Method of preparing carbon tetrachloride

Details Method of preparing carbon tetrachloride Method of preparing carbon tetrachloride

1975-12-18

1980-07-08

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260660, C07C 1700

Patent

active

042117283

ABSTRACT:
A method of preparing carbon tetrachloride of high purity from a crude mixture comprising lower aliphatic hydrocarbons, includes a step of liquid-phase chlorination at about 160.degree.-200.degree. C. and a step of vapor-phase chlorolysis at about 450.degree.-600.degree. C. in the presence of a metal chloride catalyst such as MoCl.sub.5. This method has both economic and anti-pollution advantages in the treatment of otherwise waste residues from the industrial manufacture of, for example, vinylchloride monomer, ethylene and propylene oxides or chloroprene. Carbon tetrachloride is an old product having known utilities as solvent for resins, waxes, lacquers and for dry cleaning; also as fire-extinguisher, extractor of seeds, anthelmintic in hookworms, exterminator of grain weevils, etc.

REFERENCES:
patent: 2160574 (1939-05-01), Hennig
patent: 2305821 (1942-12-01), Wimmer
patent: 2727076 (1955-12-01), Warren
patent: 2919296 (1959-12-01), Thermet et al.
patent: 3363010 (1968-01-01), Schwarzenbek
patent: 3454660 (1969-07-01), Chauffart et al.
patent: 3928479 (1975-12-01), Riemenschneider

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