Disclosed herein are a poly(arylene thioether) block copolymer alternately comprising (A) at least one poly(arylene thioetherketoneketone) block having predominant recurring units of the formula
and (B) at least one poly(arylene thioether) block having predominant recurring units of the formula
(a) the ratio of the total amount of the poly(arylene thioether) block (B) to the total amount of the poly(arylene thioetherketoneketone) block (A) being within a range of 0.1-9 by weight, (B) the weight average molecular weight of the poly(arylene thioether) block (B) being at least 1,000, and (c) said block copolymer having a melt viscosity of 2-100,000 poises as measured at 380°C and a shear rate of 1,200/sec as well as a production process of the block copolymer.
本文公开了一种聚(芳烯烃
硫醚)嵌段共聚物,它交替包含 (A) 至少一个聚(芳烯烃
硫醚酮酮)嵌段,该嵌段的主要循环单元式为
(B) 至少一个具有式中主要递归单元的聚芳基
硫醚嵌段
(a) 聚(芳基
硫醚)嵌段(B)的总量与聚(芳基
硫醚酮酮)嵌段(A)的总量之比为 0.(B) 聚(芳基
硫醚)嵌段(B)的重量平均分子量至少为 1,000,以及 (c) 所述嵌段共聚物在 380°C、剪切速率为 1,200/sec 时的熔融粘度为 2-100,000 波,以及嵌段共聚物的生产工艺。