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US 8,263,700 B2Granted
Pigment dispersions, related coating compositions and coated substrates
AssigneePPG Industries Ohio, Inc.
InventorsShawn P. Duffy, Susan F. Donaldson, Robert E. Jennings
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Abstract
Disclosed are pigment dispersions and coating compositions that include such pigment dispersions. The pigment dispersions include: (a) a pigment; (b) an acid functional, hydroxyl functional and secondary amine functional acrylic polymer having a weight average molecular weight of at least 11,000; and (c) a liquid carrier comprising an organic solvent.
Claims15
A pigment dispersion comprising:
- (a) a pigment;
- (b) an acid functional, hydroxyl functional and secondary amine functional acrylic polymer having a weight average molecular weight of at least 11,000;
- and
- (c) a liquid carrier comprising an organic solvents, wherein the acrylic polymer is a polymerization product of a mixture of monomers comprising:
- (i) an alkyl (meth)acrylate having from 3 to 8 carbon atoms in the alkyl group;
- (ii) a monomer selected from a styrene, methyl (meth)acrylate, and ethyl (meth)acrylate, or a mixture thereof;
- (iii) 0.1 to 5 percent by weight of an ethylenically unsaturated carboxylic acid;
- (iv) a hydroxyl-functional ethylenically unsaturated monomer;
- and
- (v) 0.1 to 5 percent by weight of a secondary amine-functional ethylenically unsaturated monomer, wherein the weight percents are based on the total weight of monomers used to make the acrylic polymer.
7 more elements
An organic solvent borne pigment dispersion comprising:
- (a) a pigment;
- (b) an acid functional, hydroxyl functional and secondary amine functional acrylic polymer having a weight average molecular weight of at least 11,000;
- and
- (c) a liquid carrier comprising predominantly an organic solvent,
- wherein the hydroxyl functional and secondary amine functional acrylic polymer is substantially free of any moieties derived from an alkyl methacrylate monomer having greater than 8 carbon atoms in the alkyl chain, and
- wherein the acrylic polymer is a polymerization product of a mixture of monomers comprising:
- (i) an alkyl (meth)acrylate having from 3 to 8 carbon atoms in the alkyl group;
- (ii) a monomer selected from a styrene, methyl (meth)acrylate, and ethyl (meth)acrylate, or a mixture thereof;
- (iii) 0.1 to 5 percent by weight of an ethylenically unsaturated carboxylic acid:,
- (iv) a hydroxyl-functional ethylenically unsaturated monomer;
- and
- (v) 0.1 to 5 percent by weight of a secondary amine-functional ethylenically unsaturated monomer, wherein the weight percents are based on the total weight of monomers used to make the acrylic polymer.
9 more elements
Dependencies are inferred from the claim text.