Title:
PRODUCTION OF XYLYLENE GLYCOL COMPOUND
Document Type and Number:
Japanese Patent JP3247903
Kind Code:
B2
Abstract:
PURPOSE: To obtain a sylylene glycol with no concomitant by-products such as colored products by reaction of α,α'-dichloroxylene with water while keeping the pH value in the reaction system within a specified range using an alkali metal hydroxide.
CONSTITUTION: In producing the xylylene glycol by hydrolysis of α,α'- dichloroxylene, the α,α'-dichloroxylene is made to react with 1-15 wt.times of water at 70-150 (pref. 80-120)°C while keeping the pH value int eh reaction system at ≤9.5 (but ≥4) using 2-5 (pref. 2-3) molar times, based on the α,α'- dichloroxylene, of an alkali metal hydroxide.
Inventors:
Keizaburo Yamaguchi
Tatsunobu Urakami
Akihiro Yamaguchi
Tatsunobu Urakami
Akihiro Yamaguchi
Application Number:
JP16080892A
Publication Date:
January 21, 2002
Filing Date:
June 19, 1992
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C07B61/00; C07C29/124; C07C33/26; (IPC1-7): C07C33/26; C07C29/124
Domestic Patent References:
| JP6426528A | ||||
| JP6032737A | ||||
| JP6438036A | ||||
| JP462972B1 |
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