Epoxy resin and process for preparing the same

Details Epoxy resin and process for preparing the same Epoxy resin and process for preparing the same

1983-05-03

1985-09-10

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549515, 549517, C07D30326, C07D30327, C07D30316, C07D30130

Patent

active

045408025

ABSTRACT:
An epoxy resin of the general formula: ##STR1## wherein X.sub.1 and X.sub.2 are --OH or ##STR2## and X.sub.3 is --OH, ##STR3## or a group of the general formula: ##STR4## in which X.sub.4, X.sub.5 and X.sub.6 are --OH or ##STR5## provided that at least one of X.sub.1 to X.sub.6 is ##STR6## The epoxy resin is prepared by reacting gallic acid or tannic acid with an epihalohydrin in the presence of a phase transfer catalyst and reacting the obtained reaction mixture with an aqueous alkali solution.

REFERENCES:
patent: 3372142 (1968-03-01), Smith
patent: 4284573 (1981-08-01), Arnett et al.
patent: 4373073 (1983-02-01), Wojtech et al.
Chemical Abstracts, vol. 94:209461m (1981).

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