http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100592011-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-12 |
| filingDate | 1999-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2006-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100592011-B1 |
| titleOfInvention | Improved method of preparing hexamethylenediamine |
| abstract | The present invention relates to a catalyst based on the elemental iron as a catalytically active component and a method for catalytic hydrogenation of adiponitrile with hexamethylenediamine at high temperature and high pressure in the presence of ammonia as solvent. The present invention comprises: a) the sum of the concentration of 6-aminocapronitrile and the concentration of adiponitrile at a pressure of from 70 to 220 ° C. and from 100 to 400 bar in the presence of ammonia as a catalyst and a solvent based on an iron element as the catalytically active component. The adiponitrile is hydrogenated until it is in the range of 1 to 50% by weight based on the hydrogenated mixture except for this ammonia to obtain a mixture comprising adiponitrile, 6-aminocapronitrile, hexamethylenediamine and a high boiling point material. B) removing ammonia from the hydrogenation effluent, c) recovering hexamethylenediamine from the remaining mixture, d) separating 6-aminocapronitrile and adiponitrile, respectively or together, from the high boiling point material, And e) returning 6-aminocapronitrile, adiponitrile or mixtures thereof to step a) above. .n n n Adiponitrile, 6-aminocapronitrile, hexamethylenediamine, iron catalyst |
| priorityDate | 1998-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.