Back to results
US 9,598,588 B2Granted
Cationic electrodepositable coating compositions capable of forming low gloss coatings
AssigneePPG Industries Ohio, Inc.
InventorsLorraine Hsu, Kelly Moore, Michael Sandala
Life of this patent
Estimating the term…
Abstract
Disclosed herein are cationic electrodepositable coating compositions that are capable of providing cured coatings of low gloss.
Claims20
An electrodepositable coating composition comprising:
- (a) an acrylic polymer that is a polymerization product of a dispersion of a polymerizable ethylenically unsaturated monomer composition polymerized in the presence of a cationic salt group containing polymeric dispersant dispersed in a dispersing medium comprising water, wherein the dispersant has a Mz of 200,000 to 2,000,000, wherein the monomer composition comprises a monomer comprising three or more ethylenically unsaturated groups per molecule, and wherein the water is present in the dispersing medium in an amount of from 40 percent by weight to 90 percent by weight based on the total weight of the dispersion;
- (b) a cationic salt group containing polymer different from the acrylic polymer and polymeric dispersant;
- and
- (c) a curing agent,
- wherein the sum of the acrylic polymer in (a) and the polymeric dispersant in (a) is greater than 8.0 percent by weight, based on the total weight of resin solids in the composition.
2 more elements
An electrodepositable coating composition comprising:
- (a) an acrylic polymer that is a polymerization product of a dispersion of a polymerizable ethylenically unsaturated monomer composition polymerized in the presence of a cationic salt group containing polymeric dispersant dispersed in a dispersing medium comprising water, wherein the dispersant has a Mz of 200,000 to 2,000,000;
- wherein the polymeric dispersant comprises the reaction product of an ethylenically unsaturated monomer composition comprising:
- (i) 50 up to 70 percent by weight of a C1-C18 alkyl (meth)acrylate;
- (ii) 5 up to 25 percent by weight of a hydroxy-functional (meth)acrylate;
- (iii) 1 up to 10 percent by weight of a vinyl aromatic compound;
- (iv) 10 up to 20 percent by weight of a epoxide functional monomer;
- and
- (v) 0.1 to 5 percent by weight of a monomer comprising two ethylenically unsaturated groups per molecule;
- wherein the acrylic polymer is a polymerization product of a polymerizable ethylenically unsaturated monomer composition comprising:
- (i) 20 up to 60 percent by weight of a C1-C18 alkyl (meth)acrylate;
- (ii) 5 up to 15 percent by weight of a hydroxy-functional (meth)acrylate;
- (iii) 20 up to 60 percent by weight of a vinyl aromatic compound;
- and
- (iv) 0.1 to 5 percent by weight of a monomer comprising three or more ethylenically unsaturated groups per molecule;
- (b) a cationic salt group containing polymer different from the acrylic polymer and polymeric dispersant;
- and
- (c) a curing agent,
- wherein the sum of the acrylic polymer in (a) and the polymeric dispersant in (a) is greater than 8.0 percent by weight, based on the total weight of resin solids in the composition.
15 more elements
Dependencies are inferred from the claim text.