US3106570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making esters
Assignee: United States Steel Corp
•
Filing: 1961-03-02
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Granted: 1963-10-08
•
Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 John J Jaruzelski
- 👤 Chester S Sheppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:44
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/803; C07C; C07C67/00; C07C67/08; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/88; C07D307/00; C07D307/77; C07D307/91; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/38; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A METHOD OF MAKING AN ESTER COMPRISING REFLUXING WITH REMOVAL OF THE WATER OF ESTERIFICATION A PHENOL CONTAINING SIX TO ABOUT TWENTY CARBON ATOMS AND FREE FROM SUBSTITUENTS CONTAINING AN ACTIVE HYDROGEN ATOM AND A CARBOXYLIC ACID CONTAINING TWO TO ABOUT TWENTY CARBON ATOMS AND FREE FROM SUBSTITUENTS CONTAINING AN ACTIVE HYDROGEN ATOM IN THE PRESENCE OF A CATALYTIC QUANTITY NOT EXCEEDING ABOUT FOUR WEIGHT PERCENT OF SAID ESTER PRODUCT OF A CATALYST CHOSEN FROM THE GROUP CONSISTING OF ALUMINUM ISOPROPOXIDE, ANTIMONY TRICHLORIDE, ANTIMONY TRIOXIDE, BISMUTH TRICHLORIDE, PHOSPHORUS TRICHLORIDE AND TITANIUM TETRABUTOXIDE AND RECOVERING THE ESTER.
Claim 2
Independent Claim
96 words
A METHOD OF MAKING AN ESTER COMPRISING REFLUXING WITH REMOVAL OF THE WATER OF ESTERIFICATION A PHENOL CONTAINING SIX TO ABOUT TWENTY CARBON ATOMS AND FREE FROM SUBSTITUENTS CONTAINING AN ACTIVE HYDROGEN ATOM AND A CARBOXYLIC ACID CONTAINING TWO TO ABOUT TWENTY CARBON ATOMS AND FREE FROM SUBSTITUENTS CONTAINING AN ACTIVE HYDROGEN ATOM IN THE PRESENCE OF A CATALYTIC QUANTITY NOT EXCEEDING ABOUT FOUR WEIGHT PERCENT OF SAID ESTER PRODUCT OF A CATALYST CHOSEN FROM THE GROUP CONSISTING OF ALUMINUM ISOPROPOXIDE, ANTIMONY TRICHLORIDE, ANTIMONY TRIOXIDE, BISMUTH TRICHLORIDE, PHOSPHORUS TRICHLORIDE AND TITANIUM TETRABUTOXIDE AND RECOVERING THE ESTER.
Claim 3
Independent Claim
47 words
A METHOD OF MAKING O-CRESYL OLEATE COMPRISING REFLUXING IN THE PRESENCE OF A WATER-AZEOTROPING AGENT SUBSTANTIALLY STOICHIOMETRIC QUANTITIES OF OLEIC ACID AND O-CRESOL WITH A CATALYTIC QUANTITY OF TITANIUM TETRABUTOXIDE NOT EXCEEDING ABOUT FOUR WEIGHT PERCENT OF THE ESTER, REMOVING WATER OF ESTERIFICATION AND RECOVERING THE ESTER.
Claim 4
Independent Claim
47 words
A METHOD OF MAKING O-CRESYL OLEATE COMPRISING REFLUXING IN THE PRESENCE OF A WATER-AZEOTROPING AGENT SUBSTANTIALLY STOICHIOMETRIC QUANTITIES OF OLEIC ACID AND O-CRESOL WITH A CATALYTIC QUANTITY OF TITANIUM TETRABUTOXIDE NOT EXCEEDING ABOUT FOUR WEIGHT PERCENT OF THE ESTER, REMOVING WATER OF ESTERIFICATION AND RECOVERING THE ESTER.
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |