Method for producing hexachlorocyclobutene

Details Method for producing hexachlorocyclobutene Method for producing hexachlorocyclobutene

1977-02-28

1978-09-19

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

203DIG6, 203 99, C07C 2306

Patent

active

041154606

ABSTRACT:
Method for producing hexachlorocyclobutene from hexachlorobutadiene, wherein technical hexachlorobutadiene is rectified at a pressure of 2-10 mm Hg with a reflux ratio of 300-600, and the hexachlorobutadiene remaining in the sump during this procedure, after a heat treatment at 150.degree.-200.degree. C., is recycled into the rectifying column together with fresh, technical hexachlorobutadiene. The product rich in hexachlorocyclobutene, withdrawn overhead, is optionally subjected to a fractional crystallization.

REFERENCES:
patent: 3897505 (1975-07-01), Walker et al.
patent: 3963446 (1976-06-01), Miller

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