US2655522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing monoesters of polyhydric alcohol
Assignee: Colgate Palmolive Co
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Filing: 1946-04-25
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Granted: 1953-10-13
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Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Malkemus John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/02; C11C3/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE CONTINUOUS PROCESS OF PRODUCING MONOESTERS OF DI- TRIHYDRIC ALCOHOLS WITH MONOCARBOXYLIC ACIDS HAVING AT LEAST SIX CARBON ATOMS PER MOLECULE WHICH COMPRISES CONTINUOUSLY INTRODUCING THE ALCOHOL AND ACID FREE FROM CATALYSTS INTO A REACTION ZONE IN A RATIO OF ABOUT 4 TO 10 MOLS OF ALCOHOL PER MOL OF CARBOXYLIC ACID, SUBJECTING THE MIXTURE IN THE REACTION ZONE TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 200* TO 300* C. AND A PRESSURE WHICH IS CONTROLLED AND CORRELATED WITH SAID TEMPERATURE TO KEEP THE ALCOHOL IN LIQUID PHASE, CONTINUOUSLY REMOVING LIQUID REACTION PRODUCT FROM SAID ZONE AND FLASHING OFF WATER, REPEATING THE HEATING AND FLASHING UNTIL THE SYSTEM IS SUBSTANTIALLY FREE OF UNESTERIFIED FATTY ACID AND WATER, AND CONTINUOUSLY DISTILLING OFF UNREACTED ALCOHOL FROM THE ANHYDROUS RESIDUE.
Claim 2
Dependent Claim
128 words
THE CONTINUOUS PROCESS OF PRODUCING MONOESTERS OF DI- TRIHYDRIC ALCOHOLS WITH MONOCARBOXYLIC ACIDS HAVING AT LEAST SIX CARBON ATOMS PER MOLECULE WHICH COMPRISES CONTINUOUSLY INTRODUCING THE ALCOHOL AND ACID FREE FROM CATALYSTS INTO A REACTION ZONE IN A RATIO OF ABOUT 4 TO 10 MOLS OF ALCOHOL PER MOL OF CARBOXYLIC ACID, SUBJECTING THE MIXTURE IN THE REACTION ZONE TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 200* TO 300* C. AND A PRESSURE WHICH IS CONTROLLED AND CORRELATED WITH SAID TEMPERATURE TO KEEP THE ALCOHOL IN LIQUID PHASE, CONTINUOUSLY REMOVING LIQUID REACTION PRODUCT FROM SAID ZONE AND FLASHING OFF WATER, REPEATING THE HEATING AND FLASHING UNTIL THE SYSTEM IS SUBSTANTIALLY FREE OF UNESTERIFIED FATTY ACID AND WATER, AND CONTINUOUSLY DISTILLING OFF UNREACTED ALCOHOL FROM THE ANHYDROUS RESIDUE.
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) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |