A halogen-containing polyacrylate derivative having the formula: ##STR1## wherein A is a structural unit derived from a copolymerizable monomer having a double bond; R is ##STR2## wherein each of R.sub.1 and R.sub.2 is a hydrogen atom or a fluorinated methyl group, provided R.sub.1 and R.sub.2 are not hydrogen atoms at the same time, and R.sub.3 is a hydrogen atom or a lower alkyl group; X is a halogen atom or a methyl group; and m is a positive integer, n is 0 or a positive integer, and n/m is from 0 to 2, preferably from 0 to 1.
具有以下公式的含卤聚
丙烯酸酯衍
生物:##STR1##
其中A是来自可共聚单体具有双键的结构单元;R是##STR2##
其中R.sub.1和R.sub.2中的每一个是氢原子或
氟代甲基基团,但R.sub.1和R.sub.2不能同时为氢原子,而R.sub.3是氢原子或低烷基基团;X是卤原子或甲基基团;m是正整数,n为0或正整数,且n/m在0到2之间,最好在0到1之间。