Polyether diureide epoxy additives

Details Polyether diureide epoxy additives Polyether diureide epoxy additives

1976-11-22

1978-09-26

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528111, 260830R, 528365, C08G 5948, C08G 5942

Patent

active

041169387

ABSTRACT:
Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of certain polyether diureide additives. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a polyether diureide having terminal ureido groups and a molecular weight of from about 2,000 to about 3,000.

REFERENCES:
patent: 3324176 (1967-06-01), Kirschnek et al.
patent: 3386955 (1968-06-01), Nawakowski et al.
patent: 3386956 (1968-06-01), Nawakowski et al.
patent: 3580887 (1971-05-01), Hubin
patent: 3717612 (1973-02-01), Babayan
patent: 4002598 (1977-02-01), Waddill et al.

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