US4579965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing vinyl-tri-(tertiary substituted) alkoxysilanes
Assignee: General Electric Co
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Filing: 1985-01-24
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Granted: 1986-04-01
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Expires: 2005-01-24
Abstract
Abstract A process for preparing vinyl-tri-t-oxysilanes by reacting a tri-t-alkoxysilane with an alkyne in the presence of a platinum hydrosilation catalyst at a reaction temperature greater than 150° C. forms a vinyl-tri-t-alkoxysilane in high yields and of high quality.
Inventors
- 👤 Bernard Kanner
- 👤 Jennifer M. Quirk
- 👤 Arthur P. De Monte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:03
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1876
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
101 words
Process for preparing vinyl-tri-t-alkoxysilanes by reacting a tri-t-alkoxysilane of the general formula I: HSi(OCRR'R").sub.3 [I] with an alkyne of the general formula II: R'"C.tbd.CH [II] wherein R'" is hydrogen, a saturated or unsaturated aliphatic hydrocarbon radical or an aromatic hydrocarbon radical, R, R' and R" are the same or different and each is a saturated or unsaturated aliphatic hydrocarbon radical or an aromatic hydrocarbon radical, in the presence of a platinum hydrosilation catalyst at a reaction temperature greater than 150° C. to form a vinyl-tri-t-alkoxysilane of the general formula III: R'"CH═CHSi(OCRR'R").sub.3 [III] wherein R, R' R" and R"' are as before.
Claim 2
Dependent Claim
101 words
Process for preparing vinyl-tri-t-alkoxysilanes by reacting a tri-t-alkoxysilane of the general formula I: HSi(OCRR'R").sub.3 [I] with an alkyne of the general formula II: R'"C.tbd.CH [II] wherein R'" is hydrogen, a saturated or unsaturated aliphatic hydrocarbon radical or an aromatic hydrocarbon radical, R, R' and R" are the same or different and each is a saturated or unsaturated aliphatic hydrocarbon radical or an aromatic hydrocarbon radical, in the presence of a platinum hydrosilation catalyst at a reaction temperature greater than 150° C. to form a vinyl-tri-t-alkoxysilane of the general formula III: R'"CH═CHSi(OCRR'R").sub.3 [III] wherein R, R' R" and R"' are as before.
Claim 3
Dependent Claim
12 words
The process of claim 1 in which the tri-t-alkoxysilane is a tri-t-butoxysilane.
Claim 4
Dependent Claim
11 words
The process of claim 1 in which the tri-t-alkoxysilane is tri(2-methyl-2-butoxy)silane.
Claim 5
Dependent Claim
12 words
The process of claim 1 in which the tri-t alkoxysilane is tri(3-methyl-3-pentoxy)silane.
Claim 6
Dependent Claim
11 words
The process of claim 1 in which the alkyne is acetylene.
Claim 7
Dependent Claim
12 words
The process of claim 1 in which the catalyst is chloroplatinic acid.
Claim 8
Dependent Claim
14 words
The process of claim 1 in which the catalyst is bis-(triphenylphosphine) platinum (II) chloride.
Claim 9
Dependent Claim
19 words
The process of claim 1 in which the reaction temperature is maintained from about 180° C. to 250° C.
Claim 10
Dependent Claim
17 words
The process of claim 1 in which the molar ratio of tri-t-alkoxysilane to alkyne is about 1:1.
Claim 11
Dependent Claim
27 words
The process of claim 1 in which the catalyst is employed in amounts from 1.0×10 -6 mole percent to 5.0×10 -2 mole percent based on the tri-t-alkoxysilane.
Claim 12
Dependent Claim
16 words
The process of claim 1 in which the reaction is carried out in a hydrocarbon solvent.
Claim 13
Dependent Claim
11 words
The process of claim 11 in which the solvent is triisopropylbenzene.
References Cited (Backward Citations)
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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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |