http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2153492-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D223-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-08 |
| filingDate | 1995-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ed229e7f21fa46a483ab78ee1c314c2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_139d00a9529e92860cfedb4a957681e9 |
| publicationDate | 2000-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2153492-C2 |
| titleOfInvention | Caprolactam production process |
| abstract | FIELD: industrial organic synthesis. SUBSTANCE: caprolactam is prepared by liquid-phase interaction of 6- aminocapronitrile with water at elevated temperature. Catalyst-free reaction mixture is heated in reactor A to form mixture I consisting largely of water, caprolactam, and high-boiling fraction. Mixture I is converted into mixture II by removing water to leave largely caprolactam and high-boiling fraction. Mixture II is then separated by distillation into indicated constituents. Separated high-boiling fraction is processed according to three versions: fraction is returned into reactor A; fraction is treated in reactor B; or fraction is processed in reactor C under reduced pressure in presence of base. Reaction mixtures from reactors B and C are distilled to give additional amount of caprolactam according to the same scheme, which is used to treat reaction mixture from reactor A. Process in reactor A is carried out at 200-370 C and pressure 0.1 to 50 MPa with excess water 10 to 150 mol per 1 mol of nitrile. EFFECT: simplified technology due to lack of catalyst separation and regeneration stage, and minimized formation of by-products. 6 cl, 4 ex |
| priorityDate | 1994-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.