Synthesis of chloroacetic acids

Details Synthesis of chloroacetic acids Synthesis of chloroacetic acids

1993-07-23

1995-03-28

Henley, III, Raymond J.

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

Organic compounds

Carboxylic acids and salts thereof

C07B 3900

Patent

active

054018765

ABSTRACT:
Chloroacetic acids and essentially pure hydrochloric acid are prepared by chlorinating acetic acid in the presence of a catalytically effective amount of acetic anhydride, acetyl chloride, or admixture thereof, whereby byproducing a gaseous stream of crude hydrochloric acid, contacting such gaseous stream with active charcoal to remove the chlorine values therefrom, separating (i) pure hydrochloric acid and (ii) remaining products from the gaseous stream thus purified, and recycling such remaining products (ii) to the medium of chlorination.

REFERENCES:
patent: 2826610 (1958-03-01), Morris et al.
patent: 4003723 (1977-01-01), Schafer et al.
patent: 4383121 (1983-03-01), Sugamiga et al.
CA 78(20):128110p Opp et al "Removal of Chlorine, Phosgene, and Hydrogen Chloride from waste Gasses", DE2121403, 1972, Abs. only.

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