GB822531A - A process for the production of nitriles or dinitriles - Google Patents
A process for the production of nitriles or dinitrilesInfo
- Publication number
- GB822531A GB822531A GB20744/57A GB2074457A GB822531A GB 822531 A GB822531 A GB 822531A GB 20744/57 A GB20744/57 A GB 20744/57A GB 2074457 A GB2074457 A GB 2074457A GB 822531 A GB822531 A GB 822531A
- Authority
- GB
- United Kingdom
- Prior art keywords
- evaporated
- heat transfer
- transfer means
- liquid
- dinitriles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/22—Preparation of carboxylic acid nitriles by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Aliphatic nitriles or dinitriles are prepared from the corresponding mono- or dibasic acids or the amides by heating the starting material in liquid form on a heat transfer means to a temperature below the boiling-point, at the prevailing pressure, of the compound to be evaporated, and transferring the evaporated compound by means of a stream of ammonia gas to a reaction zone which is at 250-550 DEG C. and which contains a catalyst causing splitting off of water. The liquid starting material is used in as thin a layer as possible, e.g. by using a thin-layer evaporator as the heat transfer means. The ammonia gas may be used in admixture with water or an inert gas such as hydrogen or nitrogen, and may be at about the same temperature as the heat transfer means or up to the boiling-point of the liquid to be evaporated. Reduced pressure may be employed in the evaporation step.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH822531X | 1956-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB822531A true GB822531A (en) | 1959-10-28 |
Family
ID=4539578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20744/57A Expired GB822531A (en) | 1956-06-30 | 1957-07-01 | A process for the production of nitriles or dinitriles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB822531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3142696A (en) * | 1959-04-20 | 1964-07-28 | Toyo Koatsu Ind Inc | Process of producing aliphatic dinitrile from fatty acids |
| CN107325022A (en) * | 2017-08-09 | 2017-11-07 | 无锡殷达尼龙有限公司 | A kind of preparation method of Long carbon chain cyano group acid |
-
1957
- 1957-07-01 GB GB20744/57A patent/GB822531A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3142696A (en) * | 1959-04-20 | 1964-07-28 | Toyo Koatsu Ind Inc | Process of producing aliphatic dinitrile from fatty acids |
| CN107325022A (en) * | 2017-08-09 | 2017-11-07 | 无锡殷达尼龙有限公司 | A kind of preparation method of Long carbon chain cyano group acid |
| CN107325022B (en) * | 2017-08-09 | 2021-06-18 | 无锡殷达尼龙有限公司 | Preparation method of long-carbon-chain cyano acid |
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