Patent US4997684A successfully refreshed from Google Patents.
US4997684A
Expired / Lapsed
US
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Method of using perfluoroalkylsilanes to lower the surface energy of glass
Assignee: PPG Industries Ohio Inc
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Filing: 1990-07-19
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Granted: 1991-03-05
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Expires: 2010-07-19
Abstract
Abstract A method is disclosed wherein a glass substrate is provided with a durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer.
Inventors
- 👤 Helmut Franz
- 👤 George B. Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:03
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C17/328; C03C17/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
49 words
A method of producing a non-wetting surface on a glass substrate comprising the steps of: a. contacting a glass surface with a composition comprising a perfluorioalkyl alkyl silane and a fluorinated olefin telomer; and b. heating the glass surface contacted with said composition to produce a durable non-wetting surface.
Claim 2
Independent Claim
49 words
A method of producing a non-wetting surface on a glass substrate comprising the steps of: a. contacting a glass surface with a composition comprising a perfluorioalkyl alkyl silane and a fluorinated olefin telomer; and b. heating the glass surface contacted with said composition to produce a durable non-wetting surface.
Claim 3
Dependent Claim
56 words
A method according to claim 1, wherein said perfluoroalkyl alkyl silane is selected from compounds having the general formula R n R'SiX 4-n wherein R is a perfluoroalkyl radical, R' is an alkyl radical, n is less than 4, and X is a radical selected from the group consisting of alkyl, halogen, alkoxy and acetoxy radicals.
Claim 4
Dependent Claim
25 words
A method according to claim 2, wherein said perfluoroalkyl radical is selected from the group consisting of CF 3 to C 30 F 61 .
Claim 5
Dependent Claim
23 words
A method according to claim 3, wherein said perfluoroalkyl radical is selected form the group consisting of C 6 to C 16 .
Claim 6
Dependent Claim
23 words
A method according to claim 4, wherein said perfluoroalkyl radical is selected from the group consisting of C 8 to C 10 .
Claim 7
Dependent Claim
19 words
A method according to claim 2, wherein R' is selected from the group consisting of ethyl, vinyl and propyl.
Claim 8
Dependent Claim
22 words
A method according to claim 2, wherein X is selected from the group consisting of chloro, iodo, methyl, methoxy, ethoxy and acetoxy.
Claim 9
Dependent Claim
53 words
A method according to claim 7, wherein said perfluoroalkyl alkyl silane is selected from the group consisting of perfluoroalkyl ethyl-trichlorosilane, perfluoroalkyl ethyl-trimethoxysilane, perfluoroalkyl ethyyl-dichloro(methyl)silane and perfluoroalkyl ethyl-diethoxy(methyl)silane, wherein said fluorinated olefin telomer is selected for 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
A method according to claim 8, wherein m is from 1 to 16.
Claim 11
Dependent Claim
13 words
A method according to claim 90, wherein m is from 4 to 10.
References Cited (Backward Citations)
US4529657A
Cited
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