US2744926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of acrylonitrile
Assignee: Monsanto Chemicals Ltd
•
Filing: 1951-10-22
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Granted: 1956-05-08
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Expires: 1971-10-22
Abstract
No abstract record available.
Inventors
- 👤 Russell E Koons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:12
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/12; Y; Y10; Y10S; Y10S203/00; Y10S203/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A METHOD OF PREPARING ACRYLONITRILE WHEREIN ACETYLENE AND HYDROGEN CYANIDE ARE REACTED TOGETHER IN THE PRESENCE OF A LIQUID CUPROUS CHLORIDE COMPLEX AS CATALYST, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY RECIRCULATING SAID LIQUID CUPROUS CHLORIDE CATALYST THROUGH THE REACTION ZONE FOR SAID REACTANTS COUNTERCURRENT TO THE FLOW OF ACETYLENE THROUGH SAID ZONE, WITH SAID CATALYST BEING REINTRODUCED TO SAID REACTION ZONE IN THE FORM OF A LIQUID SPRAY DURING THE COURSE OF RECIRCULATION.
Claim 2
Dependent Claim
73 words
IN A METHOD OF PREPARING ACRYLONITRILE WHEREIN ACETYLENE AND HYDROGEN CYANIDE ARE REACTED TOGETHER IN THE PRESENCE OF A LIQUID CUPROUS CHLORIDE COMPLEX AS CATALYST, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY RECIRCULATING SAID LIQUID CUPROUS CHLORIDE CATALYST THROUGH THE REACTION ZONE FOR SAID REACTANTS COUNTERCURRENT TO THE FLOW OF ACETYLENE THROUGH SAID ZONE, WITH SAID CATALYST BEING REINTRODUCED TO SAID REACTION ZONE IN THE FORM OF A LIQUID SPRAY DURING THE COURSE OF RECIRCULATION.
References Cited (Backward Citations)
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Cited
US2385327A
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US2476771A
Cited
GB593851A
Cited
GB636034A
Cited
US2561787A
Cited
US2642454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |