Process for preparing quaternary ammonium carbonate esters
    96.
    发明公开
    Process for preparing quaternary ammonium carbonate esters 失效
    制备季铵碳酸酯的方法

    公开(公告)号:EP0475513A1

    公开(公告)日:1992-03-18

    申请号:EP91202252.2

    申请日:1991-09-04

    IPC分类号: C07C219/04 C07C309/42

    摘要: A process is reported for preparation of quaternary ammonium type carbonate esters which are useful as bleach precursors in detergent compositions. The process involves transesterification of low molecular weight carbonates, e.g. diphenyl carbonate, with amino functionalized alcohols, e.g. dialkylaminoalkanol. Preferably the reaction involves transesterification of diphenylcarbonate with the hydroxyl compound followed by removal of phenol. Subsequent thereto the transesterified ester is quaternized with an alkylating agent. Optionally there may be a sulfonation of phenol ester subsequent to the quaternization reaction.

    摘要翻译: 据报道,用于制备季铵型碳酸酯的方法可用作洗涤剂组合物中的漂白剂前体。 该方法涉及低分子量碳酸酯的酯交换,例如, 碳酸二苯酯与氨基官能化的醇例如 dialkylaminoalkanol。 优选该反应涉及碳酸二苯酯与羟基化合物的酯交换,然后除去苯酚。 随后酯交换酯用烷化剂季铵化。 任选地,在季铵化反应之后可能存在酚酯的磺化。

    Improved process for the production of carbonate esters
    98.
    发明公开
    Improved process for the production of carbonate esters 失效
    Verfahren zur Herstellung vonKohlensäureestern。

    公开(公告)号:EP0414655A1

    公开(公告)日:1991-02-27

    申请号:EP90870133.7

    申请日:1990-08-24

    申请人: MONSANTO COMPANY

    IPC分类号: C07C309/42 C07C303/32

    CPC分类号: C07C303/32 C07C309/42

    摘要: The invention relates to a process of producing carbonate esters wherein an alkyl chloroformate is reacted with a phenolsulfonate in an alkaline medium and discloses the improve­ment whereby dialkylcarbonate formation is reduced by adding an acidifying agent to the reaction mixture after the reaction and before precipitation of the alkylsulfophenyl carbonate.

    摘要翻译: 本发明涉及一种生产碳酸酯的方法,其中在碱性介质中氯甲酸烷基酯与苯酚磺酸酯反应,并公开了通过在反应后向反应混合物中加入酸性化合物和烷基磺基苯基 碳酸盐。