Title: Preparation for heat-resistant copolymer of alpha-MS and acrylonitrile
Application Number: 85103737 Application Date: 1985.05.16
Publication Number: 1008315 Publication Date: 1987.02.04
Approval Pub. Date: Granted Pub. Date: 1989.09.06
International Classifi-cation: C08F212/12,C08F279/04
Applicant(s) Name: Japan Synthetic Rubber Co., Ltd. Address:
Inventor(s) Name: Masahiko Noro, Shinichi Kimura, Syuji Tsuchikawa
Attorney & Agent: LI RUOJUAN
Abstract:
     A heat-resistant copolymer obtained by copolymerizing (A) 72-82 parts by weight of alpha-methylstyrene and (B) 26-18 parts by weight of acrylonitrile, characterized in that the copolymer contains (a) 0-15% by weight of monomer chain -[(A)-(A)-(A)]-(b) 50% by weight or more of monomer chain -[(A)-(A)-(B)]-, and (c) 50% by weight or less of monomer chain -[(B)-(A)-(B)]-, the total of (a), (b) and (c) being 100% by weight. This copolymer is excellent in heat stability and moldability when molded at high temps., and the blending of this copolymer with other thermoplastic resins gives thermoplastic resins with excellent heat resistance.
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