US2652410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of alpha-hydroxy acids and their estolides
Assignee: Union Oil Company of California
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Filing: 1948-10-12
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Granted: 1953-09-15
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Expires: 1968-10-12
Abstract
No abstract record available.
Inventors
- 👤 Orin D Cunningham
- 👤 Orville L Polly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/003; C11C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PROCESS FOR THE PRODUCTION OF GELLED AND PARTIALLY GELLED DERIVATIVES WHICH COMPRISES HEATING AT LEAST ONE CARBOXYLIC ACID SELECTED FROM THE CLASS CONSISTING OF ALPHA-HYDROXY ACIDS CONTAINING 5 TO 30 CARBON ATOMS PER MOLECULE AND ESTOLIDES AND DEHYROXYLATED ESTOLIDES CONTAINING 10 TO 60 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF BETWEEN 1 AND 2 STOICHIOMETRIC EQUIVALENTS OF A POLYFUNCTIONAL ORGANIC COMPOUND HAVING LESS THAN 10 CARBON ATOMS PER MOLECULE AND SELECTED FROM THE CLASS CONSISTING OF POLYHYDRIC ALCOHOLS, POLY-AMINES AND AMINO-ALCOHOLS AT A REACTION TEMPERATURE BETWEEN 100* C. AND 200* C. FOR A TIME SUFFICIENT TO LIBERATE WATER AND TO EFFECT AN INCOMPLETE REACTION OF SAID CARBOXYLIC ACID WITH SAID POLYFUNCTIONAL ORGANIC COMPOUND BUT INSUFFICIENT TO CAUSE GELATION, COOLING THE RESULTING FLUID REACTION MIXTURE AND CURING SAID REACTION MIXTURE AT A TEMPERATURE BETWEEN 75* C. AND 125* C. BUT AT A TEMPERATURE LOWER THAN SAID REACTION TEMPERATURE, FOR A TIME SUFFICIENT TO EFFECT GELATION.
Claim 2
Dependent Claim
156 words
A PROCESS FOR THE PRODUCTION OF GELLED AND PARTIALLY GELLED DERIVATIVES WHICH COMPRISES HEATING AT LEAST ONE CARBOXYLIC ACID SELECTED FROM THE CLASS CONSISTING OF ALPHA-HYDROXY ACIDS CONTAINING 5 TO 30 CARBON ATOMS PER MOLECULE AND ESTOLIDES AND DEHYROXYLATED ESTOLIDES CONTAINING 10 TO 60 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF BETWEEN 1 AND 2 STOICHIOMETRIC EQUIVALENTS OF A POLYFUNCTIONAL ORGANIC COMPOUND HAVING LESS THAN 10 CARBON ATOMS PER MOLECULE AND SELECTED FROM THE CLASS CONSISTING OF POLYHYDRIC ALCOHOLS, POLY-AMINES AND AMINO-ALCOHOLS AT A REACTION TEMPERATURE BETWEEN 100* C. AND 200* C. FOR A TIME SUFFICIENT TO LIBERATE WATER AND TO EFFECT AN INCOMPLETE REACTION OF SAID CARBOXYLIC ACID WITH SAID POLYFUNCTIONAL ORGANIC COMPOUND BUT INSUFFICIENT TO CAUSE GELATION, COOLING THE RESULTING FLUID REACTION MIXTURE AND CURING SAID REACTION MIXTURE AT A TEMPERATURE BETWEEN 75* C. AND 125* C. BUT AT A TEMPERATURE LOWER THAN SAID REACTION TEMPERATURE, FOR A TIME SUFFICIENT TO EFFECT GELATION.
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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |