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Title:
PRODUCTION OF CHLORANIL
Document Type and Number:
Japanese Patent JPH05140022
Kind Code:
A
Abstract:

PURPOSE: To produce readily handleable high-purity chloranil having a high bulk specific gravity by chlorinating hydroquinone under mild conditions according to a simple method for operation.

CONSTITUTION: Hydroquinone is dissolved in a nonuniform mixed solvent of hydrochloric acid with an organic solvent incompatible therewith, e.g. a halogenated aromatic hydrocarbon such as dichlorobenzene and chlorine gas is then fed to the mixed solvent. The feed rate of the chlorine gas during a period of feeding the chlorine gas in a molar amount of 3.5 to 4.5 times based on 1mol hydroquinone is ≤400ml/min based on 1mol hydroquinone.


Inventors:
Doi, Hiroyuki
Iwasaki, Fumiaki
Application Number:
JP1991000297237
Publication Date:
June 08, 1993
Filing Date:
November 13, 1991
Export Citation:
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Assignee:
TOKUYAMA SODA CO LTD
International Classes:
C07C46/06; C07C46/00; C07C50/24; (IPC1-7): C07C46/06; C07C50/24



 
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