US3856842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing silylthioethers
Assignee: Sagami Chemical Research Institute
•
Filing: 1973-08-23
•
Granted: 1974-12-24
•
Expires: 1993-08-23
Abstract
Abstract Silylthioethers are produced by reacting an organosilicon hydride with a mercaptan in the presence of tris(triphenylphosphine) chlororhodium.
Inventors
- 👤 Y Nagai
- 👤 I Ojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:46
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1896; C07F7/0896; C07F7/0898; C07F7/10; C07F7/1804; C07F7/1872; C07F7/188
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
62 words
A PROCESS FOR PRODUCING A SILYTHIOETHER WHICH COMPRISES REACTING AN ORGANOSILICON HYDRIDE SELECTED FROM THE GROUP CONSISTING OF TRIALKYL MONOHYDROSILANES, TRIARYL MONOHYDROSILANES, ARYLDIALKYL MONOHYDROSILANES, DIARYLALKYL MONOHYDROSILANES, DIARYLALKYL MONOHYDROSILANES, DIARYL DIHYDROSILANES, ARYLALKYL DIHYDROSILANES, DIALKYL DIHYDROSILANES, ARYL TRIHYDROSILANES, AND ALKYL TRIHYDROSILANES WITH A MERCAPTAN SELECTED FROM THE GROUP CONSISTING OF ALKYL MERCAPTANTS, ARALKYL MERCAPTANS AND ARYL MERCAPTANS IN THE PRESENCE OF TRIS (TRIPHENYLPHOSPHINE) HALOROHODIUM.
Claim 2
Dependent Claim
62 words
A PROCESS FOR PRODUCING A SILYTHIOETHER WHICH COMPRISES REACTING AN ORGANOSILICON HYDRIDE SELECTED FROM THE GROUP CONSISTING OF TRIALKYL MONOHYDROSILANES, TRIARYL MONOHYDROSILANES, ARYLDIALKYL MONOHYDROSILANES, DIARYLALKYL MONOHYDROSILANES, DIARYLALKYL MONOHYDROSILANES, DIARYL DIHYDROSILANES, ARYLALKYL DIHYDROSILANES, DIALKYL DIHYDROSILANES, ARYL TRIHYDROSILANES, AND ALKYL TRIHYDROSILANES WITH A MERCAPTAN SELECTED FROM THE GROUP CONSISTING OF ALKYL MERCAPTANTS, ARALKYL MERCAPTANS AND ARYL MERCAPTANS IN THE PRESENCE OF TRIS (TRIPHENYLPHOSPHINE) HALOROHODIUM.
Claim 3
Dependent Claim
27 words
The process according to claim 1, wherein the organosilicon hydride is selected from the group consisting of triethylsilane, tripropylsilane, phenyldimethylsilane, triphenylsilane, diethylsilane, phenylmethylsilane, diphenylsilane, phenylsilane, and cyclohexylsilane.
Claim 4
Dependent Claim
27 words
The process according to claim 1, wherein the mercaptan is selected from the group consisting of C1 6 lower alkyl, mercaptans, benzyl mercaptans, thiophenol and p-tolyl mercaptan.
Claim 5
Dependent Claim
17 words
The process according to claim 1, wherein the organosilicon hydride is triethylsiliane and the mercaptan is thiophenol.
Claim 6
Dependent Claim
14 words
The process according to claim 1, wherein the reaction takes place in a solvent.
Claim 7
Dependent Claim
20 words
The process according to claim 1, wherein the tris(triphenylphosphine) is present in an amount of from 0.01 -0.1 mole percent.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |