| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1625d5e41b96a13d54aff52255bddfdd |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-50 |
| filingDate |
1990-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f54d8a7678db8a27605a74c6d6e78711
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d66f202b9f63e24dcde93c020ccdc62d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4982506cf94033dfbb0f948cc5268805
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b39b211a01a00ffb2bd96c8f0cfe80f0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73b595fe985b3af28ead8c15be183644 |
| publicationDate |
1992-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
HU-205599-B |
| titleOfInvention |
Process for producing benzidine |
| abstract |
Hydrazobenzene- or hydrazobenzene extracted by toluene from a reaction mixt. resulting from a reaction between nitrobenzene aq. NaOH, a phase transfer catalyst and Pd activated hydrogen redn.-is isomerised to benzidine-sulphate in a mixt. of toluene and aq. sulphuric acid. - Opt. this cpd. is extracted and benzidine base is liberated with heating in a system of H2O and toluene. Benzidine is crystallised out from the toluene phase by cooling. (-pp) |
| priorityDate |
1990-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |