Patent US3652676A successfully refreshed from Google Patents.
US3652676A
Expired / Lapsed
US
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Hydroformylation process and catalyst
Assignee: Phillips Petroleum Co
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Filing: 1969-07-11
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Granted: 1972-03-28
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Expires: 1989-07-11
Abstract
Abstract HYDROFORMYLATION REACTIONS ARE CARRED OUT IN THE PRESENCE OF A CATALYST COMPRISING A SOLID POLYMER HAVING ASSOCICATED THEREWITH A METAL OF THE GROUP COBALT,RHODIUM, RUTHEINIUM, PLATINUM AND PALLADIUM. THE POLYMER IS FORMED BY POLYMERIZING A PYRIDINE AND A STYRENE IN THE PRESENCE OF A POLYVINYLAROMATIC COMPOUND. THIS POLYMER CAN BY USED TO REMOVE CATALYST RESIDUES FROM HYDROFORMYLATION REACTION EFFLUENT STREAMS.
Inventors
- 👤 Gerald R Kahle
- 👤 James W Cleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:37
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C08F26/00; C08F26/06
Claims Analysis
Total Claims: 0
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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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |