http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CZ-2018651-A3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cfdb6b919bf2aeb7656f69b7f09dab07 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D223-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-462 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-143 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D223-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-14 |
| filingDate | 2018-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a2318260c48194a5d377a8175da774c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b67a4fa4eab31efb01e677901c08ea3e |
| publicationDate | 2020-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CZ-2018651-A3 |
| titleOfInvention | Method for isolation of β-caprolactam from the upper lactam phase |
| abstract | The invention relates to a process for the isolation of β-caprolactam from the upper lactam phase obtained by separation from the sulphate phase after neutralization of the reaction mixture obtained from the Beckman rearrangement of cyclohexyloxime with ammonia, to 5 to 10% by weight, then the solid phase formed during distillation is removed mechanically and the concentrated mixture thus obtained is distilled at a pressure of 0.1 to 4 kPa, removing non-volatile components. In the distillate thus obtained, the concentration of β-caprolactam is adjusted to 30 to 70% by weight by adding a solvent from the group of water, methanol, ethanol, propanol, isopropyl alcohol or a mixture of at least two of them. and the mixture thus formed is hydrogenated at a temperature of 100 to 150 ° C and a hydrogen pressure of 1 to 10 MPa in the presence of a heterogeneous supported catalyst containing at least one noble metal from the Pd, Pt, Ru group, reducing multiple bonds of the impurities present. The raffinate thus formed is rectified in a series of at least two rectification columns operating at a pressure of 0,05 to 4 kPa with an overall minimum efficiency of 10 theoretical stages of the column system, separating light fractions and heavy residues by rectification, thereby simultaneously isolating it. kap-caprolactam. |
| priorityDate | 2018-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.