US5328768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Durable water repellant glass surface
Assignee: Vitro SAB de CV
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Filing: 1991-11-29
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Granted: 1994-07-12
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Expires: 2011-11-29
Abstract
Abstract A method and article are disclosed wherein a glass substrate is provided with a more durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer on a surface which comprises a silica primer layer.
Inventors
- 👤 George B. Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:16
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/006; C03C17/008; C03C17/009; C03C17/28; C03C17/30; C03C17/32; C03C17/328; C03C17/34; C03C17/42; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/043; C08J7/046; C09; C09K; C09K3/00; C09K3/18; C03C2217/00; C03C2217/70; C03C2217/76; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
37 words
An article comprising a glass substrate at least a portion of the surface of which is treated with: a. first a silica primer layer; and b. second a perfluoroalkyl alkyl silane layer over the silica primer layer.
Claim 2
Dependent Claim
37 words
An article comprising a glass substrate at least a portion of the surface of which is treated with: a. first a silica primer layer; and b. second a perfluoroalkyl alkyl silane layer over the silica primer layer.
Claim 3
Dependent Claim
73 words
An article according to claim 1, wherein said perfluoroalkyl alkyl silane is selected from compounds having the general formula R n R' m SiX 4-n-m , wherein R is a perfluoroalkyl alkyl radical, R' is an alkyl radical, n is one, m is less than or equal to one, and X is a radical selected from the group consisting of halogen, alkoxy and acetoxy radicals, and is combined with a fluorinated olefin telomer.
Claim 4
Dependent Claim
25 words
An article according to claim 1, wherein said perfluoroalkyl radical is selected from the group consisting of CF 3 to C 30 F 61 .
Claim 5
Dependent Claim
27 words
An article according to claim 3, wherein said perfluoroalkyl radical is selected from the group consisting of C 6 F 13 to C 16 F 33 .
Claim 6
Dependent Claim
27 words
An article according to claim 4, wherein said perfluoroalkyl radical is selected from the group consisting of C 8 F 17 to C 10 F 21 .
Claim 7
Dependent Claim
20 words
An article according to claim 2, wherein R' is selected from the group consisting of methyl, ethyl, vinyl and propyl.
Claim 8
Dependent Claim
22 words
An article according to claim 2, wherein X is selected from the group consisting of chloro, iodo, bromo, methoxy, ethoxy and acetoxy.
Claim 9
Dependent Claim
56 words
An article according to claim 2, wherein said perfluoroalkyl alkyl silane is selected from the group consisting of perfluoroalkyl ethyltrtchlorosilane, perfluoroalkyl ethyltrtacetoxysilane, perfluoroalkyl ethyltrimethoxysilane, perfluoroalkyl ethyl dichloro(ethyl)silane and perfluoroalkyl ethyldiethoxy(methyl)silane, wherein said fluorinated olefin telomer is selected from the group consisting of C m F 2m+1 CH=CH 2 , wherein m is from 1 to 30.
Claim 10
Dependent Claim
13 words
An article according to claim 8, wherein m is from 1 to 16.
Claim 11
Dependent Claim
13 words
An article according to claim 9, wherein m is from 4 to 10.
Claim 12
Independent Claim
42 words
A method of producing a non-wetting surface on a glass substrate comprising the steps of: a. depositing a silica primer layer on a surface of the glass; and b. contacting the silica primer layer with a composition comprising a perfluoroalkyl alkyl silane.
Claim 13
Independent Claim
42 words
A method of producing a non-wetting surface on a glass substrate comprising the steps of: a. depositing a silica primer layer on a surface of the glass; and b. contacting the silica primer layer with a composition comprising a perfluoroalkyl alkyl silane.
Claim 14
Dependent Claim
73 words
A method according to claim 11, wherein said perfluoroalkyl alkyl silane is selected from compounds having the general formula R n R' m SiX 4-n-m , wherein R is a perfluoroalkyl alkyl radical, R' is an alkyl radical, n is one, m is equal to or less than one, and X is a radical selected from the group consisting of halogen, alkoxy and acetoxy radicals, and is combined with a fluorinated olefin telomer.
Claim 15
Dependent Claim
30 words
A method according to claim 11, wherein the step of depositing a silica primer layer is accomplished by pyrolysis of a silicon-containing compound on the substrate surface to form silica.
Claim 16
Dependent Claim
35 words
A method according to claim 11, wherein the step of depositing a silica primer layer is accomplished by sputtering a silicon-containing target in an oxygen-containing atmosphere to deposit a silica-containing film on the substrate surface.
Claim 17
Dependent Claim
43 words
A method according to claim 11, wherein the step of depositing a silica primer layer is accomplished by applying to the substrate surface a solution of a hydrolyzable silicon-containing compound which hydrolyzes and condenses to form a silica-containing film on the substrate surface.
Claim 18
Dependent Claim
25 words
A method according to claim 12, wherein said perfluoroalkyl radical is selected from the group consisting of CF 3 to C 30 F 61 .
Claim 19
Dependent Claim
55 words
A method according to claim 16, wherein said perfluoroalkyl alkyl silane is selected from the group consisting of perfluoroalkyl ethyltrichlorosilane, perfluoroalkyl ethyltriacetoxysilane, perfluoroalkyl ethyltrimethoxysilane, perfluoroalkyl ethyldichloro(methyl)silane and perfluoroalkyl ethyldiethoxy(methyl)silane, wherein said fluorinated olefin telomer is selected from the group consisting of C m F 2m+1 CH=CH 2 , wherein m is from 1 to 30.
Claim 20
Dependent Claim
20 words
A method according to claim 16, wherein R' is selected from the group consisting of methyl, ethyl, vinyl and propyl.
Claim 21
Dependent Claim
22 words
A method according to claim 18, wherein X is selected from the group consisting of chloro, iodo, bromo, methoxy, ethoxy and acetoxy.
Claim 22
Dependent Claim
13 words
A method according to claim 19, wherein m is from 4 to 10.
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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) | 1997-07-11 | 1998-01-10 | 1998-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-11 | 2002-01-10 | 2002-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-11 | 2006-01-10 | 2006-07-12 | $7700.00 | Window Closed / Lapsed |