Process for the preparation of dichloro- or trichloroacetyl chlo

Details Process for the preparation of dichloro- or trichloroacetyl chlo Process for the preparation of dichloro- or trichloroacetyl chlo

1990-10-04

1991-07-09

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic halides

C07C 5158

Patent

active

050307533

ABSTRACT:
In the conversion of trichloroethene and tetrachloroethene into dichloroacetyl chloride (DAC) or trichloroacetyl chloride (TAC) by means of oxygen, the reaction mixture is passed several times as a thin film through the reaction zone. The reaction time for achieving a certain conversion is in this way reduced.
In the preparation of DAC, a constant content of acid chloride is established in the reaction mixture by removing some of the mixture and working this up by distillation, while the circulating reaction mixture is simultaneously topped up with fresh trichloroethene.

REFERENCES:
patent: 2321823 (1943-06-01), Kirkbride
patent: 3654358 (1972-04-01), Jeffrey

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