Production of 1,2-dichloroethane with purification of dichloroet

Details Production of 1,2-dichloroethane with purification of dichloroet Production of 1,2-dichloroethane with purification of dichloroet

1975-11-19

1981-02-24

Levine, Herbert

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

Organic compounds

Halogen containing

570262, C07C 1702

Patent

active

042527490

ABSTRACT:
In a process for production of 1,2-dichloroethane by reaction of chlorine and ethylene at temperatures between about 85.degree. C. and about 160.degree. C. conducted in the presence of a liquid medium in which a recycle stream of 1,2-dichloroethane containing chloroprene and optionally other incompletely chlorinated C.sub.4 hydrocarbons is introduced into the chlorination reaction system, the improvement comprising subjecting the recycle 1,2-dichloroethane to controlled chlorination by contacting it with a chlorination agent in such a manner and under such conditions as to partially chlorinate the chloroprene contained therein to produce a chlorinated derivative thereof, fractionating the thus treated 1,2-dichloroethane to separate chlorinated derivates of chloroprene therefrom, and introducing the thus purified 1,2-dichloroethane recycle into the chlorination reactor.

REFERENCES:
patent: 2929852 (1960-03-01), Benedict
patent: 3548014 (1970-12-01), Jacobowski et al.
patent: 3562349 (1971-02-01), Pawloski et al.
patent: 3624169 (1971-11-01), Fruhwirth et al.
patent: 3839475 (1974-10-01), Kurtz et al.
patent: 3876714 (1975-04-01), Coppens
patent: 3920761 (1975-11-01), Krome

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