US 11,667,810 B2
Polyester polymer having phenolic functionality and coating compositions formed therefrom
Robert Lespinasse, Boyer (FR); Benoit Prouvost, L'Abergement de Cuisery (FR); and Paul Stenson, Avon, CT (US)
Assigned to SWIMC LLC, Cleveland, OH (US)
Filed by The Sherwin-Williams Company, Cleveland, OH (US)
Filed on May 22, 2020, as Appl. No. 16/881,410.
Application 14/747,081 is a division of application No. 13/133,257, granted, now 9,096,772, issued on Aug. 4, 2015, previously published as PCT/US2009/067347, filed on Dec. 9, 2009.
Application 16/881,410 is a continuation of application No. 15/948,191, filed on Apr. 9, 2018, granted, now 10,689,539.
Application 15/948,191 is a continuation of application No. 14/747,081, filed on Jun. 23, 2015, granted, now 9,938,430, issued on Apr. 10, 2018.
Claims priority of provisional application 61/121,454, filed on Dec. 10, 2008.
Prior Publication US 2020/0283656 A1, Sep. 10, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 167/00 (2006.01); B65D 1/12 (2006.01); B65D 25/14 (2006.01); C08L 61/06 (2006.01)
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.