| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-10 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-53
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-78 |
| filingDate |
2009-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d501d84c413a0a4f2316872f3fc3147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1afb3fd5c4a81cbbbcf619f492ecf3fa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81ebf0bba9fa6c3efd7f110fcab7a216
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff42491a70eaca187b33a94f50040d43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_290aeaa26b8bc73abeb502a79de7603e |
| publicationDate |
2009-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2009227677-A |
| titleOfInvention |
Process for producing diphenylmethane series diamines and polyamines |
| abstract |
Disclosed is a novel process for improving the coloration of diphenylmethane series diamine / polyamine mixtures produced or the coloration of isocyanates and polyurethanes produced from this mixture. In a process for preparing diphenylmethane series diamines and polyamines by reacting aniline with formaldehyde in the presence of an acid catalyst, one or more anilines used contain at least one carbonyl group. Containing less than 0.5% by weight, in total, of the compound, or one or more compounds formed by reacting the compound containing at least one carbonyl group with aniline, relative to the total weight of aniline A process for producing diphenylmethane series diamines and polyamines. [Selection figure] None |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016520038-A |
| priorityDate |
2008-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |