http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2332372-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_37b6263b75377d4dae467974a791d1f2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-38 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-51 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 1999-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2008-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e80e9bf0a993babc614de579843c30b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e4cbca17d55c51f7126bdaad32c980e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f74f759a51d947a0998799a77c3d4cd7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a5faf1f4d52d3a29cc5d1ff4201a36f |
| publicationDate | 2008-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2332372-C |
| titleOfInvention | Process for preparing 4-aminodiphenylamines |
| abstract | A process for preparing an optionally substituted 4-aminodiphenylamine comprising reacting an optionally substituted aniline and an optionally substituted nitrobenzene in the presence of water and a base while controlling the water content so as to ensure a molar ratio of water to the base charged of not less than about 4:1 at the start of the coupling reaction and not less than about 0.6:1 at the end of the coupling reaction to produce 4-nitrodiphenylamine and/or 4-nitrosodiphenylamine and/or salts thereof. The coupling reaction is followed by a hydrogenation reaction where the coupling reaction product is hydrogenated in the presence of a hydrogenation catalyst and added water so as to ensure a molar ratio of total water to base of at least about 4:1 at the end of hydrogenation. Aqueous and organic phases are obtained and the optionally substituted 4-aminodiphenylamine recovered from the organic phase. |
| priorityDate | 1998-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 116.