GB1207060A - Process of removing hydrolyzed polyacrylonitrile from an aqueous mixture - Google Patents
Process of removing hydrolyzed polyacrylonitrile from an aqueous mixtureInfo
- Publication number
- GB1207060A GB1207060A GB3266/68A GB326668A GB1207060A GB 1207060 A GB1207060 A GB 1207060A GB 3266/68 A GB3266/68 A GB 3266/68A GB 326668 A GB326668 A GB 326668A GB 1207060 A GB1207060 A GB 1207060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrolysed polyacrylonitrile
- acrylonitrile
- interface
- polyacrylonitrile
- aqueous mixture
- 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
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
- C07C253/34—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B3/00—Electrolytic production of organic compounds
- C25B3/20—Processes
- C25B3/29—Coupling reactions
- C25B3/295—Coupling reactions hydrodimerisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,207,060. Electrochemical dimerization of acrylonitrile. MONSANTO CO. 22 Jan., 1968 [30 Jan., 1967], No. 3266/68. Heading C2C. [Also in Division C7] A process of removing hydrolysed polyacrylonitrile from an aqueous mixture consisting essentially of a quaternary ammonium salt, adiponitrile, acrylonitrile and hydrolysed polyacrylonitrile, is characterized by maintaining the mixture at a temperature up to 45 C. and for at least an hour (e.g. in a decanter) to form a water phase and an organic phase, the phases being separated by an interface, and withdrawing a portion of the interface as the hydrolysed polyacrylonitrile. This process is primarily suitable for improving the efficiency of the electrolytic dimerization of acrylonitrile to adiponitrile by removing the hydrolysed polyacrylonitrile by-product which if present will foul the cathode. The portion of the interface removed may be filtered to remove the hydrolysed polyacrylonitrile and the filtrate may then be passed back into the water phase. The preferred temperature of the mixture in the decanter is from 20 C. to 35 C., the desired pH from 2À5 to 7À5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61824867A | 1967-01-30 | 1967-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1207060A true GB1207060A (en) | 1970-09-30 |
Family
ID=24476927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3266/68A Expired GB1207060A (en) | 1967-01-30 | 1968-01-22 | Process of removing hydrolyzed polyacrylonitrile from an aqueous mixture |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT287669B (en) |
| BE (1) | BE710094A (en) |
| CH (1) | CH489476A (en) |
| DE (1) | DE1693171A1 (en) |
| FR (1) | FR1566314A (en) |
| GB (1) | GB1207060A (en) |
| IL (1) | IL29389A (en) |
| LU (1) | LU55339A1 (en) |
| NL (1) | NL6801294A (en) |
| SE (1) | SE319165B (en) |
-
1968
- 1968-01-22 GB GB3266/68A patent/GB1207060A/en not_active Expired
- 1968-01-24 LU LU55339D patent/LU55339A1/xx unknown
- 1968-01-29 SE SE1169/68A patent/SE319165B/xx unknown
- 1968-01-29 IL IL29389A patent/IL29389A/en unknown
- 1968-01-29 NL NL6801294A patent/NL6801294A/xx unknown
- 1968-01-30 FR FR1566314D patent/FR1566314A/fr not_active Expired
- 1968-01-30 CH CH136968A patent/CH489476A/en not_active IP Right Cessation
- 1968-01-30 AT AT93068A patent/AT287669B/en not_active IP Right Cessation
- 1968-01-30 DE DE19681693171 patent/DE1693171A1/en active Pending
- 1968-01-30 BE BE710094D patent/BE710094A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE710094A (en) | 1968-07-30 |
| DE1693171A1 (en) | 1971-09-30 |
| IL29389A (en) | 1971-05-26 |
| AT287669B (en) | 1971-02-10 |
| NL6801294A (en) | 1968-07-31 |
| LU55339A1 (en) | 1968-08-30 |
| CH489476A (en) | 1970-04-30 |
| FR1566314A (en) | 1969-05-09 |
| SE319165B (en) | 1970-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |