US3564072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene dimerization
Assignee: Sunoco Inc
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Filing: 1969-05-06
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Granted: 1971-02-16
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Expires: 1989-05-06
Abstract
Abstract ETHYLENE IS DIMERIZED BY CONTACT AT A TEMPERATURE IN THE RANGE OF -40* TO 100*C., PREFERABLY -10* TO 50* C., WITH NOVEL CATALYST SYSTEMS FORMED BY COMBINING (1) CERTAIN TYPES OF NICKEL (II) PHOSPHINE COORDINATION COMPLEXES; (2) INORGANIC LEWIS ACIDS SUCH AS ALCL3, BF3, ALBR3, ETC.; AND (3) AN EXCESS OF A PHOSPHINE. THE PROPORTIONS OF THE CATALYST COMPONENTS ARE SUCH THAT THE ATOMIC RATIO OF AL:NI IS IN EXCESS OF 2:1, THE MOLAR RATIO OF LEWIS ACID:PHOSPHINE IS IN THE RANGE OF 2.5:1 TO 3.5:1, AND THE CATALYSTS ARE USED IN SOLUTION IN A SUITABLE LIQUID MEDIUM, E.G., CHLOROBENZENE.
Inventors
- 👤 Walter A Butte Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:36
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/24; B01J31/2404; B01J31/2409; B01J31/26; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126; C07C2531/00; C07C2531/16; C07C2531/24; C07C2531/26
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |