Heat-curable epoxide resin compositions

Details Heat-curable epoxide resin compositions Heat-curable epoxide resin compositions

1983-09-30

1985-03-26

Nielsen, Earl A.

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

Synthetic resins

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

528 93, 528 94, 528 99, 528361, 528365, 528368, 528407, C08G 5962, C08G 5944

Patent

active

045074453

ABSTRACT:
Epoxide resins are cured by heating with a hydroxyphenylurea of formula ##STR1## where R.sup.2 denotes --NH.sub.2, --NO.sub.2, --Cl, --Br, or alkyl, p denotes zero, x and y each denote zero or 1, and the sum of x+y is 1. Such hydroxyphenylureas may be used alone, as accelerators for heat-curing with other agents such as dicyandiamide, melamine, and carboxylic acid hydrazides, or may be used as the primary curing agent with promoters such as dicyandiamide, melamine, and carboxylic hydrazides.

REFERENCES:
patent: 3386956 (1968-06-01), Nawakowski et al.
patent: 3488376 (1970-01-01), Ulrich
patent: 3660316 (1972-05-01), Schaefer et al.
patent: 3759914 (1973-09-01), Simms et al.
patent: 3956237 (1976-05-01), Doorakian et al.
patent: 4283520 (1981-08-01), Moser et al.
patent: 4404356 (1983-09-01), Andrews
H. Ulrich et al., Synthesis, 4, 277 (1979).
Derwent CPI Abstract No. 50727c/29.

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