US3636128A
Expired / Lapsed
US
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Olefin oligomerization with a nickel-containing catalyst system
Assignee: Phillips Petroleum Co
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Filing: 1969-04-24
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Granted: 1972-01-18
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Expires: 1989-04-24
Abstract
Abstract OLEINS SUCH AS PROPYLENE ARE OLIGOMERIZED TO PRODUCTS SUCH AS DIMERS WITH A CATALYST SYSTEM COMPRISING AN ORGANOALUMINUM COMPOUND SUCH AS ETHYLALUMUNUM DICHLORIDE AND A NICKEL COMPLEX SUCH AS (1,2-BIS(DIPHENYLPHOSPHINO) ETHYLENE) DICHLORONICKEL, WHEREIN THE NICKEL COMPONENT CAN BE RECOVERED AND RECYCLED TO THE OLIGOMERIZATION ZONE.
Inventors
- 👤 Howard E Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/24
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |