US3776929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphinite,phosphonite,thiophosphi-nite,and dithiophosphonite com-pounds of palladium and platinum
Assignee: EIDP Inc
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Filing: 1971-10-18
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Granted: 1973-12-04
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Expires: 1991-10-18
Abstract
Abstract DISCLOSED HEREIN ARE COMPOUNDS HAVING THE FORMULA (L)2MXY, WHEREIN (L) IS A PHOSPHINITE, PHOSPHONITE, THIOPHOSPHINITE, OR DITHIOPHOSPHONITE LIGAND, M IS PD OR PT AND X AND Y ARE ALIKE OR DIFFERENT AND ARE SELECTED FROM CHLORINE, BROMINE, IODINE, VARIOUS SUBSTITUTED AND UNSUBSTITUTED ALKYLS AND ARYLS, CYANO,SNCL3, ISOCYANATO, THIOCYANATO, AROYL AND LOWER PERFLUOROALKYL GROUPS. THE PROCESS IVOLVES REACTING ONE EQUIVALENT OF A SOURCE OF MXY WITH TWO OR MORE EQUIVALENTS OF A SELECTED PHOSPHORUSCONTAINING LIGAND. THE PRODUCTS ARE USEFUL IN THE ALKOXYCARBONYLATION OF OLEFINS AND IN THE POLYMERIZATION OF ACETYLENE.
Inventors
- 👤 J Mrowca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0086; C07F15/0093; C07F15/006; C07F15/0066; C08; C08F; C08F10/00
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |