Patent US3342847A successfully refreshed from Google Patents.
US3342847A
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Preparation of unsaturated nitriles
Assignee: EIDP Inc
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Filing: 1965-06-14
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Granted: 1967-09-19
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Kruse Jurgen Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:10
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/02; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/70; B01J23/76; B01J23/84; B01J23/847; B01J23/8474; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1815; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN THE PROCESS FOR THE PREPARATION OF UNSATURATED NITRILES BY THE CATALYTIC REACTION OF NITRIC OXIDE WITH UNU SATURATED ORGANIC COMPOUNDS BEARING A METHYL GROUP BONDED TO A CARBON ATOMS WHICH, IN TURN, IS BONDED TO ANOTHER CARBON ATOMS BY A DOUBLE BOND AT A TEMPERATURE OF ABOUT 350*C. TO 600*C., THE IMPROVEMENT WHICH COMPRISES USING A CATALYST CONSISTING ESSENTIALLY OF A CATALYST OBTAINED BY CALCINING AT A TEMPERATURE OF ABOUT 450*C. TO 1000*C. BISMUTH OXIDE WITH AT LEAST ONE OF TITANIUM OXIDES, NIOBIUM OXIDES ORR PHOSPHORUS OXIDES, THE ATOMIC RATIO OF BISMUTH TO PHOSPHORUS IN SAID CATALYST BEING GREATER THAN 1/1, SAID CATALYST CONTAINING LESS THAN ABOUT 50% BY WEIGHT OF FREE PURE BISMUTH OXIDE.
Claim 2
Dependent Claim
116 words
IN THE PROCESS FOR THE PREPARATION OF UNSATURATED NITRILES BY THE CATALYTIC REACTION OF NITRIC OXIDE WITH UNU SATURATED ORGANIC COMPOUNDS BEARING A METHYL GROUP BONDED TO A CARBON ATOMS WHICH, IN TURN, IS BONDED TO ANOTHER CARBON ATOMS BY A DOUBLE BOND AT A TEMPERATURE OF ABOUT 350*C. TO 600*C., THE IMPROVEMENT WHICH COMPRISES USING A CATALYST CONSISTING ESSENTIALLY OF A CATALYST OBTAINED BY CALCINING AT A TEMPERATURE OF ABOUT 450*C. TO 1000*C. BISMUTH OXIDE WITH AT LEAST ONE OF TITANIUM OXIDES, NIOBIUM OXIDES ORR PHOSPHORUS OXIDES, THE ATOMIC RATIO OF BISMUTH TO PHOSPHORUS IN SAID CATALYST BEING GREATER THAN 1/1, SAID CATALYST CONTAINING LESS THAN ABOUT 50% BY WEIGHT OF FREE PURE BISMUTH OXIDE.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |