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    Process for producing 1,6-hexanediol with level of purity over 99%
    1.
    发明专利
    Process for producing 1,6-hexanediol with level of purity over 99% 有权
    生产含有99％以上纯度的1,6-HEXANEDOLOL的方法

    公开(公告)号：JP2009001579A

    公开(公告)日：2009-01-08

    申请号：JP2008173460

    申请日：2008-07-02

    Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

    Inventor： BAUR KARL GERHARD ,  FISCHER ROLF DR ,  PINKOS ROLF ,  STEIN FRANK ,  RUST HARALD ,  BREITSCHEIDEL BORIS DR

    IPC: B01J23/80 ,  C07C29/149 ,  B01J23/889 ,  C07B61/00 ,  C07C29/80 ,  C07C31/20

    CPC classification number: C07C29/149 ,  C07C31/20

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing hexanediol-1,6 from a carboxylic acid mixture.
    SOLUTION: In the method, (a) the carboxylic acids contained in an aqueous dicarboxylic acid mixture are converted to the corresponding carboxylic acid esters by using a low-molecular weight alcohol, (b) the obtained esterification mixture is separated from the excess alcohol and low-boiling point components in a first distillation stage, (c) the bottom products are fractionated in a second distillation stage into an ester fraction essentially free of 1,4-cyclohexanediol and a fraction comprising at least the major part of the 1,4-cyclohexanediol, (d) the ester fraction substantially free of 1,4-cyclohexanediol is catalytically hydrogenated, and (e) 1,6-hexanediol is obtained in a rectification stage from the hydrogenated discharge in a known manner. Thereby, high purity 1,6-hexanediol is made obtainable from waste products in a high yield.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 待解决的问题：提供从羧酸混合物制备己二醇-1,6-的方法。 解决方案：在该方法中，（a）通过使用低分子量醇将二羧酸混合物中所含的羧酸转化为相应的羧酸酯，（b）将所得酯化混合物与 在第一蒸馏阶段中过量的醇和低沸点组分，（c）底部产物在第二蒸馏阶段被分馏成基本上不含1,4-环己二醇的酯馏分和至少包含主要部分的馏分 1,4-环己二醇，（d）基本上不含1,4-环己二醇的酯馏分是催化氢化的，（e）以已知方式从氢化排出物在精馏阶段获得1,6-己二醇。 因此，高纯度的1,6-己二醇可以以高产率从废产物中获得。 版权所有（C）2009，JPO＆INPIT

    Method for preparing 1,6-hexanediol with level of purity over 99%
    2.
    发明专利
    Method for preparing 1,6-hexanediol with level of purity over 99% 审中-公开
    用于制备具有99％以上纯度的1,6-己二醇的方法

    公开(公告)号：JP2012255023A

    公开(公告)日：2012-12-27

    申请号：JP2012186961

    申请日：2012-08-27

    Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

    Inventor： BAUR KARL GERHARD ,  FISCHER ROLF DR ,  PINKOS ROLF ,  STEIN FRANK ,  RUST HARALD ,  BREITSCHEIDEL BORIS DR

    IPC: B01J23/80 ,  C07C29/149 ,  B01J23/889 ,  C07B61/00 ,  C07C29/80 ,  C07C31/20

    CPC classification number: C07C29/149 ,  C07C31/20

    Abstract: PROBLEM TO BE SOLVED: To provide a method for preparing 1,6-hexanediol from a carboxylic acid mixture.SOLUTION: The method for preparing 1,6-hexanediol includes processes of: (a) converting carboxylic acids contained in an aqueous dicarboxylic acid mixture to the corresponding carboxylic acid esters by using a low-molecular weight alcohol; (b) separating the obtained esterification mixture from excessive alcohol and low-boiling point components in a first distillation stage; (c) fractionating bottom products in a second distillation stage into an ester fraction essentially free of 1,4-cyclohexanediol and a fraction comprising the major part of 1,4-cyclohexanediol; (d) catalytically hydrogenating the ester fraction essentially free of 1,4-cyclohexanediol; and (e) obtaining 1,6-hexanediol in a purifying distillation stage from the hydrogenation product in a known manner. In this way, high purity 1,6-hexanediol can be obtained in a high yield from waste products.

    Abstract translation: 待解决的问题：提供从羧酸混合物制备1,6-己二醇的方法。 解决方案：制备1,6-己二醇的方法包括以下工艺：（a）通过使用低分子量醇将二羧酸混合物中所含的羧酸转化为相应的羧酸酯; （b）在第一蒸馏阶段将得到的酯化混合物与过量的醇和低沸点组分分离; （c）在第二蒸馏阶段将底部产物分馏成基本上不含1,4-环己二醇的酯馏分和包含主要部分1,4-环己二醇的馏分; （d）催化氢化基本上不含1,4-环己二醇的酯馏分; 和（e）以已知的方式从氢化产物在纯化蒸馏阶段获得1,6-己二醇。 以这种方式，可以以高产率从废产物中获得高纯度的1,6-己二醇。 版权所有（C）2013，JPO＆INPIT

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