	US 11,717,852 B2
	Alkali-soluble resin additives and coating compositions including such additives
Sebastien Gibanel, Givry (FR); Marie Braillon, Tournus (FR); and Samuel Puaud, Tournus (FR)
Assigned to SWIMC LLC, Cleveland, OH (US)
Appl. No. 16/342,880
Filed by SWIMC LLC, Cleveland, OH (US)
PCT Filed Oct. 19, 2017, PCT No. PCT/US2017/057378 § 371(c)(1), (2) Date Apr. 17, 2019, PCT Pub. No. WO2018/075762, PCT Pub. Date Apr. 26, 2018.
Claims priority of provisional application 62/410,255, filed on Oct. 19, 2016.
Prior Publication US 2020/0056066 A1, Feb. 20, 2020
Int. Cl. B05D 7/22 (2006.01); C08F 2/22 (2006.01); B65D 23/02 (2006.01); C09D 133/02 (2006.01); B65D 25/14 (2006.01); B65D 51/00 (2006.01); C08L 33/06 (2006.01); C09D 133/10 (2006.01); C09D 7/65 (2018.01); C09D 5/02 (2006.01); C08F 220/18 (2006.01); C09D 125/14 (2006.01); C09D 7/20 (2018.01); C08F 212/08 (2006.01); C08F 220/06 (2006.01); C08F 220/14 (2006.01); C09D 133/06 (2006.01); C09D 133/08 (2006.01); B05D 7/14 (2006.01); B05D 1/02 (2006.01)

CPC B05D 7/227 (2013.01) [B05D 7/14 (2013.01); B65D 23/02 (2013.01); B65D 25/14 (2013.01); B65D 51/00 (2013.01); C08F 2/22 (2013.01); C08F 212/08 (2013.01); C08F 220/06 (2013.01); C08F 220/14 (2013.01); C08F 220/1802 (2020.02); C08F 220/1804 (2020.02); C08F 220/1806 (2020.02); C08L 33/06 (2013.01); C09D 5/022 (2013.01); C09D 5/024 (2013.01); C09D 7/20 (2018.01); C09D 7/65 (2018.01); C09D 125/14 (2013.01); C09D 133/02 (2013.01); C09D 133/066 (2013.01); C09D 133/08 (2013.01); C09D 133/10 (2013.01); B05D 1/02 (2013.01); B05D 2202/25 (2013.01); B05D 2520/05 (2013.01); C08F 2800/20 (2013.01); C08F 2810/20 (2013.01)]

28 Claims

1. An aqueous coating composition capable of forming an adherent coating onto a metal substrate, the coating composition comprising a physical blend of:

a resin system comprising an acrylic polymer, a polyester polymer, a polyether polymer or a mixture or copolymer thereof; and

an alkali-soluble resin additive having a number average molecular weight of at least 1,000, in an amount less than 10 wt. % based on total resin solids in the coating composition;

wherein the alkali-soluble resin additive is present in the physical blend as a separate component;

wherein the coating is a spray application coating composition; and

wherein if the resin system comprises an acrylic polymer comprising an emulsion polymerized acrylic latex prepared from ethylenically unsaturated monomers, then the coating composition includes more than 50 wt. %, based on total resin solids in the coating composition, of the emulsion polymerized acrylic latex.