US4017552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicyclo-[3'3'0]-octa-2-ene formed by isomerizing 1,5-cyclooctadiene
Assignee: Goodyear Tire and Rubber Co
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Filing: 1973-03-07
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Granted: 1977-04-12
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Expires: 1993-03-07
Abstract
Abstract There is disclosed a method for isomerizing cyclic olefinic hydrocarbons to bicyclic olefins by contacting the cyclic olefins with a catalyst comprised of at least (1) a nickel compound selected from the class consisting of nickel salts of carboxylic acids and organonickel complexes and (2) at least one co-catalyst consisting of organoaluminum compounds or aluminum trihalides at atmospheric pressure and ambient temperatures.
Inventors
- 👤 Henry R. Menapace
- 👤 Neil A. Maly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:16
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
56 words
A process which comprises isomerizing 1,5-cyclooctadiene to bicyclo-[3.3.0]-octa-2-ene by contacting 1,5-cyclooctadiene with a catalyst of (1) a soluble nickle compound selected from at least one of the group consisting of nickel salts of carboxylic acids and (2) a co-catalyst selected from at least one of the group consisting of alkylaluminum dichloride, alkylaluminum sesquichloride and aluminum trichloride.
Claim 2
Dependent Claim
56 words
A process which comprises isomerizing 1,5-cyclooctadiene to bicyclo-[3.3.0]-octa-2-ene by contacting 1,5-cyclooctadiene with a catalyst of (1) a soluble nickle compound selected from at least one of the group consisting of nickel salts of carboxylic acids and (2) a co-catalyst selected from at least one of the group consisting of alkylaluminum dichloride, alkylaluminum sesquichloride and aluminum trichloride.
Claim 3
Dependent Claim
39 words
A process which comprises isomerizing 1,5-cyclooctadiene to bicyclo-[3.3.0]-octa-2-ene by contacting 1,5-cyclooctadiene with a catalyst of (1) nickel octanoate and (2) a co-catalyst selected from at least one of the group consisting of ethylaluminum dichloride, ethylaluminum sesquichloride and aluminum trichloride.
Claim 4
Dependent Claim
39 words
A process which comprises isomerizing 1,5-cyclooctadiene to bicyclo-[3.3.0]-octa-2-ene by contacting 1,5-cyclooctadiene with a catalyst of (1) nickel octanoate and (2) a co-catalyst selected from at least one of the group consisting of ethylaluminum dichloride, ethylaluminum sesquichloride and aluminum trichloride.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |