Process for preparing a high purity epoxy resin

Details Process for preparing a high purity epoxy resin Process for preparing a high purity epoxy resin

Filed on

1997-05-30

Date issued

1999-12-14

Examiner

Krass, Frederick

Patent Class

Drug, bio-affecting and body treating compositions

SubClass

Designated organic active ingredient containing

SubSubClass

Ester doai

Other Related Categories

549514, 528 95, 528409, 528413, 525507, C08G 5968, C08G 6510

Type

Patent

Status

active

Patent number

060018739

Description

ABSTRACT:
This invention relates to a process for preparing a high purity epoxy resin comprising reacting an aromatic compound containing hyroxyl or amino group with an excess amount of an epihalohydrin in the presence of hydroxides of alkali metal or alkali earth metal in one or more low-boiling aprotic cosolvents under normal or reduced pressure with dewatering to obtain a high purity epoxy resin with low level of hydrolyzable halides.

REFERENCES:
patent: 5028686 (1991-07-01), Liao et al.

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