Patent US2527951A successfully refreshed from Google Patents.
US2527951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon separation
Assignee: Phillips Petroleum Co
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Filing: 1948-09-27
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Granted: 1950-10-31
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Expires: 1968-09-27
Abstract
No abstract record available.
Inventors
- 👤 Bertrand J Mayland
- 👤 Edward E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:12
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C07; C07C; C07C7/00; C07C7/10; C10G21/12; C10G21/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF RESOLVING A MIXTURE OF ALIPHATIC HYDROCARBONS CONTAINING HYDROCARBON TYPES OF AT LEAST THREE DEGREES OF SATURATION WHICH COMPRISES INTIMATELY CONTACTING SAID MIXTURE WITH A LIQUID SELECTIVE SOLVENT CONSISTING ESSENTIALLY OF ETHANOLAMINE AND NON-POLAR SOLVENT IN WHICH N-BUTANE HAS AN ACTIVITY COEFFICIENT BETWEEN 1.0 AND 2.0 AND IN WHICH AT LEAST ONE OF BUTENE AND BUTADIENE HAS AN ACTIVITY COEFFICIENT LESS THAN 1.0 AND SELECTED FROM THE GROUP CONSISTING OF PARALDEHYDE AND TETRATHYLORTHOSILICATE AND THEREBY EFFECTING A PREFERENTIAL DISSOLUTION OF AT LEAST ONE OF THE UNSATURATED HYDROCARBON TYPES IN SAID SELECTIVE SOLVENT AS THE EXTRACT PHASE AND SEPARATION F AT LEAST ONE OF THE MORE SATURATED HYDROCARBON TYPES IN THE RAFFINATE PHASE, AND INTIMATELY CONTACTING THE HYDROCARBON CONTENT OF THE PHASE CONTAINING MORE THAN ONE HYDROCARBON TYPE FROMT HE FIRST-NAMED CONTACTING STEP WITH A SECOND LIQUID SELECTIVE SOLVENT CONSISTING ESSENTIALLY OF ETHANOLAMINE AND NONPOLAR SOLVENT WHICH IS PARALDEHYDE WHEN TETRAETHYLORTHOSILICATE IS THE FIRST-NAMED POLAR SOLVENT AND TETRAETHYLORTHOSILICATE WHEN PARALDEHYDE IS THE FIRST-NAMED POLAR SOLVENT, AND THEREBY EFFECTING PREFERENTIAL DISSOLUTION OF THE MORE UNSATURATED HYDROCARBON TYPE IN SAID SECOND SELECTIVE SOLVENT.
Claim 2
Independent Claim
182 words
THE METHOD OF RESOLVING A MIXTURE OF ALIPHATIC HYDROCARBONS CONTAINING HYDROCARBON TYPES OF AT LEAST THREE DEGREES OF SATURATION WHICH COMPRISES INTIMATELY CONTACTING SAID MIXTURE WITH A LIQUID SELECTIVE SOLVENT CONSISTING ESSENTIALLY OF ETHANOLAMINE AND NON-POLAR SOLVENT IN WHICH N-BUTANE HAS AN ACTIVITY COEFFICIENT BETWEEN 1.0 AND 2.0 AND IN WHICH AT LEAST ONE OF BUTENE AND BUTADIENE HAS AN ACTIVITY COEFFICIENT LESS THAN 1.0 AND SELECTED FROM THE GROUP CONSISTING OF PARALDEHYDE AND TETRATHYLORTHOSILICATE AND THEREBY EFFECTING A PREFERENTIAL DISSOLUTION OF AT LEAST ONE OF THE UNSATURATED HYDROCARBON TYPES IN SAID SELECTIVE SOLVENT AS THE EXTRACT PHASE AND SEPARATION F AT LEAST ONE OF THE MORE SATURATED HYDROCARBON TYPES IN THE RAFFINATE PHASE, AND INTIMATELY CONTACTING THE HYDROCARBON CONTENT OF THE PHASE CONTAINING MORE THAN ONE HYDROCARBON TYPE FROMT HE FIRST-NAMED CONTACTING STEP WITH A SECOND LIQUID SELECTIVE SOLVENT CONSISTING ESSENTIALLY OF ETHANOLAMINE AND NONPOLAR SOLVENT WHICH IS PARALDEHYDE WHEN TETRAETHYLORTHOSILICATE IS THE FIRST-NAMED POLAR SOLVENT AND TETRAETHYLORTHOSILICATE WHEN PARALDEHYDE IS THE FIRST-NAMED POLAR SOLVENT, AND THEREBY EFFECTING PREFERENTIAL DISSOLUTION OF THE MORE UNSATURATED HYDROCARBON TYPE IN SAID SECOND SELECTIVE SOLVENT.
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) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |