Epoxy resin compositions

Details Epoxy resin compositions Epoxy resin compositions

1990-05-16

1992-12-22

Dean, Jr., Ralph H.

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

Synthetic resins

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

525487, 525524, 523433, 523435, 528 27, C08L 6302, C08L 6304

Patent

active

051735440

ABSTRACT:
An epoxy resin composition comprising an epoxy resin, a curing agent, and a copolymer mixture comprising a long-chain organopolysiloxane copolymer [I] and a short-chain organopolysiloxane copolymer [II] which are each prepared by the addition reaction of an alkenyl-containing epoxy resin with a long-chain or short-chain organopolysiloxane containing pendant phenyl groups at a weight ratio of [II] to [I] of 0.3 to 0.6 is disclosed. The epoxy resin composition exhibits excellent printability, crack resistance, and moldability properties.

REFERENCES:
patent: 4877822 (1989-10-01), Itoh et al.
Chemistry and technology of Silicones by W. Noll, 1968, pp. 171, 172, 439-441, 579.
Handbook of Epoxy Resins, H. Lee et al., 1967, pp. 6-25 to 6-27.

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