Method for producing 1,6-hexanediol and caprolactone
    111.
    发明授权
    Method for producing 1,6-hexanediol and caprolactone 有权
    1,6-己二醇和己内酯的制备方法

    公开(公告)号:US08471042B2

    公开(公告)日:2013-06-25

    申请号:US13258166

    申请日:2010-03-31

    IPC分类号: C07D313/00 C07C27/04

    摘要: The invention relates to a process for preparing 1,6-hexanediol and caprolactone, preferably with at least 99.5% purity, which are especially virtually free of 1,4-cyclohexanediols, from a carboxylic acid mixture which is obtained as a by-product of the catalytic oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, by hydrogenating the carboxylic acid mixture, esterifying and hydrogenating a substream to hexanediol and cyclizing 6-hydroxycaproic ester, the 1,4-cyclohexanediols being removed either in the course of fractionation of the esterification mixture or last from the caprolactone.

    摘要翻译: 本发明涉及一种制备1,6-己二醇和己内酯的方法,该方法优选具有至少99.5%的纯度,特别是基本上不含1,4-环己烷二醇的羧酸混合物,其作为副产物 通过氢化羧酸混合物,将子流酯化和氢化成己二醇并使6-羟基己酸酯环化,使1,4-环己酮与环氧丙烷/环氧丙烷的催化氧化反应, 在酯化混合物分馏或最后由己内酯过程中除去环己烷二醇。

    METHOD FOR PRODUCING 1,6-HEXANEDIOL AND CAPROLACTONE
    113.
    发明申请
    METHOD FOR PRODUCING 1,6-HEXANEDIOL AND CAPROLACTONE 有权
    1,6-己二醇和癸酸酯的生产方法

    公开(公告)号:US20120010419A1

    公开(公告)日:2012-01-12

    申请号:US13258166

    申请日:2010-03-31

    IPC分类号: C07D313/04 C07C29/149

    摘要: The invention relates to a process for preparing 1,6-hexanediol and caprolactone, preferably with at least 99.5% purity, which are especially virtually free of 1,4-cyclohexanediols, from a carboxylic acid mixture which is obtained as a by-product of the catalytic oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, by hydrogenating the carboxylic acid mixture, esterifying and hydrogenating a substream to hexanediol and cyclizing 6-hydroxycaproic ester, the 1,4-cyclohexanediols being removed either in the course of fractionation of the esterification mixture or last from the caprolactone.

    摘要翻译: 本发明涉及一种制备1,6-己二醇和己内酯的方法,该方法优选具有至少99.5%的纯度,特别是基本上不含1,4-环己烷二醇,该羧酸混合物作为副产物 通过氢化羧酸混合物,将子流酯化和氢化成己二醇并使6-羟基己酸酯环化,使1,4-环己酮与环氧丙烷/环氧丙烷的催化氧化反应, 在酯化混合物分馏或最后由己内酯过程中除去环己烷二醇。

    Process for preparing 1,4-butanediol
    115.
    发明授权
    Process for preparing 1,4-butanediol 有权
    制备1,4-丁二醇的方法

    公开(公告)号:US07759531B2

    公开(公告)日:2010-07-20

    申请号:US12527139

    申请日:2007-03-14

    IPC分类号: C07C29/17

    摘要: The present invention provides an integrated process for continuously preparing 1,4-butanediol, which comprises the following stages: (I) reacting formaldehyde with acetylene in the presence of a copper catalyst at a pH of from 5 to 8 and a molar ratio of formaldehyde to acetylene of at most 2:1, (II) intermediately buffering the resulting butynediol-containing aqueous mixture for from 0.1 to 100 h, (III) hydrogenating the mixture obtained after the intermediate buffering and (IV) distilling the hydrogenation product obtained in stage III to obtain 1,4-butanediol.

    摘要翻译: 本发明提供连续制备1,4-丁二醇的一体化方法,其包括以下步骤:(I)在铜催化剂存在下,在5至8的pH下与甲醛与乙炔反应,并且甲醛的摩尔比 至最多2:1的乙炔,(II)将所得的含丁炔二醇的含水混合物中间缓冲0.1至100小时,(III)将中间缓冲后获得的混合物氢化,并且(IV)蒸馏阶段中获得的氢化产物 III得到1,4-丁二醇。

    PROCESS FOR PREPARING VERY PURE 1,4-BUTANEDIOL
    116.
    发明申请
    PROCESS FOR PREPARING VERY PURE 1,4-BUTANEDIOL 审中-公开
    制备非常纯的1,4-丁二醇的方法

    公开(公告)号:US20100101931A1

    公开(公告)日:2010-04-29

    申请号:US12524790

    申请日:2007-03-14

    IPC分类号: B01D3/14

    CPC分类号: C07C29/80 C07C31/207

    摘要: The present invention provides a process for distillatively purifying crude aqueous 1,4-butanediol (1), in which 1,4-butanediol (5) freed of components having lower boiling points than 1,4-butanediol and water is passed through three distillation columns (III, IV, V), components having a higher boiling point than 1,4-butanediol are drawn off from the bottom of the first column and conducted into the third (7), 1,4-butanediol from the top of the first column (6) is conducted into the second, the bottom product of the second column (9) is conducted into the third, the top product of the third column (11) is recycled at least partly into the first column, wherein the very pure 1,4-butanediol is withdrawn from a side draw of the second column.

    摘要翻译: 本发明提供一种蒸馏精制1,4-丁二醇粗1,4-丁二醇(1)的方法,其中不含1,4-丁二醇沸点低的组分的1,4-丁二醇(5)和水通过三次蒸馏 塔(III,IV,V),沸点高于1,4-丁二醇的组分从第一塔的底部排出,并从第一塔的顶部导入第三(7),1,4-丁二醇 第一列(6)进入第二列,第二列(9)的底部产品被导入第三列,第三列(11)的顶部产品至少部分地再循环到第一列中,其中非常 从第二塔的侧面抽出纯的1,4-丁二醇。

    Method for the separation of polymeric by-products from 1,4-butynediol
    120.
    发明授权
    Method for the separation of polymeric by-products from 1,4-butynediol 有权
    从1,4-丁炔二醇分离聚合副产物的方法

    公开(公告)号:US07572941B2

    公开(公告)日:2009-08-11

    申请号:US12360278

    申请日:2009-01-27

    IPC分类号: C07C29/17

    摘要: The present invention relates to processes for making 1,4-butanediol, 1,4-butenediol, or a mixture thereof by processing 1,4-butynediol in a dynamic mixing apparatus in an inert gas atmosphere at from 25 to 150° C. at a shear rate in the radial gap between rotor and stator of the mixing apparatus of more than 100 000 sec−1; phase separating the processed 1,4-butynediol at a temperature of from 25 to 150° C.; removing a bottom phase to obtain purified 1,4-butynediol; and reacting the purified 1,4-butynediol with hydrogen in the presence of a catalyst.

    摘要翻译: 本发明涉及通过在惰性气体气氛中在25至150℃下在动态混合装置中处理1,4-丁炔二醇来制备1,4-丁二醇,1,4-丁烯二醇或其混合物的方法。 混合装置的转子和定子之间的径向间隙的剪切速率大于100 000sec -1; 在25至150℃的温度下分离加工的1,4-丁炔二醇。 除去底相以获得纯化的1,4-丁炔二醇; 并在催化剂存在下使纯化的1,4-丁炔二醇与氢反应。