http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1244836-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cfc033f059d282fcd915bc8be2ae53f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-18 |
| filingDate | 1985-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1988-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1367ecf333962c2427c63b20bcc9dc6d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4e3849742be50a52dde1f75cf324bf5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_692344507e45d72a8c0c52b705cc8936 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_559aeef129116eba81ad67a21ea9df50 |
| publicationDate | 1988-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1244836-A |
| titleOfInvention | Process for producing diphenylamines or n,n'-diphenyl- phenylenediamines |
| abstract | Abstract of the Disclosure Diphenylamines or N,N'-diphenyl-phenylenedi-amines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol. The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogen-ation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone. The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclo-hexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines. The process of this invention is an advan-tageous process for the industrial production of espe-cially the nuclearly substituted diphenylamines. |
| priorityDate | 1984-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 110.