Process for preparing epoxy resins from hydroxy benzoic acid and

Details Process for preparing epoxy resins from hydroxy benzoic acid and Process for preparing epoxy resins from hydroxy benzoic acid and

1978-02-21

1978-12-19

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

26034859, 260830TW, 528 95, 528100, C08G 5924

Patent

active

041305493

ABSTRACT:
A process for preparing an epoxy resin, which comprises reacting p-hydroxybenzoic acid and bisphenol A with an epihalohydrin in the presence of a base using a quaternary ammonium salt as a catalyst, the amount of the p-hydroxybenzoic acid being 10 to 90 mole% and the amount of the bisphenol A being 90 to 10 mole%, both based on the total amount of the hydroxybenzoic acid and bisphenol A.

REFERENCES:
patent: 2703765 (1955-03-01), Osdal
patent: 3067171 (1962-12-01), Hoppe
patent: 3316277 (1967-04-01), Frank et al.
patent: 3404018 (1968-10-01), Hicks
patent: 3409590 (1968-11-01), Landua et al.

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