Process for the manufacture of chloroprene

Details Process for the manufacture of chloroprene Process for the manufacture of chloroprene

1983-01-17

1986-08-12

Warren, Charles F.

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

Organic compounds

Halogen containing

570229, C07C 1734

Patent

active

046058001

ABSTRACT:
An improved process for the catalytic dehydrochlorination of 3,4-dichlorobutene-1 with aqueous alkali, wherein the effluent from the dehydrochlorination reactor is separated into phases, and the organic phase is steam-stripped at low temperature (below about 80.degree. C.) to recover chloroprene product, while the steam stripper heels are returned to the dehydrochlorination reactor. A small portion of the heels are purged prior to being recycled. Most of the catalyst is recovered and returned to the reaction, but a small amount of make-up catalyst is added. Chloroprene made in this process is a valuable monomer which finds use in the manufacture of a broad line of synthetic elastomers of considerable industrial interest.

REFERENCES:
patent: 3664966 (1972-05-01), Gordon
patent: 3981937 (1976-09-01), Campbell et al.
patent: 4104316 (1978-08-01), Scharfe et al.
patent: 4215078 (1980-07-01), Hargreaves et al.

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