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US3965136A
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Alkoxysilane cluster compounds and their preparation
Assignee: Olin Corp
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Filing: 1975-09-24
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Granted: 1976-06-22
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Expires: 1995-09-24
Abstract
Abstract Novel alkoxysilane cluster compounds are described having the formula RSi[Osi(OR')3]3 wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The preparation of these novel alkoxysilane cluster compounds is also described.
Inventors
- 👤 Karl O. Knollmueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:13
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07F; C07F7/00; C07F7/02; C07F7/025; C07F7/08; C07F7/18; C07F7/1804; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/10; C10M2207/18; C10M2207/20; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
50 words
A compound of the formula: ##EQU8## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl, and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms.
Claim 2
Dependent Claim
50 words
A compound of the formula: ##EQU8## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl, and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms.
Claim 3
Dependent Claim
52 words
The compound of claim 1 wherein R is hydrogen, an alkyl or alkenyl having about 1 to about 18 carbon atoms or an aryl or aralkyl having about 6 to about 24 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 4
Dependent Claim
25 words
The compound of claim 2 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 5
Dependent Claim
50 words
The compound of claim 1 wherein R is hydrogen, an alkyl having about 1 to about 8 carbon atoms or an aryl or aralkyl having about 6 to about 14 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 6
Dependent Claim
25 words
The compound of claim 4 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
Claim 7
Dependent Claim
25 words
The compound of claim 1 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 8
Dependent Claim
25 words
The compound of claim 6 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
Claim 9
Dependent Claim
109 words
A method of preparing the compound of claim 1 comprising: reacting a trihalosilane of the formula: R--SiX.sub.3 wherein R is defined in claim 1 above and each X is a halogen selected from F, Cl, Br and I; with about 2.5 to about 10 moles of a trialkoxysilanol per mole of trihalosilane, said trialkoxysilanol having the formula: HOSi(OR').sub.3 wherein R' is defined in claim 1 above; in the presence of about 2.5 to about 10 moles of a hydrogen halide acceptor base compound, per mole of trihalosilane; said reaction being carried out at about -30°C to about the reflux temperature of the lowest boiling constituent in the reaction mixture.
Claim 10
Dependent Claim
14 words
The method of claim 8 wherein X is selected from Cl, Br and I.
Claim 11
Dependent Claim
72 words
The method of claim 8 wherein R is hydrogen, an alkyl or alkenyl having about 1 to about 18 carbon atoms or an aryl or aralkyl having about 6 to about 24 carbon atoms and wherein each R' is independently selected from the same group as R with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 12
Dependent Claim
50 words
The method of claim 10 wherein R is hydrogen, an alkyl having about 1 to about 8 carbon atoms or an aryl or aralkyl having about 6 to about 14 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 13
Dependent Claim
30 words
The method of claim 10 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms and wherein X is Cl.
Claim 14
Dependent Claim
21 words
The method of claim 10 wherein about --3 to about 6 moles of the trialkoxysilanol is used per mole of trihalosilane.
Claim 15
Dependent Claim
25 words
The method of claim 13 wherein about 3 to about 6 moles of the hydrogen halide acceptor base compound is used per mole of trihalosilane.
Claim 16
Dependent Claim
15 words
The method of claim 14 wherein said reaction is carried out at 0°C to 100°C.
Claim 17
Dependent Claim
106 words
A method of preparing the compound of claim 1 comprising: reacting an alkoxysilanol having the formula: ##EQU9## wherein R and R' are defined in claim 1 above, with about 1 to about 20 moles of a halosilane per mole of alkoxysilanol, the halosilane having the formula: XSi(OR').sub.3 wherein R' is defined above and each X is selected from F, Cl, Br and I, in the presence of about 2.5 to about 10 moles of a hydrogen halide acceptor base compound per mole of alkoxysilanol, said reaction being carried out at about -30°C to about the reflux temperature of the lowest boiling constituent in the reaction mixture.
Claim 18
Dependent Claim
14 words
The method of claim 16 wherein X is selected from Cl, Br and I.
Claim 19
Dependent Claim
72 words
The method of claim 16 wherein R is hydrogen, an alkyl or aralkenyl having about 1 to about 18 carbon atoms or an aryl or aralkyl having about 6 to about 24 carbon atoms and wherein each R' is independently selected from the same group as R with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having about 3 to about 24 carbon atoms.
Claim 20
Dependent Claim
50 words
The method of claim 18 wherein R is hydrogen, an alkyl having about 1 to about 8 carbon atoms or an aryl or aralkyl having about 6 to about 12 carbon atoms and wherein each R' is independently selected from the same group as R, subject to the above proviso.
Claim 21
Dependent Claim
25 words
The method of claim 18 wherein a majority of the R' radicals are sterically hindered alkyl groups having about 4 to about 12 carbon atoms.
Claim 22
Dependent Claim
21 words
The method of claim 18 wherein about 1 to about 6 moles of the halosilane is used per mole of alkoxysilanol.
Claim 23
Dependent Claim
25 words
The method of claim 21 wherein about 3 to about 6 moles of the hydrogen halide acceptor base compound is used per mole of trialkoxyhalosilane.
Claim 24
Dependent Claim
15 words
The method of claim 22 wherein said reaction is carried out at 0°C to 100°C.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |