US3636066A
Expired / Lapsed
US
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Process for the manufacture of acrylonitrile by ammoxidation
Assignee: Ube Corp
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Filing: 1969-03-05
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Granted: 1972-01-18
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Expires: 1989-03-05
Abstract
Abstract IN THE PROCESS OF MANUFACTURING ACRYLONITRILE WHEREIN PROPYLENE, AMMONIA AND OXYGEN ARE CONTACTED WITH A SOLID OXIDIZING CATALYST IN THE VAPOR PHASE AT A TEMPERATURE IN THE RANGE OF 400-600*C., THE IMPROVED METHOD WHICH COMPRISES USING AS SAID SOLID CATALYST THAT WHICH CONSISTS ESSENTIALLY OF (A) A BISMUTH ANTIMONATE IN WHICH THE ATOMIC RATIO OF BUSMUTH TO ANTIMONY IS 1:1, AND (B) AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, URANIUM, MOLYBDENUM, VANADIUM, TIN AND IRON; THE WEIGHT RATIO OF SAID BUSMUTH ANTIMONATE TO SAID OXIDE BEING IN THE RANGE OF 95:5-50:50.
Inventors
- 👤 Keisho Yamada
- 👤 Shigeki Nagai
- 👤 Kyoji Odan
- 👤 Yasuo Nakamura
- 👤 Mikio Hidaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J23/00; B01J23/16; B01J23/18; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8437; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |