US2778847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing acrylonitrile
Assignee: Asahi Kasei Corp
•
Filing: 1953-08-21
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Granted: 1957-01-22
•
Expires: 1973-08-21
Abstract
No abstract record available.
Inventors
- 👤 Fujisaki Yoshisato
- 👤 Takemoto Tsuyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:05
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR THE PREPARATION OF ACRYLONITRILE, WHICH COMPRISES INTRODUCING HYDROGEN CYANIDE AND ACETYLENE INTO AN AQUEOUS SOLUTION CONTAINING DISSOLVED THEREIN, AS CATALYST, (A) A CUPROUS HALIDE SELECTED FROM THE GROUP CONSISTING OF CUPROUS CHLORIDE, CUPROUS BROMIDE AND CUPROUS IODIDE AND (B) CUPROUS CYANIDE, THE QUANTITY OF CUPROUS CYANIDE BEING 1 TO 13% BY WEIGHT OF THE CUPROUS HALIDE, WHEREBY REACTION BETWEEN THE HYDROGEN CYANIDE AND ACETYLENE TAKES PLACE WITH FORMATION OF ACRYLONITRILE.
Claim 2
Dependent Claim
73 words
A PROCESS FOR THE PREPARATION OF ACRYLONITRILE, WHICH COMPRISES INTRODUCING HYDROGEN CYANIDE AND ACETYLENE INTO AN AQUEOUS SOLUTION CONTAINING DISSOLVED THEREIN, AS CATALYST, (A) A CUPROUS HALIDE SELECTED FROM THE GROUP CONSISTING OF CUPROUS CHLORIDE, CUPROUS BROMIDE AND CUPROUS IODIDE AND (B) CUPROUS CYANIDE, THE QUANTITY OF CUPROUS CYANIDE BEING 1 TO 13% BY WEIGHT OF THE CUPROUS HALIDE, WHEREBY REACTION BETWEEN THE HYDROGEN CYANIDE AND ACETYLENE TAKES PLACE WITH FORMATION OF ACRYLONITRILE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
US2688632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |