http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2330836-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fa12583b23057a64d1fe6b3301e2724b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E02D3-103 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-08 |
| filingDate | 2004-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2008-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a6b8861bb36ca3a06b11186c281714e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_405af732a3b546dad060c0e1ebb482cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ea0948963a90a31e5ebb14eef3e543e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26619ef82e6cd00b093a880d6684a666 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e2218453b6b91fa0c7e89aa4e9a52be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_564e09af1fdd8a463044163b84a13e1d |
| publicationDate | 2008-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2330836-C2 |
| titleOfInvention | Method of two-stage obtaining of dinitrotoluene |
| abstract | FIELD: chemistry. n SUBSTANCE: invention concerns obtaining dinitrotoluene by two-stage nitration of toluene, where: a) at the first stage toluene undergoes adiabatic reaction with nitrating acid, so that at least 90% is involved in the reaction and max. 70% of toluene transforms into dinitritoluene; then organic phase containing mononitrotoluene and water acid phase containing sulfuric acid are immediately separated, water acid phase is concentrated by instantaneous evaporation with pressure release, and the concentrated sulfuric acid obtained is recycled in the first stage reaction and/or in the second stage concentration; and b) at the second stage the organic phase containing mononitrotoluene left from the first stage undergoes complete isothermal reaction with a nitrating acid mix; then organic phase and water acid phase containing sulfuric acid are immediately separated, water acid phase is concentrated by evaporation in vacuum, and the concentrated sulfuric acid obtained is recycled in the first and/or second stage reaction. n EFFECT: improved method of obtaining dinitrotoluene. n 3 dwg, 3 tbl, 3 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2712699-C1 |
| priorityDate | 2003-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.