http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111440075-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f93215aa73c0bb2f4178188641ddb0d7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-10 |
| filingDate | 2020-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e76d16b3a7c222dfe5cab085ba5485f1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad21d215831ebf6a163db8bcd9c76f1a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e468d7eb87f190c5358065dd2be00d42 |
| publicationDate | 2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111440075-A |
| titleOfInvention | A kind of preparation method of tetramethylethylenediamine |
| abstract | The invention discloses a preparation method of tetramethylethylenediamine, which comprises the following steps: adding a pyrrolidone series solvent and a composite catalyst TZOH to an autoclave, covering the autoclave, after nitrogen replacement, first introducing acetylene, and after the temperature is stable, Dimethylamine is then introduced, the temperature of the reaction kettle is raised to 70-120°C, and the temperature is kept for 3-8 hours; after the insulation is completed, it is cooled, and the residual pressure is discharged to the pyrrolidone series solvent, which is applied to the next batch, and the material in the kettle is filtered to recover the catalyst. The rectification mother liquor is the product tetramethylethylenediamine; it can realize the preparation of tetramethylethylenediamine, basically no waste water and waste residue are generated, excess raw materials, solvents and catalysts can be recycled and applied, and the element utilization rate is high, which is more than the current In the existing technology, a large amount of formaldehyde-containing wastewater or industrial waste salt is produced, and the environmental protection advantage is obvious. |
| priorityDate | 2020-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.