申请人:DENKA COMPANY LIMITED
公开号:US11365276B2
公开(公告)日:2022-06-21
To provide a block copolymer that includes an aromatic vinyl compound polymer and a chloroprene polymer, has a number average molecular weight of 100,000 or more, is preferred for a rubber composition and an adhesive composition, and is suitable for industrial production. A block copolymer includes at least one aromatic vinyl compound polymer block and at least one chloroprene polymer block, has a functional group with a structure represented by Chemical Formula (1) or (2), and has a number average molecular weight of 100,000 or more. The chloroprene polymer block has a number average molecular weight of 80,000 or more in total.
(In Chemical Formula (1), R1 is hydrogen, chlorine, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclyl group.)
提供一种嵌段共聚物,它包括芳香族乙烯基化合物聚合物和氯丁二烯聚合物,具有 100,000 或 100,000 以上的平均分子量,优选用于橡胶组合物和粘合剂组合物,并适用于工业生产。嵌段共聚物包括至少一种芳香族乙烯基化合物聚合物嵌段和至少一种氯丁二烯聚合物嵌段,具有化学式(1)或(2)所代表结构的官能团,平均分子量大于等于 100,000。氯丁二烯聚合物嵌段的总平均分子量为 80,000 或以上。
(在化学式(1)中,R1 是氢、氯、取代或未取代的烷基、取代或未取代的烯基、取代或未取代的芳基或取代或未取代的杂环基)。