http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5579357-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e43b4ca6b41ce9f54c9a895d474c81a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-58 |
| filingDate | 1978-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bdc69db16541e2f87459b4ab7b97f74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5364dfb833e18dd5c01d7d33839387fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23ae00545e0bf90844f00c6c7078fec3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad55d4f96967f34e467c18361ef64f63 |
| publicationDate | 1980-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5579357-A |
| titleOfInvention | Purification of 2-cyano-4-nitroaniline |
| abstract | PURPOSE: To obtain CNA(2-cyano-4-nitroaniline) useful as an intermediate for dyes, inexpensively and in high yield, by purification of CNA comprising impurities through heat treatment with n-butanol, aqueous pyridine, etc. n CONSTITUTION: 5g of crude CNA comprising 2-cyano-6-nitroaniline and the like, for example, of 98.5% purity, having the mp(melting point) of 203W208°C, and 50g of n-butanol, for examle, in an amount of 1W20 times that of the crude CNA, are heat-treated in a 100ml flask with reflux and stirring for 30minW3hr, e.g. 1hr, at 70°C or above, preferably reflux temperature and then cooled to 35°C, to obtain the crystals of the purified CNA. Too short heating and stirring time gives low purification rate; too long time, low recovery. n COPYRIGHT: (C)1980,JPO&Japio |
| priorityDate | 1978-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.