Patent US2916514A successfully refreshed from Google Patents.
US2916514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saponification of toluic acid esters
Assignee: Hercules Powder Co
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Filing: 1957-12-31
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Granted: 1959-12-08
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles R Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:48
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR THE SAPONIFICATION OF A TOLUIC ACID LOWER ALKYL ESTER WHICH COMPRISES FORMING A MIXTURE CONTAINING AN AQUOEUS ALKALI METAL HYDROXIDE AND A TOLUIC ACID SALT SELECTED FROM THE GROUP CONSISTING OF THE SODIUM AND POTASSIUM SALTS AND MIXTURES THEREOF, IN WHICH MIXTURE THE ALKALI METAL HYDROXDE HAS CONCENTRATION OF 10-50% AND IS BY WEIGHT 40-50% IF THE WEIGHT OF THE ESTER TO BE SAPONIFIED AND THE TOLUIC ACID SALT IS BY WEIGHT 5-20% OF THE WEIGHT OF THER ESTER TO BE SAPNIFIED HEATING SAID MIXTURE, ADDING THERETO A TOLUIC ACID LOWER ALKYL ESTER, AND HEATING THE TOTAL REACTION MIXTURE SO FORMED AT A TEMPERATURE IN THE RANGE OF 80-150%C. UNTIL SAPONIFICATION IS COMPLETE.
Claim 2
Dependent Claim
116 words
A PROCESS FOR THE SAPONIFICATION OF A TOLUIC ACID LOWER ALKYL ESTER WHICH COMPRISES FORMING A MIXTURE CONTAINING AN AQUOEUS ALKALI METAL HYDROXIDE AND A TOLUIC ACID SALT SELECTED FROM THE GROUP CONSISTING OF THE SODIUM AND POTASSIUM SALTS AND MIXTURES THEREOF, IN WHICH MIXTURE THE ALKALI METAL HYDROXDE HAS CONCENTRATION OF 10-50% AND IS BY WEIGHT 40-50% IF THE WEIGHT OF THE ESTER TO BE SAPONIFIED AND THE TOLUIC ACID SALT IS BY WEIGHT 5-20% OF THE WEIGHT OF THER ESTER TO BE SAPNIFIED HEATING SAID MIXTURE, ADDING THERETO A TOLUIC ACID LOWER ALKYL ESTER, AND HEATING THE TOTAL REACTION MIXTURE SO FORMED AT A TEMPERATURE IN THE RANGE OF 80-150%C. UNTIL SAPONIFICATION IS COMPLETE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |