An isobutylene base polymer with a functional group having repeating units derived from isobutylene and at least one unit of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, a methyl group or an ethyl group and R.sup.2 is a divalent organic group, and a number average molecular weight of 500 to 500,000.
一种基于
异丁烯的聚合物,其功能基团具有由
异丁烯衍生的重复单元和至少一个公式的单元:##STR1## 其中R.sup.1是氢原子、甲基基团或乙基基团,R.sup.2是二价有机基团,平均数分子量为500到500,000。