http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20030013430-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S203-90 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D223-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-08 |
| filingDate | 2001-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2003-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20030013430-A |
| titleOfInvention | Method for purifying lactams |
| abstract | The present invention relates to a process for the purification of lactams obtained by cyclic hydrolysis of lactams, more particularly aminonitrile. More particularly, the present invention relates to the purification of ε-caprolactam obtained by cyclic hydrolysis of aminocapronitrile, which consists in removing ammonia from the hydrolysis reaction medium and then recovering the lactam from the medium in purified form. It is about. The recovery optionally comprises a front fraction containing a compound that is more volatile than lactam, a fraction containing lactam recovered to the desired purity, and a distillation tail containing a compound that is less volatile than lactam and lactam. The production is carried out by carrying out one or more distillations in the presence of a base. The distillation tail is treated by various methods such as evaporation in a thin layer to recover most of the caprolactam contained, and the latter is recycled in the purification method. The present invention allows the caprolactam contained in the hydrolysis medium to be recovered at a high rate while complying with the desired purity standards. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190080535-A |
| priorityDate | 2000-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.