US3023183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esterification
Assignee: Cuban-American Sugar Co
•
Filing: 1959-06-29
•
Granted: 1962-02-27
•
Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Douglas C Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:52
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/06; C07F; C07F5/00; C07F5/02; C07F5/04; C08; C08G; C08G63/00; C08G63/78; C08G63/81; C08G63/82; C08G63/84; C09; C09F; C09F1/00; C09F1/04; C11; C11C; C11C3/00; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
IN THE ESTERIFACTION OF A CARBOXYLIX ACID OF THE FORMULA R-COOH WITH AN ALCOHOL OF THE FORMULA R''OH HAVING A BOILING POINT HIGHER THAN THAT OF WATER TO FORM AN ESTER OF THE FORMULA R-COOR'', EACH OF SAID GRAOUPS R AND R'' BEING OF THE CLASS CONSISTING OF HYDROCARBON AND OXYGEN-CONTAINING HYDROCARBON, SAID OXYGEN BEING IN NO FORM OTHER THAN HYDROXYL, OXO, ETHER AND CARBOXYL GROUPS, SAID GROUP R'' CONTAINING NO REACTIVE GROUP THAT IS MORE REACTIVE WITH RESPECT TO ACID, ESTER AND SULFOXIDE THAN HYDROXYL GROUPS, SAID GROUP R CONTAINING NO REACTIVE GROUP THAT IS MORE REACTIVE WITH RESPECT OF ALCOHOL, ESTER AND SULFOXIDE THAN THE R-CO GROUP, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID ESTERIFICATION IN THE PRESENCE OF A LOW MOLECULAR WEIGHT SULFOXIDE SOLVENT, WHILE CONTROLLING THE TEMPERATURE TO PROMOTE SAID ESTERIFICATION REACTING, SAID SULFOXIDE BEING A MEMBER OF THE GROUP CONSISTING OF (1) ALKYL SULFOXIDES HAVING THE STRUCTURE
Claim 2
Dependent Claim
152 words
IN THE ESTERIFACTION OF A CARBOXYLIX ACID OF THE FORMULA R-COOH WITH AN ALCOHOL OF THE FORMULA R''OH HAVING A BOILING POINT HIGHER THAN THAT OF WATER TO FORM AN ESTER OF THE FORMULA R-COOR'', EACH OF SAID GRAOUPS R AND R'' BEING OF THE CLASS CONSISTING OF HYDROCARBON AND OXYGEN-CONTAINING HYDROCARBON, SAID OXYGEN BEING IN NO FORM OTHER THAN HYDROXYL, OXO, ETHER AND CARBOXYL GROUPS, SAID GROUP R'' CONTAINING NO REACTIVE GROUP THAT IS MORE REACTIVE WITH RESPECT TO ACID, ESTER AND SULFOXIDE THAN HYDROXYL GROUPS, SAID GROUP R CONTAINING NO REACTIVE GROUP THAT IS MORE REACTIVE WITH RESPECT OF ALCOHOL, ESTER AND SULFOXIDE THAN THE R-CO GROUP, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID ESTERIFICATION IN THE PRESENCE OF A LOW MOLECULAR WEIGHT SULFOXIDE SOLVENT, WHILE CONTROLLING THE TEMPERATURE TO PROMOTE SAID ESTERIFICATION REACTING, SAID SULFOXIDE BEING A MEMBER OF THE GROUP CONSISTING OF (1) ALKYL SULFOXIDES HAVING THE STRUCTURE
Claim 3
Dependent Claim
12 words
THE METHOD OF CLAIM 14 WHEREIN TSHE ALCOHOL IS A POLYHYDRIC ALCOHOL.
Claim 4
Dependent Claim
28 words
THE METHOD OF CLAIM 17 WHEREIN THE ALCOHOL IS ETHYLENE GLOYCOL, THE ACID IS PHTHALIC ACID, THE ESTER IS A POLYESTER RESIN AND THE SULFOXIDE HAS THE STRUCTURE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |