Catalytic substrate surface

US10029236B2 · kind B2 · utility

Assignee

• JOMA INTERNATIONAL AS · NO

Inventors

• Andreas Westermoen · Frekhaug, NO
• Mark Anthony Plunkett · Bissenkamp, SE
• Matti Ben-Moshe · Modiin-Maccabim-Reut, IL
• Gleb Yakubov · Kettering, GB
• Robert William Corkery · Stockholm, SE

Key dates

• Filing date: Aug 3, 2015
• Grant date: Jul 24, 2018
• Expiry date: Aug 3, 2035

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01C1/005
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

There is disclosed a catalytic substrate surface where in the substrate surface comprises particles in the size range 2-500 nm, said particles comprising TiO2, wherein at least 50 wt % of the Ti in the particles is leachable in 37% HCl. A method for its manufacture is also provided. One advantage is that the higher fractions of Ti leachable in 37% HCl give a better coating with better adhesion, in particular on objects comprising protonatable acidic oxides, such as SiO2. The higher fraction of Ti leachable in 37% HCl gives better transparency and dispersion stability. The resulting surface exhibits both improved activity and improved adhesion of the particles. There is no color change and/or speckles on the substrate, allowing anti-pollution surfaces to be produced also on decorative surfaces. The TiO2-comprising layer is thin and easily applied in the production line.