Superhydrophilic coating composition

US10301477B2 · kind B2 · utility

Assignee

• Behr Process Corporation · US

Inventors

• Jinzhen Shi · Willow View Lane, US
• Ming-Ren Tarng · Irvine, US
• Jigui Li · Tangxia, CN
• Shuxue Zhou · Shanghai, CN
• Limin Wu · Laishui, CN
• Ling Yang · Lianyungang, CN

Key dates

• Filing date: Mar 15, 2013
• Grant date: May 28, 2019
• Expiry date: Oct 8, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A composition for forming a hydrophilic coating includes an organic binder having an average particle size from about 1 to about 100 nm and an inorganic binder having an average particle size from about 1 to about 40 nm. The composition further includes an inorganic photocatalyst that catalyzes an oxidation-reduction reaction. Characteristically, the photocatalyst includes a photocatalytic metal oxide having an average particle size from about 1 to about 50 nm. Advantageously, coatings formed from the composition have improved stain resistance, low contact angle, and resistance to dirt adherence, while maintaining a clear optical character.