Patent US3624119A successfully refreshed from Google Patents.
US3624119A
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Process of making alkyltrihalogenosilanes
Assignee: Evonik Operations GmbH
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Filing: 1969-05-29
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Granted: 1971-11-30
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Expires: 1989-05-29
Abstract
Abstract Alkyltrihalogenosilanes are made by reacting a trihalogenosilane with a gaseous olefin at a temperature between 30* and 150* C. and normal pressure in the presence of a platinum metal catalyst.
Inventors
- 👤 Wilfried Rothe
- 👤 Hans Pfleger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:18
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14; B; B01; B01J; B01J19/00; B01J19/18; B01J19/185; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00101; B01J2219/00132
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
10 words
The process of claim 1 wherein said trihalogenosilane is trichlorosilane.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein said olefin is propylene or 1-butylene.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said catalyst is employed in the form of a solution or suspension thereof.
Claim 4
Dependent Claim
129 words
The process of claim 1 carried out in continuously comprising continuously introducing olefin at or near the bottom of a vertically disposed reactIon zone, continuously reacting said olefin in said zone with said halogenosilane in the presence of said platinum catalyst, continuously passing the nonreacted trihalogenosilane and olefin from or close to the top of said reaction zone to a reflux condenser and from there reintroducing said nonreacted components back into the reaction at or close to the bottom of said reaction zone and, continuously and before the reaction temperature reaches the boiling point of the alkyltrihalogensilane formed in said reaction, introducing fresh halogenosilane and olefin at or near the bottom of said reaction zone while withdrawing and recovering formed halogensilane from the top of the said reaction zone.
Claim 5
Dependent Claim
23 words
The process of claim 5 wherein said olefin is initially introduced into said reaction zone with a heated mixture of trihalogenosilane and catalyst.
Claim 6
Dependent Claim
19 words
The process of claim 5 wherein said catalyst is present in said mixture in the form of its solution.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |