http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1816118-A4
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_67ddb426ec27b4566aa864c9a6ed9d1c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-54 |
| filingDate | 2004-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5f7eb4bca18992da68f286e4efdd96f6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af130d618dd18cd1272e280aa6a431fe |
| publicationDate | 2008-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1816118-A4 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF 2,2'-BIS (TRIFLUOROMETHYL) -4,4'-DIAMINOBIPHENYL |
| abstract | A process for producing 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl, which is useful as a material for polyimide resins, etc. It comprises using a water-immiscible organic solvent, such as toluene, as a reaction solvent to conduct the benzidine rearrangement of 3,3'-bis(trifluoromethyl)hydrazobenzene in the presence of an inorganic acid such as an aqueous sulfuric acid solution or concentrated hydrochloric acid. Thus, the rearrangement yield is heightened. The 3,3'-bis(trifluoromethyl)hydrazobenzene can be synthesized by the reduction of m-nitrobenzotrifluoride. |
| priorityDate | 2004-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.