Patent US2947779A successfully refreshed from Google Patents.
US2947779A
Expired / Lapsed
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Process for the esterification of unsatureated acids
Assignee: Standard Oil Co
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Filing: 1957-12-31
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Granted: 1960-08-02
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr James D Idol
- 👤 Robert W Foreman
- 👤 Veatch Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:47
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR THE PRODUCTION OF UNSATURATED ESTERS WHICH COMPRISES THE STEP OF CONTACTING A GASEOUS MIXTURE COMPRISING AN ALKYL ALCOHOL CONTAING FROM 1 TO 8 CARBON ATOMS AND AN X,B-UNSATURATED CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS WITH SILICA GEL AT A TEMPERATURE IN THE RANGE BETWEEN 212*F. AND 750*F. IN THE PRESENCE OF ADDED WATER IN AN AMOUNT SUFFICIENT TO PROVIDE A WATERACID RATIO IN SAID MIXTURE IN THE RANGE OF 1:1 TO 8:1, SAID GASEOUS MIXTURE HAVING A MOLAL RATIO OF ALCOHOL TO ACID OF AT LEAST 1.
Claim 2
Dependent Claim
96 words
A PROCESS FOR THE PRODUCTION OF UNSATURATED ESTERS WHICH COMPRISES THE STEP OF CONTACTING A GASEOUS MIXTURE COMPRISING AN ALKYL ALCOHOL CONTAING FROM 1 TO 8 CARBON ATOMS AND AN X,B-UNSATURATED CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS WITH SILICA GEL AT A TEMPERATURE IN THE RANGE BETWEEN 212*F. AND 750*F. IN THE PRESENCE OF ADDED WATER IN AN AMOUNT SUFFICIENT TO PROVIDE A WATERACID RATIO IN SAID MIXTURE IN THE RANGE OF 1:1 TO 8:1, SAID GASEOUS MIXTURE HAVING A MOLAL RATIO OF ALCOHOL TO ACID OF AT LEAST 1.
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |