Process for the continuous preparation of mono- or di-(trichloro

Details Process for the continuous preparation of mono- or di-(trichloro Process for the continuous preparation of mono- or di-(trichloro

1976-07-01

1977-11-01

Sebastian, Leland A.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

B01J 110

Patent

active

040564550

ABSTRACT:
Continuous preparation of mono- or di-(trichloromethyl)-benzenes or of mono- or di-(trichloromethyl)-benzenes substituted in the benzene ring by halogen atoms from the corresponding mono- or dimethylbenzenes and chlorine in several steps with radiation by means of rays of high energy, is effected by reacting mono- or dimethylbenzene with chlorine in 4 to 14 steps, at a temperature in the range of from 20.degree. 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 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.

REFERENCES:
patent: 2132361 (1938-10-01), Osswald et al.
patent: 2695873 (1954-11-01), Loverde
patent: 2817632 (1957-12-01), Mayor
patent: 2998459 (1961-08-01), Baker et al.
patent: 3442960 (1969-05-01), DePuy et al.

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