Polyaryl ether sulphones
AssigneeAmoco Corporation
InventorsJames E. Harris, Louis M. Maresca, Markus Matzner
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Abstract
Aryl ether sulfone polymers comprising a 4,4'-bis-phenylsulfonyl biphenyl and at least two additional arylene structural units exhibit improved toughness and stress crack resistance and a reduced tendency toward crystallization. The polymers and soluble and film-forming from solution, and may be used as coating and impregnating resins for producing laminates, fiber-reinforced composites and the like.
Claims16
An aryl ether sulphone polymer containing the following ether-liked structural units:
- ##STR25## and at least two of the following:
- ##STR26## wherein R is selected from SO.sub.2, SO, CO, O, C.sub.1 -C.sub.4 alkylidene and a direct bond.
A aryl ether sulphone polymer containing the following ether-linked structural units:
- ##STR31## and at least two of the following:
- ##STR32##
An aryl ether sulfone polymer consisting of from 90 to 10 mole % of a biphenyl-containing structural unit:
- ##STR38## and correspondingly, 10 to 90 mole % of a mixture of at least two additional structural units selected from:
- ##STR39## wherein R is selected from SO.sub.2, SO, O, CO, C.sub.1 -C.sub.4 alkylidene and a direct bond, and wherein said structural units are linked through ether oxygens.
Dependencies are inferred from the claim text.