Toughened, high temperature resin matrix system

Details Toughened, high temperature resin matrix system Toughened, high temperature resin matrix system

1989-07-07

1991-09-03

Welsh, Maurice J.

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

Synthetic resins

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

427386, 428413, 528 56, 528 73, 528119, C08L 7504

Patent

active

050456091

ABSTRACT:
A matrix resin system, for the preparation of composite parts, is comprised of a major amount of cyanate resin and an epoxy resin modified by reaction with an isocyanate. The resin system can be toughened by the addition of thermoplastic material, the toughness improvement being enhanced by the addition of a polyester rubber additive. The modified epoxy resin system is itself a resin having good modulus and Tg characteristics. The resin is cured at temperatures of 250.degree.-400.degree. F. in the presence of a metallic complex catalyst, and OH donor.

REFERENCES:
patent: 4168364 (1979-09-01), Seltzer et al.
patent: 4608313 (1986-08-01), Hickner et al.

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