Phosphonium bicarbonate catalysts for promoting reaction of epox

Details Phosphonium bicarbonate catalysts for promoting reaction of epox Phosphonium bicarbonate catalysts for promoting reaction of epox

1981-10-21

1982-10-12

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525507, 528 99, 528100, 528102, 528104, C08G 5968

Patent

active

043540155

ABSTRACT:
Tetrahydrocarbyl phosphonium bicarbonate salts are described which are unexpectedly effective as catalysts for promoting the reaction between (a) vicinal epoxides and (b) phenols. These catalysts are particularly useful in preparing high molecular weight epoxy resins by the advancement reaction of an epoxy resin with a polyhydric phenol.

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patent: 4302574 (1981-11-01), Doorakian et al.

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