http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105358524-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-0266 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/C07C263-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-78 |
| filingDate | 2014-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105358524-B |
| titleOfInvention | The method for preparing the diamines and polyamines of diphenylmethane series |
| abstract | The method that offer of the present invention prepares the diamines and polyamines of diphenylmethane series, this method is by making aniline and formaldehyde be reacted in the presence of no acid catalyst into aminal and water, separation aqueous phase and the diamines and polyamines that the aminal organic phase is further processed into diphenylmethane series, wherein reducing the water content in the organic phase containing aminal using coalescing aid in the phase separation for passing through the process products obtained in being reacted in aminal and therefore decreasing water-solubility impurity content.The diamines and polyamines of diphenylmethane series obtained by being processed further after the aminal phase by acid catalyzed rearrangement and post processing are extremely suitable to be used to prepare corresponding isocyanates. |
| priorityDate | 2013-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.