| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C205-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-06 |
| filingDate |
1995-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1997-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94412b04eff7ba2f2beae31944ac27c3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9513a94977513e2e818ee2fa6ebca027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a46a26ca0272d8f51734e42bfce5095
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65b3ecc94ff619956040123f0a045fd2 |
| publicationDate |
1997-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5679873-A |
| titleOfInvention |
Process for the production of dinitrotoluene |
| abstract |
Dinitrotoluene is produced in a two-stage process from toluene and nitric acid in the presence of sulfuric acid under adiabatic conditions in the presence of nitrating acids made up of specified components. The reaction product of the first phase is separated into an acid phase and an organic phase containing the mononitrotoluene. Some water is removed from the acid phase, nitric acid is added and the resultant mixture is recycled. The organic phase containing mononitrotoluene is further nitrated to produce the dinitrotoluene. This nitration mixture is also separated into an acid phase and an organic phase. The acid phase is treated to remove some water, nitric acid is added and the resultant acid mixture is recycled. Dinitrotoluene is recovered from the organic phase. This process is advantageous in that dilute nitric acid may be used and the heat of the nitration reaction is utilized. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104016867-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7851661-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7495136-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004267061-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7227147-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008086017-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005075407-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1445246-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008242900-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6984762-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104016867-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104387388-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6528690-B2 |
| priorityDate |
1994-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |