US3193480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adiponitrile process
Assignee: Monsanto Co
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Filing: 1963-02-01
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Granted: 1965-07-06
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Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Manuel M Baizer
- 👤 Charles R Campbell
- 👤 Robert H Fariss
- 👤 Johnson Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:00
CPC Classifications
C; C07; C07C; C07C255/00; C25; C25B; C25B3/00; C25B3/01; C25B3/09; C25B3/20; C25B3/29; C25B3/295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF ELECTROLYZING ACRYLONITRILE TO OBTAIN AND RECOVER ADIPONITRILE WHICH COMPRISES PASSING ELECTRIC CURRENT THROUGH A CATHOLYTE IN CONTACT WITH A CATHODE, THE CATHOLYTE CONSISTING ESSENTIALLY OF WATER, ACRYLONITRILE AND AND ELECTROLYTE SALT WHICH HAS A DISCHARGE POTENTIAL MORE NEGATIVE THAN THAT OF ACRYLONITRILE AND BEING SEPARATED BY A DIAPHRAGM FROM THE ANOLYTE WHICH IS AN AQUEOUS ACID SOLUTION HAVING AN ACID CONCENTRATION OF 0.05 TO 20% BY WEIGHT, AND OF STRENGTH MATCHED TO THE CURRENT DENSITY TO PROVIDE SUFFICIENT HYDROGEN ION TO NEUTRALIZE HYDROXYL IONS GENERATED AT THE CATHODE, AND RECOVERING ADIPONITRILE FROM THE CATHOLYTE.
Claim 2
Independent Claim
97 words
THE METHOD OF ELECTROLYZING ACRYLONITRILE TO OBTAIN AND RECOVER ADIPONITRILE WHICH COMPRISES PASSING ELECTRIC CURRENT THROUGH A CATHOLYTE IN CONTACT WITH A CATHODE, THE CATHOLYTE CONSISTING ESSENTIALLY OF WATER, ACRYLONITRILE AND AND ELECTROLYTE SALT WHICH HAS A DISCHARGE POTENTIAL MORE NEGATIVE THAN THAT OF ACRYLONITRILE AND BEING SEPARATED BY A DIAPHRAGM FROM THE ANOLYTE WHICH IS AN AQUEOUS ACID SOLUTION HAVING AN ACID CONCENTRATION OF 0.05 TO 20% BY WEIGHT, AND OF STRENGTH MATCHED TO THE CURRENT DENSITY TO PROVIDE SUFFICIENT HYDROGEN ION TO NEUTRALIZE HYDROXYL IONS GENERATED AT THE CATHODE, AND RECOVERING ADIPONITRILE FROM THE CATHOLYTE.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |