Coated metal food container article
AssigneeDow Global Technologies LLC
InventorJoshua M. Katzenstein
Life of this patent
Estimating the term…
Abstract
The present invention relates to an article comprising a cured polymeric film superposing a metal, wherein the cured polymeric film comprises: a) a base polymer comprising structural units of ethylene and a C1-C4-alkyl acrylate or methacrylate; and b) a dispersant which is a copolymer comprising structural units of ethylene and a carboxylic acid monomer; wherein the cured film has a thickness in the range of from 0.5 μm to 25 μm. The article provides a coating that is particularly resistant to absorption of flavor producing compounds such as limonene, thereby providing a more acceptable flavor profile interaction than state-of-the art polyolefin coated metals.
Claims7
An article comprising a cured polymeric film superposing a metal, wherein the cured polymeric film comprises:
- a) a base polymer comprising structural units of ethylene and a C1-C4-alkyl acrylate or methacrylate, wherein the weight-to-weight ratio of the structural units of ethylene and the C1-C4-alkyl acrylate or methacrylate is in the range of from 99.8:0.2 to 50:50;
- and
- b) a dispersant which is a copolymer comprising structural units of ethylene and a carboxylic acid monomer, wherein the copolymer has a melt flow index in the range of from 50 to 2000 g/10 min at 190° C., and the weight-to-weight ratio of structural units of ethylene to carboxylic acid monomer is in the range of from 95:5 to 70:30;
- wherein the dispersant has a concentration in the range of from 9 to 50 weight percent based on the weight of the cured film;
- wherein the sum of the dispersant and the base polymer comprise from 10 to 100 percent of the weight of cured film;
- and wherein the film has a thickness in the range of from 0.5 μm to 25 μm.
Dependencies are inferred from the claim text.