Abstract: A polypropylene resin composition for use in automotive inner and outer trims, comprising 50 to 85% by weight of a crystalline polypropylene (A) having an MFR (230° C.) of 7 to 70 g/10 min, 2 to 16% by weight of a hydrogenated block copolymer (B) obtained by hydrogenating at a hydrogenation ratio of at least 90% an aromatic vinyl/conjugated diene block copolymer which contains an aromatic vinyl block polymer unit in an amount of 22% by weight or less and has an MFR (230° C.) of at least 5 g/10 min, and 5 to 25% by weight of an inorganic filler (G) having an average particle size of 0.1 to 3 &mgr;m as essential components. This composition may contain, as optional components, another hydrogenated block copolymer (C), an aromatic hydrocarbon copolymer (D), a crystalline polyethylene (E) and a soft ethylene/&agr;-olefin copolymer (F). This composition is excellent in heat resistance, rigidity and impact resistance and can provide a molding having beautiful appearance.

Abstract: A vinyl chloride resin composition containing a graft copolymer A having an average particle diameter of at least 0.15 &mgr;m, prepared by polymerizing 50 to 90% of a solid matter of a rubber latex having a glass transition temperature of at most O° C., the rubber latex being prepared by polymerizing 50 to 100% of butadiene and/or alkyl acrylate, 0 to 40% of an aromatic vinyl monomer, 0 to 10% of a vinyl monomer and 0 to 5% of a polyfunctional monomer, with 10 to 50% of a mixture comprising 10 to 100% of an alkyl methacrylate, 0 to 90% of an aromatic vinyl monomer, 0 to 25% of a vinyl cyamide monomer and 0 to 20% of a vinyl monomer; a graft copolymer B having an average particle diameter of 0.05 to 0.

Abstract: Core/shell particles comprising a core comprising an elastomer having a TG value of <0° C., onto which a shell of a crosslinked copolymer is grafted, where the proportion of the crosslinking component in the copolymer of the shell is from 5 to 90% by weight, based on the total amount of the comonomers of the shell copolymer, are suitable as toughening agents for epoxy resins, with which they have good compatibility.

Abstract: Thermoplastic molding masses made of thermoplastic polymers obtained by mixed graft polymerization and having a glass transition temperature above 20 C., and of special rubber-elastic block copolymers, are characterized by a balanced spectrum of properties.

Abstract: The present invention relates to compatibilizers useful to laminate a layer of a vinyl aromatic polymer such as polystyrene and a polyester such as PET. The compatibilizer comprises a mixture comprising 5-95 weight % of a polyester, 95-5 weight % of an impact modified polymer of a vinyl aromatic monomer such as high impact polystyrene (HIPS) and from 5 to 20 weight % of a hydrogenated block polymer of a vinyl aromatic monomer and a conjugated diolefin sometimes called SEBS.

Abstract: Disclosed is a biaxially stretched styrenic resin sheet obtained by biaxially stretching a resin composition comprising (A) a styrenic resin and (B) crosslinked styrenic fine particles having an average particle size of 0.5 to 15 .mu.m in an amount of from 0.001 to 1% by weight based on the resin composition. The resin composition may further comprise (C) a rubber modified styrenic resin containing a rubber component having an average particle size of 0.1 to 4 .mu.m in such an amount that the rubber component concentration attributed to the rubber modified styrenic resin is from 0.005 to 0.1% by weight based on the resin composition. The styrenic stretched sheets exhibit improved blocking resistance owing to fine unevenness uniformly formed on the surface thereof while retaining the transparency. Even when a number of the sheets or formings obtained therefrom are stacked, they are easily separated apart without blocking.

Abstract: Disclosed is a graft copolymer (A+B) of a styrene-based monomer (A) and a terminal styrene derivative-modified olefin-based macromer (B) of formula (1), having a high degree of syndiotacticity for the stereospecificity of the chains derived from the styrene-based monomer: ##STR1## R is H or alkyl; X is H, halogen, or a substituent having one or more of C, Sn and Si; n is 1 to 4; m is 0 or a natural number; Z is a chain moiety derived from an olefin-based monomer. The copolymer is prepared by copolymerizing (A) and (B) in the presence of a catalyst comprising (a) a transition metal compound, (b) (i) a specific oxygen-containing compound and/or (ii) a compound capable of reacting with the compound (a) to form an ionic complex, and optionally (c) an alkylating agent.

Abstract: A polystyrene-based resin composition, comprising (A) a styrene-based resin with a mainly syndiotactic configuration, (B) a polyolefin, and (C) rubber polymer particles as main components, exhibits excellent heat resistance and impact resistance.

Abstract: A thermoplastic molding composition which features improved impact and flow properties as well as reduced opacity is disclosed. The composition contains(A) 15 to 50 percent of a grafted rubber which contains (a) a crosslinked rubber substrate which contains, as a core, about 1 to 25% relative to its weight of at least one vinylaromatic polymer, and (b) a grafted phase, and(B) 85 to 50 percent of a copolymeric matrix.The composition, which contains no additional grafted rubber components, is also characterized in that (i) the substrate amounts to 60 to 90 percent, and grafted phase amounts to 40 to 10 percent, relative to the weight of the grafted rubber and that (ii) the grafted rubber has a monomodal size distribution and that (iii) the grafted rubber has a weight average particle size of about 0.2 to 1.0 microns.

Abstract: The rigid vinyl chloride resin composition comprises 100 parts by weight of a vinyl chloride resin having an average degree of polymerization of 350 to 600, 5 to 30 parts by weight of an impact-resistant improver, and 5 to 20 parts by weight of an acrylonitrile-styrene copolymer having a weight ratio acrylonitrile and styrene of 1/99 to 9/91. This composition has good impact strength and fluidity.

Abstract: The use of a thermoplastic molding composition differing from ABS and comprising, based on a total of 100% by weight of amounts of components A and B, and, if desired, C and/or D,a: as component A, from 1 to 99% by weight, preferably from 15 to 60% by weight, in particular from 25 to 50% by weight, of a particulate emulsion polymer with a glass transition temperature of below 0.degree. C. and with a median particle size of from 50 to 1000 nm, preferably from 50 to 500 nmb: as component B, from 1 to 99% by weight, preferably from 40 to 85% by weight, in particular from 50 to 75% by weight, of at least one amorphous or partly crystalline polymer,c: as component C, from 0 to 50% by weight of polycarbonates, andd: as component D, from 0 to 50% by weight of fibrous or particulate fillers or mixtures of thesefor producing housings for security equipment.

Abstract: The use of a thermoplastic molding composition differing from ABS and comprising, based on a total of 100% by weight of amounts of components A and B, and, if desired, C and/or D,a: as component A, from 1 to 99% by weight, preferably from 15 to 60% by weight, in particular from 25 to 50% by weight, of a particulate emulsion polymer with a glass transition temperature of below 0.degree. C. and with a median particle size of from 50 to 1000 nm, preferably from 50 to 500 nmb: as component B, from 1 to 99% by weight, preferably from 40 to 85% by weight, in particular from 50 to 75% by weight, of at least one amorphous or partly crystalline polymer,c: as component C, from 0 to 50% by weight of polycarbonates, andd: as component D, from 0 to 50% by weight of fibrous or particulate fillers or mixtures of thesefor producing moldings for sanitary and bathroom fittings.

Abstract: A composition amenable to injection molding and extrusion comprises a syndiotactic styrene resin, a thermoplastic resin such as a polyolefin and an inorganic filler optionally contains a rubber.

Abstract: A primer coating composition for use in polyolefin-backed pressure sensitive tape comprising a maleic anhydride modified chlorinated polyolefin covalently bonded to a maleic anhydride modified A-B-A block copolymer, where A is a thermoplastic polystyrene and B is a rubber midblock, by means of a crosslinking agent capable of reacting with the maleic anhydride functional groups in said polyolefin and said block copolymer a polyolefin-backed pressure sensitive tape employing the primer coating composition; and a method for manufacturing a polyolefin-backed pressure sensitive tape employing the primer coating composition are described.

Abstract: The present invention relates to an impact resistant polystyrene composition which comprises 5 to 97% by weight of an (a) styrenic polymer having syndiotactic configuration, 2 to 95% by weight of a (b) rubbery elastomer having an olefinic component or a polyolefin, 0.5 to 10% by weight of a (c) styrene/olefin block or graft copolymer having a micro-phase separation temperature of 180.degree. C. at the highest when diluted with dioctyl phthalate to a solution with a concentration of 60% by weight and 0.5 to 5% by weight of (d) poly(phenylene ether); according to the present invention, an impact resistant polystyrene composition can be provided which is greatly enhanced in impact resistance and extensibility without impairing heat resistance and modulus of elasticity.

Abstract: A composition comprises (A) a syndiotactic styrene-based resin and (C) rubber polymer particles such as graft copolymers, butadiene or isoprene block copolymers optionally hydrogenated and/or modified with maleic anhydride, and other rubbers, and, optionally, (B) a thermoplastic resin such as a polycarbonate, and/or (D) a filler such as glass fibers.

Abstract: An adhesive resin composition contains at least a partially or wholly graft-modified .alpha.-olefin/aromatic vinyl compound random copolymer having a graft quantity of an unsaturated carboxylic acid or its derivative ranging from 0.01 to 30% by weight. A laminate comprises (I) a polyester resin layer or a polycarbonate layer, (II) an adhesive layer formed from the above-mentioned adhesive resin composition and (III) a saponified olefin/vinyl acetate copolymer layer. The adhesive resin composition is free from lowering of adhesive strength even when contacted with, for example, hot water. The laminate has excellent gas barrier properties and is capable of being subjected to retorting treatment.

Abstract: An object of the present invention is to provide a thermoplastic resin composition exhibiting good impact resistance with maintaining excellent transparency, weather resistance and thermal stability and comprising a thermoplastic resin and at least one of a composite rubber and graft copolymer, the composite rubber comprises an isobutylene polymer and vinyl polymer which are preferably entangled with each other so as not to be separated from each other, and the graft copolymer is prepared by graft-polymerizing a vinyl monomer with the composite rubber, or comprising a thermoplastic resin and at least one of a composite rubber and graft copolymer, the composite rubber comprises an isobutylene polymer and vinyl polymer which are preferably entangled with each other so as not to be separated from each other, the isobutylene polymer has a reactive functional group on its molecular end and/or in its molecular chain and, if necessary, a moiety derived from a crosslinking agent and/or graft-linking agent, the vinyl

Abstract: The invention is a thermoformable polymer blend omprising:A) from 9 to 90 parts by weight of a monovinylidene aromatic polymer or an impact modified monovinylidene aromatic polymer, comprising from 1 to 25 weight percent of a rubber and 75 to 99 weight percent of a monovinylidene aromatic polymer matrix having a weight average molecular weight (M.sub.w) from 50,000 to 400,000, said weight percents being based on the total weight of said impact modified, monovinylidene aromatic polymer;B) from 9 to 90 parts by weight on an olefin polymer, selected from the group consisting of homopolymers of ethylene or propylene and copolymers of ethylene with one or more C.sub.

Abstract: According to the present invention there is provided a cyanoacrylate adhesive composition having high shear bond strength, peeling bond strength and impact bond strength and superior particularly in hot-cold cycle resistance and heat resistance. The cyanoacrylate adhesive composition contains (a) a cyanoacrylate monomer, (b) an elastomer miscible or compatible with the cyanoacrylate monomer, and (c) a core-shell polymer having a core of a rubbery polymer and a shell of a glassy polymer, the core-shell polymer being compatible but not miscible with the cyanoacrylate monomer.

Abstract: A rubber-containing resin composition suitable as an impact modifier for styrene resins (such as styrene homopolymer and copolymers and polymer alloys thereof with other thermoplastic resins), which comprises (A) a graft copolymer having a graft ratio of 10 to 80% by weight wherein a graft component comprising 15 to 60% by mole of at least one vinyl cyanide compound, 40 to 85% by mole of at least one aromatic vinyl compound and 0 to 30% by mole of at least one other monomer copolymerizable with them is graft-copolymerized onto a diene rubber having a volume average particle size of 100 to 1,000 nm by an emulsion polymerization method, and (B) an emulsion-polymerized copolymer of 15 to 60% by mole of at least one vinyl cyanide compound, 40 to 85% by mole of at least one aromatic vinyl compound and 0 to 30% by mole of at least one other monomer copolymerizable with them, which has a weight average molecular weight of 5,000 to 90,000 and a ratio of weight average molecular weight to number average molecular weig

Abstract: A polyolefin alloy and a process for making the same which alloy includes (A) 40% to 80% by weight of polypropylene material which may be a polypropylene homopolymer or a propylene copolymer with ethylene and/or butadiene, the polypropylene copolymer including 5 mole % to 35 mole % polymerized ethylene and/or butadiene, the polypropylene material having a molecular weight Mw of 100,000 to 300,000 and a melt index of 0.1 to 20 g/10 min; (B) 1% to 10% by weight of a functionalized polypropylene, which may be a grafted polypropylene homopolymer or a grafted copolymer of propylene with ethylene and/or butadiene, having a degree of grafting of 0.2% to 10% by weight; (C) 1% to 50% by weight of a mineral having a mean particle size of about 2.5 .mu.m and a maximum particle size of about 20 .mu.m, the mineral being surface-treated with 0.

Abstract: A low gloss thermoplastic resin composition containing a rubber modified thermoplastic resin, a gel polymer and a low molecular weight polyolefin polymer provides low surface gloss properties and improved impact properties.

Abstract: The present invention is directed to rubber modified polymers which contain a non-block grafted rubber having a degree of grafting of at least 30 percent at the point of phase inversion and a specified amount of grafted vinyl aromatic polymer.

Abstract: A thermoplastic resin composition which has low rigidity such as bending strength, bending modulus and tensile strength, high impact resistance, and further low stress and large energy absorption at the time of impact, high heat deformation resistance and excellent moldability and comprises 5 to 65 by weight of the copolymer (I) having Tg (glass transition temperature) of not more than 20.degree. C., 20 to 80 parts by weight of the maleimide copolymer (II) and 15 to 75 part by weight of the graft copolymer (III) having a graft ratio of 10 to 70% so that the total amount of the copolymers (I), (II) and (III) becomes 100 parts by weight, can be obtained.

Abstract: Plastic compositions, containers useful in the storage of red blood cells, and methods for providing such red blood cell storage containers and for storing red blood cells are disclosed. The plastic composition includes a polyolefin copolymer and a plasticizer. The flexibility of such plastic compositions and containers made thereof is substantially unchanged upon heating to a high temperature relative to its flexibility before such heating.

Abstract: Particulate elastomeric graft polymers which are suitable for improving the quality of macromolecular base materials B consist ofa) a grafting core comprising an elastomeric polymer P.sub.K, the particles having a mean particle diameter of from 1 to 150 .mu.m, andb) one or more shells, the outer shell S.sub.a consisting of a polymer P.sub.a which is compatible or partly compatible with the base material B.

Abstract: A resin composition, excellent in a physical property balance between chemical resistance and impact strength, obtained by mixing at least one graft copolymer selected from the group consisting of a graft copolymer in which a copolymer rubber of an alkyl acrylate and a conjugated diene is used, a graft copolymer in which a rubber prepared by seed rubber polymerizing an alkyl acrylate with a conjugated diene rubber is used and a graft copolymer in which a rubber prepared by seed rubber polymerizing an alkyl acrylate with a polyorganosiloxane rubber is used, with a graft copolymer in which a conjugated diene rubber is used, and optionally with a rigid thermoplastic resin.

Abstract: Thermoplastic moulding compositions containingI) At least one graft polymer which is obtainable by emulsion polymerisation of for example styrene and acrylonitrile under special conditions,II) At least one graft polymer that can be obtained by solution, bulk or suspension polymerisation of for example styrene and acrylonitrile in the presence of a rubber,III) At least one rubber-free copolymer of for example styrene and acrylonitrile,and their use for producing mouldings.

Abstract: Thermoplastic moulding compositions of the ABS type, containingI) at least one graft polymer, obtainable by emulsion polymerisation of resin-forming monomers in the presence of a mixture comprising a butadiene polymer latex (A) having a particle diameter d.sub.50 of .ltoreq.320 nm, a particle diameter distribution of 30 to 100 nm in width and a gel content of .ltoreq.70 wt. % and a butadiene polymer latex (B) having a particle diameter d.sub.50 of .gtoreq.370 nm, a particle diameter distribution of 50 to 500 nm in width and a gel content of .gtoreq.270 wt. %,II) at least one graft polymer, obtainable by emulsion polymerisation of resin-forming monomers in the presence of a butadiene polymer latex (C) having a particle diameter d.sub.50 of from 110 to 150 nm, a particle diameter distribution of 20 to 50 nm in width and a gel content of from 80 to 98 wt. %, andIII) at least one rubber-free copolymer composed of resin-forming monomersand the use of the moulding compositions for the production of mouldings.

Abstract: A polymer composition is disclosed comprising (A) a first grafted acrylate rubber substrate having an average rubber phase particle size of from about 0.05 to about 0.2 micron; (B) a second grafted acrylate rubber substrate having an average rubber phase particle size of from about 0.2 to about 2 microns; and (C) a matrix polymer wherein each of the first and second rubber substrates are grafted with (i) a vinyl aromatic monomer; (ii) an unsaturated nitrile monomer; and (iii) optionally a compatible polymerizable comonomer based on the total weight of the grafted rubber substrate wherein at least one of the acrylate rubber substrates is a copolymer of from 83 to 98 percent by weight of an acrylate monomer and from 17 to 2 weight percent of an unsaturated nitrile monomer based on the total weight of the acrylate nitrile monomer copolymer rubber; and wherein the composition has an Izod impact value of at least 80 Joules/meter when tested at 23.degree. C. according to ASTM D-256 using a test specimen of 6.35 cm.

Abstract: A method for particles agglomeration and enlargement of a diene type polymer rubber latex, which comprises subjecting a diene type polymer rubber latex produced by emulsion polymerization, to particles agglomeration and enlargement to obtain a particles-enlarged diene type polymer rubber latex (A), wherein the particles enlargement is allowed to take place by agglomeration based mainly on Brownian coagulation; a graft copolymer (B) of a particles-enlarged diene type polymer rubber latex (A) obtained by the above method; and a thermoplastic resin composition comprising said graft copolymer (B).

Abstract: Polymer particles are prepared by polymerizing at least one monomer in the presence of block copolymers or graft copolymers in an organic dispersant which does not dissolve the polymer to be prepared, and subjecting at least one monomer to free radical polymerization in the presence of the polymer obtained therefrom.

Abstract: Shaped articles produced from thermoplastic molding materials which containA) from 30 to 99.8% by weight of a thermoplastic styrene polymer ofB) from 0.1 to 70% by weight of a graft polymer having an average particle diameter d.sub.50 of less than 300 .mu.mC) from 0.1 to 70% by weight of a particulate polymer as a dulling agent.

Abstract: A glass fiber-reinforced thermoplastic resin excellent in providing a balance between processability, tapping strength and heat resistance. The composition comprising (A) 10 to 60% by weight of a terpolymer which comprises N-phenylmaleimide, styrene and acrylonitrile, (B) 5 to 20% by weight of a graft polymer which comprises at least one rubber selected from the group consisting of a conjugated diene rubber, an ethylene-propylene rubber and an ethylene-butylene rubber comprising ethylene and butylene, to which rubber styrene and acrylonitrile are graft polymerized, (C) 10 to 80% by weight of a copolymer which comprises styrene and acrylonitrile, and (D) 5 to 35% by weight of glass fiber, wherein(a) the terpolymer has an intrinsic viscosity of 0.20 dl/g to 0.70 dl/g, (b) the copolymer has an intrinsic viscosity of 0.40 dl/g to 1.

Abstract: Process for the preparation of ABS which comprises:a) preparing a solution consisting of a diblock linear rubber of the type S-B dissolved in a mixture of monomers comprising styrene and acrylonitrile;b) feeding to the solution of step (a) at least one preformed ABS resin having an average volumetric diameter of the rubber particles contained in the polymeric matrix of more than 1.5 .mu.;c) dissolving the preformed ABS in the solution of step (a);d) feeding in continuous the solution thus obtained to a polymerization reactor for ABS resins;e) polymerizing the final solution to produce an ABS with a multimodal morphology.

Abstract: Compositions of the ABS type containingA) one or more graft rubbers ofA.1) from 10 to 60 parts by weight of one or more monomers onA.2) from 40 to 90 parts by weight of one or more rubber backbones having glass transition temperatures <0.degree.C. andB) at least one rubber-free thermoplastic resin obtained by radical polymerisation of resin-forming monomers,wherein the rubber backbone A.2) has average particle diameters (d.sub.50 values) of from 0.20 to 0.35 .mu.m and the graft rubber A) has been produced by radical emulsion graft polymerisation with the use of an initiator system comprising organic hydroperoxide and an organic reducing agent, and the use thereof for the production of mouldings by deep drawing.

Abstract: The impact resistance of PVC compounds has been shown to be improved by blending with a polybutene polymer. Enhanced thermal stability was also unexpectedly improved with the addition of the polybutene polymer.

Abstract: The present invention relates to an impact resistant polystyrene composition which comprises 5 to 97% by weight of an (a) styrenic polymer having syndiotactic configuration, 2 to 95% by weight of a (b) rubbery elastomer having an olefinic component or a polyolefin, and 0.5 to 10% by weight of a (c) styrene/olefin block or graft copolymer having a micro-phase separation temperature of 180.degree. C. at the highest when diluted with dioctyl phthalate to a solution with a concentration of 60% by weight; according to the present invention, an impact resistant polystyrene composition can be provided which is greatly enhanced in impact resistance and extensibility without impairing heat resistance and modulus of elasticity.

Abstract: Thermoplastic moulding compositions of the ABS type ofI) at least one graft copolymer which is obtainable by emulsion polymerization of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methylstyrene, methyl methacrylate or N-phenylmaleimide, in the presence of at least two butadiene polymer latices of types (A) and (B), which each contain, copolymerized, 0 to 50 wt. % of a further vinyl monomer, and wherein the weight ratio of monomers used to butadiene polymers used is 25:75 to 70:30, andII) at least one copolymer of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methylstyrene, methyl methacrylate or N-phenylmaleimide, characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 .ltoreq.320 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.

Abstract: A polyolefin resin composition which comprises:(A) a polyolefin,(B) 0.1 to 100 parts of a core-shell graft copolymer prepared by graft copolymerizing (b) 5 to 60 parts by weight of a monomer component comprising a copolymerizable vinyl compound selected so that the glass transition temperature of a polymer of said monomer component alone is not less than 25.degree. C., onto (a) 40 to 95 parts by weight of a crosslinked rubber-like polymer having a glass transition temperature of not more than 25.degree. C., and(C) 0 to 400 parts of an inorganic filler, said parts of (B) and (C) being parts by weight per 100 parts by weight of (A). The above-mentioned polyolefin resin composition shows the excellent processability, impact resistance, rigidity and surface property.

Abstract: Elastic-thermoplastic graft polymers manufactured by radical emulsion polymerization of resin-forming vinyl monomers in the presence of rubber present in latex form with the use of a combination of a peroxide of formula (I) ##STR1## where R.sup.1 signifies alkyl, cycloalkyl and aryl groups with 4 to 20 carbon atoms,X the groups --COOH and --SO.sub.3 H as well as their alkali, alkaline-earth or ammonium salts,n an integer in the range from 1 to 6,A alkylene, cycloalkylene and arylene groups with 6 to 40 carbon atomsand a reducing agent as initiator system, a method for their manufacture and their use as moulding compositions.

Abstract: ABS type thermoplastic moulding compounds obtainable byA) producing a rubber latex with an average particle diameter d.sub.50 of 30 to 160 nm and a gel content of 75 to 100 wt. %B) emulsion polymerization of an amount of butadiene and optionally up to 50 wt. % (with reference to the total amount of monomer in stage B) of a comonomer in the presence of the rubber obtained in stage A, such that a rubber latex (B) with an average particle diameter d.sub.50 =220 to 330 nm and a gel content of 25 to 70 wt. % is produced,C) emulsion polymerization of 40 to 95 parts by wt. of a mixture of styrene and acrylonitrile, which optionally contains up to 50 wt. % (with reference to the total amount of monomers used in stage C) of one or more comonomers, in the presence of 5 to 60 parts by wt. (with reference to the solids) of the rubber obtained in stage B by introducing the monomer in such a way that 55 to 90 wt.

Abstract: A thermoplastic elastomeric composition is provided exhibiting reduced levels of hardness and enhanced levels of elongation. The composition contains a chlorinated polyolefin and graft copolymer having a rubber substrate present at a level of 65 to 90 percent by weight based on the total weight of the graft copolymer. Preferably the graft copolymer is an acrylonitrile-butadiene-styrene graft copolymer and preferably the chlorinated polyolefin is a chlorinated polyethylene having a high molecular weight and a relatively low chlorine level. The composition is useful for making molded articles such as interior automotive components requiring high elongation and tear resistance, reduced hardness and often high strain recovery.

Abstract: In a process for preparing a styrenic resin, a rubber graft copolymer (A) having a weight average particle size of 0.05-0.8 .mu.m by coagulation and drying of a rubber graft copolymer latex (a). The rubber graft copolymer latex (a) is made from graft polymerization of a vinyl aromatic monomer and a vinyl cyanide monomer in the presence of a butadienic rubber latex. The styrenic resin is then prepared by a continuous bulk or solution polymerization method. The method comprises continuously charging 80 to 45 parts by weight of a vinyl aromatic monomer, 15 to 50 parts by weight of a vinyl cyanide monomer, 0 to 40 parts by weight of a copolymerizable monomer (totally 100 parts by weight of monomers), 0.1 to 6 parts by weight of the rubber graft copolymer based on 100 parts by weight of monomers and 0.

Abstract: High-impact poly(styrene) resins modified with small-particle-size, multi-stage impact modifiers having a crosslinked poly(butadiene) core and a poly(styrene) or other vinylaromatic polymer shell show an improved balance of impact strength, stiffness and surface gloss, and an improved resistance to environmental stress crazing, when compared to conventional high-impact poly(styrene).

Abstract: A thermoplastic resin composition having excellent characteristics such as impact resistance and coatability is described. The thermoplastic resin composition contains a propylene based polymer and a graft copolymer having an olefin homo/co-polymer portion forming its main chain and a vinyl copolymer portion forming its branched portion. In the graft copolymer, the proportion of the olefin homo/co-polymer portion is 5 to 95% by weight, and the vinyl copolymer portion occupies the remaining weight. The vinyl copolymer portion of the graft copolymer has a hydroxyl group as a functional group. One of the olefin homo/co-polymer portion and the vinyl copolymer portion forms a dispersed phase in the other with a particle size of 0.001 to 10 .mu.m. Consequently, the graft copolymer assumes a multi-phase structure. The thermoplastic resin composition optionally further contains a thermoplastic elastomer.

Abstract: Moulding compounds the ABS type consisting of at least one resin matrix and a particulate graft-rubber polymer distributed therein and produced by emulsion polymerisation, wherein at least 70% of the graft-rubber particles (number) exhibit a structure of the rubber phase which can be detected by photographs taken with the aid of a transmission electron microscope and in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles exhibits an irregularly jagged structure such that, for each particle illustrated, 5 to 30 of such jagged projections are present which differ from an idealised round particle (with a diameter d) by virtue of a diameter d+d/x with x=3 to 15, as well as a process for the manufacture of said moulding compounds.

Abstract: ABS polymer compositions consisting ofA) 5 to 80 parts by weight of at least one ABS polymer prepared by mass polymerization or solution polymerization, having rubber particles with an average particle diameter of from 800 to 15,000 nm and a rubber content of from 1 to 20% by weight,B) 1 to 50 parts by weight of at least one ABS polymer prepared by emulsion polymerization, having an average particle diameter of from 50 to 500 nm and a rubber content of from 20 to 80% by weight,C) 0 to 70 parts by weight of at least one thermoplastic vinyl resin prepared by radical polymerization of at least two monomer components selected from styrene, .alpha.-methylstyrene, methyl methacrylate, acrylonitrile, N-phenylmaleimide andD) 0.5 to 10 parts by weight of at least one polybutadiene prepared by emulsion polymerization, having an average particle diameter d.sub.50 in the latex form of from 80 to 500 nm and a gel content of from 10 to 95% by weight.

Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain core/shell copolymers having either a rubbery, crosslinked core mainly formed from polymerization of butadiene and/or of an alkyl acrylate, or a non-cross-linked core derived mainly of units derived from an alkyl acrylate, and an outer shell mainly formed from polymerization of methyl methacrylate. Such copolymers do not require the presence of functional groups capable of reaction with the hydroxyl groups of the poly(vinyl alcohol) to impart the improved processing.