Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.

Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.

Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.

Abstract: A repositionable pressure-sensitive adhesive comprising from about 70% to about 99% solid, polymeric, acrylate, inherently tacky, infusible, solvent-insoluble, solvent-dispersible, elastomeric microspheres comprising at least one alkyl acrylate or alkyl methacrylate ester; and at least one polar monomer, and correspondingly, from about 30% to about 1% of a binder copolymer comprising an elastomeric polymeric backbone having pendant therefrom high Tg polymeric moieties.

Abstract: A water-based toner-receptive composition suitable for electrophotographic or xerographic imaging, comprising:a) from about 65 to about 99 parts of a transparent film-forming core/shell latex polymer, wherein the ratio of core to shell of said core/shell latex polymer ranges from about 10/90 to about 90/10, with the core having a lower T.sub.g than the shell;b) from about 1 to about 15 parts polymeric particles; andc) from 0 to about 20 parts of an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.

Abstract: It is herein disclosed crosslinked or latently crosslinkable polyketone polymer comprising the polymer, and a minor amount of an iodide salt, wherein the crosslinking is induced by the action of heat and oxygen. It is also disclosed a process for producing crosslinked or crosslinkable polyketone polymers comprising contacting and admixing the polymer and at least one iodide salt prior to exposure to the action of heat and oxygen.

Abstract: A thermoplastic molding material containing, based on the sum of its constituents A, B and C,A: 70 to 99% by weight of a thermoplastic resin A comprising, based on A,A1: 50 to 100% by weight of a hard matrix A1 comprising, based on A1,A11: 50 to 95% by weight of units of an aromatic vinyl compound or methyl methacrylate or their mixtures (A11) andA12: 5 to 50% by weight of units of acrylonitrile A12;A2: up to 50% by weight of a rubber-elastic particulate graft copolymer A2 comprising, based on A2,A21: 30 to 80% by weight of at least one elastomeric graft base A21 having a median particle size of from 30 to 1000 nm comprising, based on A21,A211: 50 to 100% by weight of units of a 1,3-diene or a C.sub.4 -C.sub.

Abstract: Dispersed polymers comprising microparticles stabilized with two kinds of steric stabilizers are disclosed. The first stabilizer is an essentially linear polymer having a terminal end attached to the microparticle. The second stabilizer is a graft or comb polymer comprising an acrylic backbone having side chains. This stabilizer, in contrast to the first stabilizer may be attached to the core by means of a plurality of functional groups placed along the backbone of the graft polymer.

Abstract: A nonflammable injection-molding resin composition. The composition includes a nonflammable resin component containing a low-molecular-weight styrene resin having a high .alpha.-methylstyrene content; a rubbery polymer having grafted thereon a vinyl cyanide and/or alkyl (meth)acrylate monomer and an aromatic vinyl monomer; a low-molecular weight post-chlorinated polyvinyl chloride resin and, optionally, a vinyl chloride resin; and, as a moldability-improving agent, a specific alkyl acrylate resin comprising a vinyl cyanide monomer, an alkyl acrylate monomer and an optional copolymerizable vinyl monomer. The nonflammable resin composition provides injection-molded articles with a good balance of impact strength and non-peeling properly and is excellent in moldability.

Abstract: The invention provides new fluorine-efficient oil- and water-repellent compositions comprising a fluorochemical oil- and water-repellent agent and a polymer extender comprising at least one percent by weight based on the weight of the extender of interpolymerized units derived from monomers containing at least one blocked or masked isocyanate function.

Abstract: Molding materials contain from 5 to 50% by weight of a first polymer obtained by polymerizing a C.sub.1 -C.sub.20 -alkyl ester of methacrylic or acrylic acid;from 5 to 50% by weight of a second polymer obtained by polymerizing a monomer mixture offrom 75 to 82% by weight of a vinyl aromatic monomer and from 18 to 25% by weight of acrylonitrile or methacrylonitrile;from 10 to 40% by weight of a third polymer containing from 10 to 90% by weight of units of the general formula I ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.2 is C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.12 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, andfrom 10 to 90% by weight of a C.sub.1 -C.sub.20 -alkyl ester of methacrylic or acrylic acid;from 5 to 60% by weight of a graft copolymer having a mean particle diameter (weight average) of less than 200 nm and obtained by polymerizing from 20 to 70% by weight of a monomer mixture offrom 30 to 100% by weight of a C.sub.1 -C.sub.

Abstract: Core/shell additives, useful in modifying the processing and/or physical properties of poly(vinyl chloride) and other thermoplastic matrix polymers, are prepared separately at small particle sizes by emulsion polymerization, co-agglomerated, further encapsulated by a final shell, and isolated by spray-drying or coagulation. The isolated powders are readily re-dispersed to their original particle sizes in the matrix polymer.

Abstract: Proposed is a polyvinyl chloride-based resin composition exhibiting excellent moldability with high flowability in molding and capable of giving molded articles having excellent mechanical properties including tensile strength and impact strength as well as heat resistance along with high resistance against yellowing by weathering. The resin composition comprises (a) a homopolymeric polyvinyl chloride resin having an average degree of polymerization of 700 to 2500, (b) an acrylic rubber-based graft copolymer, (c) an ethylene-vinyl acetate copolymeric resin of a specific copolymerization ratio and (d) an acrylonitrile-styrene copolymeric resin of a specific copolymerization ratio each in a specified weight proportion.

Abstract: Particulate graft polymers composed of a core (a) of cross-linked diene rubber, a first envelope (b) of a cross-linked acrylate rubber, a second envelope (c) of a copolymer of resin-forming monomers and polyallyl monomers having at least three allyl groups in the molecule, and a third envelope (d) of a copolymer or homopolymer of resin forming monomers.

Abstract: An acrylic molded product comprising an acrylic polymer coagulated material having excellent characteristics in impact resistance, optical properties, and hydrothermal resistance; an acrylic polymer coagulated material used for the preparation thereof; an composition comprising thereof; and a process for manufacture thereof; characterized by using an emulsion polymerization and a polymer with multiphase structured material comprising a hard phase and a soft phase and being freeze-coagulated.

Abstract: Rubber-containing graft copolymer particles having excellent powder properties are prepared by mixing, with 100 parts by weight (as solid content) of a slurry of a rubber-containing graft copolymer (A), 0.1 to 10 parts by weight (as solid content) of a rigid non-elastic polymer (B) having a glass transition temperature of 40.degree. C. or higher and a weight-average molecular weight of 10,000 to 500,000 in a substantially slurry state.

Abstract: Polymer particles in a size range between 2 and 15 micrometers, and having a refractive index close to, but not identical with, that of a matrix polymer and optionally having one or more enclosing shells, the outer shell being compatible with the matrix polymer, impart light-diffusing properties to the matrix polymer without degrading its physical properties, while the particles having a closer refractive index match to the matrix polymer impart gloss reduction to the surface of the matrix polymer.

Abstract: A molding material from a particulate graft polymer which consists ofA: a grafting base A based on an acrylate rubber andB: a graft B ofB1: from 40 to 89.9% by weight of at least one vinylaromatic monomer B1B2: from 10 to 49.9% by weight of at least one polar, coplymerizable, ethylenically unsaturated monomer B2B3: from 0.1 to 20% by weight of at least one monomer B3 containing one or more acidic groups.

Abstract: A particulate graft polymer comprisingA: from 30 to 80% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 run, comprising, based on A,A1: from 85 to 99.8% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical,A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2, andA3: from 0.1 to 10% by weight of one or more monomers A3 containing one or more acid groups, orA11: up to 100% by weight of a diene A11,A12: up to 50% by weight of one or more vinyl-aromatic monomers A12,A13: up to 10% by weight of one or more monomers A13 containing one or more acid groups, as the graft base, andB: from 20 to 70% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B,B1: from 50 to 89.9% by weight of one or more vinylaromatic monomers B1,B2: from 10 to 49.9% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, andB3: from 0.

Abstract: Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.The methacrylic resin cast plate has a high transparency and impact resistance.

Abstract: Improved two-component blends which exhibit good adhesion to 4-methylpentene-1 polymers and vinyl alcohol polymers and which may be used as an adhesive interlayer when laminating layers of the polymers are provided. Ethylene-alkyl acrylate copolymers, preferably ethylene n-butyl acrylate copolymers, and modified propylene polymers, preferably maleic anhydride grafted statistical propylene-ethylene copolymers and propylene-ethylene impact copolymers, are combined to obtain the blends of the invention. Useful laminated structures comprised of a layer of poly-4-methylpentene-1 homopolymer or copolymer, a layer of the adhesive blend and a layer of ethylene-vinyl alcohol copolymer with one or more optional layers, such as a paperboard, are also disclosed.

Abstract: A methacrylate resin composition containing 20 to 99% by weight of a methacrylate resin and 80 to 1% by weight of a methacrylic two-layer polymer which has an inner layer and an outer layer and is characterized by the properties: (a) the inner layer having repeating units derived from methyl methacrylate and having a viscosity average molecular weight of 500,000 to 5,000,000, (b) the outer layer of the two-layer polymer having repeating units derived from methyl methacrylate and having a viscosity average molecular weight of 50,000 to 300,000, (c) a weight ratio of the inner layer to the outer layer of 1:9 to 9:1, (d) a glass transition temperature of 50.degree. to 120.degree. C. and (e) an average particle size of 200 to 5000 .ANG., which composition is excellent in moldability, resistance to heat distortion, mechanical properties and also solvent resistance.

Abstract: A thermoplastic resin composition comprising (A) 45 to 99% by weight of a graft copolymer obtained by special graft polymerization of a monomer (b) such as an aromatic vinyl compound, a methacrylic ester, etc. in the presence of grafted polymer rubber (a), and (B) 55 to 1% by weight of a thermoplastic aromatic polyester resin can yield shaped articles excellent in impact resistance, chemical resistance, etc. with excellent processability.

Abstract: Impact modifiers which produce transparent, high notched Izod impact strength blends with amorphous, aromatic polyesters are described. The impact modifiers are core-shell polymers with cores comprised mainly of rubbery polymers of diolefins and vinyl aromatic monomers and shells comprised mainly of styrene copolymers (e.g. styrene and hydroxyalkyl (meth)acrylate).

Abstract: A lubricant for a thermoplastic resin, which is a three-stage polymer obtained by (A) polymerizing 80-100 w.t. % of methyl methacrylate and 0-20 w.t. % of other copolymerizable monomer so that the reduced viscosity .eta.sp/C of the obtained polymer is not higher than 2 dl/g, (B) polymerizing 30-70 weight parts of a monomer mixture composed of 20-80 w.t. % of an acrylic acid ester and 80-20 w.t. % of styrene or a substituted styrene in the presence of 10-60 weight parts of the polymer obtained at stage (A), so that the reduced viscosity .eta.sp/C of the copolymer obtained by polymerizing 5 to 30 weight parts of a monomer or monomer mixture composed of 50-100 w.t. % of a methacrylic acid ester and 0-50 w.t. % of other copolymerizable monomer in the presence of the two-stage polymer formed through stages (A) and (B), is that the total amount of the components used at staged (A), (B) and (C) is 100 weight parts and the reduced viscosity .eta.

Abstract: Disclosed is a polyvinyl chloride resin powder composition for rotational molding, which is prepared by dry-blending a plasticizer and a stabilizer with a polyvinyl chloride resin followed by incorporating from 0.1 to 5 parts by weight, to 100 parts by weight of the polyvinyl chloride resin, of a finely divided polyvinyl chloride resin having a viscosity average polymerization degree of from 2000 to 5000 into the resulting dry blend. Also disclosed is a method of producing a molded article by subjecting the composition to rotational molding. The composition has good powder flowability for rotational molding, and the molded article from the composition is free from pin holes and blocks on the surface thereof.

Abstract: An acrylic molded product comprising an acrylic polymer coagulated material having excellent characteristics in impact resistance, optical properties, and hydrothermal resistance; an acrylic polymer coagulated material used for the preparation thereof; an composition comprising thereof; and a process for manufacture thereof; characterized by using an emulsion polymerization and a polymer with multiphase structured material comprising a hard phase and a soft phase and being freeze-coagulated.

Abstract: Rubber-containing graft copolymer particles excellent in powder properties are prepared by a process comprising mixing, with 100 parts by weight (as solid content) of rubber-containing graft copolymer (A) in a state of slurry, 0.1 to 10 parts by weight of a rigid non-elastic multi-stage polymer (B), in a state of slurry, consisting of 30 to 80% by weight of a (co)polymer component comprising 40 to 100% by weight of methyl methacrylate and 0 to 60% by weight of one or more other monomers copolymerizable therewith being polymerized at least in the first stage and 5 to 70% by weight of a (co)polymer component comprising 70 to 100% by weight of methyl methacrylate and 0 to 30% by weight of one or more other monomers copolymerizable therewith being polymerized in the final stage, the total amount of the (co)polymer components in the respective stages being 100% by weight and the content of polymeric units derived from an acrylic ester in the multi-stage polymer (B) being from 5 to 30% by weight.

Abstract: A thermoplastic resin composition contains from 5 to 98 parts by weight of a styrene resin (A) and/or a vinyl chloride resin (B) and from 95 to 2 parts by weight of a modificed olefin polymer (C) having, per from 2 to 1,000 olefin-derived repeating units, one structural unit containing at least one amido group (a) and at least one reactive group (b) selected from glycidyloxy group and glycidyl group. The composition can be used for producing shaped articles required to have high strength such as interior automotive parts, housings for office appliances, various machine parts, and electrical or electronic parts.

Abstract: Emulsion graft copolymers composed ofa) 2-10% by weight of a core composed of80-99.99% by weight of methyl methacrylate (I),0.01-5% by weight of allyl methacrylate (II),0-19.99% by weight of other monofunctional comonomers (III) and0-3% by weight of other di- or polyfunctional comonomers (IV),b) 15-50% by weight of a first shell composed of60-89.99% by weight of a C.sub.1 -C.sub.20 -alkyl acrylate (V),10-39.99% by weight of a vinylaromatic monomer (VI),0.01-5% by weight of II,0-10% by weight of I and/or III,0-3% by weight of IV,c) 5-20% by weight of a second shell with a composition as indicated under (a),d) 15-50% by weight of a third shell with a composition as indicated under (b),e) 15-30% by weight of a fourth shell composed of80-99.95% by weight of I,0.05-2% by weight of a regulator (VII) and0-19.95% by weight of III,are suitable as additives to increase the impact strength of thermoplastic compositions.

Abstract: Elastomers based on acrylates, which are comprised, in the amount of at least 40 wt. % and as much as 100 wt. %, of one or more copolymers having a molecular weight >50,000 daltons and comprised of units of:i) acrylate monomers in the amount of 50-95 wt. %, andii) macromonomers comprised of a vinylic group and, covalently bonded with such group, a polyvinyl unit selected from the group of acrylates and methacrylates and having a glass transition temperature Tg at least 60.degree. C. and molecular weight 500-100,000 dalton.

Abstract: A polyphenylene ether resin composition comprising(A) a polyphenylene ether resin,(B) a polystyrene resin, and(C) a graft copolymer prepared by graft-polymerizing one or more vinyl monomers onto a compound rubber having an average particle diameter of 0.08 to 0.6 .mu.m and a structure wherein 10 to 90% by weight of a polyorganosiloxane rubber component and 90 to 10% by weight of a polyalkyl (meth)acrylate rubber component are tangled with each other so as not to separate, the total amount of the polyorganosiloxane rubber component and the polyalkyl (meth)acrylate rubber component being 100% by weight of the compound rubber. This resin composition provides molded products superior in impact resistance, heat resistance, mechanical strength, and surface appearance and is superior in moldability and flow properties.

Abstract: A chlorinated polyvinyl chloride/polycarbonate blend is prepared utilizing a conventional vinyl impact modifier such as methyl methacrylate-butadiene-styrene (MBS) copolymer as a compatibilizing agent. The blend has good thermomechanical properties such as good dimensional stability under heat, good impact resistance, and improved processability. The chlorinated polyvinyl chloride, polycarbonate, and impact modifier are simultaneously mixed or, alternatively, a preblend of the polycarbonate and the conventional impact modifier is made to which the CPVC is subsequently added and blended.

Abstract: Improved plasticizer resistant pressure sensitive hot melt adhesive compositions are prepared by incorporating in the adhesive polymer, tackifying resin and oil 5 to 70% by weight of the adhesive of a core shell modifier comprising a crosslinked rubbery core and a glassy thermoplastic polymer shell, the core being crosslinked by the presence therein of up to 5% by weight of a polyunsaturated monomer having two or more non-conjugated sites of unsaturation of unequal reactivity.

Abstract: A resin composition comprising a graft copolymer of a rubbery polymer having a vinyl cyanide compound and an aromatic vinyl compound grafted thereon, and a copolymer comprising a vinyl cyanide compound and an aromatic vinyl compound. A molded article of the resin composition is characterized with improved coating performances.

Abstract: Poly(vinyl chloride) exhibits a useful combination of acceptable flow for injection molding, improved processability, and acceptable heat distortion resistance and toughness when modified with a multi-stage polymer having as one stage an alkyl (meth)acrylate polymer or copolymer containing a low level of a copolymerized unsaturated acid partly to completely in the form of its alkali metal salt. In preferred compositions, the melt viscosity under injection molding conditions of the blend will be equal to or less than that of the PVC alone.

Abstract: A particulate graft polymer comprises from 30 to 90% by weight, of at least one elastomeric polymer A having a median particle size of from 30 to 1000 nm comprising--based on A--from 85 to 99.8% by weight of at least one alkyl acrylate A1 having from 1 to 8 carbon atoms in the alkyl moiety, from 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A2 and from 0.1 to 10% by weight of at least one further monoethylenically unsaturated monomer as grafting base, and from 10 to 70% by weight, grafted onto the elastomeric polymer A, of a sheath B comprising--based on B--from 50 to 90% by weight of at least one aromatic vinyl monomer B1 and from 10 to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, wherein monomer A3 is a hydroxyalkyl acrylate or methacrylate.

Abstract: Polymer blends of(a) graft polymers of vinyl monomers on an alkyl acrylate rubber(b) a partly crosslinked acrylate-based copolymer rubber(c) a resin-like copolymer(d) an ethylene/vinyl acetate copolymer,a process for their production and their use as thermoplastic molding compounds.

Abstract: A high impact polyvinyl halide composition containing a polyvinyl halide polymer, a high rubber content copolymer of acrylonitrile, bitadiene and styrene, a copolymer of .alpha. methyl styrene and acrylonitrile, and a copolymer of ethylene and vinyl acetate.

Abstract: A composition is provided which is coextrudable with vinylidene polyfluoride permitting it to adhere to incompatible polymeric resins, the composition which has a base of an alkyl polymethacrylate and a thermoplastic polymer is comprised of:from 27 to 50 parts by weight of an alkyl polymethacrylate; andfrom 73 to 50 parts by weight of an additive itself constituted for 100 portions by weight of additive of:from 35 to 50 parts by weight of PVDF, andfrom 65 to 50 parts by weight of acrylic or methacrylic elastomer.This composition serves to produce vinylidene polyfluoride compounds capable of coating polymers which are non-compatible with vinylidene polyfluoride. When used as an adhesion agent, one can obtain by coextrusion, compounds of vinylidene polyfluoride and polymers non-compatible with the vinylidene polyfluoride.

Abstract: Polymer particles in a size range between 2 and 15 micrometers, and having a refractive index close to, but not identical with, that of a matrix polymer and optionally having one or more enclosing shells, the outer shell being compatible with the matrix polymer, impart light-diffusing properties to the matrix polymer without degrading its physical properties, while the particles having a closer refractive index match to the matrix polymer impart gloss reduction to the surface of the matrix polymer.

Abstract: The present invention provides a methacrylic resin composition which comprises a mixture of 20-99% by weight of a methacrylic resin and 1-80% by weight of a methacrylic two-layer polymer comprising the following inner layer (a) and outer layer (b) and having the following requirements (c)-(e):(a) the inner layer being obtained by polymerizing 90-99.9% by weight of a monofunctional monomer which is mainly composed of methyl methacrylate and 0.1-10% by weight of a polyfunctional monomer having at least two carbon-carbon double bonds in one molecule,(b) the outer layer being obtained by polymerizing a monofunctional monomer mainly composed of methyl methacrylate in the presence of the inner layer,(c) the weight ratio of the inner layer and the outer layer being 1:9-9:1,(d) the glass transition temperature being 50-120.degree. C., and(e) the average particle size being 200-5000 .cuberoot..This composition is excellent in processability, heat distortion resistance, mechanical properties and solvent resistance.

Abstract: A thermoplastic composition comprising copolymers which contain 45-75% by weight of a vinyl cyanide and 25-55% by weight of an aromatic vinyl compound is described. This composition provides high stress cracking resistance in the presence of HCFC-123 and HCFC-141b.

Abstract: A composition universally usable as an impact modifier for synthetic resins comprising(A) from 10 to 80 percent by weight of a polymer of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is C.sub.5 -C.sub.7 cycloalkyl or such cycloalkyl substituted by C.sub.1 -C.sub.12 alkyl, y has a value such that the corresponding monomer or monomers are from 5 to 50 percent by weight of polymer (A), and x has a value such that the corresponding monomer, together with up to 20 percent by weight of one or more optional comonomers, is the balance by weight, and(B) from 20 to 90 percent by weight of an optionally crosslinked polymer having a glass transition temperature, T.sub.g, below 10.degree. C. and preferably less than -10.degree. C., polymer (B) being at least partially bonded covalently to polymer (A).

Abstract: Thermoplastic molding materials based on a mixture of polybutylene terephthalate and polyethylene terephthalate (a.sub.1), graft polymers having acrylate rubbers as the grafting base (a.sub.2), copolymers of vinylaromatic monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have a balanced property spectrum.

Abstract: Blend compositions are provided comprising first polyvinyl chloride and a second polyvinyl chloride wherein the inherent viscosity (I.V.) of the second polyvinyl chloride, measured in accordance with ASTM1243 is at least about 0.2 units higher than the I.V. of the first polyvinyl chloride. Preferably the I.V. of the second polyvinyl chloride is from 0.2 to 1.0 units higher than the I.V. of said first polyvinyl chloride, with the most preferred difference in I.V. (.DELTA.I.V.) being 0.35 to 0.65 units so as to yield a balance of property improvements including impact resistance, heat distortion temperature, melt flow and melt viscosity. The higher I.V. PVC is present at from 0.1 to less than 20 weight percent of the total PVC content. The compositions also can further comprise melt flow enhancers and/or Tg enhancing agents.

Abstract: Thermoplastic molding compounds, containingA) 5-95 weight % of a thermoplastic homo-, co- or terpolymer of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof,B) 5-95 weight % of a graft polymer ofB.1) 5-90 parts by weight of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof onB.2) 95-10 parts by weight of a rubber with a glass transition temperature .ltoreq.10.degree. C. andC) 0.1-5 parts by weight per 100 parts by weight A+B of a grafted product of resin-forming monomers on an ethylene-propylene-diene terpolymer rubber with a rubber content of 20-60 weight %.

Abstract: A modified nonflammable molding resin composition. The composition is a blend of (A) a nonflammable resin composition composed of 30 to 80% by weight of a styrene resin having a methyl ethyl keton-soluble portion having a reduced viscosity of 0.2 to 0.5 dl/g and 70 to 20% by weight of a vinyl chloride resin having a polymerization degree of 400 to 800; and 0.5 to 15 parts, based on 100 parts by weight of the nonflammable resin composition (A), of (B) a copolymer of a vinyl cyanide, an alkyl methacrylate, an aromatic vinyl compound and another copolymerizable vinyl monomer in specified ratios and having a reduced viscosity of not less than 1.8 dl/g. The composition has improved heat stability in injection molding and excellent heat resistance.

Abstract: Disclosed is an impact-resistant thermoplastic resin composition comprising (a) a graft copolymer (II) prepared by polymerizing a monomer or monomer mixture predominantly comprised of methyl methacrylate and/or styrene in the presence of an agglomerated rubber copolymer (I') latex, and (b) bent-resistant rigid thermoplastic resin (III) comprised of .alpha.-methylstyrene or a maleimide compound. The agglomerated rubber copolymer (I') is prepared by emulsion-polymerizing an alkyl acrylate/1,3-butadiene mixture, and then agglomerating the resulting rubbery copolymer. The agglomeration is effected by adding (a) an acid group-containing copolymer prepared by emulsion polymerizing an alkyl methacrylate/unsaturated monomer mixture, and/or (b) an oxy acid salt selected from alkali metal, alkaline earth metal, zinc, nickel and aluminum salts of oxy acids having as the center element an element selected from elements belonging to the second and third periods of groups IIIA through VIA of the Periodic Table.

Abstract: This invention relates to improved poly(vinyl chloride) compositions which contain ionomeric additive polymers, and to a process for preparing such compositions.