US3728283A
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US
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Modified al-nn catalyst for dimerizing olefins
Assignee: IFP Energies nouvelles
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Filing: 1970-05-15
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Granted: 1973-04-17
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Expires: 1990-05-15
Abstract
Abstract THIS INVENTION RELATES TO THE MANUFACTURE OF A DIMERIZATION CATALYST, TO THE CATALYST THUS OBTAINED AND TO A PROCESS FOR DIMERZING OLEFINS WITH THE SAID CATALYST. THE CATALYST IS MANUFACTURE BY REACTING A DIHYDROCARBYL ALUMINUM MONOHALIDE WITH A CONTROLLED AMOUNT OF WATER AT A TEMPERATURE LESS THAN 20*C., THEN SEPARATING THE INSOLUBLE FRACTION AND THEREAFTER CONTACTING THE SOLUBLE FRACTION WITH NICKEL OR A NICKEL COMPOUND. THE CATALYST ISPERFERABLY USED AT TEMPERATURES HIGHER THAN 20*C.
Inventors
- 👤 Y Chauvin
- 👤 J Gaillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:49
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/24; B01J31/2404; B01J31/26; B01J31/28; C07C2/30; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |