Patent US4471132A successfully refreshed from Google Patents.
US4471132A
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Method for making polyalkoxyaminosilanes
Assignee: General Electric Co
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Filing: 1983-05-31
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Granted: 1984-09-11
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Expires: 2003-05-31
Abstract
Abstract A method is provided for making polyalkoxyaminosilanes by effecting reaction between polyalkoxysilane and amine in the presence of a transition metal catalyst. The polyalkoxyaminosilanes are intermediates for room temperature vulcanizable silicone compositions.
Inventors
- 👤 John E. Hallgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1888
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
52 words
A method for making a methyldimethoxyaminosilane selected from the class consisting of methyldimethoxyaminosilane, methyldimethoxymethylaminosilane and methyldimethoxypropylaminosilane which comprises effecting reaction between a methyldimethoxysilane and an amine selected from the class consisting of ammonia, methylamine and propylamine, in the presence of an effective amount of a palladium catalyst and thereafter recovering the methyldimethoxymethylaminosilane.
Claim 2
Independent Claim
52 words
A method for making a methyldimethoxyaminosilane selected from the class consisting of methyldimethoxyaminosilane, methyldimethoxymethylaminosilane and methyldimethoxypropylaminosilane which comprises effecting reaction between a methyldimethoxysilane and an amine selected from the class consisting of ammonia, methylamine and propylamine, in the presence of an effective amount of a palladium catalyst and thereafter recovering the methyldimethoxymethylaminosilane.
Claim 3
Dependent Claim
49 words
A method in accordance with claim 1 which comprises passing a mixture of the methyldimethoxysilane and the amine to a fixed bed of palladium catalyst at a pressure of from about 1-10 atmospheres and at a temperature of about 30° to about 150° C. and thereafter recovering the methyldimethoxyaminosilane.
Claim 4
Dependent Claim
12 words
A method in accordance with claim 1, where the polyalkoxysilane is trimethoxysilane.
Claim 5
Dependent Claim
12 words
A method in accordance with claim 1, where the polyalkoxysilane is methyldimethoxysilane.
References Cited (Backward Citations)
US4115427A
Cited
SU735595A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |