USRE30284E
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Polymeric alkoxysilanes
Assignee: Stauffer Chemical Co
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Filing: 1978-04-24
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Granted: 1980-05-27
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Expires: 1998-04-24
Abstract
Abstract Polymeric alkoxysilanes which comprise a polymer network of the average formula ##STR1## wherein each R is an independently selected hydrocarbon or hydrocarbon ether radical, each .[.R'.]..Iadd.R 1 .Iaddend. is an independently selected hydrocarbon radical, all of said radicals being free of aliphatic unsaturation, a has a value from 1 to 3; and b has a value from 0.0001 to 1.0. These polymers are made by reacting an alkoxysilane of the formula ##EQU1## with water and with an organosulfonic acid of the formula R 1 SO 3 H. These polymers are useful in zinc-rich paints and in binders for investment castings.
Inventors
- 👤 Walter L. Magee, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:36
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/28; C07; C07F; C07F7/00; C07F7/02; C07F7/025; C07F7/04; C07F7/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A polymeric alkoxysilane having the average formula ##STR7## wherein each R is an independently selected hydrocarbon radical or hydrocarbon ether radical free of aliphatic unsaturation, each R 1 is an independently selected hydrocarbon radical free of aliphatic unsaturation, a has a value from 1 to 3 and b has a value from .[.0.001.]. .Iadd.0.0001 .Iaddend.to 1.0.
Claim 2
Dependent Claim
56 words
A polymeric alkoxysilane having the average formula ##STR7## wherein each R is an independently selected hydrocarbon radical or hydrocarbon ether radical free of aliphatic unsaturation, each R 1 is an independently selected hydrocarbon radical free of aliphatic unsaturation, a has a value from 1 to 3 and b has a value from .[.0.001.]. .Iadd.0.0001 .Iaddend.to 1.0.
Claim 3
Dependent Claim
98 words
The polymeric silane of claim 1 where each R is an independently selected alkyl or alkoxyalkyl of 1 to 18 carbon atoms, aryl of 6 to 13 ring carbon atoms or alkylsubstituted aryl where the aryl has 6 to 13 ring carbon atoms and the alkyl from 1 to 5 carbon atoms, and each R 1 is an independently selected alkyl of 1 to 18 carbon atoms, aryl of 6 to 13 ring carbon atoms or alkylsubstituted aryl where the aryl has from 6 to 13 ring carbon atoms and the alkyl from 1 to 5 carbon atoms.
Claim 4
Dependent Claim
48 words
The polymeric alkoxysilane of claim 1 wherein R is lower alkyl; .[.R'.]. .Iadd.R 1 .Iaddend. is lower alkyl, phenyl or alkylphenyl where the alkyl group has 1 or 2 carbon atoms; a is an integer from 1.2 to 2.4 and b is an integer from 0.001 to 0.1.
Claim 5
Dependent Claim
10 words
The .[.polymeric.]. alkoxysilane of claim 2 having the formula ##STR8##
Claim 6
Dependent Claim
10 words
The polymeric alkoxysilane of claim 3 having the formula ##STR9##
Claim 7
Dependent Claim
10 words
The polymeric alkoxysilane of claim 3 having the formula ##STR10##
References Cited (Backward Citations)
US3872146A
Cited
US3948963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-27 | 1983-11-26 | 1984-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-27 | 1987-11-26 | 1988-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-27 | 1991-11-26 | 1992-05-27 | $7700.00 | Window Closed / Lapsed |