BLOCK COPOLYMER, PROCESS FOR PRODUCING THE SAME, AND MOLDED OBJECT

摘要

A block copolymer having two or more polymer blocks [A] comprising specific repeating units [1] and at least one polymer block [B] comprising specific repeating units [2] and/or repeating units [3], wherein the ratio Mw(A1)/Mw(A2) is 1.5 or higher, provided that Mw(A1) is the weight−average molecular weight of the polymer block [A1] having the highest weight−average molecular weight among the polymer blocks [A] and Mw(A2) is the weight−average molecular weight of the polymer block [A2] having the lowest weight−average molecular weight among the polymer blocks [A]. The block copolymer is excellent in flowability during molding and mechanical strength during punching.