Anti-fog coated optical substrates
US4080476A · kind A · utility
26Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Nov 15, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The surface of optical substrate are coated with a polymerized monomer of the formula: ##STR1## wherein R is selected from the group consisting of straight and branched alkane or alkylene of up to 10 carbon atoms, R' is selected from the group consisting of hydrogen and lower alkyl, and R" is a monovalent cation. The polymer may be linear, an interpolymer, or a cross linked polymer. The polymeric coating is capable of permitting steam, fog, water vapor, etc. to permeate its matrix and render the coated optical substrate anti-fog when subjected to such conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.