Catalyst for synthesis of vesicular phenoxy resins

Details Catalyst for synthesis of vesicular phenoxy resins Catalyst for synthesis of vesicular phenoxy resins

1988-10-06

1990-07-03

Garvin, Patrick P.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

528219, B01J 3102

Patent

active

049391127

ABSTRACT:
A catalyst for synthesis of vesicular phenoxy resins is disclosed. The catalyst includes a water-insoluble complex of a hydric phenol and a quaternary ammonium or phosphonium salt of the hydric phenol. Preferably, the hydric phenol is an intermediate of the phenoxy resin being produced. Dihydric phenols, such as sulfonyldiphenol are preferred. The invention further relates to a reaction medium for polymerization of phenoxy resins including the above-described catalyst and a solvent medium capable of dissolving the phenoxy resins and otherwise not interfering with the polymerization reaction. The solvent medium is advantageously free of toxic Methyl Cellosolve.

REFERENCES:
patent: 4341658 (1982-07-01), Monnerat et al.
patent: 4692504 (1987-09-01), Frank
patent: 4734535 (1988-03-01), Greif

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