	US 12,006,445 B2
	Anti-rust composition for metal surface and a method of anti-rust treatment on metal surface
Sheng Xing Wan, Shanghai (CN); and Hai Xia Zou, Shanghai (CN)
Assigned to CHEMETALL GMBH, Frankfurt (DE)
Appl. No. 17/432,378
Filed by Chemetall GmbH, Frankfurt (DE)
PCT Filed Feb. 17, 2020, PCT No. PCT/EP2020/054031 § 371(c)(1), (2) Date Aug. 19, 2021, PCT Pub. No. WO2020/169507, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. PCT/CN2019/075749 (WO), filed on Feb. 21, 2019.
Prior Publication US 2022/0169868 A1, Jun. 2, 2022
Int. Cl. C09D 5/08 (2006.01); C09D 7/20 (2018.01); C09D 7/45 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 133/00 (2006.01); C09D 175/04 (2006.01)

CPC C09D 5/08 (2013.01) [C09D 7/20 (2018.01); C09D 7/45 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 133/00 (2013.01); C09D 175/04 (2013.01)]

16 Claims

1. An anti-rust composition for metal surfaces consisting of:

a) 30% to 80% by weight of water-soluble or water-dispersible acrylic resin selected from the group consisting of polymerized hydroxyalkyl (meth)acrylate ester;

b) 0.1% to 10% by weight of epoxysilane and/or vinylsilane;

c) 0.1% to 3% by weight of silicone surfactant and/or fluorosurfactant;

d) 0.1% to 10% by weight of alcohol and/or ether; and

e) water, and

optionally at least one additive selected from the group consisting of defoamer, crosslinking agent, anti-corrosion agent, silicone and ammonium zirconium carbonate, zirconium acetylacetonate, and zirconium acetate;

wherein the weight percentage of each component is based on the total weight of the aqueous composition.