Patent US4965685A successfully refreshed from Google Patents.
Patent US3232979A successfully refreshed from Google Patents.
US3232979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing and recovering organic peroxy acids
Assignee: FMC Corp
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Filing: 1963-03-27
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Granted: 1966-02-01
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Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 John H Blumbergs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:53
CPC Classifications
C; C07; C07C; C07C407/00; C07C407/003; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN THE PROCESS OF PRODUCING A PEROXYCARBOXYLIC ACID BY REACTION OF (A) A REAGENT SELECTED FROM THE GROUP CONSISTING OF THE ACYL HALIDE AND THE ACYL ANHYDRIDE OF THE PEROXYCARBOXYLIC ACID TO BE PRODUCED, WITH (B) AN AQUEOUS ALKALI METAL PEROXIDE SOLUTION HAVING AN ACTIVE OXYGEN CONTENT OF ABOVE ABOUT 1% BY WEIGHT, IN A REACTION MEDIUM COMPRISING (C) WATER AND A TERTIARY ALCOHOL HAVING A WATER SOLUBILITY OF ABOVE ABOUT 5% BY WEIGHT, THE IMPROVEMENT WHICH COMPRISES EMPLOYING A WEIGHT RATIO OF SAID REAGENT (A) TO SAID TERTIARY ALCOHOL OF FROM ABOUT 1:2.0 TO ABOUT 1:5, A WEIGHT RATIO OF SAID REAGENT (A) TO THE TOTAL REACTION MIXTURE OF FROM ABOUT 1:8 TO ABOUT 1:15, AND EMPLOYING IN SAID AQUEOUS ALKALI METAL PEROXIDE SOLUTION, AS THE ALKALI METALS, A MIXTURE OF POTASSIUM IONS AND SODIUM IONS IN THE MOLE RATIO OF FROM ABOUT 1:1 TO ABOUT 6:1, ACIDIFYING SAID REACTION MIXTURE, AND REMOVING A TERTIARY ALCOHOL LAYER RICH IN SAID PEROXYCARBOXYLIC ACID FROM A WATER LAYER POOR IN PEROXYCARBOXYLIC ACID AND CONTAINING THE IN SITU PRODUCED INORGANIC SALTS.
Claim 2
Dependent Claim
179 words
IN THE PROCESS OF PRODUCING A PEROXYCARBOXYLIC ACID BY REACTION OF (A) A REAGENT SELECTED FROM THE GROUP CONSISTING OF THE ACYL HALIDE AND THE ACYL ANHYDRIDE OF THE PEROXYCARBOXYLIC ACID TO BE PRODUCED, WITH (B) AN AQUEOUS ALKALI METAL PEROXIDE SOLUTION HAVING AN ACTIVE OXYGEN CONTENT OF ABOVE ABOUT 1% BY WEIGHT, IN A REACTION MEDIUM COMPRISING (C) WATER AND A TERTIARY ALCOHOL HAVING A WATER SOLUBILITY OF ABOVE ABOUT 5% BY WEIGHT, THE IMPROVEMENT WHICH COMPRISES EMPLOYING A WEIGHT RATIO OF SAID REAGENT (A) TO SAID TERTIARY ALCOHOL OF FROM ABOUT 1:2.0 TO ABOUT 1:5, A WEIGHT RATIO OF SAID REAGENT (A) TO THE TOTAL REACTION MIXTURE OF FROM ABOUT 1:8 TO ABOUT 1:15, AND EMPLOYING IN SAID AQUEOUS ALKALI METAL PEROXIDE SOLUTION, AS THE ALKALI METALS, A MIXTURE OF POTASSIUM IONS AND SODIUM IONS IN THE MOLE RATIO OF FROM ABOUT 1:1 TO ABOUT 6:1, ACIDIFYING SAID REACTION MIXTURE, AND REMOVING A TERTIARY ALCOHOL LAYER RICH IN SAID PEROXYCARBOXYLIC ACID FROM A WATER LAYER POOR IN PEROXYCARBOXYLIC ACID AND CONTAINING THE IN SITU PRODUCED INORGANIC SALTS.
References Cited (Backward Citations)
FR1177466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |