Patent US2484226A successfully refreshed from Google Patents.
US2876241A
Expired / Lapsed
US
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Process for the production of carboxylic acids
Assignee: Studiengesellschaft Kohle gGmbH
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Filing: 1955-05-12
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Granted: 1959-03-03
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Expires: 1975-05-12
Abstract
No abstract record available.
Inventors
- 👤 Koch Herbert
- 👤 Huisken Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:33
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN THE PROCESS FOR THE PRODUCTION OF CARBOXYLIC ACIDS BY REACTION OF AN OLEFIN WITH CARBON MONOXIDE IN THE PRESENCE OF A CATALYST, THE IMPROVEMENT, FACILITATING CATALYST RECOVERY FOR REUSE, WHICH COMPRISES EFFECTING SAID REACTION BY CONTACTING AN OLEFIN, HAVING A BRANCHED CHAIN AT A DOUBLE BOND CARBON ATOM, IN THE LIQUID PHASE WITH CARBON MONOXIDE AT A TEMPERATURE BETWEEN ABOUT -10* AND 100*C. UNDER SUBSTANTIALLY ANHYDROUS CONDITION IN THE PRESENCE OF A SUBSTANTIALLY ANHYDROUS CATALYST SELECTED FROM THE GROUP CONSISTING OF MONOHYDROXYFLUOBORIX ACID, MONOHYDROXYFLUOBORIC ACID MIXED WITH PHOSPHORIC ACID AND MONOHYDROXYFLUOBORIC ACID MIXED WITH SULFURIC ACID AND THEREAFTER ADDING WATER TO THE REACTION MIXTURE FORMING A LAYER CONTAINING THE FORMED CARBOXYLIC ACID, AND A SEPARATE LAYER CONTAINING SEPARATED CATALYST SUITABLE FOR DIRECT REUSE.
Claim 2
Dependent Claim
124 words
IN THE PROCESS FOR THE PRODUCTION OF CARBOXYLIC ACIDS BY REACTION OF AN OLEFIN WITH CARBON MONOXIDE IN THE PRESENCE OF A CATALYST, THE IMPROVEMENT, FACILITATING CATALYST RECOVERY FOR REUSE, WHICH COMPRISES EFFECTING SAID REACTION BY CONTACTING AN OLEFIN, HAVING A BRANCHED CHAIN AT A DOUBLE BOND CARBON ATOM, IN THE LIQUID PHASE WITH CARBON MONOXIDE AT A TEMPERATURE BETWEEN ABOUT -10* AND 100*C. UNDER SUBSTANTIALLY ANHYDROUS CONDITION IN THE PRESENCE OF A SUBSTANTIALLY ANHYDROUS CATALYST SELECTED FROM THE GROUP CONSISTING OF MONOHYDROXYFLUOBORIX ACID, MONOHYDROXYFLUOBORIC ACID MIXED WITH PHOSPHORIC ACID AND MONOHYDROXYFLUOBORIC ACID MIXED WITH SULFURIC ACID AND THEREAFTER ADDING WATER TO THE REACTION MIXTURE FORMING A LAYER CONTAINING THE FORMED CARBOXYLIC ACID, AND A SEPARATE LAYER CONTAINING SEPARATED CATALYST SUITABLE FOR DIRECT REUSE.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |