US2902500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of mono-esters
Assignee: Baker Castor Oil Co
•
Filing: 1958-05-08
•
Granted: 1959-09-01
•
Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Smith Malcolm Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; Y; Y10; Y10S; Y10S260/00; Y10S260/37; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE PROCESS FOR THE PRODUCTION OF THE MONO-ESTERS OF A HYDROXY FATTY ACID HAVING FROM ABOUT 11 TO ABOUT 22 CARBON ATOMS PER MOLECULE WITH A POLYHYDRIC ALCOHOL CONTAINING A MAXIMUM OF ONE PRIMARY HYDROXYL GROUP AND AT LEAST ONE SECONDARY HYDROXY GROUP, HYDROXYL GROUPS IN THE LATTER CATEGORY UNDERGOING SUBSTANTIALLY NO ESTERIFICATION IN SAID PROCESS, WHICH COMPRISES REACTING SAID POLYHYDRIC ALCOHOL WITH A TRI-GLYCERYL ESTER OF SAID HYDROXY FATTY ACID CONTAINING NOT MORE THAN 0.8% OF FREE FATTY ACIDS, SAID TRI-GLYCERYL ESTER BEING LIQUID AT THE REACTION TEMPERATURE, 4.5 TO 9 PARTS OF SAID POLYHDRIC ALCOHOL BEING USED TO EACH PART OF TRI-GLYCERYL ESTER UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE IN THE RANGE FROM 20* TO 50* C. AND IN THE PRESENCE OF FROM 0.01% TO 1.0% OF AN ALCOHOLYSIS CATALYST CHOSEN FROM THE GROUP COMPRISING ALKALI METAL HYDROXIDES AND ALCOHOLATES, BASED ON THE WEIGHT OF TRI-GLYCERYL ESTER USED.
Claim 2
Dependent Claim
151 words
THE PROCESS FOR THE PRODUCTION OF THE MONO-ESTERS OF A HYDROXY FATTY ACID HAVING FROM ABOUT 11 TO ABOUT 22 CARBON ATOMS PER MOLECULE WITH A POLYHYDRIC ALCOHOL CONTAINING A MAXIMUM OF ONE PRIMARY HYDROXYL GROUP AND AT LEAST ONE SECONDARY HYDROXY GROUP, HYDROXYL GROUPS IN THE LATTER CATEGORY UNDERGOING SUBSTANTIALLY NO ESTERIFICATION IN SAID PROCESS, WHICH COMPRISES REACTING SAID POLYHYDRIC ALCOHOL WITH A TRI-GLYCERYL ESTER OF SAID HYDROXY FATTY ACID CONTAINING NOT MORE THAN 0.8% OF FREE FATTY ACIDS, SAID TRI-GLYCERYL ESTER BEING LIQUID AT THE REACTION TEMPERATURE, 4.5 TO 9 PARTS OF SAID POLYHDRIC ALCOHOL BEING USED TO EACH PART OF TRI-GLYCERYL ESTER UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE IN THE RANGE FROM 20* TO 50* C. AND IN THE PRESENCE OF FROM 0.01% TO 1.0% OF AN ALCOHOLYSIS CATALYST CHOSEN FROM THE GROUP COMPRISING ALKALI METAL HYDROXIDES AND ALCOHOLATES, BASED ON THE WEIGHT OF TRI-GLYCERYL ESTER USED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |