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    • 1. 发明授权
    • Method for the production of bleached, low-sultone olefin sulfonates
    • 生产漂白低低聚烯烃烯烃磺酸盐的方法
    • US4197255A
    • 1980-04-08
    • US892423
    • 1978-03-31
    • Horst BaumannManfred Teupel
    • Horst BaumannManfred Teupel
    • C07C303/44C07C139/14
    • C07C309/00
    • Aqueous solutions of alkali metal C.sub.8-22 .alpha.-olefin sulfonates of light color and of low sultone content are prepared rapidly and at moderate temperatures by:(a) reacting a C.sub.8-22 .alpha.-olefin with gaseous sulfur trioxide thereby forming a crude sulfonation product mixture containing C.sub.8-22 olefin sulfonic acids, with a content of sultones,(b) bleaching said crude sulfonation product mixture at 30.degree. C. to 80.degree. C. for 10 to 60 minutes with an aqueous alkaline bleaching solution at a pH of at least 8,(c) heating said diluted bleached sulfonation product mixture containing excess alkali to a temperature of from 140.degree. C. to 170.degree. C. until the sultone content of said sulfonation product mixture is less than 100 ppm, and(d) recovering said alkali metal C.sub.8-22 .alpha.-olefin sulfonates of light color and of low sultone content. A decrease in the sultone content from as much as 650,000 ppm to less than 50 ppm is possible by the method.
    • 通过以下方式快速和中等温度地制备浅色和低磺内酯含量的碱金属C8-22α-烯烃磺酸盐水溶液:(a)使C8-22α-烯烃与气态三氧化硫反应,从而形成粗制磺化产物 含有磺内酯含量的C8-22烯烃磺酸的混合物,(b)将所述粗制磺化产物混合物在30℃至80℃下漂洗10至60分钟,用碱性漂白溶液在pH为 至少8,(c)将含有过量碱的所述稀释的漂白磺化产物混合物加热到140℃至170℃的温度,直到所述磺化产物混合物的磺内酯含量小于100ppm,和(d)回收 所说的碱金属C8-22α-烯烃磺酸盐的颜色浅,含量低。 通过该方法,可以将磺内酯含量从多达650,000ppm降低到小于50ppm。