http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-980700966-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B63-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-08 |
| filingDate | 1995-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1998-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-980700966-A |
| titleOfInvention | Process for Continuously Cleaning Raw Caprolactam Made From 6-Amino Capronitrile |
| abstract | In the washing of raw caprolactam by hydration, subsequent treatment in an acid medium and final distillation in an algytic medium, (a) converting 6-aminocapronitrile to raw caprolactam by reacting with water; (b) removing difficult and easily boiling components from the raw caprolactam obtained from step (a); (c) treating the raw caph obtained from step (b) with hydrogen in the presence of a hydration catalyst and, optionally, a solvent, at a temperature of 50 to 150° C. and a pressure of 1.5 to 250 bar to obtain a mixture A, (dl) taking mixture A on an ion exchanger comprising acid end groups at a temperature of 30 to 80° C. and a pressure of 1 to 5 bar to obtain mixture B1, or (d2) any solvent prior to addition of sulfuric acid and distillation of mixture A in the presence of sulfuric acid to obtain mixture B2; (e) mixture B1 or B2 with a basen n n Distillation in the presence of to obtain pure caprolactam. |
| priorityDate | 1995-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 16.