Patent US2871248A successfully refreshed from Google Patents.
US2871248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glycol diesters
Assignee: American Oil Co
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Filing: 1955-10-31
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Granted: 1959-01-27
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Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Earl V Kirkland
- 👤 Irvin H Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:17
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/28; C10M2207/283; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AS COMPOSITIONS OF MATTER, GLYCOL DIESTERS WHICH ARE PRODUCED BY ESTERIFYING A GLYCOL SELECTED FROM THE GROUP CONSISTING OF TRIETHYLENE GLYCOL, DIETHYLENE GLYCOL, ETHYLENE GLYCOL, AND MIXTURES THEREOF WITH A MIXTURE OF STRAIGHT AND BRANCHED CHAIN ALIPHATIC MONO-CARBOXYLIC ACIDS CONTAINING BETWEEN ABOUT 10% AND 60% OF STRAIGHT CHAIN ACIDS AND BETWEEN ABOUT 90% AND 40% OF BRANCHED CHAIN ACIDS WHICH MIXTURE OF ACIDS IS PRODUCED IN THE HYDROGENATION OF CARBON MONOXIDE IN THE PRESENCE OF AN IRONTYPE CATALYST AT A TEMPERATURE BETWEEN ABOUT 450* AND 750*F. AND A PRESSURE BETWEEN ABOUT 100 AND 700 P.S.I.G., SAID MIXTURE OF STRAIGHT CHAIN AND BRANCHED CHAIN ACIDS BEING SELECTED FROM THOSE ACIDS WHICH CONTAIN FROM 7 TO 20 CARBON ATOMS PER MOLECULE, AND SAID MIXTURE OF ACIDS HAVING BEEN HYDROGENATED TO REDUCE ITS UNSATURATION PRIOR TO ESTERIFICATION WITH SAID GLYCOL.
Claim 2
Dependent Claim
137 words
AS COMPOSITIONS OF MATTER, GLYCOL DIESTERS WHICH ARE PRODUCED BY ESTERIFYING A GLYCOL SELECTED FROM THE GROUP CONSISTING OF TRIETHYLENE GLYCOL, DIETHYLENE GLYCOL, ETHYLENE GLYCOL, AND MIXTURES THEREOF WITH A MIXTURE OF STRAIGHT AND BRANCHED CHAIN ALIPHATIC MONO-CARBOXYLIC ACIDS CONTAINING BETWEEN ABOUT 10% AND 60% OF STRAIGHT CHAIN ACIDS AND BETWEEN ABOUT 90% AND 40% OF BRANCHED CHAIN ACIDS WHICH MIXTURE OF ACIDS IS PRODUCED IN THE HYDROGENATION OF CARBON MONOXIDE IN THE PRESENCE OF AN IRONTYPE CATALYST AT A TEMPERATURE BETWEEN ABOUT 450* AND 750*F. AND A PRESSURE BETWEEN ABOUT 100 AND 700 P.S.I.G., SAID MIXTURE OF STRAIGHT CHAIN AND BRANCHED CHAIN ACIDS BEING SELECTED FROM THOSE ACIDS WHICH CONTAIN FROM 7 TO 20 CARBON ATOMS PER MOLECULE, AND SAID MIXTURE OF ACIDS HAVING BEEN HYDROGENATED TO REDUCE ITS UNSATURATION PRIOR TO ESTERIFICATION WITH SAID GLYCOL.
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |