US5308705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water repellent surface treatment
Assignee: PPG Industries Ohio Inc
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Filing: 1990-09-28
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Granted: 1994-05-03
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Expires: 2010-09-28
Abstract
Abstract A method and article are disclosed wherein a metal, polymeric or inorganic coated 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
2026-11-08 06:05
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C03; C03C; C03C17/00; C03C17/006; C03C17/008; C03C17/009; C03C17/28; C03C17/30; C03C17/32; C03C17/328; Y; Y10; Y10S; Y10S106/00; Y10S106/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
An article comprising a substrate at least a portion of the surface of which is treated with a composition comprising: a. a perfluoroalkyl alkyl silane; and b. a fluorinated olefin telomer, wherein the substrate is uncoated or inorganic coated and selected from the group consisting of metals, polymers, ceramics and enamels.
Claim 2
Dependent Claim
51 words
An article comprising a substrate at least a portion of the surface of which is treated with a composition comprising: a. a perfluoroalkyl alkyl silane; and b. a fluorinated olefin telomer, wherein the substrate is uncoated or inorganic coated and selected from the group consisting of metals, polymers, ceramics and enamels.
Claim 3
Dependent Claim
57 words
An article 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
An article 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
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
19 words
An article according to claim 2, wherein R' is selected from the group consisting of ethyl, vinyl and propyl.
Claim 8
Dependent Claim
22 words
An article according to claim 3, wherein X is selected from the group consisting of chloro, iodo, methyl, methoxy, ethoxy and acetoxy.
Claim 9
Dependent Claim
54 words
An article according to claim 4, wherein said perfluoroalkyl alkyl silane is selected from the group consisting of perflouroalkyl ethyl-trichlorosilane, perfluoroalkyl ethyl-trimethoxysilane, perfluoroalkyl ethyl dichloro(ethyl)silane and perfluoroalkyl ethyl-diethoxy(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.
References Cited (Backward Citations)
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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) | 1997-05-02 | 1997-11-01 | 1998-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-02 | 2001-11-01 | 2002-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-02 | 2005-11-01 | 2006-05-03 | $7700.00 | Window Closed / Lapsed |