US4254271A
Expired / Lapsed
US
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Addition of dialkylhalogeno-hydridosilanes to unsaturated hydrocarbon compounds
Assignee: ULRICH FINKE SCHOLLBRONNER
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Filing: 1979-01-12
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Granted: 1981-03-03
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Expires: 1999-01-12
Abstract
Abstract In the addition of an unsaturated compound into a silane of the formula R.sub.1 R.sub.2 SiXH wherein X is Cl or Br, and R 1 and R 2 each independently is an alkyl, aryl or aralkyl radical with up to 20 C atoms, or an alkenyl or alkinyl radical with up to 12 C atoms, the improvement which comprises effecting the addition reaction in the presence of at least one of aluminum chloride, aluminum bromide, aluminum oxychloride and aluminum oxybromide.
Inventors
- 👤 Ulrich Finke
- 👤 Hans-Heinrich Moretto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:34
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
In the addition of an unsaturated compound onto a silane of the formula R.sub.1 R.sub.2 SiXH wherein X is Cl or Br, and R 1 and R 2 each independently is an alkyl, aryl or aralkyl radical with up to 20 C atoms, or an alkenyl or alkinyl radical with up to 12 C atoms, the improvement which comprises effecting the addition reaction in the presence of at least one of aluminum chloride, aluminum bromide, aluminum oxychloride and aluminum oxybromide.
Claim 2
Dependent Claim
80 words
In the addition of an unsaturated compound onto a silane of the formula R.sub.1 R.sub.2 SiXH wherein X is Cl or Br, and R 1 and R 2 each independently is an alkyl, aryl or aralkyl radical with up to 20 C atoms, or an alkenyl or alkinyl radical with up to 12 C atoms, the improvement which comprises effecting the addition reaction in the presence of at least one of aluminum chloride, aluminum bromide, aluminum oxychloride and aluminum oxybromide.
Claim 3
Dependent Claim
11 words
A process according to claim 1, wherein the silane is dimethylchlorosilane.
Claim 4
Dependent Claim
18 words
A process according to claim 1, wherein the unsaturated compound is at least one of 2-methylbut-1-ene and 2-methylbut-2-ene.
Claim 5
Dependent Claim
39 words
A process according to claim 3, wherein the silane is dimethylchlorosilane, the temperature is between about -30° and 60° C., and the aluminum compound is aluminum chloride present in about 0.01 to 5% by weight of the reaction mixture.
Claim 6
Dependent Claim
1 words
1,2-dimethylpropyl-1-dimethylchlorosilane.
Claim 7
Dependent Claim
1 words
1,2-dimethylpropyl-1-dimethylchlorosilane.
References Cited (Backward Citations)
US2660597A
Cited
US2537763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |