Preparation of hydrophobic coatings
US7485343B1 · kind B1 · utility
43Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Apr 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D7/222
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for preparing a hydrophobic coating by preparing a precursor sol comprising a metal alkoxide, a solvent, a basic catalyst, a fluoroalkyl compound and water, depositing the precursor sol as a film onto a surface, such as a substrate or a pipe, heating, the film and exposing the film to a hydrophobic silane compound to form a hydrophobic coating with a contact angle greater than approximately 150°. The contact angle of the film can be controlled by exposure to ultraviolet radiation to reduce the contact angle and subsequent exposure to a hydrophobic silane compound to increase the contact angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.