申请人:Mitsubishi Chemical Corporation
公开号:EP3715392A1
公开(公告)日:2020-09-30
Provided is a block copolymer composition which contains a block copolymer having a specific molecular structure and has a molecular weight distribution within an appropriate range. A polymerizable composition containing a macromonomer (A) which has a group having a radical-reactive unsaturated double bond at one terminal of a poly(meth)acrylate segment, a vinyl monomer (B), and an organic iodine compound (C), or a polymerizable composition containing a macromonomer (A), a vinyl monomer (B), an azo-based radical polymerization initiator (E), and iodine is polymerized to obtain a block copolymer composition containing a block copolymer in which constitutional units of all blocks are derived from vinyl monomers and at least one block has a branched structure.
本发明提供了一种嵌段共聚物组合物,该组合物含有具有特定分子结构的嵌段共聚物,其分子量分布在适当范围内。一种可聚合组合物,含有大单体 (A)、乙烯基单体 (B) 和有机碘化合物 (C),大单体 (A)在聚(甲基)丙烯酸酯段的一个末端具有具有自由基反应性不饱和双键的基团,或一种可聚合组合物,含有大单体 (A)乙烯基单体(B)、偶氮基自由基聚合引发剂(E)和碘进行聚合,以获得嵌段共聚物组合物,该组合物含有嵌段共聚物,其中所有嵌段的结构单元均来自乙烯基单体,且至少一个嵌段具有支链结构。