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US 4,101,486 AGranted
Cationic electrodepositable compositions
AssigneePPG Industries, Inc.
InventorsJoseph F. Bosso, Lance C. Sturni
Life of this patent
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Abstract
Aqueous coating compositions comprising a blocked organic polyisocyanate and a resin containing active hydrogen atoms and quaternary ammonium groups are disclosed. The resin is prepared by the reaction of a polyepoxide with an amine-acid salt. These compositions deposit on the cathode to provide coatings having excellent properties.
Claims12
An aqueous based resinous dispersion suitable for use as a coating composition comprising as the resinous phase:
- (A) a quaternary ammonium salt group solubilized synthetic organic resin containing active hydrogens formed from reacting:
- (1) a tertiary amine-acid salt with
- (2) a polyepoxide which contains glycidyl groups;
- said oganic resin containing from 0.05 to 16 percent by weight nitrogen based on total weight of (1) and (2);
- (B) a capped organic polyisocyanate stable at ordinary room temperature in the presence of said resin (A) and reactive with the active hydrogens of said resin (A) at elevated temperatures to form a cured product, cured through urethane crosslinks.
2 more elements
Dependencies are inferred from the claim text.