| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-16 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D17-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D17-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-10 |
| filingDate |
2014-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b116b0026bd3ce6d74f2844ea70ed4d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1afb3fd5c4a81cbbbcf619f492ecf3fa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_290aeaa26b8bc73abeb502a79de7603e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07b4bd282eb85d941944998c68ce5906
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65a99a6f1935608daab9f372697cdb7c |
| publicationDate |
2014-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2014166901-A1 |
| titleOfInvention |
Process for the preparation of di- and polyamines of the diphenylmethane series |
| abstract |
The present invention relates to a process for the preparation of di- and polyamines of the diphenylmethane series in which, by using a coalescence auxiliary in the phase separation of the process product obtained in the scrubbing of the neutralized crude product, the fraction of water and thus also of water-soluble impurities in the organic MDA-containing phase is reduced. According to the invention, the coalescence auxiliary used is a filter bed made of coalescence fibre material. The di- and polyamines of the diphenylmethane series obtained after distillative purification of this MDA-containing organic phase are exceptionally suitable for the preparation of the corresponding isocyanates. |
| priorityDate |
2013-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |