Patent US3102128A successfully refreshed from Google Patents.
US3102128A
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Mixed esters and process for their preparation
Assignee: Dehydag Deutsche Hydrierwerke GmbH
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Filing: 1961-07-31
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Granted: 1963-08-27
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Hennig Karl
- 👤 Lietz Gustav
- 👤 Meinhard Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/67; C07C69/675; C07C69/704; C11; C11C; C11C3/00; C11C3/04; C11C3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR THE PREPARATION OF MIXED ESTERS OF A PENTAERYTHRITE DI-FATTY ACID ESTER WHEREIN THE FATTY ACIDS HAVE 12 TO 30 CARBON ATOMS AND A CITRIC ACID DI-FATTY ALCOHOL ESTER WHEREIN THE FATTY ALCOHOLS HAVE 12 TO 30 CARBON ATOMS WHICH COMPRISES REACTING A FATTY ALCOHOL HAVING 12 TO 30 CARBON ATOMS WITH AQUEOUS CITRIC ACID TO FORM A CITRIC ACID DI-FATTY ALCOHOL ESTER, REACTING THE LATTER WITH A PENTAERYTHRITE DI-FATTY ACID ESTER WHEREIN THE FATTY ACIDS HAVE 12 TO 30 CARBON ATOMS IN A MOLAR RATIO OF ALCOHOL ESTER AND PENTAERYTHRITE DI-FATTY ACID ESTER AND RECOVERING THE LATTER.
Claim 2
Dependent Claim
100 words
A PROCESS FOR THE PREPARATION OF MIXED ESTERS OF A PENTAERYTHRITE DI-FATTY ACID ESTER WHEREIN THE FATTY ACIDS HAVE 12 TO 30 CARBON ATOMS AND A CITRIC ACID DI-FATTY ALCOHOL ESTER WHEREIN THE FATTY ALCOHOLS HAVE 12 TO 30 CARBON ATOMS WHICH COMPRISES REACTING A FATTY ALCOHOL HAVING 12 TO 30 CARBON ATOMS WITH AQUEOUS CITRIC ACID TO FORM A CITRIC ACID DI-FATTY ALCOHOL ESTER, REACTING THE LATTER WITH A PENTAERYTHRITE DI-FATTY ACID ESTER WHEREIN THE FATTY ACIDS HAVE 12 TO 30 CARBON ATOMS IN A MOLAR RATIO OF ALCOHOL ESTER AND PENTAERYTHRITE DI-FATTY ACID ESTER AND RECOVERING THE LATTER.
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |