US2986577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of esters and alcohols
Assignee: Shell USA Inc
•
Filing: 1958-07-28
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Granted: 1961-05-30
•
Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 George A Kurhajec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:42
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14; C07C51/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE PROCESS FOR THE SYNTHESIS OF ESTERS OF CARBOXYLIC ACIDS WHICH COMPRISES REACTING AN UNSUBSTITUTED SATURATED ALIPHATIC ALCOHOL HAVING FROM THREE TO TWENTY-THREE CARBON ATOMS TO THE MOLECULE, IN THE LIQUID PHASE. WITH CARBON MONOXIDE IN THE PRESENCE OF CONCENTRATED SULFURIC ACID HAVING A CONCENTRATION ABOVE 90%, IN THE ABSENCE OF ADDED WATER, AT A TEMPERATURE OF FROM ABOUT -10* TO ABOUT 100*C. AT A PRESSURE OF FROM ABOUT ATMOSPHERIC TO ABOUT 1,500 P.S.I.G., SAID SULFURIC ACID BEING PRESENT IN MOLECULAR EXCESS RELATIVE TO SAID UNSUBSTITUTED SATURATED ALIPHATIC ALCOHOL, THEREAFTER REACTING THE RESULTING REACTION MIXTURE IN THE ABSENCE OF ANY SUBSTANTIAL AMOUNT OF FREE CARBON MONOXIDE WITH AN UNSUBSTITUTED ALIPHATIC ALCOHOL, AND SEPARATING A CARBOXYLIC ACID ESTER FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
122 words
THE PROCESS FOR THE SYNTHESIS OF ESTERS OF CARBOXYLIC ACIDS WHICH COMPRISES REACTING AN UNSUBSTITUTED SATURATED ALIPHATIC ALCOHOL HAVING FROM THREE TO TWENTY-THREE CARBON ATOMS TO THE MOLECULE, IN THE LIQUID PHASE. WITH CARBON MONOXIDE IN THE PRESENCE OF CONCENTRATED SULFURIC ACID HAVING A CONCENTRATION ABOVE 90%, IN THE ABSENCE OF ADDED WATER, AT A TEMPERATURE OF FROM ABOUT -10* TO ABOUT 100*C. AT A PRESSURE OF FROM ABOUT ATMOSPHERIC TO ABOUT 1,500 P.S.I.G., SAID SULFURIC ACID BEING PRESENT IN MOLECULAR EXCESS RELATIVE TO SAID UNSUBSTITUTED SATURATED ALIPHATIC ALCOHOL, THEREAFTER REACTING THE RESULTING REACTION MIXTURE IN THE ABSENCE OF ANY SUBSTANTIAL AMOUNT OF FREE CARBON MONOXIDE WITH AN UNSUBSTITUTED ALIPHATIC ALCOHOL, AND SEPARATING A CARBOXYLIC ACID ESTER FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
US2831877A
Cited
US2768968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |