Curing polyepoxide resin binders in high density syntactic foam

Details Curing polyepoxide resin binders in high density syntactic foam Curing polyepoxide resin binders in high density syntactic foam

1983-04-20

1983-10-18

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 55, 521135, 521178, 523218, 523219, 564153, C08J 932

Patent

active

044106394

ABSTRACT:
Disclosure is made of a method of curing the polyepoxide resin binder component of polyepoxide based syntactic foams of high density. Ketones are employed to reversably block primary amine groups on polyamine curing agents during the initial curing. As the cure progresses, the block is removed to complete the cure. The result is a moderation of peak exotherms generally associated with the cure, inhibiting degradation of the product foam.

REFERENCES:
patent: 3296153 (1967-01-01), Snogren
"Handbook of Epoxy Resins", Lee et al., Copyright 1967, Chapter 10, pp. 11 and 12.

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