http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101785129-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-50 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-84 |
| filingDate | 2010-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101785129-B1 |
| titleOfInvention | Two-stage process for cost-effective deposition of homogeneous catalysts in mda synthesis |
| abstract | The present invention provides a process for preparing diphenylmethanediamine comprising the steps of: (a) reacting with aniline and formaldehyde in the presence of an acid, (b) neutralizing a major portion of the acid with an aqueous ammonia and / or ammonia solution, (c) separating the reaction mixture derived from step (b) into an aqueous phase and an organic phase, (d) neutralizing the remaining portion of the acid present in the organic phase with an aqueous alkali metal hydroxide solution, (e) separating the reaction mixture derived from step (d) into an aqueous phase and an organic phase, (f) treating the aqueous phase obtained in step (c) or optionally a combined aqueous phase derived from steps (c) and (e) with one or more oxides or hydroxides of an alkaline earth metal, (g) removing ammonia obtained in step (f) / RTI > |
| priorityDate | 2009-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.