Title:
CONTINUOUS PRODUCTION OF ALKALI METAL STYRENESULFONATE
Document Type and Number:
Japanese Patent JP3890642
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for continuously producing a highly pure alkali metal styrenesulfonate good in productivity and operability.
SOLUTION: This method for continuously producing an alkali metal styrenesulfonate comprises a step for continuously charging an aqueous solution of β-haloethylbenzenesulfonic acid and/or its alkali metal salt, and an aqueous solution of an alkali metal hydroxide to a crystallizing vessel to regulate the concentration of the alkali metal styrenesulfonate so as to be 1-20wt.% in the whole amount, a step for performing reactive crystallization of the alkali metal styrenesulfonate, and a step for continuously discharging an alkali metal styrenesulfonate slurry.
Inventors:
Takahiro Matsunaga
Hiroyuki Wakamatsu
Hiroyuki Wakamatsu
Application Number:
JP34184996A
Publication Date:
March 07, 2007
Filing Date:
December 20, 1996
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
C07C303/32; C07C309/29; C07C303/44; (IPC1-7): C07C309/29; C07C303/32; C07C303/44
Domestic Patent References:
| JP38020570B1 | ||||
| JP35014220B1 | ||||
| JP49095940A | ||||
| JP55064565A |
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