	US 12,421,418 B2
	Aqueous coating composition and coating and article formed therefrom
Wei Yang, Shanghai (CN); Hong Chen, Foshan (CN); and Naiwo Yu, Shanghai (CN)
Assigned to SWIMC LLC, Cleveland, OH (US)
Filed by GUANGDONG HUARUN PAINTS CO., LTD, Foshan (CN)
Filed on Jan. 19, 2022, as Appl. No. 17/578,905.
Claims priority of application No. 202110116101.5 (CN), filed on Jan. 27, 2021.
Prior Publication US 2022/0235243 A1, Jul. 28, 2022
Int. Cl. C09D 175/04 (2006.01); C09D 5/00 (2006.01); C09D 7/20 (2018.01); C09D 7/65 (2018.01)

CPC C09D 175/04 (2013.01) [C09D 5/00 (2013.01); C09D 7/20 (2018.01); C09D 7/65 (2018.01)]

14 Claims

1. An aqueous coating composition comprising:

component A comprising a film-forming resin composition, starch, optional aqueous carriers and additional additives; wherein the starch is present in an amount of 2-20% by weight, in an amount of 4-10% by weight relative to the total weight of the component A, wherein the coating formed by the aqueous coating composition has a 60° gloss of no more than 5°; and

wherein the starch has an acidity of less than or equal to 2.0 in which the acidity refers to the amount of aqueous sodium hydroxide solution with a molar concentration of 0.1 mol/L in milliliter consumed by neutralizing 10 grams of the starch without water.