High-heat-resistant, crystalline block copolymers and...

Details High-heat-resistant, crystalline block copolymers and... High-heat-resistant, crystalline block copolymers and...

C - Chemistry, Metallurgy

08

G

400/2011

C08G 75/02 (2006.01)

Patent

CA 2033420

Disclosed herein are a poly(arylene thioether) block copolymer alternately comprising (A) at least one poly(arylene thioetherketoneketone) block having pre- dominant recurring units of the formula Image and (B) at least one poly- (arylene thioether) block having predominant recurring units of the formula Image , (a) the ratio of the total amount of the poly(arylene thioether) block (B) to the total amount of the poly(arylene thioether- ketoneketone) 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 vis- cosity 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.

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