C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/2011
C08G 75/10 (2006.01) C08G 75/02 (2006.01)
Patent
CA 2040978
Disclosed herein is a poly(arylene thioether-ketone- ketone) copolymer comprising (A) at least one poly(arylene thioether-ketone-ketone) segment having predominant recurring units of the formula Image and (B) at least one poly(arylene thioether) segment having predominant recurring units of the formula Image , (a) the ratio of the total amount of the poly(arylene thioether) segment (B) to the total amount of the poly(arylene thioether-ketone-ketone) segment (A) ranging from 0.1 to 9 by weight, (b) the weight-average molecular weight of the poly(arylene thioether) segment (B) being at least 200 but lower than 1000, and (c) said 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 poly(arylene thioether-ketone- ketone) copolymer. The copolymer has high crystallinity and heat resistance, uniform composition, and excellent melt stability, processability, handling properties, solvent resistance and moisture absorption resistance.
Inaguma Yoshiyuki
Masuko Jiro
Satake Yoshikatsu
Kirby Eades Gale Baker
Kureha Kagaku Kogyo K.k.
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