PROCESS FOR THE CONTINUOUS PREPARATION OF MONO-OR DI-(TRICHLOROMETHYL)-BENZENES

Continuous preparation of mono- or di-(trichloromethy)-benzenes or of mono- or di-(trichloromethyl)-benzenes substituted in the benzene ring by halogen a?oms from the corresponding mono- or dimethylbenzenes and chlorine in several steps with radiation by means of rays of high energy, by reacting mon...

Full description

Saved in:
Bibliographic Details
Main Authors LENZMANN, HEINRICH, LADEMANN, RUDOLF, LANDAUER, FRANZ, SCHWIERSCH, WOLFRAM, SCHMIEDEL, KLAUS
Format Patent
LanguageEnglish
French
Published 27.11.1979
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:Continuous preparation of mono- or di-(trichloromethy)-benzenes or of mono- or di-(trichloromethyl)-benzenes substituted in the benzene ring by halogen a?oms from the corresponding mono- or dimethylbenzenes and chlorine in several steps with radiation by means of rays of high energy, by reacting mono- or dimethylbenzene with chlorine in 4 to 14 steps, at a temperature in the range of from 20 to 130.degree.C, whereby chlorine is introduced into the second step and the following steps, the resulting waste gas is introduced into step 1 and chlorine contained in the waste gas is reacted in reactor 1 with fresh mono- and dimethylbenzene. A preferred embodiment for carrying out the process is the reaction in a reactor arrangement in cascade form, wherein the number of steps corresponds to the number of reactors and wherein as reactors circulation reactors are used. The mono- and di-(trichloromethyl)-benzenes are valuable intermediates for the preparation of pesticides, textile auxiliaries and dyestuffs.
Bibliography:Application Number: CA19760256028