GB746312A - Method for the purification of acrylonitrile - Google Patents
Method for the purification of acrylonitrileInfo
- Publication number
- GB746312A GB746312A GB7153/54A GB715354A GB746312A GB 746312 A GB746312 A GB 746312A GB 7153/54 A GB7153/54 A GB 7153/54A GB 715354 A GB715354 A GB 715354A GB 746312 A GB746312 A GB 746312A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylonitrile
- nitrosyl chloride
- acetylene
- polymers
- polymerization
- 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
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 238000000746 purification Methods 0.000 title 1
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 abstract 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000004157 Nitrosyl chloride Substances 0.000 abstract 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 abstract 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 abstract 2
- VPCDQGACGWYTMC-UHFFFAOYSA-N nitrosyl chloride Chemical compound ClN=O VPCDQGACGWYTMC-UHFFFAOYSA-N 0.000 abstract 2
- 235000019392 nitrosyl chloride Nutrition 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000010908 decantation Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- AUBDSFLQOBEOPX-UHFFFAOYSA-N hexa-1,5-dien-3-yne Chemical group C=CC#CC=C AUBDSFLQOBEOPX-UHFFFAOYSA-N 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- WOFDVDFSGLBFAC-UHFFFAOYSA-N lactonitrile Chemical group CC(O)C#N WOFDVDFSGLBFAC-UHFFFAOYSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 239000012265 solid product Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000013638 trimer Substances 0.000 abstract 1
- -1 trimers Natural products 0.000 abstract 1
Classifications
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Synthetic acrylonitrile containing lower polymers of acetylene (e.g. trimers, tetramers) is purified by adding nitrosyl chloride to convert the impurities into high boiling derivatives, and then distilling off the acrylonitrile. The process is preferably carried out at room temperature with constant stirring, the nitrosyl chloride being introduced below the surface of the acrylonitrile in gaseous or liquid form. The mixture is then neutralized with an alkali before distillation. Any solid products formed can be removed by decantation or filtration. A polymerization inhibitor such as hydroquinone may be added. The process serves to remove acetylene polymers such as divinylacetylene and octatrienynes and also acetaldehyde resulting from the decomposition of lactonitrile. The product is acid-free and is stable to polymerization. Examples are given of the process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR746312X | 1953-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB746312A true GB746312A (en) | 1956-03-14 |
Family
ID=9147281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7153/54A Expired GB746312A (en) | 1953-03-25 | 1954-03-11 | Method for the purification of acrylonitrile |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB746312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1205084B (en) * | 1959-02-14 | 1965-11-18 | Edison Soc | Process for the purification of crude, aqueous acrylic acid nitrile, which is produced by the reaction of acetylene with hydrocyanic acid |
-
1954
- 1954-03-11 GB GB7153/54A patent/GB746312A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1205084B (en) * | 1959-02-14 | 1965-11-18 | Edison Soc | Process for the purification of crude, aqueous acrylic acid nitrile, which is produced by the reaction of acetylene with hydrocyanic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB746312A (en) | Method for the purification of acrylonitrile | |
| GB955063A (en) | Phenoxy-phosphonitrile derivatives | |
| GB936400A (en) | Process for the manufacture of carboxylic acid-tertiary alkyl esters | |
| US2252081A (en) | Preparation of sulphonium compounds | |
| US2930782A (en) | Preparation of resins | |
| US2462221A (en) | Process for the production of acetarylamides | |
| US2417659A (en) | Method of preparing cyanueic | |
| GB820773A (en) | Process for the production of polyolefins | |
| GB1057528A (en) | Process for the manufacture of cyanoacetic acid esters | |
| US969159A (en) | Method of treating glycerin. | |
| SU521273A1 (en) | Method for separating phthalic anhydride from bottoms | |
| US2663723A (en) | Process for the preparation of dialkoxythiophosphoryl chloride | |
| US3051739A (en) | Manufacture of trimethyl phosphate | |
| US2960531A (en) | Addition of chloraryloxyacetic acid to alkenes in the presence of boron trifluoride | |
| US3203974A (en) | Purification of acetonitrile and propionitrile | |
| US3102904A (en) | 1,3-dihalo-2 acyloxy-2-phenyl propane and method of preparing same | |
| GB899641A (en) | Process for purifying acrylonitrile | |
| US2388025A (en) | alpha-chloroethyl sulphides and process of preparing the same | |
| US3363020A (en) | Decolorization of biphenyl | |
| US3038929A (en) | Esters of n-nitroso-acylaminoalkanoic acids | |
| GB906464A (en) | A cyclic process for the production of alpha olefins | |
| GB950691A (en) | Production of allyl chloride | |
| US3053879A (en) | Manufacture of trimethyl phosphate | |
| GB884612A (en) | Production of polymers | |
| GB806239A (en) | Purification of polyalkylphenols |