US3689588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dimerization of olefins
Assignee: Phillips Petroleum Co
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Filing: 1970-06-18
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Granted: 1972-09-05
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Expires: 1990-06-18
Abstract
Abstract A process for the catalytic dimerization of olefins with a catalyst formed from (1) a nickel(II) complex containing organophosphine ligands and a carbon-containing moiety sigma bonded to the central nickel atom, and (2) an alkylaluminum halide activator.
Inventors
- 👤 Howard E Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
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
Total Claims: 5
Claim 1
Independent Claim
13 words
A process according to claim 1 wherein the alkylaluminum halide is ethylaluminum dichloride.
Claim 2
Dependent Claim
13 words
A process according to claim 1 wherein the chlorinated hydrocarbon solvent is chlorobenzene.
Claim 3
Dependent Claim
21 words
A process according to claim 1 wherein the molar ratio of the alkylaluminum halide to nickel complex is 100:1 to 1:1.
Claim 4
Dependent Claim
11 words
A process according to claim 1 wherein the monoolefin is propylene.
Claim 5
Dependent Claim
44 words
A process for the dimerization of olefins comprising: contacting monoolefins having from two to 12 carbon atoms per molecule with chlorotrifluorovinylbis(triethylphosphine)nickel(II) in the presence of an alkylaluminum halide activator and a solvent selected from the group consisting of aromatic, aliphatic, cycloaliphatic and chlorinated hydrocarbons.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |