Composition comprising an epoxy resin, a phenol and an advanceme

Details Composition comprising an epoxy resin, a phenol and an advanceme Composition comprising an epoxy resin, a phenol and an advanceme

1988-08-22

1989-11-14

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525507, 528 94, C08G 5968, C08G 5962

Patent

active

048808920

ABSTRACT:
Advancement catalysts which are a combination of a phosphonium halide or an alkylene phosphorane and a nitrogen heterocycle selected from the group consisting of substituted or unsubstituted imidazoles, benzimidazoles, imidazolines, dihydropyrimidines, tetrahydropyrimidines, dihydroquinazolines, their salts and mixtures thereof, confer high reactivity and selectivity on epoxy resin advancement reactions. The advanced epoxy resins are useful in the preparation of coatings of high quality.

REFERENCES:
patent: 3477990 (1969-11-01), Dante et al.
patent: 3634323 (1972-01-01), Moran
patent: 3738862 (1973-06-01), Klarquist et al.
patent: 3931109 (1976-01-01), Martin
patent: 3931109 (1976-01-01), Martin
patent: 4320222 (1982-03-01), Lopez
patent: 4389520 (1983-01-01), Gannon
patent: 4438254 (1984-03-01), Doorakian et al.
patent: 4634757 (1987-01-01), Marshall et al.

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