US2563815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and separation of a pentachlorophenol
Assignee: Pennsylvania Salt Manufacturing Co
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Filing: 1948-02-21
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Granted: 1951-08-14
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Expires: 1968-02-21
Abstract
No abstract record available.
Inventors
- 👤 Everett A Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:33
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C37/02; C07C37/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN THE PROCESS FOR PRODUCTION OF PENTACHLOROPHENOL OR ITS SALTS THAT INVOLVES HYDROLYSIS OF HEXACHLOROBENZENE, THE IMPROVEMENT THAT COMPRISES INCORPORATING WITH THE HYDROLYSIS REACTION PRODUCT, IN THE FORM OF ITS ALKALI METAL SALT, AT LEAST THE VOLUME OF WATER NEEDED TO DISSOLVE THE WATER-SOLUBLE PORTION OF THIS MATERIAL, AND ADDING A SUFFICIENT AMOUNT OF INORGANIC SALT HAVING A WATER-SOLUBILITY AT LEAST AS GREAT AS THAT OF SODIUM CHLORIDE TO FORM A SOLUTION AT LEAST HALF SATURATED WITH RESPECT TO THE INORGANIC SALT, MAINTAINING THE PH OF THE RESULTING MIXTURE ON THE ALKALINE SIDE, AND SEPARATING THE HIGH QUALITY ALKALI METAL PENTACHLOROPHENATE THAT PRECIPITATES IN THIS MIXTURE.
Claim 2
Dependent Claim
106 words
IN THE PROCESS FOR PRODUCTION OF PENTACHLOROPHENOL OR ITS SALTS THAT INVOLVES HYDROLYSIS OF HEXACHLOROBENZENE, THE IMPROVEMENT THAT COMPRISES INCORPORATING WITH THE HYDROLYSIS REACTION PRODUCT, IN THE FORM OF ITS ALKALI METAL SALT, AT LEAST THE VOLUME OF WATER NEEDED TO DISSOLVE THE WATER-SOLUBLE PORTION OF THIS MATERIAL, AND ADDING A SUFFICIENT AMOUNT OF INORGANIC SALT HAVING A WATER-SOLUBILITY AT LEAST AS GREAT AS THAT OF SODIUM CHLORIDE TO FORM A SOLUTION AT LEAST HALF SATURATED WITH RESPECT TO THE INORGANIC SALT, MAINTAINING THE PH OF THE RESULTING MIXTURE ON THE ALKALINE SIDE, AND SEPARATING THE HIGH QUALITY ALKALI METAL PENTACHLOROPHENATE THAT PRECIPITATES IN THIS MIXTURE.
References Cited (Backward Citations)
US2107650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |