US3631191A
Expired / Lapsed
US
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Synthesis of zero valent nickel-tetrakis triaryl phosphite complexes
Assignee: EIDP Inc
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Filing: 1970-04-08
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Granted: 1971-12-28
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Expires: 1990-04-08
Abstract
Abstract THE PROCESS FOR PREPARING A ZERO VALENT NICKELPHOSPHITE COMPLEX BY REACTING A DIVALENT NICKEL COMPOUND WITH A REDUCING METAL IN THE PRESENCE OF A TRIARYL PHOSPHITE IN A SATURATED ALIPHATIC DINITRILE SOLVENT. THE REACTION MIXTURE SEPARATES INTO MULTIPLE PHASES, ONE OF WHICH CONTAINS THE DESIRED COMPLEX SUBSTANTIALLY FREE OF BY-PRODUCT AND ANOTHER PHASE CONTAINING THE BY-PRODUCT OF THE REDUCING ACTION.
Inventors
- 👤 Neal James Kane
- 👤 John Brockway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:56
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/04; C07F15/045; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1845; B01J31/185; C07C; C07C253/00; C07C253/08; C07C253/10; C07C253/32; C07C253/34; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2531/00; B01J2531/80; 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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |