Stable precatalyzed epoxy resin compositions

Details Stable precatalyzed epoxy resin compositions Stable precatalyzed epoxy resin compositions

1981-06-01

1982-12-28

Nielsen, Earl A.

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

Synthetic resins

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

528104, 528 89, 528 98, 528 99, 525507, 528102, 252182, C08G 5968

Patent

active

043662951

ABSTRACT:
Compositions containing a relatively low equivalent weight epoxy resin and an advancement catalyst for reacting said epoxy resin with a polyhydric phenol are stable at high storage temperatures when the advancement catalyst is a phosphonium salt of phosphoric acid, phosphorous acid or polyphosphoric acid.

REFERENCES:
patent: 3477990 (1969-11-01), Dante et al.
patent: 3931109 (1976-01-01), Martin
patent: 3948855 (1976-04-01), Perry
patent: 4048141 (1977-09-01), Doorakian et al.
patent: 4302574 (1981-11-01), Doorakian et al.

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