Abstract: An insert for sealing and acoustic damping of a longitudinal cavity having an interior surface, comprising: a) one or more carrier plates made of a polymeric material (A) which does not deform when heated to a temperature not higher than 180° C. and which comprises a main polymer (A1) which gives mechanical strength to the carrier plate, and—at least one vibration-damping polymer (A2), and b) a thermally expandable material (B). The vibration-damping polymer (A2) is preferably selected from the group comprising: thermoplastic polyurethanes, styrene/butadiene block copolymers, hydrogenated styrene/butadiene block copolymers, styrene/isoprene block copolymers, hydrogenated styrene/isoprene block copolymers, styrene/isoprene/styrene tri-block copolymers, and hydrogenated styrene/isoprene/styrene tri-block copolymers.

Abstract: Method for encapsulating an electronic arrangement against permeates wherein a pressure-sensitive adhesive mass based on butylene block copolymers is applied to and around the areas of the electronic arrangement to be encapsulated.

Abstract: An object of the present invention is to provide a thermoplastic elastomer resin composition and a connector, which can be processed by mold forming and are excellent in the recycling property. The present invention provides a thermoplastic elastomer resin composition including 100 parts by weight of a base resin containing from 60 to 80 wt % of an acid-modified styrene-based elastomer and from 40 to 20 wt % of a modified polyphenylene ether, and from 0 to 20 parts by weight of a hydrogenated dicyclopentadiene; and a connector using the composition.

Abstract: Provided herein are graft copolymers of polyfarnesenes with condensation polymers; and methods of making and using the graft copolymers disclosed herein. The graft copolymers are obtained from the reaction of a polycondensation polymer with a modified polyfarnesene obtained from reaction of a polyfarnesene with a modifier in the presence of a grafting initiator. In certain embodiments, the condensation polymers include polyesters, polycarbonates, polyamides, polyethers, phenol-formaldehyde resins, urea-formaldehyde resins, melamine-formaldehyde resins and combinations thereof. In some embodiments, the polyfarnesenes include farnesene homopolymers derived from a farnesene, and farnesene interpolymers derived from a farnesene and at least a vinyl monomer. In certain embodiments, the farnesene is prepared from a sugar by using a microorganism.

Abstract: A pellicle which has a mask adhesive layer that can be plastic-deformed readily particularly at a temperature at which exposure to light is carried out, rarely provides a residue of an adhesive agent upon the removal of the mask adhesive layer from a mask and has good handling properties, and which can prevent the position gap of a pattern. The pellicle comprises a pellicle frame, a pellicle membrane and a mask adhesive layer containing a mask adhesive agent. The mask adhesive agent comprises 100 parts by mass of a thermoplastic elastomer (A) having a tan ? peak temperature of ?20 to 30 DEG C and 20 to 150 parts by mass of an adhesiveness-imparting resin (B).

Abstract: A film composition comprising one or more propylene-based polymers and one or more hydrocarbon resins, and methods for making the same are provided. The propylene-based polymer may have (i) 60 wt % or more units derived from propylene, (ii) isotactically arranged propylene derived sequences, and (iii) a heat of fusion less than 65 J/g. The hydrocarbon resin may have a glass transition temperature greater than 20° C.

Abstract: The present invention provides a thermoplastic elastomer composition obtained by dynamically crosslinking, under a melting condition, 100 parts by mass of a block copolymer (I), 1 to 1,000 parts by mass of a polar resin (II), 1 to 500 parts by mass of a modified polymer (III), and 0.01 to 50 parts by mass of a crosslinking agent (IV), wherein the block copolymer (I) comprises at least one polymer block (A) comprising as a main component an alkylene unit, and/or at least one copolymer block (B) comprising as main components an alkylene unit (b-1) and a vinyl aromatic monomer unit (b-2), and comprises at least one unsaturated block (C) comprising as a main component a conjugated diene monomer unit having 5 or more carbon atoms at an end.

Abstract: We disclose a monovinylarene-conjugated diene block copolymer containing a plurality of monovinylarene-conjugated diene mixed blocks, wherein each mixed block contains conjugated diene units and monovinylarene units in a weight ratio of about 0.05 to about 0.33. We also disclose a composition containing (a) from about 50 parts by weight to about 95 parts by weight of the monovinylarene-conjugated diene block copolymer and (b) from about 5 parts by weight to about 50 parts by weight of polystyrene; wherein the monovinylarene-conjugated diene block copolymer and the polystyrene total 100 parts by weight.

Abstract: A multilayer film for medical purposes is proposed, with one or two external layers, wherein the external layers contain: a first polyalphaolefin; a first thermoplastic elastomer with a melt viscosity of a melt flow index according to ISO 1133 of from 0.001 to 6 g/10 min at 230° C., 2.16 kg; and a second thermoplastic elastomer with a high melt viscosity not measurable according to ISO 1133 which is higher than the melt viscosity of the first thermoplastic elastomer.

Abstract: The present invention provides a thermoplastic elastomer composition comprising: 100 parts by weight of component (A), 10 to 100 parts by weight of component (B), 50 to 200 parts by weight of component (C), and 5 to 30 parts by weight of component (D). Component (A) is a propylene polymer having a melting point of 155° C. or more. Component (B) is a crystalline propylene-ethylene copolymer. Component (C) is an ethylene-?-olefin rubber having Mooney Viscosity of 30 to 100(ML1+4, 125° C.). Component (D) is a hydrogenated product of block copolymer comprising blocks of aromatic vinyl compound units and blocks of conjugated diene compound units.

Abstract: A composition comprising: (i) at least one low molecular weight polyolefin; (ii) at least one block copolymer obtainable by selectively hydrogenating a block copolymer having terminal polymeric blocks of a vinyl aromatic monomer and a mid-block prepared originally with an olefin and subsequently hydrogenated; (iii) at least one polypropylene; and (iv) at least one plastomer, wherein the plastomer is an ethylene based polymer having a density of 0.86 g/cc to about 0.910 g/cc or a propylene based polymer having a heat of fusion (Hf) of 70 J/g or less.

Abstract: A static resistant synthetic inter-connectable structural formulation which can support vehicles, heavy equipment, drilling rigs while providing static charge dissipation, resistance to corrosive materials consisting of polyethylene; polyethylene terephthalate, styrene-butadiene rubber; an antistatic material that partially protrudes through a formed outer surface of the formulation; and an ultraviolet stabilizer material.

Abstract: Process for the preparation of impact-strengthened cast PMMA sheets comprising the following stages: 1. a mixture comprising: at least one alkoxyamine Z(-T)n, in which Z denotes a polyvalent group and n an integer greater than 2, preferably of between 2 and 10, advantageously between 2 and 8, and the monomer(s) intended to form a central block B is heated to a temperature sufficient to activate the alkoxyamine and polymerize the monomer(s); 2. the central block B, optionally mixed with the unconsumed monomer(s) from stage 1, is reactivated in the presence of the monomer(s) intended to form the branches A; 3. MAM and optionally at least one comonomer M which can be copolymerized by the radical route with MMA and at least one radical initiator are added to the mixture obtained in stage 2; 4. the mixture from stage 3 is cast in a mould and then heated.

Abstract: The present invention relates to a low surface gloss styrene resin composition. The composition of the present invention is composed of (A) 80-99.9 weight % of the basic resin comprising rubber-modified styrene resin and (B) 0.1-20 weight % of syndiotactic polystyrene, the matting agent. The composition also includes (C) hydrogenated styrene block copolymer comprising styrene block and butadiene rubber block as a compatibilizer by 0.1-20 weight % for the total weight of the low surface gloss styrene resin composed of (A) the basic resin and (B) the matting agent and additionally includes (D) a plasticizer by 0.1-30 weight %. The composition of the present invention has excellent weatherability and impact-resistance in addition to the low surface gloss properties, so that it can be applied in various products, particularly exterior products for structures such as sidings and window frames, etc.

Abstract: The polymer composition comprises a polymer and a liquid compound having poor compatibility with the polymer. When the liquid compound is caused to be held in the polymer in a high concentration, a block copolymer having in the molecule a copolymerized polymer block unit having high compatibility with both of the matrix polymer and the liquid compound is incorporated and dispersed. As a result, the block copolymer serves like a surfactant to form an interface and the liquid compound is enclosed inside the interface to thereby form a liquid-in-solid polymer type emulsion.

Abstract: The present invention relates to an improved method for making sulfonated block copolymers and to methods for making membranes from such block copolymers. In particular, the present invention relates to an improved method for making sulfonated block copolymers having at least two polymer end blocks that are resistant to sulfonation and at least one polymer interior block that is susceptible to sulfonation where the sulfonation agent is C2 to C8 acyl sulfate. In the improved process the residual carboxylic acid formed from the C2 to C8 acyl sulfate is converted to C1 to C4 alkyl esters by contacting the residual carboxylic acid with at least a 0.9:1 molar ratio of a C1 to C4 alcohol to residual carboxylic acid, resulting in an improved sulfonated block copolymer solution. The present invention further relates to the use of such sulfonated block copolymer solutions to prepare various membranes and other articles.

Abstract: The present invention relates to an improved method for making sulfonated block copolymers and to methods for making membranes from such block copolymers. In particular, the present invention relates to an improved method for making sulfonated block copolymers having at least two polymer end blocks that are resistant to sulfonation and at least one polymer interior block that is susceptible to sulfonation where the sulfonation agent is C2 to C8 acyl sulfate. In the improved process the residual carboxylic acid formed from the C2 to C8 acyl sulfate is converted to C1 to C4 alkyl esters by contacting the residual carboxylic acid with at least a 0.9:1 molar ratio of a C1 to C4 alcohol to residual carboxylic acid, resulting in an improved sulfonated block copolymer solution. The present invention further relates to the use of such sulfonated block copolymer solutions to prepare various membranes and other articles.

Abstract: One aspect of the invention relates to a transparent rubber-modified styrenic resin composition. The resin composition comprises about 5 to about 30 parts by weight of a styrene-butadiene rubbery copolymer; and about 0 to about 15 parts by weight of a matrix resin comprising about 20 to about 40 parts by weight of styrenic monomer, about 30 to about 60 parts by weight of unsaturated carboxylic acid alkyl ester monomer and about 0 to about 15 parts by weight of vinyl cyanide monomer; wherein the difference between the refractive index of the rubbery copolymer and the matrix resin is about 0.005 or less and the transparent rubber-modified styrenic resin composition has a haze of about 5% or less as measured by a Nippon Denshoku Haze meter using a 3 mm thick test sample.

Abstract: A process for preparing a rubber comprising polymeric composition, and the resulting compositions, and certain isoprene comprising interpolymers.

Abstract: A process for manufacturing a polyolefin powder having a thermoplastic elastomer includes the steps of combining a polyolefin powder or a monomeric source therefor with a thermoplastic elastomer, the thermoplastic elastomer being in the form of a solution or dispersion in a solvent, wherein where a monomeric source of a polyolefin is used, contacting the source of a polyolefin with a polymerization catalyst under polymerization conditions to form a polyolefin, and removing the solvent to form a powder and wherein the polyolefin and the thermoplastic elastomer are not the same polymer. A particulate polyolefin composition which has a particle size distribution such that at least 80 vol. % of the particles has a diameter in the range of 1-3000 microns, and which includes a nascent polyolefin and 0.1-30 wt. % of a thermoplastic elastomer, calculated on the total of polyolefin and thermoplastic elastomer, is also described.

Abstract: A film composition comprising one or more propylene-based polymers and one or more hydrocarbon resins, and methods for making the same are provided. The propylene-based polymer may have (i) 60 wt % or more units derived from propylene, (ii) isotactically arranged propylene derived sequences, and (iii) a heat of fusion less than 65 J/g. The hydrocarbon resin may have a glass transition temperature greater than 20° C.

Abstract: The present invention provides a block copolymer composition and method of making the same having the structures (A2-B)n—X-(A1) or (A2-B2)n—X—(B1A1), where A1 and A2 are each a polymer block of a monoalkenyl arene and B, B1, and B2 are each a polymer block of one or more conjugated dienes or a hydrogenated diene polymer, n is an integer from 2 to 30 and X is the residue of a coupling agent.

Abstract: A disk-like nanoparticle includes a core layer that comprises a cross-linked multi-vinyl substituted aromatic hydrocarbon and a shell layer that comprises tri-block copolymer chains, each having a first, a second, and a third block. The first and third blocks of the tri-block copolymer chains comprise vinyl aromatic monomer units and are crosslinked with the core. The second block comprises conjugated diene monomer units and comprises a top and bottom axial surface of the disk-like nanoparticle. In the case of a nanoparticle having A-B-C tri-block copolymer chains, the third block comprises a top and bottom axial surface of the disk-like nanoparticle.

Abstract: A homogenous blend comprising from 10% to 90% by weight of a metallocene catalyzed polyethylene (mPE) and from 90% to 10% by weight of styrene-butadiene block copolymers comprising from 5% to 40% by weight of 1,3 butadiene monomer units and from 60% to 95% by weight of styrene monomer unites. The blend of the invention is used to make peelable films for food packaging applications.

Abstract: A lactam composition which comprises the following components: from 3 to 25% by weight of a random vinylaromatic-diene copolymer (A), where the random vinylaromatic-diene copolymer is composed of at least one block (S) which forms a hard phase and which is composed of vinylaromatic monomers, and of at least one random block (S/B) which forms a soft phase and which has vinylaromatic monomers and diene monomers, from 75 to 97% by weight of at least one lactam component (B), and also optionally reinforcing materials and/or additives has improved viscosity in the melt and can be used for producing polyamide moldings.

Abstract: A homogeneous blend comprising from 10% to 90% by weight of a metallocene catalyzed polyethylene (mPE) and from 90% to 10% by weight of styrene-butadiene block copolymers comprising from 5% to 40% by weight of 1,3 butadiene monomer units and from 60% to 95% by weight of styrene monomer units. The blend of the invention is used to make peelable films for food packaging applications.

Abstract: The present invention relates to tubular forming material made of a composition comprising block copolymers each made of a vinyl aromatic hydrocarbon and a conjugated diene, which has a uniaxial elongation viscosity at 88° C. at a strain rate of 0.5 sec?1 satisfying the following formula between 1.0 sec and 2.8 sec after initiation of elongation, 0.25<(LOG ?2.8?LOG ?1.0)/(2.8?1.0)<0.4 wherein ?1.0 and ?2.8 represent uniaxial elongation viscosities (Pa·sec) at elongation times of 1.0 sec and 2.8 sec, respectively, when measured by a Meissner model elongation viscometer. The composition contains three block copolymers at a specified blend ratio.

Abstract: An elastic film material that resists the propagation of a tear. The film material includes an SEEPS elastomeric block copolymer and has a time to break of at least 10 hours. The elastomeric block copolymer has a Tm of between about 10° C. and 20° C.

Abstract: The present invention relates generally to monovinylarene-conjugated diene block copolymers adapted for shrinkable film applications. In one embodiment, a block copolymer is provided wherein an oriented 2 mil film of the block copolymer oriented at 100° C. or less exhibits less than 10% shrinkage at 70° C., and at least 70% shrinkage at 100° C.

Abstract: Disclosed herein is a transparent thermoplastic resin comprising a rubber phase including an aromatic rubbery block copolymer resin, and a resin phase including a terpolymer comprising an aromatic vinyl compound, a vinyl cyanide compound and an unsaturated alkyl ester compound, wherein the rubber phase and the resin phase have a co-continuous phase structure.

Abstract: A partly cross-linked thermoplastic elastomer polyolefin composition intended to be converted by any plastics processing technique into a molded part, such as a cover for housing a vehicle's safety airbag, comprises an olefin polymer of polypropylene type, at least one copolymer of ethylene-alpha-olefin type, at least one cross-linking agent and a free radicals formation agent characterized in that a) the olefin polymer of polypropylene type is chosen from the group of polypropylene/ethylene or polypropylene/?-olefin copolymers and selected from those having an impact resistance of at least 40 kJ/m2 when measured using the notched Izod impact resistance test at 23° C. in accordance with ISO standard 180. b) at least one copolymer of the ethylene-?-olefin type is selected from the group formed by those having a density at least equal to 0.870 g/cm3 in accordance with ISO standard 1183. c) at least one thermoplastic elastomer is introduced into the composition.

Abstract: Provided is a fiber-reinforced composite. The composite has a propylene polymer including 90 wt % or more of propylene monomeric units based on the weight of the propylene polymer; a plurality of fibers of a solid, flexible material grafted to the propylene polymer; and an elastomer. The fibers are present in the composite at 10 wt % to 80 wt % based on the total weight of the composite. The propylene polymer is present in the composite at from 30 wt % to 95 wt % based on the total weight of the composite. The elastomer is present in the composite at from 5 wt % to 50 wt % based on the total weight of the composite. Greater than 50 wt % of the fibers are dispersed within the propylene polymer based on the total weight of the fibers in the composite. There is also provided a process for making a fiber-reinforced composite.

Abstract: Butadiene copolymers are brominated using certain quaternary ammonium tribromides as the brominating agent. The bromination process proceeds easily under mild conditions, and produces a brominated product that has excellent thermal stability.

Abstract: The invention includes a composition comprising from 40 to 98 weight percent of at least one GPPS, from 0 to 98 weight percent of at least one HIPS, from 0.5 to 10 weight percent at least one styrene block copolymer, from 0.5 to 10 weight percent of at least one polypropylene wherein the combination of GPPS, HIPS, polypropylene and styrene block copolymer make up at least about 90 percent of the composition as well as a film made of the composition, an envelope window patch comprising the film, an envelope comprising the window patch, and a process for making the film.

Abstract: An elastic member for an ink jet recording apparatus comprising a material containing 100 parts by weight of a block copolymer having a crystalline polyolefin block and an amorphous polyolefin block, 3 to 40 parts by weight of a polyolefin resin and 40 to 250 parts by weight of a softening agent.

Abstract: Methods are provided of making chemically crosslinked block copolymer gels and chemically crosslinked block copolymer gels. The methods include swelling an olefinic block copolymer having a functionalized soft block region and a functionalized hard block region, in a softener oil, and chemically crosslinking the olefinic block copolymer. Compositions are provided comprising a chemically crosslinked olefinic block copolymer having a functionalized hard block region and a functionalized soft block region and a softener oil.

Abstract: A composition of matter that may be used to make transparent, substantially gel-free polymeric films includes at least a styrenic block copolymer and a thermoplastic resin other than the styrenic block copolymer. The styrenic block copolymer (e.g. S-I-B-S) has four distinct and sequential blocks: a first styrenic block (S), a first diene block (e.g. isoprene or I), a second diene block that differs from the first diene block (e.g. butadiene or B) and a second styrenic block (S). The styrenic block copolymer desirably lacks any random diene block (e.g. a random isoprene/butadiene block). The styrenic block copolymer also desirably lacks any significant percentage of a triblock copolymer (S-I-B). The composition of matter may also include an extender material such as white mineral oil. The compositions may be used to make mono-layer or multi-layer cast or blown films.

Abstract: A block copolymer comprised of a polymer block or blocks (A) comprising conjugated diene monomer units and a polymer block or blocks (B) comprising conjugated diene monomer units and aromatic vinyl monomer units, wherein (1) the polymer block or blocks (A) have a glass transition temperature in the range of ?88 to ?45° C., (2) the polymer block or blocks (B) have a glass transition temperature in the range of 30 to 90° C., (3) the content of aromatic vinyl monomer units in the block copolymer is in the range of 30 to 52% by weight based on the total weight of the block copolymer, (4) the block copolymer has an aromatic vinyl block ratio of smaller than 69% by weight based on the total weight of the block copolymer, and (5) the viscosity of a 5% by weight solution of the block copolymer in styrene is at least 5 mPa·s but smaller than 30 mPa·s. This block copolymer is used as a modifier for resin.

Abstract: A thermofusible composition comprising from about 40 to about 70 weight percent of a selectively hydrogenated styrenic block copolymer (HSBC), and from about 1 to about 30 weight percent of a butylene homopolymer, a butylenes copolymer, or a combination thereof, wherein the HSBC is: (i) prior to hydrogenation each A block is a mono alkenyl arene polymer block and each B block is a controlled distribution copolymer block of at least one conjugated diene and at least one mono alkenyl arene; (ii) the weight percent of mono alkenyl arene in each B block is from about 10 to about 40 weight percent; (iii) each B block has a styrene blockiness index of less than 10 percent; and (iv) the weight percent of vinyl in each B block is at least about 40 weight percent.

Abstract: A flexible tubing material includes a mixture of a polyolefin and a styrenic based block copolymer, wherein the styrenic based block copolymer has an A-B-A block configuration and a molecular weight of at least about 350 kg/mol.

Abstract: A profile extruded article includes a composition that is formed by melt-kneading particular amounts of a poly(arylene ether), a polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer, a homopolystyrene, and a polysalicylate. The article is particularly useful in the fabrication of solar collectors for low cost solar energy systems.

Abstract: The invention provides a thermoplastic elastomer composition that has an excellent balance between flexibility and heat resistance (creep resistance), shows little tackiness (stickiness) and is not deteriorated in design properties even when exposed to a high temperature. A thermoplastic elastomer composition (X) includes a propylene copolymer (A) satisfying all the requirements (A1) to (A3) described below, a crystalline polyolefin polymer (B) which is optional, and a styrene block copolymer (C). (A1) The Shore A hardness is in the range of 50 to 90. (A2) The copolymer gives a melting peak Tm in the range of 30 to 95° C., and the endothermic enthalpy ?H corresponding to the melting peak is in the range of 1.0 to 20 J/g. (A3) The molecular weight distribution Mw/Mn is in the range of 1.2 to 3.0.

Abstract: Curable elastomer compositions and cured and/or curable articles made therefrom, the curable elastomer composition comprising an essentially unsaturated rubber elastomer, between 0.5 and 25 phr of a metal salt of a carboxylic acid, an effective amount of a peroxide curing agent for curing the elastomer composition and between 0.1 and 10. phr of a hysteresis-decreasing multifunctional curing coagent that decreases the hysteresis of the cured elastomer composition, wherein the hysteresis is measured using a rotorless shear rheometer as a loss tangent at 150° C., 41.85% strain and 10 Hz. The hysteresis of such a cured composition may decrease by at least 15% or alternatively, by at least 25%. The elastomer is useful in tires including, for example, the sidewall supports, the carcass reinforcement and the tread.

Abstract: Polymeric compositions and methods of making and using such compositions are provided. The compositions incorporate at least one component that is a polymer including propylene-derived units and at least one component that is a styrenic block copolymer. The polymeric compositions are found to have desirable elastomeric properties while at the same time exhibiting beneficial processability characteristics. The unique combination of processability and performance attributes result in the polymeric compositions useful in a variety of applications such as films, fibers, woven and non-woven fabrics, sheets, molded objects, extruded forms, thermoformed objects, and all products made from such application materials.

Abstract: A method for producing an elastomeric sealing article including preparing a thermoplastic elastomeric resin composition having (a) 100 parts by weight of a hydrogenated block copolymer including at least two polymeric blocks (A) of styrene, and at least one polymeric block (B) of isoprene; (b) 70 to 130 parts by weight of an ethylene-octene copolymer including ethylene in an amount of more than 50% by weight; and (c) 30 to 60 parts by weight of polypropylene. The thermoplastic elastomeric resin composition does not contain a non-aromatic softening agent, and none of components (a), (b), and (c) is cross-linked. The method also includes molding the thermoplastic elastomeric resin composition into an elastomeric sealing article.

Abstract: The present invention relates to (meth)acrylic adhesives with high impact resistance and no or low odor. The compositions comprise at least a (meth)acrylic ester E which may be obtained by esterification of an alcohol ALC and methacrylic or acrylic acid, said alcohol ALC contains at least 5 carbon atoms; and at least a rubber block co-polymer RS being solid at room temperature and which is a co-polymer of styrene and butadiene and/or isoprene and/or ethylene propylene diene monomer; and at least a polymer PL having pending (meth)acrylic groups and is a butadiene/acrylonitrile co-polymer with terminal (meth)acrylic groups or a polyurethane (meth)acrylate or an ester obtainable by esterification of an alcohol ALC-II and methacrylic or acrylic acid and which has a molecular weight between 200 and 9000 g/mol. Such combinations E-RS-PL have lower viscosity than PL and a combination E-RS.

Abstract: A process for forming a nanoparticle composition is provided. The process includes polymerizing conjugated diene monomer in a hydrocarbon solvent to form a first reaction mixture, and charging excess alkenylbenzense monomer and anionic catalyst to form mono-block and diblock polymers. Micelles of said mono-block and diblock polymers are formed, and at least one crosslinking agent is added to cross-link the micelles and form nanoparticles. The nanoparticles preferably have a poly(alkenylbenzene) core and an outer layer including monomer units selected from the group consisting of conjugated dienes, alkenylbenzenes, alkylenes, and mixtures thereof, and a size distribution of between about 1 and 1000 nm.

Abstract: An adhesive composition is provided for adhering together roofing materials such as EPDM rubber and thermoplastic polyolefin (TPO). The adhesive composition includes a rubbery polymer comprising a blend of a thermoplastic block copolymer selected from the group consisting styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene-propylene, ethylene-propylene, and combinations thereof, and a paraffinic hydrocarbon polymer. Roofing articles incorporating the adhesive composition are also provided. The composition is a pressure sensitive adhesive that allows roofing articles to be applied in a peel and stick manner.

Abstract: The present invention relates to monovinylarene-conjugated diene copolymer compositions adapted for blendability with acrylate polymers. In some embodiments, such compositions are provided that are particularly resistant to blocking when stored in pellet form.

Abstract: Styrenic block copolymers are blended with propylene copolymers to provide polymeric compositions with an improved balance between processability and elasticity. The compositions have improved processability by facilitating the ease with which a rubbery material, usually difficult to melt process, can be processed at high line speeds, which in turn improves the formation of the composition into films or other articles, assisted by a desired level of melt elasticity, i.e., a high elastic extension and recovery.