Abstract: To provide a block copolymer composition having a good balance in transparency and impact resistance, and particularly having an excellent impact resistance, by making a molded product of injection molding under high sear condition in such a manner as to hardly generate anisotropy. A block copolymer composed of a hard segment block comprising a block made mainly of a vinyl aromatic hydrocarbon and a soft segment block comprising a block made mainly of a conjugated diene, characterized by having a remarkably improved impact resistance without degrading transparency in respect of not only an extrusion-molded product and a blow-molded product but also an injection-molded product, by blending two kinds of block copolymers having a hard segment block of a specific structure.

Abstract: A HMPSA is provided that preferably includes at least a) from 30 to 50% of a mixture of triblock and diblock styrenic copolymers having an overall styrene content comprised between 14 and 40%, b) from 40 to 55% of a tackifying resin with a softening temperature comprised between 70 and 150° C. obtainable by hydrogenating, polymerizing or copolymerizing mixtures of aliphatic unsaturated hydrocarbons having about 5, 9 or 10 carbon atoms; c) from 4 to 20% of a hydrocarbon oil with an aromatic content less than 15%; d) from 1 to 6% of a filler selected among calcium carbonate or a low molecular weight homopolymer or copolymer of polyethylene. A laminated system is also provided that includes at least an adhesive layer utilizing the HMPSA and paper facestock. Also included are PSA labels obtainable from the laminated system with a reduced tendency to discolor after storage.

Abstract: A process for the production of a pressure-sensitive adhesive composition is provided comprising (1) forming an elastomer composition by mixing in the form of a solution, 33.5 to 95% by weight of an aromatic vinyl-isoprene block copolymer (a) having two or more poly(aromatic vinyl) blocks, 0 to 47.5% by weight of an aromatic vinyl-isoprene diblock copolymer (b), and 5 to 33% by weight of isoprene homopolymer (c) having a weight average molecular weight of 20,000 to 100,000, wherein the elastomer composition has a content of aromatic vinyl monomer unit of 14 to 50% by weight, (2) separating the elastomer composition from the solvent, (3) drying the elastomer composition, and (4) blending a petroleum resin with the elastomer composition made by steps (1)-(3), wherein the amount of the petroleum resin is 10 to 500 parts by weight based on 100 parts by weight of the elastomer composition.

Abstract: Process for preparation of impact-resistant polystyrene from diene monomers and from styrene monomers via anionic polymerization, where 1) in a stage 1) a rubber solution is prepared from the diene monomers, or from the diene monomers and from the styrene monomers, using an alkali metal organyl compound as initiator and with concomitant use of a solvent, and then 2) in a stage 2), styrene monomer is added to the rubber solution, and the resultant mixture is polymerized anionically to give the impact-resistant polystyrene, ?and where, after stage 1) and prior to stage 2), an organylaluminum compound and an alkali metal hydride are added to the rubber solution.

Abstract: A solvent for polystyrene resin treatment is used for reducing the volume of a polystyrene resin by contacting it with the solvent; and a method of treating polystyrene resins. The solvent is characterized by comprising 20 to 70 wt. % of diethylene glycol dimethyl ether and 30 to 80 wt. % of C9-13 aliphatic hydrocarbon. The method employs the solvent.

Abstract: An aqueous composition contains an olefinic polymer having an olefin portion that is substantially saturated and anionic functionality imparting water dispersibility. The olefinic polymer can be prepared by reacting a saturated or substantially saturated olefin polymer with a reactant that provides the water-dispersing functionality. The composition can be an adhesion promoter that provides excellent adhesion of subsequent coating layers to olefinic substrates like TPO or an additive in a different coating composition, which may be a curable coating composition, especially a primer composition, to provide excellent adhesion to olefinic substrates like TPO.

Abstract: A hot melt pressure sensitive adhesive composition includes ABA block copolymer(s), a midblock resin, a plasticizer, and optionally, an endblock resin. The A block is derived from styrene and B block is derived from butadiene or its hydrogenated version. The block copolymer(s) has an average styrene content of from about 15% to about 35%, an average diblock content of no less than about 20%, and an average solution viscosity of less than about 1,000 cps.

Abstract: A heat-sealing film having a haze of not more than 30% and having a sealant layer made of a resin composition which comprises from 50 to 100 wt % of the total of the following components (a) to (c): (a) from 5 to 50 wt % of a block copolymer of from 50 to 95 wt % of a styrene-type hydrocarbon and from 5 to 50 wt % of a conjugated diene-type hydrocarbon, (b) from 5 to 50 wt % of an ethylene/?-olefin random copolymer, and (c) from 5 to 70 wt % of a block copolymer of from 10 to 50 wt % of a styrene-type hydrocarbon and from 50 to 90 wt % of a conjugated diene-type hydrocarbon, and (d) from 0 to 50 wt % of an impact-resistant polystyrene.

Abstract: The present invention relates to a block polymeric material. Typically the block polymer comprises units capable of having an average cationic charge density of about 15 or less, preferably 5 or less, more preferably from about 0.05 to about 5, even more preferably from about 0.05 to about 2.77, even more preferably from about 0.1 to about 2.75, most preferably from about 0.75 to about 2.25 units per 100 daltons molecular weight at a pH of from about 4 to about 12. The polymeric material is a suds enhancer and a suds volume extender for personal care products such as soaps and shampoos. The compositions have increased effectiveness for preventing re-deposition of grease during hand and body washing. The polymers are also effective as a soil release agent in fabric cleaning compositions.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: Disclosed is a styrene copolymer composition having: (I) a styrene/n-butyl acrylate copolymer having styrene monomer units and n-butyl acrylate monomer units in a ratio from 80/20 to 89/11, and (II) a block copolymer having a block configuration having (A) at least two polymer blocks each having mainly vinyl aromatic hydrocarbon monomer units and (B) at least one vinyl aromatic hydrocarbon/conjugated diene copolymer block, wherein the block copolymer (II) has vinyl aromatic hydrocarbon monomer units and conjugated diene monomer units in a ratio from 65/35 to 90/10 or from 75/25 to 85/15, and wherein the polymer blocks (A) in the block copolymer (II) have a maximum weight polymer block and a minimum weight polymer block, the weight ratio of the maximum weight polymer block to the minimum weight polymer block being in the range from 1.2 to 4.5 or from 1.0 to less than 1.2.

Abstract: Hot-melt adhesive compositions used in non-woven assemblies, comprising: (a) 100 parts by weight of a block copolymer of the formula S-(I/B)-S, wherein S represents a predominantly poly(styrene) block and (I/B) represents a polymer block obtained by at random copolymerization of a mixture of predominantly isoprene and butadiene in a weight ratio in the range of from 70:30 to 30:70, wherein the total block copolymer has a melt flow index measured at 200° C./5 kg in the range of from 0.1 to 12 g/10 min. and has a poly(styrene) content of from 28 to 50 wt % and a coupling efficiency of from 50 to 100%, (b) from 250 to 300 parts by weight of a tackifying resin, (c) from 50 to 150 parts by weight of a plasticizer, and (d) from 0 to 3 parts by weight of auxiliaries, such as stabilizers and/or antioxidants, and disposable articles, comprising at least a non-woven element and assembled by the use of said hot-melt adhesive compositions.

Abstract: The present invention relates to pressure sensitive adhesive compositions prepared from novel anionic block copolymers of aromatic vinyl compounds and conjugated dienes. The block copolymers are a mixture of a high molecular weight linear and/or radial block copolymer component (SBC1 and/or SBC2), and a diblock copolymer component (D1). The block copolymer may be combined with other block copolymers, tackifying resins, oils and other components to form the adhesives of the present invention. The pressure sensitive adhesives of the present invention maintain their performance at elevated temperatures and fail cohesively making them particularly useful for die-cuttable label applications. The pressure sensitive adhesives compositions may also comprise ester plasticizers typically used for PVC and thus make adhesives particularly suitable for PVC film labels and decals.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: There are provided a polypropylene resin composition comprising: (i) 10 to 99% by weight of a specific propylene copolymer (X), (ii) 0 to 60% by weight of a specific copolymer (Y), and (iii) at least one member selected from the group consisting of 1 to 30% by weight of a specific propylene polymer (W) and 0.1 to 3 parts by weight of a nucleating agent (N); and a film comprising said polypropylene resin composition, or a laminated film having a layer comprising said polypropylene resin composition.

Abstract: A composition to be used for the manufacture of fibers, filaments, melt blown or spun bond non-wovens or cast or blown films, comprising at least 50 wt % of a styrenic block copolymer; a polyolefin in an amount of from 10 to 30 wt %; a resin which is compatible with the poly(styrene) blocks in the styrenic block copolymer in an amount of at least 5 wt %, and a resin which is compatible with the hydrogenated polybutadiene blocks in the styrenic block copolymer an amount of at least 3 wt %, wherein all weight percentages are relative to the weight of the complete composition; styrenic block copolymers to be used therein; and fibers, melt blown or spun bond non-wovens or cast or blown films prepared from it.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono vinyl aromatics and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: A second-order modified block copolymer which can be obtained by reacting a first-order modified block copolymer with a second-order modifier, wherein the first-order modified block copolymer comprises a base block copolymer and a functional group-containing first-order modifier group bonded to the base block copolymer, wherein the base block copolymer comprises at least one polymer block comprised mainly of vinyl aromatic hydrocarbon monomer units and at least one polymer block comprised mainly of conjugated diene monomer units, and wherein the second-order modifier has a specific functional group which is reactive to the functional group of the first-order modifier group of the first-order modified block copolymer. A second-order modified block copolymer-containing polymer composition comprising the second-order modified block copolymer as well as a thermoplastic resin and/or a rubbery polymer.

Abstract: An elastomer composition is prepared that contains a rubber component (A) containing at least one of diene rubber and EPDM rubber; a mixture composition (B) containing hydrogenated styrene thermoplastic elastomer and olefin resin; and a styrene thermoplastic elastomer (C) having double bonds partly left, wherein the styrene thermoplastic elastomer (C) is blended at a ratio of not less than 2 parts by weight and not more than 100 parts by weight with respect to 200 parts by weight of the mixture composition (B), and the rubber component (A) is dispersed by dynamic crosslinking in the mixture composition (B) having the styrene thermoplastic elastomer (C) dispersed therein. A rubber roller is formed by using the elastomer composition. The elastomer composition is excellent in wear resistance, and the rubber roller made of the elastomer composition is excellent in wear resistance at the time of idling rotation.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: A novel solvent-free, hot melt adhesive composition suitable for bonding a polar leather layer to a non-polar substrate is claimed. The composition comprises a block copolymer having at least one mono alkenyl arene polymer block and at least one controlled distribution copolymer block of at least one conjugated diene and at least one mono alkenyl arene, a hydrogenated tackifying resin, a resin compatible with the mono alkenyl arene blocks, optionally a functionalized poly(alkylene) resin, and stabilizers and/or auxiliaries. A process for bonding a polar leather layer to a non-polar substrate by application of the novel solvent-free, hot melt adhesive composition is also provided.

Abstract: SEEPS gel and gel foam molded shape articles for use in medical and sport health care, such use include therapeutic hand exercising grips, dental floss, crutch cushions, cervical pillows, bed wedge pillows, leg rest, cushions, mattress, bed pads, elbow padding, dermal pads, wheelchair cushions, helmet liner, cold and hot packs, exercise weight belts, traction pads and belts, cushions for splints, slings, and braces, cushions for the hand, wrist, finger, fore, knee, leg, clavicle, shoulder, foot, ankle, back, rib, soles for orthopedic shoes, and the like.

Abstract: A method of producing a synthetic polymer blend comprising steps of (i) blending a styrene-butadiene-styrene thermoplastic elastomer (SBS) with a compatibilizer selected from the group consisting of polybutadiene grafted polystyrene resin (HIPS), styrene-hydrogenated-butadiene-styrene (SEBS) and poly-dimethyl-phenylene-oxide (PPO), and dispersing particles of said SBS to a mean particle size of substantially 3 microns or less in diameter, to form an intermediary ingredient, wherein weight ? ? of ? ? the ? ? SBS weight ? ? of ? ? the ? ? compatibilizer is substantially 1 4 to 4; and (ii) blending the intermediary ingredient in the step b) with further ingredient(s) including at least general purpose polystyrene (GPPS), and further dispersing the SBS particles, to form the synthetic polymer blend, wherein weight ? ? of ? ? the ? ? intermediary ? ? ingredient weight ? ? of ? ? the ? ? GPPS is substantially 1 19 ? ? to ? ? 5 6

Abstract: A rubber composition comprising as a rubber component a specified styrene-butadiene copolymer (A) and a styrene-isoprene copolymer of a specified hydrogenation ratio (B) wherein a bound styrene content of the copolymer (B) is larger by a given value than a bound styrene content of the copolymer (A) is good in the wear resistance and fracture property and further excellent in the wet-skid resistance and dry gripping property.

Abstract: It is to provide a block copolymer and its copolymer composition which provides a heat shrinkable (multilayer) film with less spontaneous shrinkage while maintaining favorable low temperature shrinkability, and a heat shrinkable (multilayer) film containing the block copolymer. By using a block copolymer comprising a vinyl aromatic hydrocarbon and a conjugated diene characterized in that the relation of the loss tangent value obtained by dynamic viscoelasticity measurement with the temperature satisfies specific conditions, or a composition containing the copolymer composition as an essential component, a heat shrinkable (multilayer) film with less spontaneous shrinkability and less odor while maintaining favorable low temperature shrinkability can be obtained.

Abstract: The invention provides a molding formed of a thermoplastic elastomer composition which molding exhibits suppressed compression set and satisfactory tensile strength while exhibiting low hardness. The molding is formed of a thermoplastic elastomer resin composition comprising; an aromatic vinyl-isoprene block copolymer (a) including two or more poly(aromatic vinyl) blocks each having a weight-average molecular weight of 14,000 to 100,000, in an amount of 55 to 95 wt %; an aromatic vinyl-isoprene diblock copolymer (b) in an amount of 0 to 40 wt %; and polyisoprene (c) having a weight-average molecular weight of 5,000 to 300,000, in an amount of 5 to 33 wt %; wherein the composition has an aromatic vinyl monomer unit content of 14 to 30 wt % based on the total amount of the components (a), (b), and (c). The molding can be widely employed in a variety of uses where the characteristics of the product are advantageous; such as roller members (e.g.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: A process for production of a thermoplastic elastomer composition by melt-kneading a mixture in one step to thereby conduct dynamic crosslinking, wherein the mixture comprises a hydrogenated block copolymer (a1) which is prepared by hydrogenating a block copolymer comprising a vinyl aromatic polymer block (A1) and a conjugated diene polymer block (B1) and has number-average molecular weight of 200000 or above and, if necessary, a non-hydrogenated block copolymer (a2) comprising a vinyl aromatic polymer block (A2) and a conjugated diene polymer block (B2), and contains a non-aromatic rubber softening agent (b), a peroxide-crosslinkable olefin resin (c) having a density of 0.94 g/cm3 or above, a peroxide-decomposable olefin resin (d), an organic peroxide (e), and a crosslinking aid (f), the amount of (b) being 50 to 250 parts by mass per 100 parts by mass of the sum of (a1) +(a2), the amount of (c) being 2.5 to 50 parts by mass per 100 parts by mass of (a); and the amount of (d) being 0.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: The present invention relates to gels prepared from novel anionic block copolymers of mono alkenyl arenas and conjugated dienes, and to blends of such block copolymers with such polymers. The block copolymers are selectively hydrogenated and have A polymer blocks and B polymer blocks wherein A represents a polymer block of a mono alkenyl arene and B represents a polymer block of a conjugated diene. The block copolymer may be combined with tackifying resins, oils and other components to form the gel of the present invention.

Abstract: Graft copolymers providing soil release benefits in laundry detergent compositions contain backbone units derived from an ethylenically unsaturated monomer, hydrophilic uncharged side chains, and cationically chargeable or charged side chains containing a tertiary or quaternary nitrogen atom. Preferred copolymers have a methacrylate backbone with polyethylene oxide and 2-dimethylaminoethyl methacrylate (DMAEMA) side chains. The graft copolymers may be prepared by radical polymerisation.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: According to the present invention, it is provided a thermoplastic polymer composition comprising an alkyl ester of (meth)acrylic acid copolymer and a block copolymer prepared by extending, with a specific polyurethane component, the polymer chain of a block copolymer, which may be hydrogenated, having a polymer block of an aromatic vinyl compound and a polymer block of a conjugated diene. The thermoplastic polymer composition of the present invention has excellent properties such as non-tackiness, melt-moldability and melt-adhesiveness to other resins upon the lamination therewith. Also, the thermoplastic polymer composition of the present invention has melt characteristics suitable for the production of a foam. Therefore, the thermoplastic polymer composition of the present invention can be applied favorably for the production of various molded articles including a foam.

Abstract: A block copolymer comprising two or more blocks and having fluorescence in the solid state, wherein blocks thereof may be the same or different, and in each of the blocks, one or more kinds of repeating units are bonded through conjugated bonds, and bonding between the blocks is made by junction unit having conjugated bond, and the polystyrene reduced number average molecular weight of at least one block is 1×103 to 1×108.

Abstract: A stretch matenal consists essentially of a thermoplastic polymer matstial that meets the following couditions: (i) the thermoplastic polymer material contains: (a) 100 parts by weight of a hydrogenated block copolymer having a number average molecular weight of 50,000 to 140,000 and comprising am least two polymer blocks (A) composed mainly of a vinyl aromatic compound and at least one hydrogenated polymer block (B) composed mainly of a conjugated diene compound; (b) 0 to 120 parts by weight of a non-aromatic rubber softening agent; (c) 0 to 80 parts by weight of polyethylene that has an MFR of 15 g/10 min or above when measured at 190° C. wider a load of 2.16 kg; and (d) 0 to 40 parts by weight of polystyrene that has an MFR of 5 g/10 min or above when measured at 200° C. under a load of 5.00 kg.

Abstract: A process for increasing the stress-cracking resistance of polystyrene molding compositions, stress-cracking-resistant, glossy polystyrene molding compositions, composite layered sheets or composite layered films with an outer layer of this type, and also processes for producing moldings for refrigeration equipment.

Abstract: Provided are a block copolymer including a polymer block containing acrylonitrile or methacrylonitrile as a principal constituent, which is excellent in heat resistance, weatherability, oil resistance, flame retardancy, and low-temperature resistance and which can be economically produced; and a thermoplastic resin composition and an elastomer composition each containing the block copolymer. The block copolymer is produced by reversible addition-fragmentation chain transfer polymerization in the presence of a thiocarbonylthio group-containing compound.

Abstract: In a golf ball comprising a core and a cover of one or more layers, at least one layer of the cover is formed primarily of a mixture comprising (A) an ionomer resin, (B) a thermoplastic elastomer and (C) a thermoplastic block copolymer terminated with a functional group capable of reacting with the ionomer resin, in such a proportion as to provide a A/(B+C) weight ratio between 50/50 and 98/2 and a B/C weight ratio between 9/1 and 1/1. The golf ball has improved rebound, a soft feel upon impact, good durability and good moldability.

Abstract: An electrical insulating material for use in electrical insulators, for example, for insulated electric wires such as internal wiring of electronic equipment, automobiles or the like, electrical insulating covers produced from the electrical insulating material and a method of electrical insulation using the material are provided. More particularly, it relates to an electrical insulating material which is excellent in mechanical properties and durability, an electrical insulating cover produced from the material and a method of electrical insulation using the material.

Abstract: The present invention provides a block copolymer comprising at least one segment having an acid group and at least one segment substantially free from an acid group, wherein the segment having an acid group comprises a repeating unit which is a substituted repeating unit represented in the formula (1) with an acid group, —(Ar1—X1—Ar2—X2)—, ??(1) and in the formula(1), X1 and X2 being each independently —O— or —S—, Ar1 and Ar2 being each independently an aromatic group selected from the groups represented by the following formulae (2) to (4)

Abstract: The present invention is directed to pressure-sensitive adhesive compositions and pressure-sensitive adhesive constructions fabricated using the pressure-sensitive adhesive compositions. The pressure-sensitive adhesive compositions comprise about 10 to about 40% of a styrene-isoprene block copolymer, about 5 to about 30% of a styrene-butadiene block copolymer, about 30 to about 65% of an aromatically modified tackifying resin, about 8 to about 30% of a plasticizing oil and optionally about 0.2 to about 2% of an antioxidant, wherein the percentages are based on the total weight of the composition.

Abstract: The present invention is a novel block copolymer containing a controlled distribution copolymer block of a conjugated diene and a mono alkenyl arene, where the controlled distribution copolymer block has terminal regions that are rich in conjugated diene units and a center region that is rich in mono alkenyl arene units. Also disclosed is a method for manufacture of the block copolymer.

Abstract: Adherent gels and adherent gel composites which can be made by applying a tear resistant adherent gel of SEEPS onto one or more selected substrates of foam, plastic, fabric, metal, concrete, wood, wire screen, refractory material, glass, synthetic resin, synthetic fibers, and the like. Such adherent gels and gel composites are useful for protecting articles, the body and skin.

Abstract: The present invention relates to mixtures comprising linear block copolymers made from vinylaromatic monomers and from dienes of the structure (I) S1-B1-S2 and (II) S3-B2-S4, where S1 is a block made from vinylaromatic monomers with number-average molar mass Mn in the range from 40,000 to 100,000 g/mol, each of S2, S3 and S4 is a block made from vinylaromatic monomers with number-average molar mass Mn in the range from 5,000 to 20,000 g/mol, each of B1 and B2 is a block made from dienes or a copolymer block made from dienes and from vinylaromatic monomers with numberaverage molar mass Mn in the range from 15,000 to 40,000 g/mol, and the ratio of the block copolymers (I)/(II) is in the range from 0.6 to 2.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono vinyl aromatics and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: The present invention provides a vinyl chloride polymer composition which comprises (i) a vinyl chloride polymer (a) and (ii) a block copolymer (b) having a polymer block (I) comprising of a block copolymer, which may be hydrogenated, of an aromatic vinyl compound polymer block and a conjugated diene polymer block, and a polymer block (II) of a polyurethane, in a specific weight ratio. The vinyl chloride polymer composition of the present invention has non-tackiness, excellent handling properties, favorable flexibility and mechanical properties, and favorable melt-adhesiveness to other materials, and shows no migration of the component serving as a plasticizer. The vinyl chloride polymer composition of the present invention can be applied for various uses such as a production of various molded articles and a production of a laminated structure with other materials.

Abstract: The present invention relates to a free flowing powder composition with a particle size at most 800 ?m comprising: (a) 100 parts by weight of one or more styrenic block copolymers, at least one of which being a block copolymer (a1) comprising at least one block S having a glass transition temperature Tg above 25° C., which contains polymerized units of a vinylaromatic monomer and at least one elastomeric block B/S having a Tg below 25° C.

Abstract: Provided are an aromatic vinyl polymer resin composition capable of being molded into resin foam sheets having good surface smoothness and glossiness well balanced with the mechanical strength thereof even when the expansion ratio in molding is increased, and resin foam sheets and containers of the composition. The resin composition comprises (A) from 80 to 98% by mass of an aromatic vinyl polymer resin having a weight-average molecular weight measured through GPC of from 200,000 to 400,000, a ratio of weight-average molecular weight to number-average molecular weight ranging from 2.2 to 3.6, a number of branches of from 0.1 to 1.0 in one molecule having an absolute molecular weight of 1,190,000 measured through GPC-MALLS, and a melt flow rate of from 1.5 to 3.5 g/10 min, and (B) from 2 to 20% by mass of a styrene-diene block copolymer or its hydrogenate. This is molded into a resin foam sheet through extrusion foaming, and the sheet is thermoformed into containers.

Abstract: A poly(arylene ether)-polyolefin composition is prepared by melt-blending a poly(arylene ether) and a compatibilizer to form a first blend, and melt-blending the first blend and a polyolefin to form a second blend. The composition lacks an unhydrogenated block copolymer, a poly(alkenyl aromatic) resin, or both. Multiple mixing elements, low throughput, and high extruder rotations per minute may be used to achieve high energy mixing of the first and second blends. Compositions prepared by the method exhibit an improved balance of impact strength, stiffness, and heat resistance, as well as reduced variability of physical properties.