Photocatalytic coating, photocatalytic coating film and laminated coating film structure
US9023742B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 3, 2011 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Oct 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2238
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a photocatalytic coating in which the coating per se is hardly eroded even when a photocatalyst is excited and a coating surface having strong hydrophobic tendency can be formed. The photocatalytic coating is prepared by dispersing or dissolving at least a photocatalyst, a tetrafluoro-ethylene-based resin obtained by graft polymerization of a sulfonic acid, a compound containing metal ion having an ionic radius not less than an ionic radius of calcium and/or complex ion having an ionic radius not less than the ionic radius of calcium into a solvent. Further, hydroxide is used as the compound containing the metal ion or an electrically neutral surfactant is added to the photocatalytic coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.