http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H04134056-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9cb217f83556ce2a418344c2d485415 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C245-08 |
| filingDate | 1990-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb7fe94842b679a869136622c0766f2d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97123d7864171706b30f1d8aaf0a3002 |
| publicationDate | 1992-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H04134056-A |
| titleOfInvention | Production of dinitroazobenzene |
| abstract | PURPOSE: To obtain the title compound useful as a precursor of p- phenylenediamine in high yield by reacting readily handleable nitrogen dioxide with azobenzene in the presence of a strong acid, easily precipitating and separating a reaction product from the reaction solution. n CONSTITUTION: 1mol azobenzene is reacted with preferably 1-50 nitrogen dioxide solution in a solvent such as acetonitrile preferably at-10-100°C, especially 0-30°C in the presence of a strong acid in a molar ratio of strong acid/azobenzene of ≥5/100, a precipitated reaction product is readily separated to give the objective compound useful as a precursor of p-phenylenediamine suitable as a monomer raw material for polyamide and polyimide. Trifluoroacetic acid, methanesulfonic acid or trifluoroacetic anhydride are used as the strong acid and can be used as a reaction solvent of azobenzene and nitrogen dioxide. n COPYRIGHT: (C)1992,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114950527-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114950527-B |
| priorityDate | 1990-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.