US5368892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-wettable glass sheet
Assignee: Saint Gobain Glass France SAS
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Filing: 1993-04-12
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Granted: 1994-11-29
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Expires: 2013-04-12
Abstract
Abstract The present invention concerns a non-wettable glass sheet comprising a hydrophobic, oleophobic, UV resistant layer and a process for manufacturing the same. The process in accordance with the present invention includes cleaning the glass sheet, contacting the glass sheet with a solution containing a fluorinated organosilane in a non-polar solvent system at a temperature ranging between -10° C. and 25° C. for at least 5 minutes, and rinsing.
Inventors
- 👤 Jean-Marc Berquier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:19
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/42; C03C17/28; C03C17/30; C03C2217/00; C03C2217/70; C03C2217/76; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24926; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
A process for manufacturing a non-wettable glass sheet having a hydrophobic, oleophobic layer resistant to ultraviolet radiation comprising the following steps: a) cleaning the surface of a glass sheet to be coated, b) contacting said glass sheet with a solution of a florinated organosilane selected from the group consisting of tridecafluorotetrahydrooctyltrichlorosilane of the formula CF 3 --(CF 2 ) 5 --(CH 2 ) 2 --SiCl 3 and perfluorodecyltrichlorosilane of the formula CF 3 --(CF 2 ) 7 --(CH 2 ) 2 --SiCl 3 , in a nonpolar solvent or solvent system consisting essentially of 80% by volume of iso-octane, 10% by volume of trichloroethane, and 10% by volume of trichlorotrifluoroethane at a temperature of from -10° C. to 25° C. for at least five minutes, and c) rinsing said glass sheet.
Claim 2
Dependent Claim
131 words
A process for manufacturing a non-wettable glass sheet having a hydrophobic, oleophobic layer resistant to ultraviolet radiation comprising the following steps: a) cleaning the surface of a glass sheet to be coated, b) contacting said glass sheet with a solution of a florinated organosilane selected from the group consisting of tridecafluorotetrahydrooctyltrichlorosilane of the formula CF 3 --(CF 2 ) 5 --(CH 2 ) 2 --SiCl 3 and perfluorodecyltrichlorosilane of the formula CF 3 --(CF 2 ) 7 --(CH 2 ) 2 --SiCl 3 , in a nonpolar solvent or solvent system consisting essentially of 80% by volume of iso-octane, 10% by volume of trichloroethane, and 10% by volume of trichlorotrifluoroethane at a temperature of from -10° C. to 25° C. for at least five minutes, and c) rinsing said glass sheet.
Claim 3
Dependent Claim
27 words
The process of claim 1, wherein said organosilane is a perfluorodecyltrichlorosilane of the formula CF 3 --(CF 2 ) 7 --(CH 2 ) 2 --SiCl 3 .
Claim 4
Dependent Claim
27 words
The process of claim 1, wherein said organosilane is a tridecafluorotetrahydrooctyltrichlorosilane of the formula CF 3 --(CF 2 ) 5 --(CH 2 ) 2 --SiCl 3 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |