US3849484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of percarboxylic acid
Assignee: DEUTSCHE GOLD und SILBER SCHEIDEANSTALT DT
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Filing: 1972-05-11
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Granted: 1974-11-19
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Expires: 1992-05-11
Abstract
Abstract 1. IN A PROCESS FOR THE PRODUCTION OF A PERCARBOXYLIC ACID BY REACTING HYDROGEN PEROXIDE WITH A MEMBER OF THE GROUP CONSISTING OF ALKANOIC ACIDS HAVING 2 TO 5 CARBON ATOMS AND ALKYL ESTERS THEREOF HAVING 1 TO 5 CARBON ATOMS IN THE ALKYL GROUP THE IMPROVEMENT COMPRISING CARRYING OUT THE REACTION IN THE GASEOUS PHASE AT A TEMPERATURE OF 60 TO 138* C. AT A PRESSURE FROM 20 TORR TO NORMAL PRESSURE IN THE PRESENCE OF A SOLID ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SULFATE, AN ALKALI METAL ACID SULFATE, BARIUM NITRATE, CALCIUM NITRATE, MAGNESIUM NITRATE, ALUMINUM PHOSPHATE, ALUMINUM SULFATE AND BORON PHOSPHATE.
Inventors
- 👤 O Weiberg
- 👤 W Weigert
- 👤 P Hoffmann
- 👤 G Schreyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:32
CPC Classifications
C; C07; C07C; C07C407/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A PROCESS FOR THE PRODUCTION OF A PERCARBOXYLIC ACID BY REACTING HYDROGEN PEROXIDE WITH A MEMBER OF THE GROUP CONSISTING OF ALKANOIC ACIDS HAVING 2 TO 5 CARBON ATOMS AND ALKYL ESTERS THEREOF HAVING 1 TO 5 CARBON ATOMS IN THE ALKYL GROUP THE IMPROVEMENT COMPRISING CARRYING OUT THE REACTION IN THE GASEOUS PHASE AT A TEMPERATURE OF 60 TO 138* C. AT A PRESSURE FROM 20 TORR TO NORMAL PRESSURE IN THE PRESENCE OF A SOLID ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SULFATE, AN ALKALI METAL ACID SULFATE, BARIUM NITRATE, CALCIUM NITRATE, MAGNESIUM NITRATE, ALUMINUM PHOSPHATE, ALUMINUM SULFATE AND BORON PHOSPHATE.
Claim 2
Dependent Claim
106 words
IN A PROCESS FOR THE PRODUCTION OF A PERCARBOXYLIC ACID BY REACTING HYDROGEN PEROXIDE WITH A MEMBER OF THE GROUP CONSISTING OF ALKANOIC ACIDS HAVING 2 TO 5 CARBON ATOMS AND ALKYL ESTERS THEREOF HAVING 1 TO 5 CARBON ATOMS IN THE ALKYL GROUP THE IMPROVEMENT COMPRISING CARRYING OUT THE REACTION IN THE GASEOUS PHASE AT A TEMPERATURE OF 60 TO 138* C. AT A PRESSURE FROM 20 TORR TO NORMAL PRESSURE IN THE PRESENCE OF A SOLID ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SULFATE, AN ALKALI METAL ACID SULFATE, BARIUM NITRATE, CALCIUM NITRATE, MAGNESIUM NITRATE, ALUMINUM PHOSPHATE, ALUMINUM SULFATE AND BORON PHOSPHATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |