Patent ID: 7303797

Claim:
A polymeric rigid container for foods and beverages which comprises: (a) a polymeric substrate shaped to define a container for a food or a beverage; (b) a first coating layer adhered to at least one surface of the polymeric substrate for retarding the transmission of oxygen and carbon dioxide through the substrate, said first coating layer comprising an organic binder and from 10% up to less than 90% by weight, based on the dry weight of the first coating layer, of an inorganic laminar mineral selected from montmorillonite, laponite, organo-montmorillonite and mixtures thereof, wherein said laminar mineral comprises platelets which are oriented within the first coating layer in a generally parallel three-dimensional and overlapping spaced relationship, and wherein said organic binder is selected from water-soluble or water dispersible organic resins and mixtures thereof; and (c) a second coating layer adhered to said first coating layer which comprises a curable composition comprising a binder component in an organic solvent; wherein the binder component of the second coating layer is selected from the group consisting of: polyester urethanes and acrylo-urethanes having at least two functional hydroxyl groups; hydroxyl functional linear or branched cycloaliphatic moiety-containing reactive oligomers or a blend of such oligomers; and aliphatic or aromatic isocyanates having at least two functional isocyanate groups where the ratio of isocyanate to hydroxyl functionality is from 0.5 to 3.0, based on equivalents.