http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109456200-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-27 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-48 |
| filingDate | 2018-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109456200-B |
| titleOfInvention | Preparation method of m-xylylenediamine |
| abstract | The invention provides a method for preparing m-xylylenediamine. In this process, metaxylene is converted to isophthalonitrile by ammoxidation. The resulting isophthalonitrile is extracted with N-alkylpyrazole. The m-phthalonitrile solution obtained by extraction is subjected to resin decarboxylation acid and then enters a hydrogenation reactor for hydrogenation reaction to obtain m-xylylenediamine reaction solution. Finally, the m-xylylenediamine with high purity (> 99.9%) is obtained by rectification and separation. The method has the characteristics of simple reaction flow, low energy consumption, simple operation, high m-xylylenediamine yield, high m-xylylenediamine purity and the like. |
| priorityDate | 2018-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 79.