Patent US2562218A successfully refreshed from Google Patents.
US2562218A
Expired / Lapsed
US
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Production of ether esters
Assignee: Baker Castor Oil Co
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Filing: 1947-07-17
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Granted: 1951-07-31
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Expires: 1967-07-17
Abstract
No abstract record available.
Inventors
- 👤 Smith Malcolm Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:35
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/04; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE PROCESS FOR THE PRODUCTION OF THE RICINOLEIC ACID ESTER OF A GLYCOL MONOETHER SELECTED FOR THE GROUP CONSISTING OF ALKYLENE AND POLALKYLENE GLYCOL MONOALKYL ETHERS AND MONOARYL ETHERS, WHICH COMPRISES REACTING SAID MONOETHER WITH CASTOR OIL CONTAINING NOT MORE THAN 0.5% OF FREE FATTY ACIDS, SAID REACTANTS BEING UTILIZED IN A MOLAR RATIO OF FROM 7 TO 1 UP TO 13 TO 1 RESPECTIVELY, UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE IN THE RANGE FROM 20* TO 35* C. AND IN THE PRESENCE OF FROM 0.01% TO 1.0% OF ALKALI METAL HYDROXIDE, BASED ON THE WEIGHT OF CASTOR OIL USED.
Claim 2
Dependent Claim
101 words
THE PROCESS FOR THE PRODUCTION OF THE RICINOLEIC ACID ESTER OF A GLYCOL MONOETHER SELECTED FOR THE GROUP CONSISTING OF ALKYLENE AND POLALKYLENE GLYCOL MONOALKYL ETHERS AND MONOARYL ETHERS, WHICH COMPRISES REACTING SAID MONOETHER WITH CASTOR OIL CONTAINING NOT MORE THAN 0.5% OF FREE FATTY ACIDS, SAID REACTANTS BEING UTILIZED IN A MOLAR RATIO OF FROM 7 TO 1 UP TO 13 TO 1 RESPECTIVELY, UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE IN THE RANGE FROM 20* TO 35* C. AND IN THE PRESENCE OF FROM 0.01% TO 1.0% OF ALKALI METAL HYDROXIDE, BASED ON THE WEIGHT OF CASTOR OIL USED.
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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |