US2683752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dephenolization
Assignee: Standard Oil Co
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Filing: 1952-11-21
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Granted: 1954-07-13
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Expires: 1972-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jr William E Stanley
- 👤 Robert A Dinerstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:29
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A PROCESS OF DEPHENOLIZING AN AQUEOUS SOLUTION OF PHENOLS, THE STEPS OF MAINTAINING THE SAID AQUEOUS SOLUTION AT A PH OF LESS THAN ABOUT 9 BY ADJUSTING TO THE SAID PH ANY SOLUTION HAVING A GREATER PH, EXTRACTING PHENOLS FROM THE SAID AQUEOUS SOLUTION WITH AN EXTRACTANT CONSISTING ESSENTIALLY OF AT LEAST A FRACTION OF A DISTILLATION RESIDUE OF A PRODUCT OF THE FIRST STAGE OF AN OXO SYNTHESIS THAT COMPRISES REACTING AN OLEFIN HAVING FROM 3 TO ABOUT 16 CARBON ATOMS PER MOLECULE WITH HYDROGEN AND CARBON MONOXIDE IN A MOL RATIO BETWEEN ABOUT 1:4 AND 4:1 AND IN THE PRESENCE OF A COBALT CATALYST COMPOUND, THE SAID EXTRACTANT CONTAINING THE FOLLOWING WATER-INSOLUBLE COMPONENTS: 10 TO 50% ALDEHYDES, 1 TO 15% ACID, 5 TO 40% ESTERS, 0 TO 10% ALCOHOLS, AND THE REMAINDER ACETALS AND CONDENSATION PRODUCTS, SEPARATING PHENOL-ENRICHED EXTRACTANT FROM THE TREATED AQUEOUS SOLUTION AND SEPARATING PHENOLS FROM THE SAID EXTRACTANT TO REGENERATE THE SAME FOR TREATMENT OF FURTHER QUANTITIES OF THE SAID AQUEOUS SOLUTION.
Claim 2
Dependent Claim
168 words
IN A PROCESS OF DEPHENOLIZING AN AQUEOUS SOLUTION OF PHENOLS, THE STEPS OF MAINTAINING THE SAID AQUEOUS SOLUTION AT A PH OF LESS THAN ABOUT 9 BY ADJUSTING TO THE SAID PH ANY SOLUTION HAVING A GREATER PH, EXTRACTING PHENOLS FROM THE SAID AQUEOUS SOLUTION WITH AN EXTRACTANT CONSISTING ESSENTIALLY OF AT LEAST A FRACTION OF A DISTILLATION RESIDUE OF A PRODUCT OF THE FIRST STAGE OF AN OXO SYNTHESIS THAT COMPRISES REACTING AN OLEFIN HAVING FROM 3 TO ABOUT 16 CARBON ATOMS PER MOLECULE WITH HYDROGEN AND CARBON MONOXIDE IN A MOL RATIO BETWEEN ABOUT 1:4 AND 4:1 AND IN THE PRESENCE OF A COBALT CATALYST COMPOUND, THE SAID EXTRACTANT CONTAINING THE FOLLOWING WATER-INSOLUBLE COMPONENTS: 10 TO 50% ALDEHYDES, 1 TO 15% ACID, 5 TO 40% ESTERS, 0 TO 10% ALCOHOLS, AND THE REMAINDER ACETALS AND CONDENSATION PRODUCTS, SEPARATING PHENOL-ENRICHED EXTRACTANT FROM THE TREATED AQUEOUS SOLUTION AND SEPARATING PHENOLS FROM THE SAID EXTRACTANT TO REGENERATE THE SAME FOR TREATMENT OF FURTHER QUANTITIES OF THE SAID AQUEOUS SOLUTION.
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) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |