Patent ID: 6838497
Filing Date: 2005-01-04
Classification: C08F,C08K,C08L

Abstract:
1. A flame retardant thermoplastic resin composition comprising: (A) about 40 to 95 parts by weight of a rubber modified styrene-containing resin composed of (a1) about 20 to 100% by weight of a styrene-containing graft copolymer resin prepared by graft-polymerizing about 90 to 40% by weight of a monomer mixture comprised of about 50 to 82% by weight of styrene-containing monomer, about 19 to 50% by weight of unsaturated nitrile-containing monomer and about 0 to 40% by weight of monomer selected from the group consisting of acrylic acid, methacrylic acid, maleic anhydride and N-substituted maleimide onto about 10 to 60% by weight of a rubber, and (a2) about 80 to 0% by weight of a styrene-containing copolymer resin prepared by copolymerizing about 50 to 82% by weight of styrene-containing monomer, about 19 to 50% by weight of unsaturated nitrile-containing monomer and about 0 to 40% by weight of monomer selected from the group consisting of acrylic acid, methacrylic acid, maleic anhydride and N-substituted maleimide; (B) about 5 to 60 parts by weight of polyphenylene ether resin; (C) about 2 to 30 parts by weight of a styrene-containing copolymer resin having about 5 to 18% by weight of acrylonitrile in the copolymer per 100 parts by weight of the sum of (A) and (B); (D) about 0.5 to 20 parts by weight of an oxaphospholane compound per 100 parts by weight of the sum of (A) and (B); and (E) about 0 to 30 parts by weight of a phosphoric acid ester compound per 100 parts by weight of the sum of (A) and (B) wherein the oxaphospholane compound (D) is represented by the following formula: where R