US3607900A
Expired / Lapsed
US
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Transhalogenation of organosilicon halides with silicon tetrafluoride
Assignee: Wacker Chemical Corp
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Filing: 1969-09-25
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Granted: 1971-09-21
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Expires: 1989-09-25
Abstract
Abstract An aqueous solution of tetrahydrofuran is saturated with silicon tetrafluoride and the resulting product, after removal of excess tetrahydrofuran, is applied as a transhalogenation reagent. The silicon tetrafluoride-tetrahydrofuran complex transhalogenation reagent is caused to react with diorganosilicon monohalides of the formula (R)2 HSiX wherein R represents hydrocarbyl groups and X represents chlorine, bromine and iodine forming the fluoride analogue thereof.
Inventors
- 👤 George Morris Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:55
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/121; C07F7/123
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
Method according to claim 1 wherein both R''s are aryl radicals.
Claim 2
Dependent Claim
16 words
Method according to claim 1 wherein one R is alicyclic and the other R is bicyclic.
Claim 3
Dependent Claim
11 words
Method according to claim 1 wherein cyclohexyl-1-naphthylchlorosilane is converted to cyclohexyl-1-naphthylfluorosilane.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |