Patent Profile
| Patent No: | RU2291854 [Russian Federation] | Application No: | RU20050123397 |
| Title: | Method of production of 2,4,4,6-tetrabromine-2,5-cyclohexadienon | ||
| Issue Date: | 20-01-2007 | File Date: | 23-12-2002 |
| Inventor(s): | Bedekar Ashutosh Vasant; Gadde Ramachandraiah; Ghosh Pushpito Kumar | ||
| IPC Classification: | C07C 45/51 | ||
| Abstract: | FIELD: chemical industry; new method of production of 2,4,4,6-tetrabromine-2,5-cyclohexadienon. ^ SUBSTANCE: the invention is pertaining to the new method of production of 2,4,4,6-tetrabromine-2,5-cyclohexadienon, which one has the wide application as the semi-finished product in chemistry of organic synthesis, for example at production of the linear poly(phenylene oxides). The method consists in production of 2,4,4,6-tetrabromine-2,5-cyclohexadienon in one container and provides for interaction of phenol with the brominating substance consisting of the mixture of the alkaline metal /alkaline earth metal bromide and the alkaline metal /alkaline earth metal bromate soluted in the deionized water at presence of the acid, extraction, washing and drying of the deposit with production of 2,4,4,6-tetrabromine-2,5-cyclohexadienon. The technical result of the invention is simplification of the production process due to usage of phenol as the original substance and the combination of the alkaline metal /alkaline earth metal bromides and the alkaline metal /alkaline earth metal bromates. ^ EFFECT: the invention ensures simplification of the production process due to usage of phenol as the original substance and the combination of the alkaline metal /alkaline earth metal bromides and the alkaline metal /alkaline earth metal bromates. ^ 15 cl, 4 ex | ||
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:91-278- 2569496 Ext. 6000, 6010
:https://www.csmcri.res.in
Industrial Applications
Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes]