Trimethylolpropane color improvement
    4.
    发明公开
    Trimethylolpropane color improvement 有权
    三羟甲基丙烷色彩增强

    公开(公告)号:EP2607341A3

    公开(公告)日:2013-10-23

    申请号:EP13001465.7

    申请日:2010-11-18

    申请人: Oxea Bishop LLC

    IPC分类号: C07C29/74 C07C29/80 C07C31/22

    CPC分类号: C07C29/88 C07C31/22

    摘要: The present invention provides a process for improving the color of trimethylolpropane including the steps of preparing a crude aqueous solution of trimethylolpropane (TMP) containing color causing impurities, distilling the solution evaporating excess water from the same, extracting the TMP from the solution, and purifying the extracted TMP, the improvement which comprises the steps of adding an alkaline material to the crude TMP solution after the evaporation step to react with the color causing impurities, cooling the TMP solution and then adding an organic acid thereto to partially neutralize the TMP solution and then proceeding with the extraction and purification steps to form TMP with an improved color.

    Trimethylolpropane color improvement
    5.
    发明公开
    Trimethylolpropane color improvement 有权
    三羟甲基丙烷,Farbverbesserung

    公开(公告)号:EP2341041A1

    公开(公告)日:2011-07-06

    申请号:EP10014720.6

    申请日:2010-11-18

    申请人: Oxea Bishop LLC

    IPC分类号: C07C29/74 C07C29/80 C07C31/22

    CPC分类号: C07C29/88 C07C31/22

    摘要: The present invention provides a process for improving the color of trimethylolpropane which comprises the steps of a) supplying a crude, aqueous base solution of trimethylolpropane, containing color causing impurities, and having a pH of less than about 9; b) contacting said base solution with an alkaline material for a period of time sufficient to increase the pH of said base solution to greater than 11 and at a sufficient temperature to allow the color causing impurities to react with said alkaline material; c) cooling the resulting solution from step (b) for a sufficient period of time; d) contacting said base solution of step (c) with an organic acid for a sufficient period of time to lower the pH thereof to less than about 9.5; e) extracting the trimethylolpropane from said base solution of step (d ) with an organic solvent; f) separating the trimethylolpropane from said organic solvent; and g) purifying said trimethylolpropane from step f) to form a trimethylolpropane having a phthalic color of less than 0.20 and an acid wash color of less than 8.

    摘要翻译: 本发明提供了一种改善三羟甲基丙烷颜色的方法,该方法包括以下步骤:a)提供含有引起杂质的颜料,pH值小于约9的三羟甲基丙烷粗制水溶液; b)使所述碱溶液与碱性材料接触足以使所述碱溶液的pH增加至大于11且足够温度以允许引起杂质的颜色与所述碱性物质反应的时间; c)将来自步骤(b)的所得溶液冷却足够的时间; d)将步骤(c)的所述碱溶液与有机酸接触足够的时间以将其pH降至小于约9.5; e)用有机溶剂从步骤(d)的碱溶液中萃取三羟甲基丙烷; f)从所述有机溶剂中分离出三羟甲基丙烷; 和g)从步骤f)中纯化所述三羟甲基丙烷以形成邻苯二甲酸小于0.20且酸洗颜色小于8的三羟甲基丙烷。

    Trimethylolpropane color improvement
    8.
    发明公开
    Trimethylolpropane color improvement 有权
    三羟甲基丙烷,Farbverbesserung

    公开(公告)号:EP2607341A2

    公开(公告)日:2013-06-26

    申请号:EP13001465.7

    申请日:2010-11-18

    申请人: Oxea Bishop LLC

    IPC分类号: C07C29/74 C07C29/80 C07C31/22

    CPC分类号: C07C29/88 C07C31/22

    摘要: The present invention provides a process for improving the color of trimethylolpropane including the steps of preparing a crude aqueous solution of trimethylolpropane (TMP) containing color causing impurities, distilling the solution evaporating excess water from the same, extracting the TMP from the solution, and purifying the extracted TMP, the improvement which comprises the steps of adding an alkaline material to the crude TMP solution after the evaporation step to react with the color causing impurities, cooling the TMP solution and then adding an organic acid thereto to partially neutralize the TMP solution and then proceeding with the extraction and purification steps to form TMP with an improved color.

    摘要翻译: 本发明提供一种改善三羟甲基丙烷颜色的方法,包括以下步骤:制备含有引起杂质的颜色的三羟甲基丙烷(TMP)的粗水溶液,蒸馏除去过量水的溶液,从溶液中萃取TMP,并纯化 提取的TMP,其改进包括在蒸发步骤之后向粗TMP溶液中加入碱性物质以与引起杂质的颜色反应的步骤,冷却TMP溶液,然后加入有机酸以部分中和TMP溶液, 然后进行提取和纯化步骤以形成具有改进颜色的TMP。