US2671107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic dehydrogenation of aliphatic nitriles
Assignee: Sinclair Refining Co
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Filing: 1951-06-26
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Granted: 1954-03-02
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Expires: 1971-06-26
Abstract
No abstract record available.
Inventors
- 👤 La Vern H Beckberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:35
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN THE CATALYTIC DEHYDROGENATION OF ALIPHATIC NITRILES TO PRODUCE CORRESPONDING UNSATURATED NITRILES BY CONTACTING AN ALIPHATIC NITRILE WITH A SOLID DEHYDROGENATION CATALYST IN A REACTION ZONE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 950* F. TO ABOUT 1300* F. AND RECOVERING THE UNSATURATED NITRILE PRODUCT FROM THE REACTION EFFLUENT, THE IMPROVEMENT WHICH COMPRISES MIXING A MATERIAL CONSISTING ESSENTIALLY OF HYDROGEN CYANIDE WITH THE ALIPHATIC NITRILE FEED, THE MOLAR RATIO OF HYDROGEN CYANIDE TO NITRILE BEING AT LEAST 1:10.
Claim 2
Dependent Claim
79 words
IN THE CATALYTIC DEHYDROGENATION OF ALIPHATIC NITRILES TO PRODUCE CORRESPONDING UNSATURATED NITRILES BY CONTACTING AN ALIPHATIC NITRILE WITH A SOLID DEHYDROGENATION CATALYST IN A REACTION ZONE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 950* F. TO ABOUT 1300* F. AND RECOVERING THE UNSATURATED NITRILE PRODUCT FROM THE REACTION EFFLUENT, THE IMPROVEMENT WHICH COMPRISES MIXING A MATERIAL CONSISTING ESSENTIALLY OF HYDROGEN CYANIDE WITH THE ALIPHATIC NITRILE FEED, THE MOLAR RATIO OF HYDROGEN CYANIDE TO NITRILE BEING AT LEAST 1:10.
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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |