CPC C09D 167/00 (2013.01) [B65D 1/12 (2013.01); B65D 25/14 (2013.01); C08L 61/06 (2013.01); Y10T 428/1355 (2015.01)] | 19 Claims |
1. A food or beverage can, or portion thereof, comprising:
a metal substrate forming a body portion or an end portion of a food or beverage can;
a cured coating present on the body portion or the end portion of the metal substrate, the cured coating prepared from a liquid coating composition including a water-dispersible polyester-acrylic copolymer obtained by grafting acid-functional ethylenically unsaturated reactants to a polyester polymer backbone;
the polyester polymer backbone being formed from reactants that include one or more polycarboxylic acid reactants and one or more polyol reactants and wherein the reactants include an unsaturated reactant having a reactive group capable of participating in a step-growth reaction;
wherein the acid-functional ethylenically unsaturated reactants are grafted to the unsaturated reactant having a reactive group capable of participating in a step-growth reaction; and
wherein the unsaturated reactant having a reactive group capable of participating in a step-growth reaction includes maleic acid, fumaric acid, tetrahydrophthalic acid, methyltetrahydrophthalic acid, anhydride derivatives thereof, or combinations thereof.
|