Method for producing chlorinated hydrocarbon having...

Details Method for producing chlorinated hydrocarbon having... Method for producing chlorinated hydrocarbon having...

2007-12-04

2007-12-04

Price, Elvis O. (Department: 1621)

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

Organic compounds

Halogen containing

C570S190000, C570S191000, C570S194000, C570S216000

Reexamination Certificate

active

10520538

ABSTRACT:
The present invention relates to a simple method for efficiently producing aromatic-substituted chlorinated hydrocarbons, for example, high-purity cumyl chloride (1,4-bis(1-chloro-1-methylethyl)benzene, p-DCC) that can be used as an initiator for cationic polymerization. A corresponding tertiary alcohol such as 1,4-bis(1-hydroxy-1-methylethyl)benzene is mixed with aqueous hydrochloric acid and subjected to stirring, and then the resulting organic layer is brought into contact with a hydrogen chloride gas to produce high-quality aromatic-substituted chlorinated hydrocarbon in high yield. Furthermore, in order to purify a mixture containing a chlorinated hydrocarbon compound, the mixture being produced by reaction between an aqueous solution of a metal hypochiorite and a protonic acid, the mixture is allowed to react with an aqueous alkaline solution to form an alcohol compound. Then, a solid is isolated by solid-liquid separation and chlorinated again with the aqueous hydrochloric acid. As a result, a high-purity chlorinated hydrocarbon compound is produced in high yield.

REFERENCES:
patent: 10 175892 (1998-06-01), None
patent: 11 302205 (1999-11-01), None
Supplementary European Search Report No. 03 74 1172, dated May 24, 2006.

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