EP0545201B1
Expired / Lapsed
EP
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Durable water repellent glass surface
Assignee: PPG Industries Ohio Inc
•
Filing: 1992-11-23
•
Granted: 1999-10-27
•
Expires: 2012-11-23
Abstract
No abstract record available.
Inventors
- 👤 George Brian Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 02:01
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: 25
Claim 1
Independent Claim
64 words
An article comprising a substrate having a glass or a glass-like surface at least a
portion of which is
treated with a. a first layer of a sol-gel applied oxide primer selected
from silica and silica mixed with other inorganic oxides; and b. a second layer Of a perfluoroalkylalkyl silane over the
oxide primer layer; wherein said primer layer is about 10 nm thick.
Claim 2
Dependent Claim
25 words
An article according to claim 1 wherein the oxide primer contains
oxides of metals selected from the group consisting of aluminum,
titanium, zirconium and silicon,
Claim 3
Dependent Claim
23 words
An article according to any of claim 1 or 2 wherein said substrate
is selected from the group consisting of glass and plastic.
Claim 4
Dependent Claim
67 words
An article according to any of claims 1-3 wherein said
perfluoroalkylalkyl silane is selected from compounds having the
general formula R n R' m SiX 4-n-m , wherein R is a perfluoroalkylalkyl
radical, R' is an alkyl or vinyl 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.
Claim 5
Dependent Claim
25 words
An article according to claim 4 wherein said perfluoroalkyl
radical is selected from the group consisting of CF 3 to C 30 F 61 .
Claim 6
Dependent Claim
27 words
An article according to claim 4 wherein said perfluoroalkyl
radical is selected from the group consisting of C 6 F 13 to C 18 F 37 .
Claim 7
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 12 F 25 .
Claim 8
Dependent Claim
19 words
An article according to any of claims 1-7 wherein said
perfluoroalkylalkyl silane is combined with a fluorinated olefin
compound.
Claim 9
Dependent Claim
34 words
An article according to claim 8 wherein said olefin compound is
selected from the group consisting of C m F 2m+1 CH=CH 2 , wherein m of
said compound is from 1 to 30.
Claim 10
Independent Claim
98 words
A method of producing a non-wetting surface on a substrate
having a glass or a glass-like surface
comprising the steps of: a. forming a first layer of a sol-gel applied oxide primer
selected from silica and silica mixed with other inorganic oxides on the
substrate by depositing on the substrate a solution which
includes a primer composition dissolved in an anhydrous
solvent without an active hydrogen wherein the primer
composition hydrolyzes/condenses at ambient temperature with
moisture to form the primer layer; and b. contacting the primer layer with a composition comprising a
perfluoroalkylalkyl silane forming a second layer.
Claim 11
Dependent Claim
32 words
The method of claim 10 wherein said primer composition includes
one or more of the compounds selected from the group consisting of
halides, alkoxides and carboxylates of aluminum, titanium,
zirconium and silicon.
Claim 12
Dependent Claim
34 words
The method of claim 11 wherein said primer composition includes
one or more of the compounds selected from the group consisting of
silicon tetrahalides, preferably chloride, silicon
tetracarboxylates, preferably acetate, partially
hydrolyzed/condensed silicon halides.
Claim 13
Dependent Claim
23 words
The method of claim 10 wherein said anhydrous solvent is selected
from the group consisting of perfluorocarbons, 1,1,2-trichlorotrifluoroethane,
trichloroethane, methylene chloride, and
hydrocarbons.
Claim 14
Independent Claim
18 words
The method of any of claims 10-13 wherein said perfluoroalkylalkyl
silane is combined with a fluorinated olefin compound.
Claim 15
Dependent Claim
31 words
The method of claim 14 wherein said fluorinated olefin compound is
selected from the group consisting of C m F 2m+1 CH=CH 2 , wherein m is
from 1 to 30.
Claim 16
Independent Claim
66 words
The method of any of claims 10-15 wherein said perfluoroalkylalkyl
silane is selected from compounds having the general formula
R n R' m SiX 4-n-m , wherein R is a perfluoroalkylalkyl radical, R' is an
alkyl or vinyl 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.
Claim 17
Dependent Claim
24 words
The method of claim 16 wherein said perfluoroalkyl radical is
selected from the group consisting of CF 3 to C 30 F 61 .
Claim 18
Dependent Claim
26 words
The method of claim 16 wherein said perfluoroalkyl radical is
selected from the group consisting of C 6 F 13 to C 18 F 37 .
Claim 19
Dependent Claim
26 words
The method of claim 16 wherein said perfluoroalkyl radical is
selected from the group consisting of C 8 F 17 to C 12 F 25 .
Claim 20
Independent Claim
43 words
The method of any of claims 10-19 wherein said
perfluoroalkylalkyl silane composition includes the
perfluoroalkylalkyl silane dissolved in a solvent, wherein said
solvent is selected from the group consisting of hexane, heptane,
methylenechloride, acetone, toluene, naphtha, fluorinated
hydrocarbon solvents and perfluorinated organic compounds.
Claim 21
Independent Claim
25 words
The method according to any of claims 10-20 wherein said substrate
is selected from the group consisting of glass and plastic having
a glass-like coating.
Claim 22
Independent Claim
21 words
The method of any of claims 10-20 further comprising the step of
curing the second layer by heating the treated surface.
Claim 23
Dependent Claim
23 words
The method of claim 22 wherein said heating step includes exposing
said substrate to 93°C-260°C (200 to 500°F) for 2 to 30 minutes.
Claim 24
Independent Claim
40 words
The method of any of claims 10-21 wherein the composition for
forming the second layer further comprises a solvent and the
second layer is formed by evaporating the solvent by drying in air
at ambient temperature without subsequent heat treatment.
Claim 25
Dependent Claim
24 words
The product obtainable by a process according to any of the claims
10-24, whereby the primer layer has a thickness of about 10 nm.
References Cited (Backward Citations)
No citation records indexed.
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