US2963517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation and purification of hydrocarbons
Assignee: Phillips Petroleum Co
•
Filing: 1958-11-17
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Granted: 1960-12-06
•
Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Scofield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD FOR RECOVERY OF C5 DIOLEFINS AND CYCLOPENTENE FROM A LIQUID C5 HYDROCARBON FRACTION CONTAINING SAME AND ALSO CONTAINING OTHER HYDROCARBONS WHICH COMPRISES THE STEPS OF CONTACTING SAID FRACTION WITH AN AQUEOUS CUPROUS CHLORIDE SLURRY CONTAINING 1-5 WEIGHT PERCENT AMMONIUM CHLORIDE AT A TEMPERATURE OF 40*F. OR BELOW, THEREBY FORMING A SOLID COMPLEX BETWEEN CUPROUS CHLORIDE AND SAID DIOLEFINS AND A SOLID COMPLEX BETWEEN CUPROUS CHLORIDE AND SAID CYCLOPENTENE, SEPARATING UNREACTED HYDROCARBONS, DECOMPOSING THE COMPLEXES AND THUS RECOVERING THE C5 DIOLEFINS AND CYCLOPENTENE IN ADMIXTURE, CONTACTING THE LATTER ADMIXTURE WITH AN AQUEOUS CUPROUS CHLORIDE SLURRY CONTAINING 15-25 WEIGHT PERCENT AMMONIUM CHLORIDE AT A TEMPERATURE FROM 65 TO 90*F. AND THUS FORMING A SOLID COMPLEX BETWEEN THE CUPROUS CHLORIDE AND DIOLEFINS BUT NOT THE CYCLOPENTENE, SEPARATING SAID CYCLOPENTENE FROM THE MIXTURE AND RECOVERING SAME, DECOMPOSING THE LAST-NAMED COMPLEX, AND SEPARATING THE RESULTING DIOLEFINS AND RECOVERING SAME.
Claim 2
Independent Claim
146 words
A METHOD FOR RECOVERY OF C5 DIOLEFINS AND CYCLOPENTENE FROM A LIQUID C5 HYDROCARBON FRACTION CONTAINING SAME AND ALSO CONTAINING OTHER HYDROCARBONS WHICH COMPRISES THE STEPS OF CONTACTING SAID FRACTION WITH AN AQUEOUS CUPROUS CHLORIDE SLURRY CONTAINING 1-5 WEIGHT PERCENT AMMONIUM CHLORIDE AT A TEMPERATURE OF 40*F. OR BELOW, THEREBY FORMING A SOLID COMPLEX BETWEEN CUPROUS CHLORIDE AND SAID DIOLEFINS AND A SOLID COMPLEX BETWEEN CUPROUS CHLORIDE AND SAID CYCLOPENTENE, SEPARATING UNREACTED HYDROCARBONS, DECOMPOSING THE COMPLEXES AND THUS RECOVERING THE C5 DIOLEFINS AND CYCLOPENTENE IN ADMIXTURE, CONTACTING THE LATTER ADMIXTURE WITH AN AQUEOUS CUPROUS CHLORIDE SLURRY CONTAINING 15-25 WEIGHT PERCENT AMMONIUM CHLORIDE AT A TEMPERATURE FROM 65 TO 90*F. AND THUS FORMING A SOLID COMPLEX BETWEEN THE CUPROUS CHLORIDE AND DIOLEFINS BUT NOT THE CYCLOPENTENE, SEPARATING SAID CYCLOPENTENE FROM THE MIXTURE AND RECOVERING SAME, DECOMPOSING THE LAST-NAMED COMPLEX, AND SEPARATING THE RESULTING DIOLEFINS AND RECOVERING SAME.
References Cited (Backward Citations)
US2386333A
Cited
US2386334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |