US2696498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing (beta halo alkoxy) benzoic acid
Assignee: GAF Chemicals Corp
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Filing: 1951-02-07
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Granted: 1954-12-07
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Expires: 1971-02-07
Abstract
No abstract record available.
Inventors
- 👤 Hoch Paul Edward
- 👤 Jr George Wesley Pedlow
- 👤 Sundberg Robert Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/347; C07C51/367
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
THE METHOD OF PRODUCING (B-HALO ALKOXY) BENZOIC ACID WHICH COMPRISES REACTING AT A TERMPERATURE OF ABOUT 130* C. A HYDROXY BENZOIC ACID WITH AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE OXIDE IN A MOLAR RATIO OF ABOUT 1:2 IN AN INERT SOLVENT AND IN THE PRESENCE OF AN ALKALINE ALKYLENE OXIDE CONDENSATION CATALYST TO THEREBY PRODUCE A B HYDROXY ALKYL (B HYDROXYALKOXY) BENZOATE, SAPONFIYING THE THUS OBTAINED ESTER TO CONVERT IT TO AN ALKALI SALT OF (B-HYDROXYALKOXY) BENZOIC ACID, ACIDIFYING AT ABOUT 40* C. THE THUS FORMED SALT TO CONVERT IT TO THE CORRESPONDING ACID, MIXING THE THUS ACIDIFIED PRODUCT WITH AN INERT SOLVENT FOR THE BETA-HYDROXYALKOXY BANZOIC ACID AND DRYING THE SAME AT A TEMPERATURE BELOW 45* C. TREATING THE THUS OBTAINED (B HYDROXYALKOXY) BANZOIC ACID WITH AN EXCESS OF A HALOGENATING AGENT SELECTED FROM THE GROUP CONSISTING OF THIONYL CHLORIDE AND BROMIDE AND PHOSPHORUS PENTACHLORIDE AND BROMICE, WHEREBY THERE IS FORMED A (B HALOALKOXY) BENZOIC ACID HALIDE, AND HYDROLYZING THE THUS OBTAINED ACID CHLORIDE WHEREBY THERE IS FORMED A (B HALOALKOXY) BENZOIC ACID AND RECOVERING THE SAME.
Claim 2
Independent Claim
184 words
THE METHOD OF PRODUCING (B-HALO ALKOXY) BENZOIC ACID WHICH COMPRISES REACTING AT A TERMPERATURE OF ABOUT 130* C. A HYDROXY BENZOIC ACID WITH AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE OXIDE IN A MOLAR RATIO OF ABOUT 1:2 IN AN INERT SOLVENT AND IN THE PRESENCE OF AN ALKALINE ALKYLENE OXIDE CONDENSATION CATALYST TO THEREBY PRODUCE A B HYDROXY ALKYL (B HYDROXYALKOXY) BENZOATE, SAPONFIYING THE THUS OBTAINED ESTER TO CONVERT IT TO AN ALKALI SALT OF (B-HYDROXYALKOXY) BENZOIC ACID, ACIDIFYING AT ABOUT 40* C. THE THUS FORMED SALT TO CONVERT IT TO THE CORRESPONDING ACID, MIXING THE THUS ACIDIFIED PRODUCT WITH AN INERT SOLVENT FOR THE BETA-HYDROXYALKOXY BANZOIC ACID AND DRYING THE SAME AT A TEMPERATURE BELOW 45* C. TREATING THE THUS OBTAINED (B HYDROXYALKOXY) BANZOIC ACID WITH AN EXCESS OF A HALOGENATING AGENT SELECTED FROM THE GROUP CONSISTING OF THIONYL CHLORIDE AND BROMIDE AND PHOSPHORUS PENTACHLORIDE AND BROMICE, WHEREBY THERE IS FORMED A (B HALOALKOXY) BENZOIC ACID HALIDE, AND HYDROLYZING THE THUS OBTAINED ACID CHLORIDE WHEREBY THERE IS FORMED A (B HALOALKOXY) BENZOIC ACID AND RECOVERING THE SAME.
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) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |