Verfahren zur Herstellung reiner Alkansulfonsäure

This invention relates to a process for the production of an alkanesulfonic acid such as isethionic acid with a high purity in a high yield and at a low cost by oxidation of a (hydroxy)alkylmercaptan with hydrogen peroxide characterized in that a whole amount beyond a stoichiometric amount of a solu...

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Bibliographic Details
Main Authors KOBAYASHI, HIROMITSU, KITAMURA, HIROTSUGU, NITOH, HIROHISA, KUSHIBE, KAZUYOSHI
Format Patent
LanguageGerman
Published 22.08.2002
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:This invention relates to a process for the production of an alkanesulfonic acid such as isethionic acid with a high purity in a high yield and at a low cost by oxidation of a (hydroxy)alkylmercaptan with hydrogen peroxide characterized in that a whole amount beyond a stoichiometric amount of a solution of hydrogen peroxide having a H2O2 concentration of not less than 50% by weight is charged into a reaction vessel, said mercaptan is continuously fed at a temperature of 50 DEG C or lower, aging is carried out, distillation with boiling is carried out and then the reaction mixture is contacted with an anion exchanger.
Bibliography:Application Number: DE19986002443T