Concurrent addition process for preparing high purity epoxy resi

Details Concurrent addition process for preparing high purity epoxy resi Concurrent addition process for preparing high purity epoxy resi

1990-09-18

1991-07-02

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 95, 528366, 528405, 525507, 525534, 549514, 549515, 549517, C08G 5906, C08G 5908

Patent

active

050286862

ABSTRACT:
Epoxy resins which are relatively low in total bound halide are prepared by concurrently and continuously adding a mixture of (1) a mixture of an epihalohydrin, a compound containing an average of more than one group reactive with a vicinal epoxide group and a solvent and (2) an aqueous or organic solution of an alkali or alkaline earth metal hydroxide; to (3) a mixture of epihalohydrin and a solvent.

REFERENCES:
patent: 2848435 (1958-08-01), Griffin et al.
patent: 4499255 (1985-02-01), Wang et al.
patent: 4778863 (1988-10-01), Wang et al.

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