Patent US3123631A successfully refreshed from Google Patents.
US3123631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing esters of
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:24
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/06; C07C; C07C231/00; C07C231/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD FOR PRODUCING AN ANTHRANILIC ACID ESTER SELECTED FROM THE GROUP CONSISTING OF PHENYL ANTHRANILATE, NALKYL ANTHRANILATES, METHALLYL ANTHRANILATE, BETA PHENETHYL ANTHRANILATE, AND 2-BUTYNE-1,4-DIOL MONOANTHRANILATE, WHICH METHOD COMPRISES EFFECTING CONTACT BETWEEN SODIUM HYDROXIDE AND A SOLUTION COMPRISING APPROXIMATELY EQUIMOLECULAR PROPORTIONS OF ISATOIC ANYDRIDE AND AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PHENOL, A PRIMARY N ALKYL ALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS, METHALLYL ALCOHOL, BETA PHENETHYL ALCOHOL, AND 2-BUTYNE-1, 4DIOL, RESPECTIVELY; WARMING THE RESULTING MIXTURE TO A TEMPERATURE OF AT LEAST ABOUT 45*C., BUT NOT HIGHER THAN ABOUT 100*C.; AND THEREAFTER SEPARATING THE ANTHRANILIC ACID ESTER FROM THE REACTION MIXTURE.
Claim 2
Independent Claim
104 words
A METHOD FOR PRODUCING AN ANTHRANILIC ACID ESTER SELECTED FROM THE GROUP CONSISTING OF PHENYL ANTHRANILATE, NALKYL ANTHRANILATES, METHALLYL ANTHRANILATE, BETA PHENETHYL ANTHRANILATE, AND 2-BUTYNE-1,4-DIOL MONOANTHRANILATE, WHICH METHOD COMPRISES EFFECTING CONTACT BETWEEN SODIUM HYDROXIDE AND A SOLUTION COMPRISING APPROXIMATELY EQUIMOLECULAR PROPORTIONS OF ISATOIC ANYDRIDE AND AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PHENOL, A PRIMARY N ALKYL ALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS, METHALLYL ALCOHOL, BETA PHENETHYL ALCOHOL, AND 2-BUTYNE-1, 4DIOL, RESPECTIVELY; WARMING THE RESULTING MIXTURE TO A TEMPERATURE OF AT LEAST ABOUT 45*C., BUT NOT HIGHER THAN ABOUT 100*C.; AND THEREAFTER SEPARATING THE ANTHRANILIC ACID ESTER FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
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Cited
US2602789A
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US2716659A
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US2802838A
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US2706202A
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US2806051A
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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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |