http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102173996-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8d1f51d0b5e95fadf7afad409701f257 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-68 |
| filingDate | 2011-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c6db258830a328748753d677a44a06ab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b81e7982c8f85a4b11e88d2add081ab6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58c0436a11cc1ba1d003c926dcea2a82 |
| publicationDate | 2013-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102173996-B |
| titleOfInvention | Preparation method of naphthyl ethylene diamine hydrochloride |
| abstract | The invention relates to a preparation method of naphthyl ethylene diamine hydrochloride. The preparation method comprises the following steps of: performing an alkylation reaction on bromonaphthalene and ethylene diamine under the action of a catalyst basic cupric carbonate to generate naphthyl ethylene diamine; purifying the reaction product by using organic solvents such as benzene, ethanol and the like; and dissolving the purified product into hydrochloric acid to generate high-purity naphthyl ethylene diamine hydrochloride. In the method, a catalyst Cu+CuO in the original process is replaced by the basic cupric carbonate. The method mainly has the advantages that: (1) the price of the basic cupric carbonate is one third lower than that of copper powder and copper oxide, so production cost is reduced; (2) the dissolubility of the basic cupric carbonate in acid is higher than that of the copper powder and the copper oxide, so catalytic effect is more excellent than that of the copper and the copper oxide, reaction time is shortened by nearly a half, reaction temperature is reduced, and energy is effectively saved; (3) the basic cupric carbonate has good catalytic effect, so yield is increased by 5 percent, the raw material ethylene diamine is saved by 25 percent, utilization ratio of the ethylene diamine is increased, and production cost is greatly reduced. |
| priorityDate | 2011-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.