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US3234267A
Expired / Lapsed
US
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Preparation of fluorocarbon nitriles
Assignee: Dow Chemical Co
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Filing: 1962-06-13
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Granted: 1966-02-08
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Expires: 1982-06-13
Abstract
No abstract record available.
Inventors
- 👤 James W Vogh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:05
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/01; C07C255/10; C07C253/00; C07C253/30; C07C253/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
THE METHOD OF PREPARING A FLUORONITRILE WHICH COMPRISES: MIXING A SATURATED ALIPHATIC PERFLUOROCARBON IODIDE HAVING FROM ONE TO SIX CARBON ATOMS AND FROM ONE TO FOUR IODINE ATOMS IN THE MOLECULE, EACH IODINE ATOM IN THE MOLECULE BEING ATTACHED TO A SEPARATE CARBON ATOM WHEREBY NOT MORE THAN ONE IODINE ATOM IS ATTACHED TO ANY OF THE CARBON ATOMS, WITH A CN GROUP-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF CYANOGEN, CYANOGEN IODIDE, METAL CYANIDES AND ALKALI METAL FERRICYANIDES CAPABLE OF RELEASING CN ON BEING HEATED, AND MIXTURES THEREOF, SAID CN GROUP-CONTAINING COMPOUND BEING PRESENT IN AN AMOUNT, RELATIVE TO THE SATURATED ALIPHATIC PERFLUOROCARBON IODIDE, RANGING FROM ABOUT STOICHIOMETRIC TO ABOUT A 39 PERCENT EXCESS OVER STOICHIOMETRIC, OF CN GROUP-CONTAINING COMPOUND; AND HEATING SAID MIXTURE AT AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 300 TO 500*C., AND AT AN AUTOGENOUS PRESSURE OF AT LEAST 20 ATMOSPHERES THEREBY TO CAUSE REACTION BETWEEN THE SATURATED ALIPHATIC PERFLUOROCARBON IODIDE AND THE CN GROUP-CONTAINING COMPOUND.
Claim 2
Independent Claim
162 words
THE METHOD OF PREPARING A FLUORONITRILE WHICH COMPRISES: MIXING A SATURATED ALIPHATIC PERFLUOROCARBON IODIDE HAVING FROM ONE TO SIX CARBON ATOMS AND FROM ONE TO FOUR IODINE ATOMS IN THE MOLECULE, EACH IODINE ATOM IN THE MOLECULE BEING ATTACHED TO A SEPARATE CARBON ATOM WHEREBY NOT MORE THAN ONE IODINE ATOM IS ATTACHED TO ANY OF THE CARBON ATOMS, WITH A CN GROUP-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF CYANOGEN, CYANOGEN IODIDE, METAL CYANIDES AND ALKALI METAL FERRICYANIDES CAPABLE OF RELEASING CN ON BEING HEATED, AND MIXTURES THEREOF, SAID CN GROUP-CONTAINING COMPOUND BEING PRESENT IN AN AMOUNT, RELATIVE TO THE SATURATED ALIPHATIC PERFLUOROCARBON IODIDE, RANGING FROM ABOUT STOICHIOMETRIC TO ABOUT A 39 PERCENT EXCESS OVER STOICHIOMETRIC, OF CN GROUP-CONTAINING COMPOUND; AND HEATING SAID MIXTURE AT AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 300 TO 500*C., AND AT AN AUTOGENOUS PRESSURE OF AT LEAST 20 ATMOSPHERES THEREBY TO CAUSE REACTION BETWEEN THE SATURATED ALIPHATIC PERFLUOROCARBON IODIDE AND THE CN GROUP-CONTAINING COMPOUND.
References Cited (Backward Citations)
US2939878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |