US2774774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In situ epoxidation of oleic acid using formic acid
Assignee: FMC Corp
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Filing: 1954-03-26
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Granted: 1956-12-18
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Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Frank P Greenspan
- 👤 Ralph J Gall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:33
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/11; D06M7/00; D06M2200/00; D06M2200/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF EXPOXIDIZING AN ETHYLENIC UNSATURATED HIGHER FATTY ACID CONTAINING OLEIC ACID WHICH COMPRISES ADDING TO SAID ACID AN INERT ORGANIC SOLVENT AND FORMIC ACID, WARMING THE MIXTURE TO APPROXIMATELY 50* C. TO 80* C., THEN ADDING AQUEOUS HYDROGEN PEROXIDE AND MAINTAINING THE REACTION MIXTURE AT SUBSTANTIALLY 50* C. TO 80* C. FOR NOT MORE THAN ABOUT 5 HOURS, SAID FORMIC ACID BAING PRESENT TO THE EXTENT OF 0.25 TO 1.0 MOLE PER MOLE OF ETHYLENIC UNSATURATION TO BE EPOXIDIZED, AND SAID AQUEOUS HYDROGEN PEROXIDE BEING PRESENT IN AN AMOUNT TO PROVIDE APPROXIMATELY 1 MOLE OF HYDROGEN PEROXIDE PER MOLE OF ETHYLENIC UNSATURATION TO BE EPOXIDIZED.
Claim 2
Independent Claim
107 words
THE METHOD OF EXPOXIDIZING AN ETHYLENIC UNSATURATED HIGHER FATTY ACID CONTAINING OLEIC ACID WHICH COMPRISES ADDING TO SAID ACID AN INERT ORGANIC SOLVENT AND FORMIC ACID, WARMING THE MIXTURE TO APPROXIMATELY 50* C. TO 80* C., THEN ADDING AQUEOUS HYDROGEN PEROXIDE AND MAINTAINING THE REACTION MIXTURE AT SUBSTANTIALLY 50* C. TO 80* C. FOR NOT MORE THAN ABOUT 5 HOURS, SAID FORMIC ACID BAING PRESENT TO THE EXTENT OF 0.25 TO 1.0 MOLE PER MOLE OF ETHYLENIC UNSATURATION TO BE EPOXIDIZED, AND SAID AQUEOUS HYDROGEN PEROXIDE BEING PRESENT IN AN AMOUNT TO PROVIDE APPROXIMATELY 1 MOLE OF HYDROGEN PEROXIDE PER MOLE OF ETHYLENIC UNSATURATION TO BE EPOXIDIZED.
References Cited (Backward Citations)
US2567930A
Cited
US2485160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |