Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1986-04-03
1988-04-12
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523403, 523404, 524901, C08L 6302, C08L 3314
Patent
active
047375299
ABSTRACT:
Aqueous thermosetting cationic electrocoating compositions are disclosed in which an amine-functional cationic polymer is dispersed in water with the aid of an acid, a curing agent being added if the polymer is not self-curing, and there is added from 1% to 30% of the polymer content of the composition of an oxirane-free epoxy phosphate. This epoxy phosphate is produced by slowly and incrementally adding a resinous polyepoxide to a solvent solution containing from 0.05 to 0.9 mole of orthophosphoric acid per oxirane equivalent in said polyepoxide together with sufficient water to hydrolyze all of the oxirane functionality which is not consumed by the orthophosphoric acid. When the epoxy phosphate is made in the manner set forth, the salt spray resistance of electrodeposited cured films is improved.
REFERENCES:
patent: 4461857 (1984-07-01), Sekmakas
patent: 4487860 (1984-12-01), Winner
patent: 4503173 (1985-03-01), Martino
patent: 4508765 (1985-04-01), Ring
patent: 4522961 (1985-01-01), Martino
patent: 4598109 (1986-07-01), Sekmakas
Parenti Aurelio
Sekmakas Kazys
DeSoto, Inc.
Ivy C. Warren
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