US3121109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester interchange of aliphatic dicarboxylic acid diesters using titanium polymer catalysts
Assignee: SINACLAIR RES Inc
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Filing: 1960-11-23
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Granted: 1964-02-11
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Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:47
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08G63/85; C07; C07C; C07C67/00; C07C67/03; C07F; C07F7/00; C07F7/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A METHOD OF PREPARING ESTERS, THE STEPS COMPRISING REACTING UNDER ESTER INTERCHANGE CONDITIONS A DIESTER OF AN ALIPHATIC DICARBOXYLIC ACID HAVING AN ESTER GROUP DERIVED FROM AN ALCOHOL OF UP TO 4 CARBON ATOMS, SAID ACID HAVING ABOUT 2 TO 12 CARBON ATOMS, WITH AN ALIPHATIC ALCOHOL OF 4 TO ABOUT 20 CARBON ATOMS CONTAINING AT LEAST ONE CARBON ATOM MORE THAN THE SAID ESTER GROUP OF THE DIESTER, WHILE REMOVING THE ALCOHOL FORMED IN THE REACTION, AND IN THE PRESENCE OF ABOUT 0.01 TO 5 WEIGHT PERCENT, BASED ON THE ALCOHOL AND DICARBOXYLIC ACID ESTER REACTANTS, OF A CATALYST WHICH IS A WATER-INSENSITIVE, WATER-INSOLUBLE POLYMER OBTAINED BY POLYMERIZING, WITH WATER TREATING THE CHELATED RACTION PRODUCT OF TITANIUM TETRAESTER WITH A GLYCOL OF ABOUT 2 TO 20 CARBON ATOMS IN THE MOLAR RATIO OF ABOUT 0.5 TO 4 MOLES OF GLYCOL PER MOLE OF TITANIUM TETRAESTER.
Claim 2
Dependent Claim
147 words
IN A METHOD OF PREPARING ESTERS, THE STEPS COMPRISING REACTING UNDER ESTER INTERCHANGE CONDITIONS A DIESTER OF AN ALIPHATIC DICARBOXYLIC ACID HAVING AN ESTER GROUP DERIVED FROM AN ALCOHOL OF UP TO 4 CARBON ATOMS, SAID ACID HAVING ABOUT 2 TO 12 CARBON ATOMS, WITH AN ALIPHATIC ALCOHOL OF 4 TO ABOUT 20 CARBON ATOMS CONTAINING AT LEAST ONE CARBON ATOM MORE THAN THE SAID ESTER GROUP OF THE DIESTER, WHILE REMOVING THE ALCOHOL FORMED IN THE REACTION, AND IN THE PRESENCE OF ABOUT 0.01 TO 5 WEIGHT PERCENT, BASED ON THE ALCOHOL AND DICARBOXYLIC ACID ESTER REACTANTS, OF A CATALYST WHICH IS A WATER-INSENSITIVE, WATER-INSOLUBLE POLYMER OBTAINED BY POLYMERIZING, WITH WATER TREATING THE CHELATED RACTION PRODUCT OF TITANIUM TETRAESTER WITH A GLYCOL OF ABOUT 2 TO 20 CARBON ATOMS IN THE MOLAR RATIO OF ABOUT 0.5 TO 4 MOLES OF GLYCOL PER MOLE OF TITANIUM TETRAESTER.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |