Poly(arylene thioether-ketone-ketone) copolymer and production p

Details Poly(arylene thioether-ketone-ketone) copolymer and production p Poly(arylene thioether-ketone-ketone) copolymer and production p

1993-03-23

1995-01-03

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525537, 528226, C08G 200

Patent

active

053787706

ABSTRACT:
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 ##STR1## and (B) at least one poly(arylene thioether) segment having predominant recurring units of the formula ##STR2## (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.degree. 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.

REFERENCES:
patent: 3919177 (1975-11-01), Campbell
patent: 4772679 (1988-09-01), Fukawa et al.
patent: 4960555 (1990-10-01), Satake et al.
P. C. Dawson, et al. "X-ray Data for Poly(aryl ether ketones)" Polymer Reports, POLYMER, 1980, vol. 21 (May 1980) pp. 577-578.

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