US3165478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the regeneration of raney-nickel catalyst
Assignee: Kali Chemie AG
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Filing: 1961-08-03
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Granted: 1965-01-12
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Expires: 1981-08-03
Abstract
No abstract record available.
Inventors
- 👤 Hauschild Ulrich
- 👤 Nicolans Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:56
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023; B; B01; B01J; B01J25/00; B01J25/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR THE REGENERATION OF RANEY-NICKEL CATALYSTS USED IN THE PRODUCTION OF HYDROGEN PEROXIDE OVER ORGANIC COMPOUNDS IN THE HYDROGENATION STEPS, COMPRISING CONTACTING THE USED CATALYST UNDER EXCLUSION OF FREE OXYGEN, AT A TEMPERATURE IN THE RANGE BETWEEN ORDINARY ROOM TEMPERATURE OF 15-25*C. AND 50*C., WITH THE SOLUTION OF CARBOXYLIC ACID IN AN ALCOHOL, THE CARBOXYLIIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF ACETIC ACID, PROPIONIC ACID, BUTYRIC ACID, CAPROIC ACID, CAPRIC ACID, PALMTIC ACID, STEARIC ACID, OLEIC ACID, LACTIC ACID, MALOMIC ACID, SUCCINC ACID, ADIPIC ACID, MALEIC ACID, FUMARIC ACID, TARTARIC ACID, PYROACEMIC ACID AND BENZOIC ACID, AND THE ALCOHOL BEING SELECTED FROM THE GROUP CONSISTING OF LOWER ALIPHATIC AND CYCLOALIPHATIC MONOFUNCTIONAL ALCOHOLS AND USING 1.5 TO 4.5 PARTS OF THE ALCOHOLIC SOLUTION CONTAINING 10 TO 50% OF THE CARBOXYLIC ACID FOR ONE PART OF THE CATALYST TO BE REGENERATED.
Claim 2
Dependent Claim
143 words
A PROCESS FOR THE REGENERATION OF RANEY-NICKEL CATALYSTS USED IN THE PRODUCTION OF HYDROGEN PEROXIDE OVER ORGANIC COMPOUNDS IN THE HYDROGENATION STEPS, COMPRISING CONTACTING THE USED CATALYST UNDER EXCLUSION OF FREE OXYGEN, AT A TEMPERATURE IN THE RANGE BETWEEN ORDINARY ROOM TEMPERATURE OF 15-25*C. AND 50*C., WITH THE SOLUTION OF CARBOXYLIC ACID IN AN ALCOHOL, THE CARBOXYLIIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF ACETIC ACID, PROPIONIC ACID, BUTYRIC ACID, CAPROIC ACID, CAPRIC ACID, PALMTIC ACID, STEARIC ACID, OLEIC ACID, LACTIC ACID, MALOMIC ACID, SUCCINC ACID, ADIPIC ACID, MALEIC ACID, FUMARIC ACID, TARTARIC ACID, PYROACEMIC ACID AND BENZOIC ACID, AND THE ALCOHOL BEING SELECTED FROM THE GROUP CONSISTING OF LOWER ALIPHATIC AND CYCLOALIPHATIC MONOFUNCTIONAL ALCOHOLS AND USING 1.5 TO 4.5 PARTS OF THE ALCOHOLIC SOLUTION CONTAINING 10 TO 50% OF THE CARBOXYLIC ACID FOR ONE PART OF THE CATALYST TO BE REGENERATED.
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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |