Process for producing article coated with water-repellent film article coated with water-repellent film and liquid composition for water-repellent film, article coated
US6511753B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a process for producing a product coated with a water repellent film which comprises applying on a base substrate a coating liquid containing a silicon alkoxide, a fluoroalkyl group-containing silane compound and an acid dissolved in a solvent and drying; the process for producing a product coated with a water repellent film being characterized in that said coating liquid contains: said silicon alkoxide or a hydrolysate thereof is present at a concentration equivalent to 0.01 to 2% by weight of silica formed by hydrolysis of the silicon alkoxide, said fluoroalkyl group-containing silane compound is present at a concentration equivalent to 0.00001 to 0.15% by weight of silica formed by hydrolysis of the fluoroalkyl group-containing silane compound, 0.003-3 normality of said acid, and 0-20% by weight of water. The invention further provides water repellent products having a good rolling properly of water drops, a high scratching resistance and a high weatherability prepared by the process of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.