Glass coating
US4293326A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Jun 18, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C17/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of coating glass with tin oxide by exposing the glass to a gaseous medium containing tin tetrachloride vapor under conditions causing formation of the oxide coating by chemical reaction and/or decomposition. The glass is moved continuously through the coating zone and in order to promote a high optical quality of the coating the gaseous medium is formed with a tin tetrachloride concentration corresponding to a partial pressure of at least 2.5.times.10.sup.-3 atm. and contains water vapor in a concentration corresponding to a partial pressure of at least 10.times.10.sup.-3 atm. and the gaseous medium contacts the glass face to be coated while said medium is at a temperature of at least 300.degree. C. and such face is at a temperature above 550.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.