Thermosetting aqueous coating compositions containing epoxy-phos

Details Thermosetting aqueous coating compositions containing epoxy-phos Thermosetting aqueous coating compositions containing epoxy-phos

1983-10-31

1984-07-24

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, 523417, 523424, 523426, 528 89, 528109, 528398, C08G 5914, C08L 6300

Patent

active

044618573

ABSTRACT:
Aqueous thermosetting coating compositions are disclosed characterized by reduced curing requirements and which produce coatings having superior cured properties. These coatings comprise water containing water miscible organic solvent and the compositions have dispersed therein, based on total resin solids, from 25% to 85% of carboxy-functional organic solvent-soluble copolymer salt with a volatile amine in which the copolymer contains hydroxy groups providing an hydroxyl value in the range of 30 to 300, from 5% to 40% of a water soluble or water dispersible aminoplast or phenoplast curing agent, and from 2% to 35%, of a water dispersible epoxy phosphate ester polymer which is an oxirane-function-free, salt reaction product of (1) a monoester reaction product containing residual epoxy functionality, of (a) a resinous polyepoxide having at least about 1.4 oxirane groups per molecule, and (b) less than 0.9 mole of orthophosphoric acid for each oxirane equivalent in the polyepoxide, with (2) at least 1 mole of a volatile amine per equivalent of oxirane functionality in the monoester.

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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