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Title:
TREATMENT METHOD OF ALKALINE AQUEOUS SOLUTION OF MONOMETHYL SULFATE
Document Type and Number:
Japanese Patent JP2014195753
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve such a problem that a treatment method of a monomethyl sulfate capable of reducing formation amount of dimethyl ether, because dimethyl ether is formed when an alkali metal salt of monomethyl sulfuric acid is decomposed.SOLUTION: A treatment method of an alkaline aqueous solution of a monomethyl sulfate comprises removing formed methanol while adding the alkaline aqueous solution of the monomethyl sulfate to water having a temperature equal to or higher than the boiling point of methanol. A preferable treatment method of an alkaline aqueous solution of a monomethyl sulfate comprises removing formed methanol by distilling-out water and methanol from a mixture obtained while adding the alkaline aqueous solution of the monomethyl sulfate to water having a temperature equal to or higher than the boiling point of methanol.

Inventors:
KAWAMURA MITSUNOBU
ITO TADAKO
KITAURA TAKEAKI
Application Number:
JP2013071647
Publication Date:
October 16, 2014
Filing Date:
March 29, 2013
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C02F1/02; C07C303/44; C07C305/04
Domestic Patent References:
JPS62142129A1987-06-25
JPS4638130B1
JPS5182237A1976-07-19
JPH05178833A1993-07-20
Attorney, Agent or Firm:
Nakayama δΊ¨
Toru Sakamoto