Title:
METHOD FOR PRODUCING α,α'-DICHLOROXYLENE
Document Type and Number:
WIPO Patent Application WO/2022/092110
Kind Code:
A1
Abstract:
The purpose of the present invention is to obtain high-purity α,α'-dichloroxylene by inhibiting the formation of impurities, such as nucleus-chlorinated compounds and chlorinated compounds formed by further chlorinating the side chains of the nucleus-chlorinated compounds, that have been difficult to separate out in purification by distillation. A method for producing α,α'-dichloroxylene according to the present invention includes a step in which, in a reaction vessel containing a boiling-state reaction fluid including starting-material xylene, the side-chain methyl groups of the xylene are chlorinated, the method being characterized by depressuring the inside of the reaction vessel in association with the degree of chlorination of the reaction fluid becoming higher, thereby keeping the reaction fluid boiling.
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Inventors:
KAI RYOTA (JP)
OZAWA KOHEI (JP)
ORITA YUSUKE (JP)
TSUTSUI HIDEYUKI (JP)
OZAWA KOHEI (JP)
ORITA YUSUKE (JP)
TSUTSUI HIDEYUKI (JP)
Application Number:
PCT/JP2021/039541
Publication Date:
May 05, 2022
Filing Date:
October 26, 2021
Export Citation:
Assignee:
NIPPON LIGHT METAL CO (JP)
International Classes:
C07C17/14; C07C22/04
Foreign References:
| JPS6372632A | 1988-04-02 | |||
| JPS6379843A | 1988-04-09 | |||
| JPS5444621A | 1979-04-09 | |||
| JPS55113729A | 1980-09-02 | |||
| JPH11246449A | 1999-09-14 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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