GB1088072A - Improvements in the purification of mixtures containing acetonitriles - Google Patents
Improvements in the purification of mixtures containing acetonitrilesInfo
- Publication number
- GB1088072A GB1088072A GB472566A GB472566A GB1088072A GB 1088072 A GB1088072 A GB 1088072A GB 472566 A GB472566 A GB 472566A GB 472566 A GB472566 A GB 472566A GB 1088072 A GB1088072 A GB 1088072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crude mixture
- acetonitrile
- acrylonitrile
- ammonia
- inorganic
- 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
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
- C07C253/34—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acetonitrile is recovered from a crude mixture of acetonitrile and acrylonitrile by reacting the acrylonitrile content thereof with an inorganic or organic compound containing active hydrogen in the presence of 0.001-0.1% by weight (based on crude mixture) of sodium hydroxide, potassium hydroxide, ammonium hydroxide or ammonia, as an alkaline catalyst, neutralizing the reaction mixture and separating acetonitrile by distillation. The "active hydrogen compounds" are defined as HX, where H is a reactive hydrogen atom and X an inorganic or organic radical which will react with the C-C double bond of acrylonitrile to effect addition of HX across the bond; suitable compounds are water, which may already be present in the crude mixture, ammonia, which also acts as the catalyst, and mono- and poly-hydric alcohols which may also be present in the crude mixture, e.g. methanol, ethanol propanol or allyl alcohol. Examples are provided.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR4649A FR1431919A (en) | 1965-02-06 | 1965-02-06 | Improvements in the purification of mixtures containing acetonitrile |
| FR21570A FR88407E (en) | 1965-02-06 | 1965-06-21 | Improvements in the purification of mixtures containing acetonitrile |
| FR41006A FR89253E (en) | 1965-02-06 | 1965-12-06 | Improvements in the purification of mixtures containing acetonitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1088072A true GB1088072A (en) | 1967-10-18 |
Family
ID=27241900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB472566A Expired GB1088072A (en) | 1965-02-06 | 1966-02-03 | Improvements in the purification of mixtures containing acetonitriles |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE676043A (en) |
| DE (1) | DE1543450A1 (en) |
| FR (3) | FR1431919A (en) |
| GB (1) | GB1088072A (en) |
| LU (1) | LU50341A1 (en) |
| NL (1) | NL6601375A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3334328A1 (en) * | 1983-09-22 | 1985-04-11 | Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München | Process for destroying bound hydrocyanic acid and acrylonitrile in crude acetonitrile |
| CN105294494A (en) * | 2015-12-05 | 2016-02-03 | 山东汇海医药化工有限公司 | Ammonia separation method for synthesizing crude acetonitrile |
| WO2023122572A1 (en) * | 2021-12-20 | 2023-06-29 | Ascend Performance Materials Operations Llc | Acetonitrile separation process |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175053A (en) * | 1976-10-12 | 1979-11-20 | The Procter & Gamble Company | Base reactant |
| US4308108A (en) * | 1979-03-28 | 1981-12-29 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for purification of crude acetonitrile |
| US4287134A (en) | 1980-06-26 | 1981-09-01 | E. I. Du Pont De Nemours And Company | Purification of acetonitrile by caustic extraction |
| DE3437300A1 (en) * | 1984-10-11 | 1986-04-17 | Fritz 5882 Meinerzhagen Sträter | CONCEPT HOLDER FOR USE IN WRITING, DRAWING, SCREEN WORKPLACES AND THE LIKE |
-
1965
- 1965-02-06 FR FR4649A patent/FR1431919A/en not_active Expired
- 1965-06-21 FR FR21570A patent/FR88407E/en not_active Expired
- 1965-12-06 FR FR41006A patent/FR89253E/en not_active Expired
-
1966
- 1966-01-27 LU LU50341A patent/LU50341A1/xx unknown
- 1966-02-03 GB GB472566A patent/GB1088072A/en not_active Expired
- 1966-02-03 NL NL6601375A patent/NL6601375A/xx unknown
- 1966-02-04 BE BE676043D patent/BE676043A/xx unknown
- 1966-02-04 DE DE19661543450 patent/DE1543450A1/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3334328A1 (en) * | 1983-09-22 | 1985-04-11 | Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München | Process for destroying bound hydrocyanic acid and acrylonitrile in crude acetonitrile |
| CN105294494A (en) * | 2015-12-05 | 2016-02-03 | 山东汇海医药化工有限公司 | Ammonia separation method for synthesizing crude acetonitrile |
| CN105294494B (en) * | 2015-12-05 | 2017-12-19 | 山东汇海医药化工有限公司 | A kind of method of synthesizing acetonitrile crude product ammonia separation |
| WO2023122572A1 (en) * | 2021-12-20 | 2023-06-29 | Ascend Performance Materials Operations Llc | Acetonitrile separation process |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6601375A (en) | 1966-08-08 |
| FR88407E (en) | 1967-02-03 |
| FR89253E (en) | 1967-06-02 |
| BE676043A (en) | 1966-06-16 |
| FR1431919A (en) | 1966-03-18 |
| DE1543450A1 (en) | 1969-09-11 |
| LU50341A1 (en) | 1966-03-28 |
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