Patent DE693070C successfully refreshed from Google Patents.
US3395162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of amides
Assignee: Lever Brothers Co
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Filing: 1963-08-26
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Granted: 1968-07-30
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Lamberti Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:23
CPC Classifications
C; C11; C11C; C11C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD FOR THE PRODUCTION OF FATTY ACID DIHYDROXYALKYL AMIDES WHICH COMPRISES REACTING A HIGHER FATTY ACID ESTER OF GLYCEROL CONTAINING FATTY ACIDS OF ABOUT 8 TO 18 CARBON ATOMS AND MIXTURES THEREOF AND A SECONDARY DIHYDROXY LOWER ALKYL AMINE AT TEMPERATURES OF ABOUT 65*C. TO ABOUT 100*C. IN THE PRESENCE OF AT LEAST ABOUT 0.02 MOLE OF AN ALKALI METAL HYDROXIDE CATALYST PER MOLE OF ESTER GROUP, WITH AN UPPER LIMIT OF 0.2 MOLE OF CATALYST PER MOLE OF ESTER GROUP IN ADDITION TO THE AMOUNT REQUIRED TO NEUTRALIZE ANY FREE FATTY ACID PRESENT IN THE GLYCEROL ESTER, THE TOTAL MOLE PROPORTIONS OF AMINE TO ESTER GROUP BEING AT LEAST 1.1 TO 1.0 RESPECTIVELY, THE REACTION CONDITIONS BEING MAINTAINED SO THAT AT ALL TIMES THERE EXISTS IN THE REACTION MEDIUM AN EXCESS OF AMINE RELATIVE TO THE FATTY ACID GLYCEROL ESTER.
Claim 2
Independent Claim
142 words
A METHOD FOR THE PRODUCTION OF FATTY ACID DIHYDROXYALKYL AMIDES WHICH COMPRISES REACTING A HIGHER FATTY ACID ESTER OF GLYCEROL CONTAINING FATTY ACIDS OF ABOUT 8 TO 18 CARBON ATOMS AND MIXTURES THEREOF AND A SECONDARY DIHYDROXY LOWER ALKYL AMINE AT TEMPERATURES OF ABOUT 65*C. TO ABOUT 100*C. IN THE PRESENCE OF AT LEAST ABOUT 0.02 MOLE OF AN ALKALI METAL HYDROXIDE CATALYST PER MOLE OF ESTER GROUP, WITH AN UPPER LIMIT OF 0.2 MOLE OF CATALYST PER MOLE OF ESTER GROUP IN ADDITION TO THE AMOUNT REQUIRED TO NEUTRALIZE ANY FREE FATTY ACID PRESENT IN THE GLYCEROL ESTER, THE TOTAL MOLE PROPORTIONS OF AMINE TO ESTER GROUP BEING AT LEAST 1.1 TO 1.0 RESPECTIVELY, THE REACTION CONDITIONS BEING MAINTAINED SO THAT AT ALL TIMES THERE EXISTS IN THE REACTION MEDIUM AN EXCESS OF AMINE RELATIVE TO THE FATTY ACID GLYCEROL ESTER.
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) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |