http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111499518-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-8946 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-0033 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J32-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-84 |
| filingDate | 2020-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2023-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2023-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111499518-B |
| titleOfInvention | A method for preparing pentamethyldiethylenetriamine |
| abstract | The invention discloses a method for preparing pentamethyldiethylenetriamine. The method comprises: adding diethylenetriamine, a solvent, an auxiliary agent tetramethylammonium hydroxide, and a palladium-loaded magnetic catalyst into a reaction kettle, and using different Reaction conditions Dropping formaldehyde to carry out two-stage reaction can effectively reduce the generation of N,N-dimethylpiperazine by-products and improve the yield of pentamethyldiethylenetriamine. In addition, the use of magnetic catalysts can effectively achieve solid-liquid separation under the action of an external magnetic field, which is beneficial to the filtration of the reaction solution and reduces the loss of the catalyst, and is not easy to affect the post-treatment process. The pentamethyldiethylenetriamine product obtained by this method high purity. |
| priorityDate | 2020-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.