Water-repellent coating and coating film
US6579620B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 14, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Nov 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31667
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water-repellent coating has tetrafluoroethylene resin powder, silicone resin binder, and organic solvent. The tetrafluoroethylene resin powder has a ratio of the peak absorbance at 1,800 cm−1 to the peak absorbance at 500 cm−1 of 0.0001 to 0.05 exclusive. A coating film is formed by applying such a coating on a substrate. The coating has the properties of high water repellency, excellent anti-ice-coating, excellent anti-snow-coating, and so on, in spite of not having a large amount of fluororesin powder. In addition, the coating of film keeps the water repellency regardless of whether the coating film is immersed into water for a long time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.