| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-49 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-51
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-10 |
| filingDate |
2006-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f177c99bd9f41a2cf7829cd2038bc2d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05d7930161a1f3f03349f2d438c78a90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de90f4ab102258767e209aa5324b1cbf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14fb9b108b68ce8aea36e0aebb19667a |
| publicationDate |
2007-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-200722408-A |
| titleOfInvention |
Process for the preparation of toluenediamine |
| abstract |
Toluenediamine is produced and separated from by-products of the reaction by: (a) hydrogenating dinitrotoluene in the presence of a catalyst, (b) separating the catalyst, water and optionally solvent from the hydrogenation reaction mixture to give crude toluenediamine, and (c) separating by distillation the crude toluenediamine in a separating wall column into at least four product streams P1, P2, P3 and P4. The product stream P1 is a stream containing low boilers. The product stream P2 is a stream containing o-toluenediamine. The product stream P3 is a stream containing m-toluenediamine. The product stream P4 is a stream containing high boilers and m-toluenediamine. |
| priorityDate |
2005-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |