| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-143
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-141
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-78 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-78 |
| filingDate |
2017-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_786e33631ea9b495366dcf67220b049b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46cea4e16e53b5cf3c80df1dcf672924
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07eaf79820f248f6a940b06c4673e4ea
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d0d4e8d4bd75395ba061713930c1071
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bedcaef49c041ae0be78fbd117d25cbc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffa25ed7b227557ce1ffdb402363c44c |
| publicationDate |
2017-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2017125302-A1 |
| titleOfInvention |
Method for producing an aromatic polyamine mixture |
| abstract |
The invention relates to a method for producing an aromatic polyamine mixture that contains 4,4'-methylene diphenyl amine and higher homologues of MDA, by (i) reacting aniline with formaldehyde using an acid catalyst to form a raw-product mixture (I), (ii) neutralising the raw-product mixture (I) and separating the resulting salts; (iii) separating aniline; (iv) distilling the obtained raw-product mixture by separating (iv-1) a mixture (II) consisting of MDA isomers (II-1) having 8 to 20 wt.% 4,4'-methylene diphenyl amine and a maximum of 0.3 wt.% of secondary components (II-2), and (iv-2) a low boiling mixture consisting of at least 55 wt.% secondary components (II-2) and MDA isomers (II-1); and (v) recirculating the mixture (II). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10927066-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022248448-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020079160-A1 |
| priorityDate |
2016-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |