US3080437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper salt slurry process for diolefin separation
Assignee: Phillips Petroleum Co
•
Filing: 1959-08-31
•
Granted: 1963-03-05
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Scofield
- 👤 Frederick L Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; C07C7/156
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD FOR RECOVERY OF C5 DIOLEFINS FROM A LIQUID C5 HYDROCARBON FRACTION CONTAINING THE SAME AND ALSO CONTAINING OTHER HYDROCARBONS WHICH COMPRISES THE STEPS OF CONTACTING SAID FRACTION WITH AN AQUEOUS SLURRY OF A COPPER SALT ABSORPTION MEDIUM FOR SAID DIOLEFINS IN A REFRIGERATED CONTACTING ZONE FOR A PERIOD OF TIME SUFFICIENT TO PERMIT FORMATION OF A SOLID COMPLEX BETWEEN SAID DIOLEFINS AND SAID ABSORPTION MEDIUM, SEPARATING UNREACTED HYDROCARBONS FROM SAID COMPLEX AND RECYCLING AT LEAST A PORTION OF SAID SEPARATED HYDROCARBONS TO SAID CONTACTING ZONE, DECOMPOSING SAID COMPLEX FOR RECOVERY OF SAID DIOLEFINS AND AN AQUEOUS SLURRY OF SAID ABSORPTION MEDIUM, REDUCING THE PRESSURE ON SAID RECOVERD SLURRY TO FORM BY EVAPORATIVE COOLING A COOLED SLURRY OF SAID ABSORPTION MEDIUM, AND RETURNING SAID COOLED ABSORPTION MEDIUM SLURRY TO SAID CONTACTING FOR REUSE IN SAID METHOD.
Claim 2
Independent Claim
137 words
A METHOD FOR RECOVERY OF C5 DIOLEFINS FROM A LIQUID C5 HYDROCARBON FRACTION CONTAINING THE SAME AND ALSO CONTAINING OTHER HYDROCARBONS WHICH COMPRISES THE STEPS OF CONTACTING SAID FRACTION WITH AN AQUEOUS SLURRY OF A COPPER SALT ABSORPTION MEDIUM FOR SAID DIOLEFINS IN A REFRIGERATED CONTACTING ZONE FOR A PERIOD OF TIME SUFFICIENT TO PERMIT FORMATION OF A SOLID COMPLEX BETWEEN SAID DIOLEFINS AND SAID ABSORPTION MEDIUM, SEPARATING UNREACTED HYDROCARBONS FROM SAID COMPLEX AND RECYCLING AT LEAST A PORTION OF SAID SEPARATED HYDROCARBONS TO SAID CONTACTING ZONE, DECOMPOSING SAID COMPLEX FOR RECOVERY OF SAID DIOLEFINS AND AN AQUEOUS SLURRY OF SAID ABSORPTION MEDIUM, REDUCING THE PRESSURE ON SAID RECOVERD SLURRY TO FORM BY EVAPORATIVE COOLING A COOLED SLURRY OF SAID ABSORPTION MEDIUM, AND RETURNING SAID COOLED ABSORPTION MEDIUM SLURRY TO SAID CONTACTING FOR REUSE IN SAID METHOD.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |