	US 12,421,401 B2
	Coating compositions for hydrophobic films and articles having hydrophobic surfaces
Feng Gu, Ellicott City, MD (US)
Assigned to W.R. GRACE & CO.- CONN., Columbia, MD (US)
Appl. No. 17/600,851
Filed by W.R. GRACE & CO.-CONN., Columbia, MD (US)
PCT Filed Mar. 31, 2020, PCT No. PCT/US2020/025988 § 371(c)(1), (2) Date Oct. 1, 2021, PCT Pub. No. WO2020/205879, PCT Pub. Date Oct. 8, 2020.
Claims priority of provisional application 62/829,198, filed on Apr. 4, 2019.
Prior Publication US 2022/0363919 A1, Nov. 17, 2022
Int. Cl. C09D 7/62 (2018.01); C08K 3/36 (2006.01); C08K 9/06 (2006.01); C09D 5/00 (2006.01); C09D 7/40 (2018.01); C09D 127/18 (2006.01)

CPC C09D 7/62 (2018.01) [C09D 5/00 (2013.01); C09D 7/68 (2018.01); C09D 7/69 (2018.01); C09D 127/18 (2013.01); C08K 3/36 (2013.01); C08K 9/06 (2013.01); C08K 2201/003 (2013.01); C08K 2201/005 (2013.01); C08K 2201/006 (2013.01)]

29 Claims

1. A coating composition, comprising:

hydrophobized aluminum silicate particles;

a film-forming binder comprising a fluorine containing polymer; and

a solvent,

wherein the hydrophobized aluminum silicate particles comprise aluminum silicate particles having a pore diameter of about 50 Å or more and a hydrophobic coating on a surface of the aluminum silicate particles, and

wherein a weight ratio of the hydrophobized aluminum silicate particles to the film-forming binders in the coating composition is at least about 1:2.5.