Abstract: Low gloss impact and weather resistant thermoplastic resins comprising a hard matrix polymer and a grafted alkylacrylate rubber having a core of a substantially uncrosslinked alkylacrylate polymer and a graftable overpolymer layer of a high crosslink density alkylacrylate polymer.

Abstract: According to the present invention, there are produced rubber-modified monovinylidene aromatic polymers having three different types of rubber particles. The first is a small particle. The second is a large emulsion particle. The third is a large mass particle. Compositions according to the present invention exhibit good combinations of toughness and gloss.

Abstract: Epoxy resins contain a discontinuous phase dispersed therein, of grafted rubber particles having an insoluble rubber core and having a grafted shell containing a functionalized compound such as that provided by polymerized glycidyl methacrylate, which is reactive under curing conditions with a functionality of the epoxy resin phase. The dispersions are stable and are useful as curable coatings, and for providing toughened resins for structural applications.

Abstract: Rubber reinforced thermoplastic resins are provided comprising EPDM graft terpolymer elastomers and acrylate graft elastomers.

Abstract: Impact modified copolymers of vinyl aromatic, ethylenically unsaturated nitrile and, optionally, methyl methacrylate monomer, wherein the impact modifier comprises (a) large grafted rubber particles of a rubbery alkyl acrylate polymer having a particle size from about 0.5.mu. to 0.8.mu., 0.04 to 0.5 percent by weight of a polymerized crosslinking monomer and from 0.5 to 40 percent grafted rigid phase, and (b) small grafted rubber particles of a rubbery alkyl acrylate polymer having a particle size from about 0.05.mu. to about 0.20.mu., 0.25 to about 2.0 percent of a crosslinking monomer, provided that the weight percentage of crosslinking monomer is at least twice the weight percentage of the crosslinking monomer in the large particle, and from about 15 to about 60 percent by weight grafted rigid phase.

Abstract: Rubber modified styrene-acrylonitrile polymers (ABS) having three different types of rubber particles. One type is small, usually emulsion-produced particle. The second is a large emulsion-produced particle. The third is a large, mass-produced particle. Such compositions exhibit good combinations of toughness and gloss.

Abstract: Carbonate polymer blend compositions which exhibit flame resistant properties comprising a carbonate polymer and grafted rubber compound in which at least a portion of the grafted on the rubber backbone is a flame resistant polymer.

Abstract: Blends of an aromatic polycarbonate, such as a polycarbonate of bisphenol-A, with a monovinylidene aromatic/carboxylic acid random copolymer, such as styrene/acrylic acid copolymer, exhibit improved impact strength and heat resistance. Such blends are particularly useful in the manufacture of molded parts which must be exposed to high temperature during manufacture and use. An example of a particularly desirable blend is a blend of a homopolycarbonate of bisphenol-A with styrene/acrylic acid copolymer and an acrylate resin containing grafted and nongrafted butadiene rubber and methyl methacrylate/ethyl acrylate random copolymer.

Abstract: Particle size distribution in elastomeric latex preparations is advantageously controlled and improved by treatment of the prepared latex with an agglomerating agent (AgAg) copolymer having an elastomeric "core" and grafted thereto a "shell" of interpolymer comprising polymerized acid and ester comonomers. The grafted interpolymer can beneficially be a polymerized mixture of ethyl acrylate and methacrylic acid. Agglomerated latex product can be recovered for direct utilization of its favorably particle size-distributed elastomeric component or for other purposes such as grafted polymer blends, ABS and similar products.

Abstract: Blends of polycarbonate, such as a polycarbonate of bisphenol-A, with (1) a grafted and nongrafted rubber, such as a diene rubber and a diene rubber grafted with a polar polymer, (2) a monovinylidene aromatic/carboxylic anhydride copolymer, such as styrene/maleic anhydride copolymer, and (3) a compatible polymer, such as styrene/acrylonitrile copolymer, exhibit improved impact strength, melt flow properties and heat resistance. Such blends are particularly useful in the manufacture of molded parts which must be exposed to high temperature during manufacture and use.An example of a particularly desirable blend is a blend of a homopolycarbonate of bisphenol-A with styrene/maleic anhydride copolymer and an ABS resin containing grafted and nongrafted butadiene rubber and styrene/acrylonitrile random copolymer.

Abstract: Blends of polycarbonate, such as a polycarbonate of bisphenol-A, with (1) a grafted and nongrafted rubber, such as a diene rubber and a diene rubber grafted with a polar polymer; (2) a monovinylidene aromatic/carboxylic anhydride copolymer, such as styrene/maleic anhydride copolymer, and (3) a compatible polymer, such as styrene/acrylonitrile copolymer, exhibit improved impact strength, melt flow properties and heat resistance. Such blends are particularly useful in the manufacture of molded parts which must be exposed to high temperature during manufacture and use.An example of a particularly desirable blend is a blend of a homopolycarbonate of bisphenol-A with styrene/maleic anhydride copolymer and an ABS resin containing grafted and nongrafted butadiene rubber and styrene/acrylonitrile random copolymer.