Process for the production of pure alkanesulfonic acids

Details Process for the production of pure alkanesulfonic acids Process for the production of pure alkanesulfonic acids

1998-01-20

1999-06-15

Burn, Brian M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

562108, C07C30300

Patent

active

059123850

ABSTRACT:
This invention relates to a process for the production of an alkanesulfionic 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 H.sub.2 O.sub.2 concentration of not less than 50% by weight is charged into a reaction vessel, said mercaptan is continuously fed at a temperature of 50.degree. C. or lower, aging is carried out, distillation with boiling is carried out and then the reaction mixture is contacted with an anion exchanger.

REFERENCES:
patent: 4987250 (1991-01-01), McGee et al.

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