Process for production of 2,3-dichlorobutadiene-1,3

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

Reexamination Certificate

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C570S189000, C570S216000, C570S226000, C570S227000

Reexamination Certificate

active

08030531

ABSTRACT:
2,3-dichlorobutadiene-1,3 of high purity is produced from 1,2,3,4-tetrachlorobutane by a process comprising the steps of dehydrochlorination, chlorination of the reaction product obtained in the dehydrochlorination step and subsequent separation of a 2,3-dichlorobutadiene-1,3 composition from the reaction product of the chlorination step.

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patent: 6380446 (2002-04-01), Drew et al.
U.S. Appl. No. 12/335,583, filed Dec. 16, 2008, Terry Wayne Redwine.

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