Novel oligomeric diamine hardeners and their use for curing epox

Details Novel oligomeric diamine hardeners and their use for curing epox Novel oligomeric diamine hardeners and their use for curing epox

1987-04-06

1988-05-24

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525471, 525534, 528125, 528149, 528150, 564328, 564430, C08G 5950

Patent

active

047467185

ABSTRACT:
Diamines of the structure ##STR1## Wherein X is --SO.sub.2 -- or --CO--, Y is O or S, and Ar is a linear aryl ether moiety comprising from 1 to 80 aryl rings, are epoxy resin curing agents providing cured resins with improved moisture resistance and toughness. The resins are particularly useful in preparing prepregs and composites.

REFERENCES:
patent: 3920768 (1975-11-01), Kwiatkowski
patent: 4579885 (1986-04-01), Domeier et al.
patent: 4624997 (1986-11-01), Robeson et al.
patent: 4645803 (1987-02-01), Kohli et al.
patent: 4665150 (1987-05-01), Tesch et al.

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