Epoxy-phosphate aqueous dispersions

Details Epoxy-phosphate aqueous dispersions Epoxy-phosphate aqueous dispersions

1982-09-29

1984-01-10

Griffin, Ronald W.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523402, 523424, 528 89, 528109, 528398, C08G 5914, C08L 6300

Patent

active

044254512

ABSTRACT:
Water dispersible epoxy-phosphate ester polymer salts are disclosed which exhibit improved stability in coating compositions contining aminoplast or phenoplast resin. These salts are provided by reacting a resinous polyepoxide having at least about 1.4 oxirane groups per molecule with less than 0.9 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide to form a monoester reaction product containing residual epoxy functionality. The monoester reaction product so-provided is then reacted with at least 1 mol of a volatile amine per equivalent of oxirane functionality in said monoester to provide a water dispersible product lacking oxirane functionality. Ether alcohols, and especially 2-butoxy ethanol, are relied upon to provide dispersions having low viscosity.

REFERENCES:
patent: 2732367 (1956-01-01), Shokal
patent: 4145323 (1979-03-01), Sekmakas et al.
patent: 4256844 (1981-03-01), Martin et al.
patent: 4316922 (1982-02-01), Perine et al.

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