Epoxy matrix containing amine hardener and micropulverized polyi

Details Epoxy matrix containing amine hardener and micropulverized polyi Epoxy matrix containing amine hardener and micropulverized polyi

1991-09-11

1994-05-10

Sellers, Robert E.

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

Synthetic resins

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

428414, 428415, C08L 6302, C08L 6304

Patent

active

053108256

ABSTRACT:
The subject invention relates to a toughened epoxy matrix formulation useful as a prepreg for fiber reinforcements comprising at least two epoxy components, an amine hardener and about 10%-25% of a micropulverized polyimide thermoplastic having a molecular weight of from about 20,000 to about 100,000 and Tg of at least about 220.degree. C. The invention further relates to a process for preparing a toughened epoxy matrix formulation comprising:

REFERENCES:
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patent: 4410664 (1983-10-01), Lee
patent: 4558078 (1985-12-01), Draney et al.
patent: 4661559 (1987-04-01), Gardner et al.
patent: 4692272 (1987-09-01), Goswami et al.
patent: 4705833 (1987-11-01), Saito et al.
patent: 4794148 (1988-12-01), Nakamura et al.
patent: 4954195 (1990-09-01), Turpin
T. F. Saunders, W. J. Summa, IBM Technical Disclosure Bulletin vol. 17, No. 2, p. 387, Jul. 1974 "Polyimide epoxy flame retardant resin blend".

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