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US 8,092,876 B2Granted
Coating compositions for cans and methods of coating
AssigneeValspar Sourcing, Inc.
InventorsRobert M. O'Brien, Daniel E. Rardon, Rachael Ann Spynda, George K. Bartley, III, Richard H. Evans, T. Howard Killilea, Carl Cavallin
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Abstract
A coating composition for a food or beverage can that includes an emulsion polymerized latex polymer formed by combining an ethylenically unsaturated monomer component with an aqueous dispersion of a water-dispersible polymer.
Claims21
An article comprising:
- a body portion or an end portion of a food or beverage can comprising a metal substrate;
- and
- a coating composition disposed thereon, wherein the coating composition includes an emulsion polymerized latex polymer, and wherein the emulsion polymerized latex polymer:
- (i) comprises a reaction product of an ethylenically unsaturated monomer component polymerized in the presence of an aqueous dispersion of a polymer salt, wherein the ethylenically unsaturated monomer component includes at least one oxirane functional group-containing monomer;
- and
- (ii) is substantially free of bound bisphenol A and aromatic glycidyl ether compounds.
3 more elements
An article comprising:
- a body portion or an end portion of a food or beverage can comprising a metal substrate;
- and
- a coating composition disposed thereon, wherein the coating composition includes an emulsion polymerized latex polymer, and wherein the emulsion polymerized latex polymer:
- (i) comprises a reaction product of an ethylenically unsaturated monomer component polymerized in the presence of an aqueous dispersion of a salt of an acid or anhydride-functional polymer and a tertiary amine, wherein the ethylenically unsaturated monomer component comprises 0.1 wt-% to 30 wt-% of an oxirane-functional alpha, beta-ethylenically unsaturated monomer, based on the weight of the monomer component;
- and
- (ii) is substantially free of bound bisphenol A and aromatic glycidyl ether compounds.
3 more elements
A method, comprising:
- providing a coating composition including an emulsion polymerized latex polymer, wherein the emulsion polymerized latex polymer:
- (i) comprises a reaction product of an ethylenically unsaturated monomer component polymerized in the presence of an aqueous dispersion of a polymer, wherein the ethylenically unsaturated monomer component includes at least one oxirane functional-group containing monomer, and
- (ii) is substantially free of bound bisphenol A and aromatic glycidyl ether compounds;
- and
- applying the coating composition to a metal substrate prior to or after forming the metal substrate into a food or beverage can or portion thereof.
2 more elements
Dependencies are inferred from the claim text.