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US 10,370,545 B2Granted
Low VOC anionic electrodepositable coating composition
AssigneePPG Industries Ohio, Inc.
InventorsSe Ryeon Lee, Mark L. Follet
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Abstract
The present invention is directed to an electrodepositable coating composition comprising a main vehicle comprising a phosphatized epoxy resin, a plasticizer, and a curing agent, wherein the main vehicle comprises a low-VOC main vehicle. The present invention is also directed to coatings and coated substrates.
Claims22
An electrodepositable coating composition comprising a main vehicle comprising:
- a phosphatized epoxy resin, wherein the phosphatized epoxy resin comprises a reaction product of reactants comprising:
- an epoxy-functional polymerization product comprising the residue of:
- a polyepoxide;
- a polyphenol;
- and
- a mono-functional acid and/or a mono-functional alcohol, wherein the ratio of epoxide functional groups from the polyepoxide to hydroxyl groups from the mono functional alcohol and/or acid groups from the mono-functional acid is from 8.1:1 to 19:1;
- and
- a source of phosphoric acid, a source of phosphonic acid, or combinations thereof;
- a plasticizer;
- and
- a curing agent;
- wherein the main vehicle comprises no more than 1.00 lb/gallon of volatile organic content.
9 more elements
Dependencies are inferred from the claim text.