Patent US3726419A successfully refreshed from Google Patents.
Patent US2614970A successfully refreshed from Google Patents.
US2614970A
Expired / Lapsed
US
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Extractive distillation of alcohol-aldehyde solutions
Assignee: Standard Oil Development Co
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Filing: 1949-08-26
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Granted: 1952-10-21
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Expires: 1969-08-26
Abstract
No abstract record available.
Inventors
- 👤 Charles E Morrell
- 👤 Stewart Joseph
- 👤 Carl S Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:36
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD FOR THE SEPARATION AND RECOVERY OF ALDEHYDES AND ALCOHOLS FROM A MIXTURE OF OXYGENATED COMPOUNDS OBTAINED BY THE OXO REACTION, SAID MIXTURE CONTAINING CLOSE-BOILING OXYGENATED COMPONENTS INCLUDING ALDEHYDES, ALCOHOLS, ACETALS, HEMIACETALS, AND UNSATURATED ETHERS, WHICH COMPRISES SUBJECTING SAID MIXTURE TO A SIMULTANEOUS HYDROLYSIS AND EXTRACTIVE DISTILLATION USING AS AN EXTRACTION SOLVENT A DILUTE AQUEOUS ACIDIC SOLUTION HAVING A PH IN THE RANGE OF 1 TO 5 AND CONTAINING IN SOLUTION AT LEAST 20% BY WEIGHT OF A WATER-SOLUBLE SALT OF A MONONUCLEAR AROMATIC SULFONIC ACID, WHEREBY THE ACETALS, HEMIACETALS, AND UNSATURATED ETHERS ARE HYDROLYZED, THOSE COMPONENTS WHICH ARE RELATIVELY MORE VOLATILE IN THE PRESENCE OF THE AQUEOUS SOLVENT ARE SEPARATED FROM THOSE COMPONENTS WHICH ARE RELATIVELY LESS VOLATILE.
Claim 2
Independent Claim
120 words
A METHOD FOR THE SEPARATION AND RECOVERY OF ALDEHYDES AND ALCOHOLS FROM A MIXTURE OF OXYGENATED COMPOUNDS OBTAINED BY THE OXO REACTION, SAID MIXTURE CONTAINING CLOSE-BOILING OXYGENATED COMPONENTS INCLUDING ALDEHYDES, ALCOHOLS, ACETALS, HEMIACETALS, AND UNSATURATED ETHERS, WHICH COMPRISES SUBJECTING SAID MIXTURE TO A SIMULTANEOUS HYDROLYSIS AND EXTRACTIVE DISTILLATION USING AS AN EXTRACTION SOLVENT A DILUTE AQUEOUS ACIDIC SOLUTION HAVING A PH IN THE RANGE OF 1 TO 5 AND CONTAINING IN SOLUTION AT LEAST 20% BY WEIGHT OF A WATER-SOLUBLE SALT OF A MONONUCLEAR AROMATIC SULFONIC ACID, WHEREBY THE ACETALS, HEMIACETALS, AND UNSATURATED ETHERS ARE HYDROLYZED, THOSE COMPONENTS WHICH ARE RELATIVELY MORE VOLATILE IN THE PRESENCE OF THE AQUEOUS SOLVENT ARE SEPARATED FROM THOSE COMPONENTS WHICH ARE RELATIVELY LESS VOLATILE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |