Process for preparation of high molecular weight epoxy resin

Details Process for preparation of high molecular weight epoxy resin Process for preparation of high molecular weight epoxy resin

1997-12-10

2000-08-22

Dawson, Robert

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525523, 525534, 525930, 528 87, 528 93, 528 95, C08L 6302

Patent

active

061074195

ABSTRACT:
Present invention relates to a process for preparing a high molecular weight epoxy resin which has a weight average molecular weight value more than 40,000 and an epoxy equivalent weight less than 10,000 g/eq. This high molecular weight epoxy is prepared by a reaction of a divalent epoxy resin with a bisphenol compound in the presence of a catalyst and a solvent characterized in utilizing 1.10 to 1.03/1 of molar ratio of epoxy group/phenolic hydroxyl group.

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patent: 5776569 (1998-07-01), Cole

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