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US4377706A
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Polyalkoxysilylenolethers
Assignee: General Electric Co
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Filing: 1981-06-26
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Granted: 1983-03-22
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Expires: 2001-06-26
Abstract
Abstract Polyalkoxysilylenolethers, for example, methyldimethoxyisopropenoxysilane, are provided and a method for making such silanes. The dialkoxysilylenolethers can be used as end-capping silanes for making noncorrosive RTV compositions.
Inventors
- 👤 John E. Hallgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:07
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
1 words
Methyldimethoxyisopropenoxysilane.
Claim 2
Dependent Claim
1 words
Methyldimethoxyisopropenoxysilane.
Claim 3
Independent Claim
105 words
A method for making polyalkoxysilylenolethers which comprises, (1) heating a mixture of a polyalkoxysilane of the formula, ##STR6## and a ketone selected from the class consisting of acetone, methylethylketone, diethylketone, acetophenone, cyclohexanone, benzophenone and 2-pentaneone in the presence of an effective amount of a transition metal catalyst and (2) recovering the resulting polyalkoxysilylenolether from the mixture of (1), where R is a C.sub.(1-13) substituted or unsubstituted monovalent hydrocarbon radicals, R 1 is a C.sub.(1-8) alkyl radical, a is an integer equal to 1 or 2, b is an integer equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
Claim 4
Independent Claim
105 words
A method for making polyalkoxysilylenolethers which comprises, (1) heating a mixture of a polyalkoxysilane of the formula, ##STR6## and a ketone selected from the class consisting of acetone, methylethylketone, diethylketone, acetophenone, cyclohexanone, benzophenone and 2-pentaneone in the presence of an effective amount of a transition metal catalyst and (2) recovering the resulting polyalkoxysilylenolether from the mixture of (1), where R is a C.sub.(1-13) substituted or unsubstituted monovalent hydrocarbon radicals, R 1 is a C.sub.(1-8) alkyl radical, a is an integer equal to 1 or 2, b is an integer equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
Claim 5
Independent Claim
157 words
A method for making polyalkoxysilylenolether which comprises, (1) effecting reaction at a temperature in the range of from 20° C. to 250° C. of a polyhalosilane having the formula, ##STR7## and an alkanol having the formula, R.sup.1 OH to produce a polyalkoxysilane having the formula, ##STR8## (2) effecting reaction between the polyalkoxysilane of (1) and a ketone selected from the class consisting of acetone, methylethylketone, diethylketone, acetophenone, cyclohexanone, benzophenone and 2-pentaneone at a temperature in the range of between 20° C. to 250° C. in the presence of an effective amount of a transition metal catalyst and (3) recovering the polyalkoxysilylenolether from the mixture of (2), where X is halogen, where R is a C.sub.(1-13) substituted or unsubstituted monovalent hydrocarbon radicals, R 1 is a C.sub.(1-8) alkyl radical, a is an integer equal to 1 or 2, b is an integer equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
Claim 6
Independent Claim
157 words
A method for making polyalkoxysilylenolether which comprises, (1) effecting reaction at a temperature in the range of from 20° C. to 250° C. of a polyhalosilane having the formula, ##STR7## and an alkanol having the formula, R.sup.1 OH to produce a polyalkoxysilane having the formula, ##STR8## (2) effecting reaction between the polyalkoxysilane of (1) and a ketone selected from the class consisting of acetone, methylethylketone, diethylketone, acetophenone, cyclohexanone, benzophenone and 2-pentaneone at a temperature in the range of between 20° C. to 250° C. in the presence of an effective amount of a transition metal catalyst and (3) recovering the polyalkoxysilylenolether from the mixture of (2), where X is halogen, where R is a C.sub.(1-13) substituted or unsubstituted monovalent hydrocarbon radicals, R 1 is a C.sub.(1-8) alkyl radical, a is an integer equal to 1 or 2, b is an integer equal to 0 or 1, and the sum of a+b is equal to 1 or 2.
Claim 7
Dependent Claim
17 words
A method in accordance with claim 2, where the transition metal catalyst is a cobalt carbonylpyridine catalyst.
Claim 8
Dependent Claim
20 words
A method in accordance with claim 2, where the transition metal catalyst is a nickel metal catalyst, promoted with thiophenol.
Claim 9
Dependent Claim
15 words
A method in accordance with claim 2, where the transition metal catalyst is nickel bis(thiophenoxide).
Claim 10
Dependent Claim
12 words
A method in accordance with claim 2, where the polyalkoxysilane is methyldimethoxysilane.
Claim 11
Dependent Claim
12 words
A method in accordance with claim 2, where the ketone is acetone.
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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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |