Phosphonium phenoxide catalysts for promoting reacting of epoxid

Details Phosphonium phenoxide catalysts for promoting reacting of epoxid Phosphonium phenoxide catalysts for promoting reacting of epoxid

1980-05-12

1981-11-24

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

252182, 260 18EP, 528104, 528361, 528365, 525507, C08G 5968

Patent

active

043025749

ABSTRACT:
Certain tetrahydrocarbyl phosphonium phenoxide salts are described herein which are novel compounds and/or novel catalysts for promoting the reaction between vicinal epoxides and phenols and/or carboxylic acids or anhydrides. These catalysts are particularly useful in preparing high molecular weight epoxy resins by the advancement reaction of diglycidyl ether of bisphenol A with bisphenol A.

REFERENCES:
patent: 3784583 (1974-01-01), Smith
patent: 3948855 (1976-04-01), Perry
patent: 4048141 (1977-09-01), Doorakian et al.
patent: 4122067 (1978-10-01), Anderson
patent: 4132706 (1979-01-01), Doorakian et al.
patent: 4171420 (1979-10-01), Doorakian et al.

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