Storage-stable precatalyzed polyepoxide compositions

Details Storage-stable precatalyzed polyepoxide compositions Storage-stable precatalyzed polyepoxide compositions

1980-04-10

1982-03-16

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528104, 528409, 525524, C08G 5962, C08G 5968

Patent

active

043202225

ABSTRACT:
A precatalyzed, elevated temperature storage-stable epoxy composition is described wherein the catalyst composition is a mixture of a phosphonium halide and an alkali metal salt of a hydroxide or halide. The preparation of higher molecular weight fusion products wherein the precatalyzed epoxy composition is reacted with a polyhydric phenol is also described.

REFERENCES:
patent: 3477990 (1969-11-01), Dante et al.
patent: 3948855 (1976-04-01), Perry
patent: 3978027 (1976-08-01), Marshall
patent: 4026862 (1977-05-01), Smith et al.
patent: 4105634 (1978-08-01), Hanson et al.

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