Sulfonation of Polyhydroxyaromatics
    3.
    发明申请
    Sulfonation of Polyhydroxyaromatics 失效
    聚羟基芳烃的磺化

    公开(公告)号:US20110046412A1

    公开(公告)日:2011-02-24

    申请号:US12859922

    申请日:2010-08-20

    申请人: John Frost Vu Bui

    发明人: John Frost Vu Bui

    摘要: The present invention provides improved process for the sulfonation of hydroxyaromatics amenable to direct isolation of the sulfonylated hydroxyaromatics in their free-acid forms. The process allows for the recyclization of sulfuric acid and minimizes waste. The starting materials are from a renewal resource, e.g., biomass, and contain detectable 14C up to a 14C content of 0.0000000001% (one part per trillion). The products made include sulfonated catechol, disulfonated pyrogallol and sulfonated protocatechuic acid.

    摘要翻译: 本发明提供改进的用于磺化羟基芳族化合物的方法,该方法适于直接分离其游离酸形式的磺酰化羟基芳族化合物。 该方法允许硫酸的再循环,并最大限度地减少浪费。 起始材料来自更新资源,例如生物质,并含有可检测的14C至14C含量为0.0000000001%(一兆份)。 所制成的产品包括磺化儿茶酚,二磺化连翘酚和磺化原儿茶酸。