Process for preparing paraffin-sulfonic acids

Details Process for preparing paraffin-sulfonic acids Process for preparing paraffin-sulfonic acids

1990-06-07

1992-04-21

Siegel, Alan

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

Organic compounds

Sulfonic acids or salts thereof

562121, C07C30300

Patent

active

051070197

ABSTRACT:
The invention is concerned with an improved process for preparing paraffin-sulfonic acids containing from 10 to 20 carbon atoms, as well as their salts. The process comprises the initial reaction of sulfo-oxidation of the concerned mixture of n-paraffins, the removal of unreacted n-paraffins from the reaction mixture, the removal of the excess of SO.sub.2 from said mixture, and the removal from the reaction mixture of the therein formed sulfuric acid, with the simultaneous recovery of the end product.
After the removal of SO.sub.2, to the reaction mixture hydrogen peroxide is added and the so obtained solution is submitted to one treatment selected from among the following treatments:

REFERENCES:
patent: 4310473 (1982-01-01), Springmann
patent: 4557873 (1985-12-01), Pistorius
patent: 4778945 (1988-10-01), Faggian
patent: 4798915 (1989-01-01), Faggian
patent: 4808343 (1989-02-01), Pistorius

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