Patent ID: 8114933

Claim:
A thermoplastic rubber grafted copolymer resin composition comprising: (A) about 100 parts by weight of (a 1) about 10 to 100 parts by weight of a rubber-modified grafted copolymer prepared by graft-polymerizing a rubber polymer with 1) vinyl cyanide monomer and aromatic vinyl monomer or 2) methyl methacrylate or N-phenyl maleimide and vinyl cyanide monomer or 3) aromatic vinyl monomer and methyl methacrylate or N-phenyl maleimide and (a2) about 0 to 90 parts by weight of copolymer prepared by polymerizing 1) vinyl cyanide monomer and aromatic vinyl monomer or 2) methyl methacrylate or N-phenyl maleimide and vinyl cyanide monomer or 3) aromatic vinyl monomer and methyl methacrylate or N-phenyl maleimide; (B) about 1 to 30 parts by weight of maleic anhydride copolymer material and (C) about 1 to 20 parts by weight of a clay treated with a compound having onium ion and vinyl group or hydroxyl group wherein the onium ion is ion exchanged with the clay wherein all the maleic anhydride copolymer material present in said thermoplastic rubber grafted copolymer resin composition consists of ungrafted maleic anhydride copolymer produced by polymerization of a monomer mixture consisting of maleic anhydride and at least one of acrylonitrile, methacrylonitrile, ethacrylonitrile, styrene, α-, m-, p-ethyl styrene, α-methyl styrene, or N-phenyl maleimide .