US3772347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transition metal catalyzed silylations
Assignee: Dow Silicones Corp
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Filing: 1971-12-15
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Granted: 1973-11-13
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Expires: 1991-12-15
Abstract
Abstract OR M''(PR''3)2SI(RAC13-A)MX2-M. SPECIFICALLY, HEXACHLORODISILANE IS REACTED WITH ALLYL CHLORIDE IN THE PRESENCE OF PD(P(CH3)2C6H5)2C12 TO GIVE ALLYL TRICHLOROSILANE. THE REACTION BETWEEN DISILANES AND HYDROCARBON CHLORIDES TO PRODUCE R''NSIC14-N IS CATALYZED WITH M'', M(PR"3)2X2
Inventors
- 👤 W Atwell
- 👤 G Bokerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:22
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/121; C07F7/123; B; B01; B01J; B01J31/00; B01J31/16; B01J31/1608; B01J31/1616; B01J31/24; B01J31/2404; C07F7/0803; C07F7/0825; C07F7/0827; C07F7/122; B01J21/00; B01J21/18; B01J2231/00; B01J2231/40; B01J2231/42; B01J2231/4277; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/824; B01J2531/828; B01J2531/84; B01J2531/847
Claims Analysis
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |