US4754012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-component sol-gel protective coating composition
Assignee: PPG Industries Ohio Inc
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Filing: 1986-10-03
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Granted: 1988-06-28
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Expires: 2006-10-03
Abstract
Abstract A multi-component organoalkoxysilane/metal alkoxide sol-gel composition and method for its production are disclosed whereby an organoalkoxysilane of the general formula R.sub.x Si(OR').sub.4-x wherein R is an organic radical, R' is low molecular weight alkyl radical, and x is at least 1 and less than 4, is partially hydrolyzed, reacted with a mixture of metal alkoxides, and the resulting composition is further hydrolyzed and condensed to form an inorganic oxide network. The composition is dried and cured to form an abrasion-resistant coating on a substrate having improved properties in comparison with single metal alkoxide compositions.
Inventors
- 👤 Bulent E. Yoldas
- 👤 Chia-Cheng Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:50
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/14; C09D183/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
90 words
A composition of matter comprising the condensation polymerization reaction product of: a. an organoalkoxysilane of the general formula R.sub.x Si(OR').sub.4-x wherein R is an organic radical, R' is a low molecular weight alkyl radical, and x is at least one and less than 4; and b. at least two metal alkoxides of the general formula M(OR") z wherein M is a metal which hydrolyzable alkoxides, z is the valence of M, and R" is a low molecular weight alkyl radical, and said metal alkoxides comprises at least two different metals.
Claim 2
Dependent Claim
90 words
A composition of matter comprising the condensation polymerization reaction product of: a. an organoalkoxysilane of the general formula R.sub.x Si(OR').sub.4-x wherein R is an organic radical, R' is a low molecular weight alkyl radical, and x is at least one and less than 4; and b. at least two metal alkoxides of the general formula M(OR") z wherein M is a metal which hydrolyzable alkoxides, z is the valence of M, and R" is a low molecular weight alkyl radical, and said metal alkoxides comprises at least two different metals.
Claim 3
Dependent Claim
22 words
A composition according to claim 1, wherein R is selected from the group consisting of alkyl, vinyl, methoxyethyl, phenyl, γ-glycidoxypropyl and γ-methacryloxypropyl.
Claim 4
Dependent Claim
23 words
A composition according to claim 1, wherein R' and R" are individually selected from the group consisting of methyl, ethyl, propyl and butyl.
Claim 5
Dependent Claim
25 words
A composition accoridng to claim 1, wherein each said metal is selected from the group consisting of aluminum, titanium, zirconium, tantalum, hafnium and mixtures thereof.
Claim 6
Dependent Claim
15 words
A composition according to claim 1, wherein one of said metal alkoxides is zirconium isopropoxide.
Claim 7
Dependent Claim
16 words
A composition according to claim 1, wherein one of said metal alkoxides is a titanium alkoxide.
Claim 8
Dependent Claim
18 words
A composition according to claim 6, wherein said titanium alkoxide comprises Ti(OC 2 H 5 ) 4 .
Claim 9
Dependent Claim
16 words
A composition according to claim 1, wherein one of said metal alkoxides is an aluminum alkoxide.
Claim 10
Dependent Claim
13 words
A composition according to claim 8, wherein said aluminum alkoxide comprises aluminum tributoxide.
Claim 11
Dependent Claim
22 words
A composition according to claim 1, wherein one of said metal alkoxides is a zirconium alkoxide and one is a titanium alkoxide.
Claim 12
Independent Claim
86 words
A method of making an organoalkoxysilane-metal oxide composition comprising the steps of: a. partially hydrolyzing in organic solution an organoalkoxysilane of the general formula R.sub.x Si(OR').sub.4-x wherein R is an organic radical, R" is a low molecular weight alkyl radical, and x is at least 1 and less than 4; b. adding to said partially hydrolyzed organoalkoxysilane at least two hydrolyzable metal alkoxides comprising at least two metals; c. reacting said metal alkoxides with said partially hydrolyzed organoalkoxysilane; and d. further hydrolyzing and condensing the composition.
Claim 13
Independent Claim
86 words
A method of making an organoalkoxysilane-metal oxide composition comprising the steps of: a. partially hydrolyzing in organic solution an organoalkoxysilane of the general formula R.sub.x Si(OR').sub.4-x wherein R is an organic radical, R" is a low molecular weight alkyl radical, and x is at least 1 and less than 4; b. adding to said partially hydrolyzed organoalkoxysilane at least two hydrolyzable metal alkoxides comprising at least two metals; c. reacting said metal alkoxides with said partially hydrolyzed organoalkoxysilane; and d. further hydrolyzing and condensing the composition.
Claim 14
Dependent Claim
19 words
A method according to claim 11, wherein the step of partially hydrolyzing said organoalkoxysilane is carried out in alcohol.
Claim 15
Dependent Claim
19 words
A method according to claim 12, wherein the step of partially hydrolyzing said organoalkoxysilane is carried out in ethanol.
Claim 16
Dependent Claim
16 words
A method according to claim 11, wherein one of said metal alkoxides is a zirconium alkoxide.
Claim 17
Dependent Claim
18 words
A method according to claim 14, wherein said zirconium alkoxide comprises Zr(OC 3 H 7 ) 4 .
Claim 18
Dependent Claim
16 words
A method according to claim 11, wherein one of said metal alkoxides is a titanium alkoxide.
Claim 19
Dependent Claim
13 words
A method according to claim 16, wherein said titanium alkoxide comprises tetraethyl titanate.
Claim 20
Dependent Claim
16 words
A method according to claim 11, wherein one of said metal alkoxides is an aluminum alkoxide.
Claim 21
Dependent Claim
13 words
A method according to claim 18, wherein said aluminum alkoxide comprises aluminum tributoxide.
Claim 22
Dependent Claim
21 words
A method according to claim 11, wherein said metal alkoxides comprise a zirconium alkoxide, a titanium alkoxide and an aluminum alkoxide.
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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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |