US2815355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing carboxylic acids
Assignee: Standard Oil Co
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Filing: 1954-07-07
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Granted: 1957-12-03
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Expires: 1974-07-07
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/23; C07C51/235; C07C45/00; C07C45/49; C07C45/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR PREPARING A SATURATED ALIPHATIC CARBOXYLIC ACID FROM A C7 PROPYLENE-BUTYLENE INTERPOLYMER ****TION PRODUCT OBTAINED BY MEANS OF THE OXO PROCABOUT 53 PERCENT OCTYL ALDEHYDES, 15 PERCENT OCTYL ALCOHOLS, 7 PERCENT HIGH BOILING MATERIALS AND 25 PERCENT UNREACTED OLEFINS, WHICH PROCESS COMPRISES SUBSTANTIALLY ELIMINATING OLEFINS FROM SAID FORMYLATION PRODUCT BY DISTILLATION UNDER VACUUM AND OXIDIZING THE SUBSTANTIALLY OLEFIN-FREE ALDEHYDES BY BUBBLING OXYGEN THROUGH A LIQUID MASS THEREOF AT A TEMPERATURE OF ABOUT 70*C. AT AN OXYGEN RATE OF ABOUT 12 MOL PER MOL OF ALDEHYDE PER HOUR FOR A PERIOD OF AT LEAST 8 HOURS WHEREBY ACID YEILD DURING THE 8 HOUR PERIOD IS ABOUT SEVEN TIMES GREATER THAN OBTAINABLE FROM THE SAME FORMYLATION PRODUCT BY OXIDIZING UNDER THE SAME CONDITIONS BUT IN THE ABSENCE OF THE OLEFIN ELIMUNATION STEP.
Claim 2
Dependent Claim
132 words
A PROCESS FOR PREPARING A SATURATED ALIPHATIC CARBOXYLIC ACID FROM A C7 PROPYLENE-BUTYLENE INTERPOLYMER ****TION PRODUCT OBTAINED BY MEANS OF THE OXO PROCABOUT 53 PERCENT OCTYL ALDEHYDES, 15 PERCENT OCTYL ALCOHOLS, 7 PERCENT HIGH BOILING MATERIALS AND 25 PERCENT UNREACTED OLEFINS, WHICH PROCESS COMPRISES SUBSTANTIALLY ELIMINATING OLEFINS FROM SAID FORMYLATION PRODUCT BY DISTILLATION UNDER VACUUM AND OXIDIZING THE SUBSTANTIALLY OLEFIN-FREE ALDEHYDES BY BUBBLING OXYGEN THROUGH A LIQUID MASS THEREOF AT A TEMPERATURE OF ABOUT 70*C. AT AN OXYGEN RATE OF ABOUT 12 MOL PER MOL OF ALDEHYDE PER HOUR FOR A PERIOD OF AT LEAST 8 HOURS WHEREBY ACID YEILD DURING THE 8 HOUR PERIOD IS ABOUT SEVEN TIMES GREATER THAN OBTAINABLE FROM THE SAME FORMYLATION PRODUCT BY OXIDIZING UNDER THE SAME CONDITIONS BUT IN THE ABSENCE OF THE OLEFIN ELIMUNATION STEP.
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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |