http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-168990-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9eef6bd578af4a70226a89ea4833d3d9 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-00 |
| filingDate | 1992-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2457e0503dc4923a8fda8e031e9b19f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cae22d89a4653b115d1b62310d6d99d9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5afcfe165a1c9a9d6f56b6308a1e52f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de60ac4f2d7acec9f262d0e1daddec43 |
| publicationDate | 1996-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-168990-B1 |
| titleOfInvention | Method for the production of 2-nitro-1,4-phenylenediamine |
| abstract | Method for the preparation of 2-nitro-1,4-phenylenediamine by nitration about 65%nwith nitric acid of N, N-bisacetyl-1,4-phenylenediamine previously dissolved in concnsulfuric acid and hydrolysis of the obtained nitro derivative, characterized in thatnN, N-bisacetyl-1,4-phenylenediamine is dissolved in concentrated sulfuric acid inntemperature 0-10 ° C in a weight ratio of about 1: 9, nitrates at a temperature close to 0 ° C,nthen the post-nitration mass is diluted with water, cooled to about 0 ° C, with the additionnalkylphenol ethoxylation products and nitrogen oxide scavengers, or mixtures thereof,npreferably urea and / or sulfamic acid, and after separation the resulting pastenhydrolyzes at near boiling point with dilute sulfuric acid, anthen, after partial dilution with water, it is subjected to clarification filtration and neutralization. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101935284-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101935284-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101891632-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101891632-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101891633-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101891633-A |
| priorityDate | 1992-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.