US3692812A
Expired / Lapsed
US
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Method of producing alkoxy-substituted mercaptoalkyl silanes
Assignee: General Electric Co
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Filing: 1971-04-21
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Granted: 1972-09-19
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Expires: 1991-04-21
Abstract
Abstract Alkoxy-substituted mercaptoalkyl silanes are prepared by reacting an olefinically substituted silane with a thioacid and treating the reaction product with an alcohol so as to form or maintain an alkoxy substituent, while forming a mercaptoalkyl substituent of the original olefinic portion. The process is also applicable to the production of polymeric organosilicon materials with mercaptoalkyl substituents.
Inventors
- 👤 Abe Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:20
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/06; C07F15/065; C07F13/00; C07F13/005; C07F15/02; C07F15/025; C07F15/04; C07F15/045; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/10; C07F7/18; C07F7/1804; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/392
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
25 words
The process of claim 1 wherein the reaction of the thioacid with the olefinically substituted silane is carried out in the presence of ultraviolet light.
Claim 2
Dependent Claim
27 words
The process of claim 1 wherein the reaction product of the olefinically substituted silane and the thioacid is treated with a base, in conjunction with the alkanol.
Claim 3
Dependent Claim
16 words
The process of claim 3 wherein the base is an alkali metal salt of the alkanol.
Claim 4
Dependent Claim
25 words
The process of producing wherein omega-dimethylethoxysilyloct-1-ene is reacted with thioacetic acid and the reaction product is reacted with ethanol in the presence of sodium ethoxide.
Claim 5
Independent Claim
27 words
The method of producing (C2H5O)3Si(CH2)2SH wherein vinyl triethoxysilane is reacted with thioacetic acid and the reaction product is reacted with ethanol in the presence of sodium ethoxide.
Claim 6
Dependent Claim
121 words
A process for forming a product having the formula, comprising reacting an olefinically substituted polysiloxane of the formula, with a thioacid of the formula, and reacting the resulting thioacid with an alkanol, where R is selected from the class consisting of alkyl, aryl, alkenyl and aralkyl substituents, R'''' is selected from the class consisting of monovalent saturated hydrocarbon radicals and hydrogen, where R'''' may have up to 10 carbon atoms, R'''''' is selected from the class consisting of alkyl, aryl, aralkyl and alkenyl radicals of from one to 15 carbon atoms, m varies from 0 to 20, a varies from 1.08 to 2.5, b varies from 0.009 to 0.97 and the sum of a plus b varies from 2.01 to 3.5.
Claim 7
Dependent Claim
25 words
The process of claim 7 wherein the reaction of the thioacid with the olefinically substituted polysiloxane is carried out in the presence of ultraviolet light.
Claim 8
Dependent Claim
27 words
The process of claim 7 wherein the reaction product of the olefinically substituted polysiloxane and the thioacid is treated with a base in conjunction with the alkanol.
Claim 9
Dependent Claim
16 words
The process of claim 9 wherein the base is an alkali metal salt of the alkanol.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |