Heat-resistant resin composition

Abstract

Abstract PURPOSE:To lower heat shrinkage factor and to prevent discoloration, by mixing a copolymer of an N-substd. maleimide and an arom. vinyl compd. with a copolymer of an arom. vinyl compd., a vinyl cyanide and other copolymerizable vinyl monomer. CONSTITUTION:The titled compsn. has an intrinsic viscosity of 0.2-0.8l/g (in methyl ethyl ketone at 30 deg.C) and consists of 5-85wt% copolymer (A) composed of 56-85wt% N-substd. maleimide and 15-44wt% arom. vinyl compd. and 15-95wt% copolymer (B) composed of 70.5-82wt% arom. vinyl compd., 18-29.5wt% vinyl cyanide and 0-50wt% copolymerizable vinyl monomer. 15-100wt% said compsn. may be mixed with 0-85wt% graft polymer obtd. by graft-polymerizing 20-50wt% arom. vinyl compd., 5-20wt% vinyl cyanide and 0-45wt% other copolymerizable vinyl monomer in the presence of 30-70wt% rubbery polymer, whereby impact resistance can be further improved.

Inventors

• 👤 Yasuyuki Shimozato
• 👤 下里　康乏
• 👤 Yuichi Hashiguchi
• 👤 裕一 橋口
• 👤 Kazumi Nakazawa
• 👤 和美 中沢
• 👤 Shinichi Kimura
• 👤 木村　慎一

Bibliographic Details