US4727173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing trialkoxysilanes from the reaction of silicon metal and alcohol
Assignee: General Electric Co
•
Filing: 1987-03-31
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Granted: 1988-02-23
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Expires: 2007-03-31
Abstract
Abstract A process for producing trialkoxysilane by the direct reaction of silicon metal with an alcohol, ROH, in the presence of a catalytically effective amount of copper (II) hydroxide, wherein R is an alkyl group containing from 1 to 6 carbon atoms.
Inventors
- 👤 Frank D. Mendicino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:16
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/025
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
78 words
A process for producing trialkoxysilane of the formula HSi(OR) 3 wherein R is an alkyl group containing from 1 to 6 carbon atoms which comprises: (a) forming a reaction mixture comprising an alcohol of the formula ROH wherein R is as defined above, an inert solvent, silicon metal, and a catalytically effective amount of copper (II) hydroxide; and (b) reacting said alcohol with said silicon metal in the presence of said copper (II) hydroxide to produce the trialkoxysilane.
Claim 2
Dependent Claim
78 words
A process for producing trialkoxysilane of the formula HSi(OR) 3 wherein R is an alkyl group containing from 1 to 6 carbon atoms which comprises: (a) forming a reaction mixture comprising an alcohol of the formula ROH wherein R is as defined above, an inert solvent, silicon metal, and a catalytically effective amount of copper (II) hydroxide; and (b) reacting said alcohol with said silicon metal in the presence of said copper (II) hydroxide to produce the trialkoxysilane.
Claim 3
Dependent Claim
18 words
The process of claim 1, wherein R is an alkyl group containing from 1 to 3 carbon atoms.
Claim 4
Dependent Claim
9 words
The process of claim 2 wherein R is methyl.
Claim 5
Dependent Claim
9 words
The process of claim 2 wherein R is ethyl.
Claim 6
Dependent Claim
31 words
The process of claim 1 wherein the amount of copper (II) hydroxide catalyst is from about 0.01 to about 5 parts by weight per 100 parts by weight of silicon metal.
Claim 7
Dependent Claim
30 words
The process of claim 1 wherein the amount of copper (II) hydroxide is from about 0.1 to about 2.6 parts by weight per 100 parts by weight of silicon metal.
Claim 8
Dependent Claim
30 words
The process of claim 1 wherein the amount of copper (II) hydroxide is from about 0.1 to about 0.7 parts by weight per 100 parts by weight of silicon metal.
Claim 9
Dependent Claim
14 words
The process of claim 1 wherein the reaction mixture is agitated during the reaction.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein the temperature is maintained above about 150° C. during the reaction.
Claim 11
Dependent Claim
21 words
The process of claim 9, wherein the temperature is maintained in the range of about 200° C. to about 240° C.
Claim 12
Dependent Claim
22 words
The process of claim 1 wherein additional amounts of silicon metal are subsequently fed to the reaction to replace silicon metal consumed.
Claim 13
Dependent Claim
52 words
A process for producing trimethoxysilane, HSi(OCH 3 ) 3 , which comprises: (a) forming a reaction mixture comprising methanol, an inert solvent, silicon metal and a catalytically effective amount of copper(II) hydroxide; and (b) reacting said methanol with said silicon metal in the presence of the copper (II) hydroxide to produce trimethoxysilane.
Claim 14
Dependent Claim
52 words
A process for producing trimethoxysilane, HSi(OCH 3 ) 3 , which comprises: (a) forming a reaction mixture comprising methanol, an inert solvent, silicon metal and a catalytically effective amount of copper(II) hydroxide; and (b) reacting said methanol with said silicon metal in the presence of the copper (II) hydroxide to produce trimethoxysilane.
Claim 15
Dependent Claim
31 words
The process of claim 12 wherein the amount of copper (II) hydroxide catalyst is from about 0.01 to about 5 parts by weight per 100 parts by weight of silicon metal.
Claim 16
Dependent Claim
30 words
The process of claim 13 wherein the amount of copper (II) hydroxide is from about 0.1 to about 2.6 parts by weight per 100 parts by weight of silicon metal.
Claim 17
Dependent Claim
30 words
The process of claim 14 wherein the amount of copper (II) hydroxide is from about 0.1 to about 0.7 parts by weight per 100 parts by weight of silicon metal.
Claim 18
Dependent Claim
14 words
The process of claim 12 wherein the reaction mixture is agitated during step (b).
Claim 19
Dependent Claim
21 words
The process of claim 12 wherein the temperature of the reaction zone is maintained above about 150° C. during step (b).
Claim 20
Dependent Claim
25 words
The process of claim 17 wherein the temperature of the reaction zone is maintained in the range of about 200° C. to about 240° C.
Claim 21
Dependent Claim
25 words
The process of claim 18, wherein additional amounts of silicon metal are added to the reaction zone to replace silicon metal consumed by the reaction.
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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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |