US3370083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for the preparation of nitriles
Assignee: Montedison SpA
•
Filing: 1963-08-13
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Granted: 1968-02-20
•
Expires: 1983-08-13
Abstract
No abstract record available.
Inventors
- 👤 Ferlazzo Natale
- 👤 Caporali Giorgio
- 👤 Giordano Nicola
- 👤 Marinozzi Paolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/31; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B01J2523/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR PREPARING AN UNSATURATED NITRILE SELECTED FROM THE GROUP OF ACRYLONITRILE AND METHACRYLONITRILE FROM AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTYLENE RESPECTIVELY, COMPRISING CONTACTING IN THE GASEOUS PHASE AT A TEMPERATURE IN THE RANGE OF 300* TO 600*C. AND AT A CONTACT TIME OF 0.05-20 SECONDS, A MIXTURE CONSISTING OF SAID OLEFIN, 0.5 TO 2.5 MOLES OF ELEMENTAL OXYGEN PER MOLE OF OLEFIN, 0.3 TO 2 MOLES OF AMMONIA PER MOLE OF OLEFIN AND AN INERT GASEOUS DILUENT WITH A CATALYTIC SYSTEM CONSISTING OF AT LEAST ONE HETEROPOLYCOMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
98 words
A PROCESS FOR PREPARING AN UNSATURATED NITRILE SELECTED FROM THE GROUP OF ACRYLONITRILE AND METHACRYLONITRILE FROM AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTYLENE RESPECTIVELY, COMPRISING CONTACTING IN THE GASEOUS PHASE AT A TEMPERATURE IN THE RANGE OF 300* TO 600*C. AND AT A CONTACT TIME OF 0.05-20 SECONDS, A MIXTURE CONSISTING OF SAID OLEFIN, 0.5 TO 2.5 MOLES OF ELEMENTAL OXYGEN PER MOLE OF OLEFIN, 0.3 TO 2 MOLES OF AMMONIA PER MOLE OF OLEFIN AND AN INERT GASEOUS DILUENT WITH A CATALYTIC SYSTEM CONSISTING OF AT LEAST ONE HETEROPOLYCOMPOUND HAVING THE GENERAL FORMULA:
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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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |