Process for reacting a phenol with an epoxy compound

Details Process for reacting a phenol with an epoxy compound Process for reacting a phenol with an epoxy compound

1981-08-24

1982-11-09

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 89, 528 92, 528 95, 528104, C08G 5968, C08G 5962

Patent

active

043585787

ABSTRACT:
The instant invention provide a process for increasing the molecular weight of an epoxy resin by reacting (1) a polyepoxide containing more than one vicinal epoxy group in the molecule, preferably a normally liquid polyether of a polyhydric phenol, (2) a polyhydric phenol, (3) a catalytic amount of an alkali metal or alkaline earth metal salt of a non-nucleophilic acid, especially fluoboric acid and perchloric acid, preferably in the presence of (4) a base such as pyridine.

REFERENCES:
patent: 3334068 (1967-08-01), McWhorter et al.
patent: 3477990 (1969-11-01), Dante et al.
patent: 3547881 (1970-12-01), Mueller et al.
patent: 3842037 (1974-10-01), Sinnema
patent: 3948855 (1976-04-01), Perry
patent: 3978027 (1976-08-01), Marshall

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