Method of forming a hydrophobic surface by exposing a colloidal sol to UV radiation
US3964906A · kind A · utility
19Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1975 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Sep 26, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of forming a hydrophobic surface is disclosed. The method comprises coating a substrate surface with a stable aqueous colloidal solution, formed by a controlled hydrolysis and nucleation reaction, comprising insoluble hydrous oxide particles of an element selected from Be, In, Cr, Fe, Co, Ni, Tl, Cu, Zn, Sn and mixtures thereof. The coated surface is then exposed to a source of ultraviolet radiation having a wavelength ranging from 1800A to 3300A to render exposed surface regions hydrophobic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.