Advancing epoxy resins in presence of amino group-containing pho

Details Advancing epoxy resins in presence of amino group-containing pho Advancing epoxy resins in presence of amino group-containing pho

1990-08-16

1992-04-28

Marquis, Melvyn I.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528102, 528112, 525486, C08G 5968

Patent

active

051090996

ABSTRACT:
The process of reacting an epoxy resin with a reactive hydrogen-containing compound or a carboxylic acid anhydride in the presence of a phosphonium catalyst is improved by employing a phosphonium compound having an amino substituent on the cation portion of the phosphonium compound as the catalyst. The invention also concerns precatalyzed epoxy resin compositions, curable compositions and cured compositions.

REFERENCES:
patent: 3948855 (1976-04-01), Perry
patent: 4171420 (1979-10-01), Doorakian et al.
patent: 4302574 (1981-11-01), Doorakian et al.
patent: 4384108 (1983-05-01), Campbell et al.
patent: 4471105 (1984-09-01), Campbell et al.
patent: 4634757 (1987-01-01), Marshall
patent: 4732958 (1988-03-01), Jackson et al.
patent: 4808692 (1989-02-01), Pham et al.

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