Process for preparing low molecular weight epoxy resins

Details Process for preparing low molecular weight epoxy resins Process for preparing low molecular weight epoxy resins

1982-03-18

1983-10-04

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30128

Patent

active

044080620

ABSTRACT:
The epihalohydrin yield in a process for preparing low molecular weight epoxy resins by coupling a polyhydric phenol and an epihalohydrin in the presence of an alkali metal hydroxide and subsequent dehydrohalogenation is improved by employing stoichiometric quantities of the alkali metal hydroxide with respect to the polyhydric phenol in the coupling reaction and also conducting the coupling reaction in the presence of a halohydrin that is at least as reactive as the halohydrin being formed.

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patent: 2801227 (1957-07-01), Goppel
patent: 2840541 (1958-06-01), Pezzaglia
patent: 2841595 (1958-07-01), Pezzaglia
patent: 2848435 (1958-08-01), Griffin et al.
patent: 2986551 (1961-05-01), Griffin et al.
patent: 2986552 (1961-05-01), Landua et al.
patent: 3071560 (1963-01-01), Fetscher et al.
patent: 3094506 (1963-06-01), Weinberg et al.
patent: 3121727 (1964-02-01), Baliker et al.

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