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AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorsYoshikatsu Satake, Yoshiyuki Inaguma, Yasuhiro Suzuki
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Disclosed herein are a poly(arylene thioether-ketone) copolymer comprising (A) at least one poly(arylene thioether-ketone) segment having predominant recurring units of the formula ##STR1## wherein the --CO-- and --S-- are in the para position to each other 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) segment (A) ranging from 0.05 to 5 by weight, (b) the number-average polymerization degree of the poly(arylene thioether) segment (B) being higher than 1 but lower than 10, and (c) said copolymer having a melt viscosity of 2-100,000 poises as measured at 350.degree. C. and a shear rate of 1,200/sec as well as a production process of the poly(arylene thioether-ketone) copolymer.
A poly(arylene thioether-ketone) copolymer comprising (A) at least one poly(arylene thioether-ketone) segment having at lest 50 wt. % recurring units of the formula ##STR26## herein the --CO-- and --S-- are in the para position to each other and (B) at least one poly(arylene thioether) segment having at least 50 wt. % recurring units of the formula ##STR27## and having the following properties (a)-(c):
Dependencies are inferred from the claim text.