US5115023A
Expired / Lapsed
US
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Siloxane organic hybrid polymers
Assignee: PPG Industries Ohio Inc
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Filing: 1990-11-05
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Granted: 1992-05-19
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Expires: 2010-11-05
Abstract
Abstract Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane in the presence of organic film-forming polymers are disclosed.
Inventors
- 👤 John D. Basil
- 👤 Chia-Cheng Lin
- 👤 Robert M. Hunia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:14
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C09; C09D; C09D183/00; C09D183/04; C08J2483/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
A siloxane organic hybrid polymer reaction product of a mixture of reactants consisting essentially of: a. an organoalkoxysilane or mixture of organoalkoxysilanes of the general formula R x Si(OR') 4-x wherein R is an organic radical selected from the group consisting of methyl and methacryloxypropyl groups, R' is a low molecular weight alkyl group selected from the group consisting of methyl, ethyl, propyl and butyl, and x is at least one and less than 4; and b. polyvinylpyrrolidone.
Claim 2
Dependent Claim
78 words
A siloxane organic hybrid polymer reaction product of a mixture of reactants consisting essentially of: a. an organoalkoxysilane or mixture of organoalkoxysilanes of the general formula R x Si(OR') 4-x wherein R is an organic radical selected from the group consisting of methyl and methacryloxypropyl groups, R' is a low molecular weight alkyl group selected from the group consisting of methyl, ethyl, propyl and butyl, and x is at least one and less than 4; and b. polyvinylpyrrolidone.
Claim 3
Dependent Claim
19 words
An organic-inorganic hybrid polymer according to claim 1, wherein the weight ratio of silane to polyvinylpyrrolidone is about 30.
Claim 4
Independent Claim
95 words
A method of making a siloxane organic hybrid polymer consisting essentially of the steps of: a hydrolyzing an organoalkoxysilane or mixture of organoalkoxysilanes of the general formula R x Si(OR') 4-x wherein R is an organic radical selected from the group consisting of methyl and methyacryloxypropyl groups, R' is a low molecular weight alkyl group selected from the group consisting of methyl, ethyl, propyl and butyl, and x is at least one and less than 4; and b. condensing and polymerizing said organoalkoxysilane in a solution of polyvinylpyrrolidone to form a siloxane organic hybrid polymer.
Claim 5
Independent Claim
95 words
A method of making a siloxane organic hybrid polymer consisting essentially of the steps of: a hydrolyzing an organoalkoxysilane or mixture of organoalkoxysilanes of the general formula R x Si(OR') 4-x wherein R is an organic radical selected from the group consisting of methyl and methyacryloxypropyl groups, R' is a low molecular weight alkyl group selected from the group consisting of methyl, ethyl, propyl and butyl, and x is at least one and less than 4; and b. condensing and polymerizing said organoalkoxysilane in a solution of polyvinylpyrrolidone to form a siloxane organic hybrid polymer.
Claim 6
Dependent Claim
12 words
A method according to claim 3, wherein said organoalkoxysilane is methyl trimethoxysilane.
Claim 7
Dependent Claim
16 words
A method according to claim 3, wherein said organoalkoxysilane comprises a mixture of methacryloxypropyltriethoxysilane and alkylalkoxysilane.
Claim 8
Dependent Claim
12 words
A method according to claim 5, wherein said alkylalkoxysilane is methyl trimethoxysilane.
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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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |