Latent catalysts for promoting reaction of epoxides with phenols

Details Latent catalysts for promoting reaction of epoxides with phenols Latent catalysts for promoting reaction of epoxides with phenols

1978-09-26

1979-10-16

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528365, 528366, 560209, 525507, C08G 5968, C08G 5942

Patent

active

041714202

ABSTRACT:
The trisubstituted (2,5-dihydroxyphenyl)phosphonium hydroxide inner salts and their hydrolyzed derivatives are novel latent catalysts for promoting reaction between vicinal epoxides and phenols and/or carboxylic acids (or anhydrides). Precatalyzed epoxy resins are easily prepared using such catalysts.

REFERENCES:
patent: 3477990 (1969-11-01), Dante et al.
patent: 4048141 (1977-09-01), Doorakian et al.

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