Process for producing clear aqueous solution of olefin sulfonic acid
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United States of America Patent
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Jul 22, 1980
Grant Date -
N/A
app pub date -
Mar 14, 1979
filing date -
Mar 20, 1978
priority date (Note) -
Expired
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Abstract
Disclosed is a process for producing a clear aqueous solution of the magnesium salt of an olefin sulfonic acid by (i) sulfonating an olefin with an gaseous sulfur trioxide, (ii) neutralizing the resulting sulfonated olefin with an inorganic alkali consisting of magnesium hydroxide and/or oxide and an organic amine selected from water-soluble alkanol amines in specified amounts and, then, (iii) heating the neutralized mixture at a pH of from 6.0 to 8.0. Thus, a clear aqueous solution of the magnesium salt of an olefin sulfonic acid having no bad odor and no color deterioration can be obtained.
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