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US 8,835,012 B2Granted
Coating compositions for aluminum beverage cans and methods of coating same
AssigneeValspar Sourcing, Inc.
InventorsRobert M. O'Brien, Daniel E. Rardon, Rachael Ann Spynda, George K. Bartley, Richard H. Evans
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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.
Claims82
A method, comprising the steps of:
- receiving a coating composition that includes an emulsion polymerized latex polymer that 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, wherein the ethylenically unsaturated monomer component includes an oxirane group-containing monomer, and wherein the coating composition is made without using PVC compounds, BPA, or aromatic glycidyl ether compounds;
- and
- spray applying the coating composition onto an interior surface of an aluminum beverage can including a body portion and a bottom end portion.
A method, comprising the steps of:
- receiving a coating composition that includes an emulsion polymerized latex polymer that 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 acrylic polymer and an amine, wherein the ethylenically unsaturated monomer component includes an oxirane group-containing monomer, and wherein the coating composition is made without using PVC compounds, BPA, or aromatic glycidyl ether compounds;
- and
- spray applying the coating composition onto an interior surface of an aluminum beverage can including a body portion and a bottom end portion.
A coated article comprising:
- an aluminum beverage can including a body portion and a bottom end portion;
- and
- a cured coating on an interior surface of the aluminum beverage can, wherein the coating is formed from a coating composition that includes an emulsion polymerized latex polymer that 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, wherein the ethylenically unsaturated monomer component includes an oxirane group-containing monomer, and wherein the coating composition is made without using PVC compounds, BPA, or aromatic glycidyl ether compounds.
Dependencies are inferred from the claim text.