Patent US5173583A successfully refreshed from Google Patents.
Patent US4753827A successfully refreshed from Google Patents.
US4753827A
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US
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Abrasion-resistant organosiloxane/metal oxide coating
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 An organoalkoxysilane/metal oxide 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 a low molecular weight alkyl radical, and x is at least 1 and less than 4, is partially hydrolyzed in organic solution and reacted with a titanium or zirconium alkoxide of the general formula M(OR") 4 wherein M is titanium or zirconium and R" is a lower alkyl radical. The composition is hydrolyzed, dried and condensed to form an organosiloxane/metal oxide abrasion-resistant coating on a substrate.
Inventors
- 👤 Bulent E. Yoldas
- 👤 Chia-Cheng Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:50
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/14; C09D183/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
87 words
A composition of matter comprising the condensation polymerization reaction product of: a. an organoalkoxysilane or mixture of organoalkoxysilanes 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, and wherein said organoalkoxysilane or mixture of organoalkoxysilanes is partially hydrolyzed; b. an alkoxide of a metal selected from the group consisting of titanium and zirconium; and c. sufficient water to hydrolyze the reaction product of a. and b.
Claim 2
Dependent Claim
87 words
A composition of matter comprising the condensation polymerization reaction product of: a. an organoalkoxysilane or mixture of organoalkoxysilanes 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, and wherein said organoalkoxysilane or mixture of organoalkoxysilanes is partially hydrolyzed; b. an alkoxide of a metal selected from the group consisting of titanium and zirconium; and c. sufficient water to hydrolyze the reaction product of a. and b.
Claim 3
Dependent Claim
23 words
A composition according to claim 1, wherein R is selected from the group consisting of lower alkyl, vinyl, methoxyethyl, phenyl, γ-glycidoxypropyl and γ-methacryloxypropyl.
Claim 4
Dependent Claim
19 words
A composition to claim 1, wherein R+ is selected from the group consisting of methyl, ethyl, propyl and butyl.
Claim 5
Dependent Claim
14 words
A composition according to claim 3, wherein R is methyl and R' is ethyl.
Claim 6
Dependent Claim
11 words
A composition according to claim 4, wherein x is 1. l
Claim 7
Dependent Claim
24 words
A composition according to claim 1, wherein said alkoxide has the general formula Zr(OR") 4 wherein R" is a low molecular weight alkyl radical.
Claim 8
Dependent Claim
13 words
A composition according to claim 6, wherein the zirconium alkoxide is zirconium isopropoxide.
Claim 9
Dependent Claim
18 words
A composition according to claim 1, wherein said organoalkoxysilane comprises an organoalkoxysilane which comprises an epoxy-containing alkyl radical.
Claim 10
Dependent Claim
19 words
A composition according to claim 1, wherein said mixture of organoalkoxysilanes comprises an epoxyalkoxysilane in combination with an alkylalkoxysilane.
Claim 11
Dependent Claim
24 words
A composition according to claim 9, wherein said mixture of organoalkoxysilanes comprises γ-glycidoxypropyl trimethoxysilane and methyl triethoxysilane and said metal alkoxide is zirconium isopropoxide.
Claim 12
Independent Claim
89 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, R' is a low molecular weight alkyl radical, and x is at least 1 and less than 4; b. adding to said partially hydrolzed organoalkoxysilane a metal alkoxide selected from the group consisting of titanium alkoxides and zirconium alkoxides; c. reacting said metal alkoxide with said partially hydrolyzed organoalkoxysilane; and d. adding additional water to hydrolyze the composition.
Claim 13
Independent Claim
89 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, R' is a low molecular weight alkyl radical, and x is at least 1 and less than 4; b. adding to said partially hydrolzed organoalkoxysilane a metal alkoxide selected from the group consisting of titanium alkoxides and zirconium alkoxides; c. reacting said metal alkoxide with said partially hydrolyzed organoalkoxysilane; and d. adding additional water to hydrolyze 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 2-propanol.
Claim 16
Dependent Claim
19 words
A method according to claim 12, wherein the step of partially hydrolyzing said organoalkoxysilane is carried out in ethanol.
Claim 17
Dependent Claim
13 words
A method according to claim 12, wherein said metal alkoxide is zirconium isopropoxide.
Claim 18
Dependent Claim
19 words
A method according to claim 11, further comprising the step of drying said composition to remove water and alcohol.
Claim 19
Dependent Claim
23 words
A method according to claim 16, further comprising the step of curing said composition to form a condensation polymer network of silicon-oxygen-metal bonds.
Claim 20
Dependent Claim
39 words
A method according to claim 17 further comprising the step of applying said composition to the surface of a substrate, wherein said drying and curing steps are carried out on said substrate thereby forming a coating on said substrate.
Claim 21
Dependent Claim
16 words
A method according to claim 18, wherein said curing step is carried out at elevated temperature.
Claim 22
Dependent Claim
22 words
A method according to claim 19, wherein said curing step is carried out at a temperature between 80° C. and 150° C.
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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 |