http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-990156-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0c8514878053ed09557f9014c1602409 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-269 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-26 |
| filingDate | 1961-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b69821eb7aed5a73fcaea645de64f672 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d50a289c62b6cea26dd254e22b91830 |
| publicationDate | 1965-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-990156-A |
| titleOfInvention | Synthesis of hexafluorobenzene |
| abstract | Hexafluorobenzene is obtained by pyrolysing dichloromonofluoromethane at 500 DEG C. to 700 DEG C., cooling the products to a liquid form, deacidifying the liquid product, e.g. using an alkaline solution, and separating the hexafluorobenzene from the liquid product. The pyrolysis is desirably carried out in a heated corrosion-resistant tube for a period of 1 to 30 seconds. The tube may be packed or unpacked and constructed of a noble metal, e.g. platinum, or silica. The reaction is generally carried out at atmospheric pressure, although higher and lower pressures may be used. The reactants may be diluted with an inert gas, e.g. helium or nitrogen, and hydrogen may also be introduced into the reaction tube to minimize side reactions. The pyrolysis yields, in addition to hexafluorobenzene, trichlorofluoromethane, symmetrical dichlorodifluoroethylene, symmetrical tetrachlorodifluoroethane, pentafluorobenzene, polychloropolyfluorobenzenes and other compounds as yet unidentified but probably comprising polychloropolyfluoro - butanes, - butadienes, -hexanes and -hexadienes. The hexafluorobenzene may be isolated from the reaction products by fractional distillation or gas-liquid chromatography. Reference has been directed by the Comptroller to Specification 936,610. |
| priorityDate | 1961-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.