A styrene copolymer which comprises a styrene repeating unit (a) represented by the general formula (I): ##STR1## and an acrylonitrile repeating unit (b) represented by the general formula (II-(b)): ##STR2## unsaturated carboxylic acid or its ester repeating unit (c) represented by the general formula (II-(c)): ##STR3## or maleimide or N-substituted maleimide (d) represented by the general formula (II-(d)): ##STR4## (in the formula, symbols are the same as defined in the specification) wherein stereoregularity of the styrene repeating unit (a) chain is a high degree of syndiotactic configuration is disclosed.
本发明涉及一种
苯乙烯共聚物,其包括由通式(I)表示的
苯乙烯重复单元(a):##STR1## 以及由通式(II-(b))表示的
丙烯腈重复单元(b):##STR2## 不饱和
羧酸或其酯重复单元(c):##STR3## 或马来
酰亚胺或N-取代马来
酰亚胺(d)重复单元,其由通式(II-(d))表示:##STR4## (在公式中,符号与说明书中定义的相同),其中
苯乙烯重复单元(a)链的立体规则性为高度的顺反异构构型。