US2997493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing straight chain hexitol fatty esters
Assignee: Procter and Gamble Co
•
Filing: 1959-09-29
•
Granted: 1961-08-22
•
Expires: 1979-09-29
Abstract
No abstract record available.
Inventors
- 👤 Wilson F Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:11
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/03; C11; C11C; C11C3/00; C11C3/04; Y; Y10; Y10S; Y10S516/00; Y10S516/905; Y10S516/917; Y10S516/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR PREPARING FATTY ESTERS OF STRAIGHT CHAIN HEXITOLS, WHICH ESTERS ARE SUBSTANTIALLY FREE FROM ANHYDRO GROUPS, COMPRISING REACTING A STRAIGHT-CHAIN HEXITOL WITH A FATTY ACID ESTER SELECTED FROM THE GROUP CONSISTING OF FATTY ACID ESTERS OF ALIPHATIC PRIMARY MONOHYDROXY ALCOHOLS AND COMPLETELY AND INCOMPLETELY ESTERIFIED FATTY ACID ESTERS OF POLYHYDRIC ALCOHOLS HAVING FROM 2 TO 6 HYDROXYL GROUPS, IN THE PRESENCE OF AN INTERESTERIFICATION CATALYST, AT A TEMPERATURE IN THE RANGE FROM ABOUT 50* TO ABOUT 150* C., AND IN THE PRESENCE OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF (1) SULFOXIDES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
99 words
A PROCESS FOR PREPARING FATTY ESTERS OF STRAIGHT CHAIN HEXITOLS, WHICH ESTERS ARE SUBSTANTIALLY FREE FROM ANHYDRO GROUPS, COMPRISING REACTING A STRAIGHT-CHAIN HEXITOL WITH A FATTY ACID ESTER SELECTED FROM THE GROUP CONSISTING OF FATTY ACID ESTERS OF ALIPHATIC PRIMARY MONOHYDROXY ALCOHOLS AND COMPLETELY AND INCOMPLETELY ESTERIFIED FATTY ACID ESTERS OF POLYHYDRIC ALCOHOLS HAVING FROM 2 TO 6 HYDROXYL GROUPS, IN THE PRESENCE OF AN INTERESTERIFICATION CATALYST, AT A TEMPERATURE IN THE RANGE FROM ABOUT 50* TO ABOUT 150* C., AND IN THE PRESENCE OF A SOLVENT SELECTED FROM THE GROUP CONSISTING OF (1) SULFOXIDES OF THE GENERAL FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |