新颖乙烯醇系共聚物、其制造方法及离子交换膜;NOVEL VINYL ALCOHOL BASED COPOLYMER, METHOD FOR PRODUCTION THEREOF AND ION EXCHANGE MEMBRANE

摘要

本发明提供一种藉由降低乙烯醇(VA)系共聚物之含水率来赋予实用之形态安定性所改质的VA系共聚物、其制造方法及离子交换膜。;(1)一种共聚物(P)，其中以VA系单体单元(A)、伸乙烯基系单体单元(B)及具有羟基以外的极性基之聚合物成分(C)为构成成分。;(2)一种共聚物(P)之制造方法，其特征为：在酸性条件下加热处理含有VA系聚合物成分(A’)及具有羟基以外的极性基之聚合物成分(C)的共聚物(P’)来进行脱水多烯化，并将伸乙烯基系单体单元(B)导入。;(3)一种离子交换膜，其中包含共聚物(P)之具有羟基以外的极性基之聚合物成分(C)为具有离子性基之聚合物成分(CA)的共聚物(PA)作为主成分。;(1) a copolymer (P) comprising a VA based monomer unit (A), a vinylene based monomer unit (B), and a polymer component (C) having a polar group other than a hydroxyl group; ;(2) a method for producing a copolymer (P) comprising heating a copolymer (P’) comprising a VA based polymer component (A’) and a polymer component (C) having a polar group other than a hydroxyl group under an acidic condition to dehydrate and polyenize the copolymer (P’), resulting in introducing a vinylene based monomer unit (B) in the copolymer (P’); and ;(3) an ion exchange membrane comprising, as a major polymer constituent, a copolymer (PA) in which a polymer component (C) having a polar group other than a hydroxyl group is a polymer component having an ionizable group in the copolymer.