| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-84 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-84 |
| filingDate |
2005-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c207df580a6db8855a679e9ffdc1f2a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cc821bb15fc88fbf915478e3958886fd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5188a4a269189a0b334b4dfe53e819e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_806c075bd70fc9fde439f1055850cdb9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06a06208c5f5b90790192411a19a73de
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23c3548e6295962c9d9da3bbb8a482ac
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6700cab2645a38e364d54004bc4e13d2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_872007423bd16471c4389b4cb93762f5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_215370edebcf6ff42ad1654c40f8580d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f9e95a653bf39bf05de3f8d07fc93a6 |
| publicationDate |
2007-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1706370-B1 |
| titleOfInvention |
Method for the distillative recovery of toluylenediamine |
| abstract |
The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region ( 2 ), a lower combined column region ( 3 ), a feed section ( 4 ) having a rectifying section ( 5 ) and stripping section ( 6 ), and also a withdrawal section ( 7 ) having a rectifying section ( 9 ) and stripping section ( 8 ), which comprises the following steps: a. feeding the reactant stream ( 13 ) into the feed section ( 4 ) of the dividing wall column ( 1 ); b. drawing off a low boiler fraction via the top of the column ( 11 ); c. drawing off TDA via a side draw ( 14 ) in the withdrawal section ( 7 ) of the dividing wall column ( 1 ); d. drawing off a low boiler fraction via the bottom of the column ( 12 ). |
| priorityDate |
2004-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |