US3714284A
Expired / Lapsed
US
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Dimerization of olefinic compounds
Assignee: Universal Oil Products Co
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Filing: 1970-10-26
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Granted: 1973-01-30
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Expires: 1990-10-26
Abstract
Abstract Olefinic compounds, and particularly conjugated diolefinic hydrocarbons, are dimerized in the presence of certain catalytic compositions of matter at dimerization conditions to produce dimers which possess certain specific configurations.
Inventors
- 👤 T Symon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:00
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1845; B01J31/185; B01J31/24; B01J31/2404; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/824; B01J2531/828; C07C2531/00; C07C2531/16; C07C2531/22; C07C2531/24; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A process for the dimerization of a conjugated diolefinic hydrocarbon which comprises forming a mixture of reactants consisting essentially of said hydrocarbon, a hydrocarbyl phosphite or phosphine and a platinum or palladium salt in amounts to form a catalyst complex having a mol ratio of from about 2:1 to about 10:1 mols of organo phosphorus ligand per mol of platinum or palladium, and heating said mixture at a temperature in the range of from about 25* to about 250* C. and a pressure in the range of from about atmospheric to about 100 atmospheres, for a sufficient time to form said catalyst complex and to dimerize said hydrocarbon.
Claim 2
Dependent Claim
108 words
A process for the dimerization of a conjugated diolefinic hydrocarbon which comprises forming a mixture of reactants consisting essentially of said hydrocarbon, a hydrocarbyl phosphite or phosphine and a platinum or palladium salt in amounts to form a catalyst complex having a mol ratio of from about 2:1 to about 10:1 mols of organo phosphorus ligand per mol of platinum or palladium, and heating said mixture at a temperature in the range of from about 25* to about 250* C. and a pressure in the range of from about atmospheric to about 100 atmospheres, for a sufficient time to form said catalyst complex and to dimerize said hydrocarbon.
Claim 3
Dependent Claim
16 words
The process as set forth in claim 1 in which said catalyst complex is tetrakis(tricyclohexyl phosphine)palladium(O).
Claim 4
Dependent Claim
17 words
The process as set forth in claim 1 in which said catalyst complex is tetrakis(tri-n-butyl phosphine)palladium (O).
Claim 5
Dependent Claim
16 words
The process as set forth in claim 1 in which said catalyst complex is tetrakis(tribenzyl phosphite)platinum(O).
Claim 6
Dependent Claim
16 words
The process as set forth in claim 1 in which said catalyst complex is tetrakis(tri-n-octyl phosphine)palladium(O).
Claim 7
Dependent Claim
15 words
The process as set forth in claim 1 in which said olefinic hydrocarbon is isoprene.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |