates to a multilayer pressure sensitive adhesive assembly comprising at least a first pressure sensitive adhesive layer superimposed to a second polymer layer, wherein a curable liquid precursor of the first pressure sensitive adhesive polymer layer comprises a low Tg (meth)acrylate copolymer and a high Tg (meth)acrylate copolymer having a weight average molecular weight (Mw) of above 20,000 Daltons. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive assembly and uses thereof.

A kind of sulfonation dumping mud treatment system

本实用新型公开了一种磺化废弃泥浆处理系统，其中流化罐、筛分装置、第一均质罐以及离心装置依次通过管道连通，离心装置的固相出口与第二均质罐通过管道连通，第二均质罐与压滤装置连接；离心装置液相出口和压滤装置的液相出口均通过管道与缓存装置连通，缓存装置、气浮装置、电絮凝装置及双重过滤装置依次通过管道连通，双重过滤装置的浓水出口端与MVR蒸汽处理装置连通；双重过滤装置的清水出口端通过管道与加药罐连通，加药罐的出口端与流化罐的进口连接。本实用新型能够对磺化废弃泥浆进行有效处理，处理之后能够达到排放的标准，从根本上解决了磺化废弃泥浆对土壤和水质造成严重污染的问题。

Pressure sensitive adhesives and articles including radial block and acrylic polymers

Pressure sensitive adhesive compositions and articles, wherein the adhesive includes at least one acrylate pressure sensitive adhesive component and at least one thermoplastic elastomer-based pressure sensitive adhesive component. The acrylate component includes at least one polymerized monofunctional (meth)acrylic acid ester monomer having a Tg of no greater than about 0° C. when homopolymerized, and 0 to about 10 wt % of at least one copolymerized monofunctional ethylenically unsaturated monomer having a Tg of at least about 10° C. when homopolymerized. The thermoplastic elastomer-based pressure sensitive adhesive component includes a radial block copolymer.

Blends for pressure sensitive adhesives used in protective films.

Se proporciona un artículo que comprende: a) una película protectora que comprende una película termoplástica que tiene un primer lado y un segundo lado, y una composición de adhesivo sensible a la presión unida de manera adhesiva a por lo menos uno del primer lado o el segundo lado de la película termoplástica, en donde la composición de adhesivo sensible a la presión comprende una mezcla de: i) un látex adhesivo sensible a la presión de base acuosa; ii) un aditivo de adhesión baja; y iii) un agente de reticulación; y b) un sustrato metálico unido de manera adhesiva a un lado de la composición de adhesivo sensible a la presión opuesto a la película termoplástica. Se proporciona, además, una composición de adhesivo sensible a la presión; la composición comprende una mezcla de: i) un látex adhesivo sensible a la presión de base acuosa; ii) un aditivo de adhesión baja; y iii) un agente de reticulación.

Adhesive blends comprising hydrophilic and hydrophobic pressure sensitive adhesives

Adhesive for bonding to low surface energy surfaces

A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Multilayer pressure sensitive adhesive assembly

The present disclosure relates to a multilayer pressure sensitive adhesive assembly comprising at least a first pressure sensitive adhesive layer superimposed to a second polymer layer, wherein a curable liquid precursor of the first pressure sensitive adhesive polymer layer comprises a low Tg (meth)acrylate copolymer and a high Tg (meth)acrylate copolymer having a weight average molecular weight (Mw) of above 20,000 Daltons. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive assembly and uses thereof.

Block copolymer melt-processable compositions, methods of their preparation, and articles therefrom

Described are melt-processable block copolymers and compositions, embodiments of which may be useful in applications such as pressure sensitive adhesive (PSA) or heat-activatable adhesive, comprising polymeric end block and polymeric B block, wherein end block comprises copolymer and the B block comprises homopolymer or copolymer.

Pressure sensitive adhesive foams and articles therefrom

Block copolymer hot-melt processable adhesives, methods of their preparation, and articles therefrom

Curable composition, pressure-sensitive adhesive, method of making the same, and adhesive articles

A curable composition includes components: a) at least one ethylene-propylene-(nonconjugated diene) terpolymer; b) at least one ethylene-propylene copolymer; c) at least one bis(halomethyl)triazine crosslinker; and d) at least one tackifier. A weight ratio of component a) to component b) is in a range of from 15:85 to 85:15. A pressure-sensitive adhesive includes an at least partially crosslinked reaction product of the curable composition. Adhesive articles including the pressure-sensitive adhesive are disclosed.

Olefin block copolymer based pressure sensitive adhesives

Hot melt processable pressure sensitive adhesive comprising organophilic clay plate-like particles, a method of making, and articles made therefrom

The invention relates to a hot melt processable pressure sensitive adhesive comprising at least one elastomer, organophilic clay plate-like particles, and at least one non-volatile organophilic exfoliating agent. Also disclosed are articles prepared therefrom and methods pertaining thereto.

Inter-crosslinked polymeric microparticles

Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.

Tamper indicating article

Tamper indicating articles that include a surface-feature image-generating layer and an adhesive layer are described. The surface-feature image-generating layer generates a visible, surface-feature-generated image upon exposure to light. The intensity of the surface-feature-generated image is reduced when taped-over. Single-image and dual- image tamper indicating articles are also described, including buried dual-image and adjacent dual-image tamper indicating articles.

Parallel device and method for high-precision determination of sulfur solubility under multiple influencing factors

The invention discloses a parallel device and method for high-precision determination of sulfur solubility under multiple influencing factors, and the device comprises an elemental sulfur absorption system, an elemental sulfur saturation system and a sulfur content determination system. The elemental sulfur absorption system is used to remove the dissolved elemental sulfur in the sour gas. The elemental sulfur saturation system is arranged in parallel to saturate sour gases at different temperatures and pressures at the same time. The elemental sulfur absorption system and the elemental sulfur saturation system are arranged in parallel. The sulfur content determination system is used to determine the total sulfur content of the parallel elemental sulfur saturation system and the elemental sulfur content in the sour gas after absorbing the elemental sulfur under the same conditions.

Klebstoffzusammensetzungen mit hydrophilen und hydrophoben druckempfindlichen klebstoffen

Oberflächenenergiearmer klebstoff

Organophile, plättchenartige tonpartikel umfassendes, in der schmelze verarbeitbares haftklebemittel, verfahren zu dessen hersstellung und daraus hergestellte gegenstände

Verfahren zur verwendung von latenten, über- tackifizierten klebstoffen

Klebstoff zum binden an oberflachen mit niedriger oberflachenenergie

Nitrogen-containing five-membered heterocyclic derivatives as checkpoint kinase 1 inhibitor and uses thereof

The present disclosure relates generally to nitrogen-containing five-membered heterocyclic derivatives usefulness in treatment of conditions associated with Checkpoint kinase (CHK), particularly more specifically CHK-1 enzymes. Methods of use, compositions, and method of synthesis are also disclosed.

Verschlusssysteme mit selbsthaftenden klebstoffen sowie gegenstände

Vernetzte polymere mikropartikel

Druckempfindliche klebstoffe und sternblockpolymere und acrylpolymere enthaltende gegenstände

X-ray-based test device and method for plugging removal effect of sulfur dissolvent on sulfur deposition rock sample

An X-ray-based test device for a plugging removal effect of a sulfur dissolvent on a sulfur deposition rock sample includes a constant speed and pressure pump, a first intermediate container, a second intermediate container, a first pressure transmitter, a core holder, a second pressure transmitter, a first electric pump, a third intermediate container, a back-pressure valve, a gas flow meter, an H 2 S neutralization tank, a second electric pump, a back-pressure transmitter, a confining pressure transmitter, an X-ray generator, an X-ray detector and a thermotank. A sour gas sample is placed in the first intermediate container, and nitrogen is filled in the second intermediate container. The sulfur dissolvent is placed into the third intermediate container. A confining pressure inlet is formed in the core holder. The test device may be used for evaluating the plugging removal effect of the sulfur dissolvent injected into the sulfur deposition rock sample.

High-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test

A high-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test is provided by the present disclosure, the equipment comprises an injection system, a high-temperature and high-pressure visual kettle, a pressure supply system, a data acquisition and analysis system, a fluid recovery system, and an injection branch pipe; the injection system comprises an ISCo micro-injection pump, an intermediate container, a thermostatic heating oven and a pressure meter; the intermediate container is arranged in the thermostatic heating oven, the ISCo micro-injection pump is connected to the intermediate container; the data acquisition and analysis system comprises a microscope, a high-brightness light source and a computer; the pressure supply system comprises an annular pressure tracking pump, a back pressure pump, a back pressure valve and a pressure gauge; the fluid recovery system comprises a wide neck flask with rubber stopper, a balance, a flowmeter and an exhaust gas absorber tank.

Schmelzprozessierbare blockcopolymerzusammensetzung, verfahren zur herstellung und artikel daraus

Polyurethane laminating adhesive composition

There is provided an adhesive composition comprising at least 50 wt% of an aqueous dispersion of an amorphous polyurethane having a Tg below 25 °C; and a water dispersible cross-linker, where the adhesive composition has a peel retention of greater than or equal to 5% according to the Water/IPA Exposure Test.

Mehrarmiges Blockcopolymer und Haftkleber und mit einem mehrarmigen elastomeren Blockcopolymer hergestelltes Band

Double coated tape

Provided are double-coated tapes that include, in the following order: a first pressure-sensitive adhesive layer; a first plastic skin layer; an elastic base layer; a second plastic skin layer; and a second pressure-sensitive adhesive layer. The provided double-coated adhesive tapes can provide a combination of high bond strength, reworkability, and high impact and shock resistance, and can be easily converted using a die cutting process.

Inter-crosslinked polymeric microparticles

Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.

感圧接着剤およびテープ

(57)【要約】 【課題】 本発明は新規マルチ−アームブロックコポリ マーから造られる新規感圧接着剤および該接着剤から造 られる新規テープを提供する。 【解決手段】 次の（ａ）〜（ｄ）： （ａ）１００重量部の一般構造（Ａ′−Ｂ) m Ｙを有す るマルチ−アームエラストマーブロックコポリマー、前 記式中Ａ′およびＢはポリマーセグメントであり；Ｙは 多官能価カップリング剤の残基であり；ｍはアームの数 でありそして少なくとも３であり；Ａ′はモノアルケニ ルアレーンと共役ジエンのランダムコポリマーを含んで なり；ここにおいてＡ′のＴ g は１９℃未満であり；そ してＢは共役ジエンのホモポリマーまたは２個またはそ れ以上の共役ジエンのポリマーのいずれかを含んでな る； （ｂ）約２０〜約３００重量部の粘着性付与樹脂； （ｃ）０〜約５０重量部の架橋剤；および （ｄ）０〜約２００部の可塑剤 を含んでなる感圧接着剤。

Adhesivo y cinta adhesiva de contacto que emplean un copolimero de bloques elastomero de ramas multiples.

EN LA PRESENTE INVENCION SE PRESENTA UN NUEVO COPOLIMERO EN BLOQUES DE MULTIPLES BRAZOS, UN NUEVO ADHESIVO SENSIBLE A LA PRESION HECHO A PARTIR DE UN COPOLIMERO EN BLOQUES ELASTOMERICO DE MULTIPLES BRAZOS Y UNA NUEVA CINTA HECHA A PARTIR DE LOS MISMOS. EL ADHESIVO SENSIBLE A LA PRESION DE LA INVENCION COMPRENDE 100 PARTES EN PESO DE UN COPOLIMERO EN BLOQUES DE MULTIPLES BRAZOS QUE TIENE LA ESTRUCTURA (A - B) M Y, DE 20 APRO XIMADAMENTE A 300 PARTES EN PESO APROXIMADAMENTE DE UNA RESINA ADHESIVA, DE 0 A 50 PARTES EN PESO DE UN AGENTE DE ENTRECRUZAMIENTO, DE 0 A 200 PARTES EN PESO DE UN PLASTIFICANTE. A Y B SON SEGMENTOS POLIMERICOS; Y ES UN RESIDUO DE UN AGENTE DE ACOPLAMIENTO MULTIFUNCIONAL; Y M ES EL NUMERO DE BRAZOS, SIENDO M AL MENOS 3. A COMPRENDE UN COPOLIMERO ALEATORIO DE UN MONOALQUENILARENO Y UN DIENO CONJUGADO SIENDO LA TG DE A MENOR DE 19 (GRADOS) C Y B COMPRENDE BIEN UN HOMOPOLIMERO DE UN DIENO CONJUGADO O BIEN UN POLIMERO DE DOS O MAS DIENOS CONJUGADOS.

Tire

Double coated tape

Provided are double-coated tapes that include, in the following order: a first pressure-sensitive adhesive layer; a first plastic skin layer; an elastic base layer; a second plastic skin layer; and a second pressure-sensitive adhesive layer. The provided double-coated adhesive tapes can provide a combination of high bond strength, reworkability, and high impact and shock resistance, and can be easily converted using a die cutting process.

Combinatorial library comprising pouches as packages for library members

A combinatorial array comprises fluid-impervious, sealed or sealable, flexible, self-supported pouches, each pouch comprising therein one or more members of a library of materials. A method for producing the members of the library is also disclosed. The method can utilize an automated process for introducing components into the pouches. Analysis of products can be by destructive or non-destructive methods.

Polyurethane laminating adhesive composition

There is provided an adhesive composition comprising at least 50 wt % of an aqueous dispersion of an amorphous polyurethane having a Tg below 25° C.; and a water dispersible cross-linker, where the adhesive composition has a peel retention of greater than or equal to 5% according to the Water/IPA Exposure Test.

Low surface energy adhesive

Adhesives suitable for use with low surface energy materials are described. The adhesive contain an acrylic copolymer, a high glass transition temperature tackifier and a low glass transition temperature tackifier. The acrylic copolymer is the reaction product of a first alkyl(meth)acrylate having at least 5 carbon atoms in the alkyl group, a second alkyl(meth)acrylate having 1 to 4 carbon atoms in the alkyl group, and a vinyl carboxylic acid. Both tackifiers have a Tg greater than the Tg of the acrylic copolymer. The high glass transition temperature tackifier has a Tg of at least 20° C. and the low glass transition temperature tackifier has a Tg of less than 0° C.

Pressure-sensitive adhesives derived from 2-alkyl alkanols