Aqueous dispersion of low-temperature curable cationic electrode

Details Aqueous dispersion of low-temperature curable cationic electrode Aqueous dispersion of low-temperature curable cationic electrode

1998-07-15

2000-10-10

Dawson, Robert

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

Synthetic resins

Processes of preparing a desired or intentional composition...

204504, 523412, C08K 320, C08L 6302

Patent

active

061302740

ABSTRACT:
Disclosed are an aqueous dispersion for a low-temperature curable cationic electrodeposition coating composition and a process for preparing the same in which the dried coating film of the electrodeposition paint has an epoxy-acrylic double-layered structure for displaying excellent properties, and in which an organic solvent content can be minimized to zero. The aqueous dispersion of the cationic electrodeposition coating composition can be manufactured by using (a) a cationic electrodeposition synthetic resin which is obtained by an amino addition reaction of a polyepoxide, (b) an acrylic cationic electrodeposition resin having an amino group, (c) an ester-modified styrene-allyalcohol copolymer synthesized by an esterification reaction of styrene-allylalcohol copolymer with a fatty acid; and (d) a polyurethane-type crosslinking agent prepared by the reaction of methyethyl ketoxime-partially-blocked diisocyanate with trimethylol propane. The cationic electrodeposition coating composition by using the aqueous dispersion of the cationic electrodeposition resin composition has a superior low-temperature curability. The cured coated film has an epoxy-acrylic double-layered structure to give a high functionality, for improving properties such as weather-resistance, yellowing resistance, etc.

REFERENCES:
patent: 3984299 (1976-10-01), Jerabek
patent: 4865705 (1989-09-01), Hendrikx

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