Epoxy resin, process for the preparation thereof and process for

Details Epoxy resin, process for the preparation thereof and process for Epoxy resin, process for the preparation thereof and process for

1992-04-24

1992-11-24

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521178, 525463, 528 98, 528104, C08G 5968

Patent

active

051661845

ABSTRACT:
A normally liquid epoxy resin obtainable by reaction of a bisphenol based oligocarbonate having terminal phenolic hydroxyl groups with an epihalohydrin, followed by dehydrohalogenation. The epoxy resin is capable of forming a tough cured product having improved flexural strength and flexural modulus. A process for the production of an epoxy resin foam in which a polyepoxy compound is crosslinked and simultaneously foamed by the aid of carbonate oligomers having terminal phenolic hydroxyl groups. The product is highly flexible against compression, bending and warp.

REFERENCES:
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patent: 3261808 (1966-07-01), Schnell et al.
patent: 4308185 (1981-12-01), Evans et al.
patent: 4373034 (1983-02-01), Speranza et al.
patent: 4528342 (1985-07-01), Wilson
patent: 4954603 (1990-09-01), Takata et al.

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