Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal
    3.
    发明申请
    Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal 失效
    通过分解含缩醛的副产物来提高多元醇生产中产率的方法

    公开(公告)号:US20050256346A1

    公开(公告)日:2005-11-17

    申请号:US10521810

    申请日:2003-07-18

    摘要: The invention relates to a method for increasing yield in the production of polyvalent alcohols, especially trimethylolpropane, obtained by condensing formaldehyde with a higher aldehyde. According to the inventive method, acid treatment is carried out on a mixture (high-boiling fraction) that is obtained by reprocessing, contains derivatives of said alcohols and has a higher boiling point than the respective alcohol, and the polyvalent alcohol is recovered from the acid-treated high-boiling fraction. The inventive method is characterised in that the water content of the high-boiling fraction amounts to between 20 and 90 wt. % in relation to the entire mixture of the high-boiling fraction and water.

    摘要翻译: 本发明涉及通过将甲醛与较高级醛缩合而获得的多价醇,特别是三羟甲基丙烷的生产中提高产量的方法。 根据本发明的方法,通过后处理获得的含有所述醇的衍生物并且具有比各醇更高的沸点的混合物(高沸点馏分)进行酸处理,并且从所述醇中回收多元醇 酸处理的高沸点馏分。 本发明的方法的特征在于高沸点馏分的含水量在20-90wt。之间。 相对于高沸点馏分和水的整个混合物的%。

    Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal
    6.
    发明授权
    Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal 失效
    通过分解含缩醛的副产物来提高多元醇生产中产率的方法

    公开(公告)号:US07301058B2

    公开(公告)日:2007-11-27

    申请号:US10521810

    申请日:2003-07-18

    IPC分类号: C07C31/18

    摘要: The invention relates to a method for increasing yield in the production of polyvalent alcohols, especially trimethylolpropane, obtained by condensing formaldehyde with a higher aldehyde. According to the inventive method, acid treatment is carried out on a mixture (high-boiling fraction) that is obtained by reprocessing, contains derivatives of said alcohols and has a higher boiling point than the respective alcohol, and the polyvalent alcohol is recovered from the acid-treated high-boiling fraction. The inventive method is characterised in that the water content of the high-boiling fraction amounts to between 20 and 90 wt. % in relation to the entire mixture of the high-boiling fraction and water.

    摘要翻译: 本发明涉及通过将甲醛与较高级醛缩合而获得的多价醇,特别是三羟甲基丙烷的生产中提高产量的方法。 根据本发明的方法,通过后处理获得的含有所述醇的衍生物并且具有比各醇更高的沸点的混合物(高沸点馏分)进行酸处理,并且从所述醇中回收多元醇 酸处理的高沸点馏分。 本发明的方法的特征在于高沸点馏分的含水量在20-90wt。之间。 相对于高沸点馏分和水的整个混合物的%。

    Method for hydrogenating methylol alkanals
    10.
    发明授权
    Method for hydrogenating methylol alkanals 有权
    氢化羟甲基链烷烃的方法

    公开(公告)号:US07439406B2

    公开(公告)日:2008-10-21

    申请号:US10553195

    申请日:2004-04-14

    CPC分类号: C07C29/141 C07C31/20

    摘要: Disclosed is a method for the catalytic hydrogenation of methylol alkanals of general formula (I), where R1 and R2 independently represent an additional methylol group or an alkyl group having with 1 to 22 carbon atoms, or an alkyl group with 1 to 22 C atoms, or an aryl group or aralkyl group with 6 to 33 carbon atoms, in the liquid phase on a hydrogenation catalyst. The inventive method is characterized in that a pH value ranging between 6.3 and 7.8 is adjusted in the hydrogenation feed by adding at least one tertiary amine

    摘要翻译: 公开了用于催化氢化通式(I)的羟甲基链烷烃的方法,其中R 1和R 2独立代表另外的羟甲基或具有 1〜22个碳原子,或1〜22个碳原子的烷基,或6〜33个碳原子的芳基或芳烷基。 本发明的方法的特征在于通过加入至少一种叔胺在氢化进料中调节范围在6.3和7.8之间的pH值