Method For Production Of 1,6-Hexanediol With A Purity In Excess of 99.5%
    113.
    发明申请
    Method For Production Of 1,6-Hexanediol With A Purity In Excess of 99.5% 失效
    1,6-己二醇生产方法纯度超过99.5%

    公开(公告)号:US20080207958A1

    公开(公告)日:2008-08-28

    申请号:US10569980

    申请日:2005-07-07

    IPC分类号: C07C29/143

    摘要: The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by a) freeing resulting the esterification mixture of excess alcohol and low boilers in a first distillation stage (alcohol removal), b) carrying out a separation of the bottom product in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, c) catalytically hydrogenating the ester fraction substantially free of 1,4-cyclohexanediols (ester hydrogenation) and d) in a purifying distillation stage, obtaining 1,6-hexanediol from the hydrogenation effluent in a manner known per se, which comprises selectively hydrogenating the ester mixture before stage a) and/or before stage b) (purifying hydrogenation).

    摘要翻译: 本发明提供了一种通过以下方式制备1,6-己二醇的方法:通过以下方法将氢化己二酸二烷基酯,6-羟基己酸烷基酯,1,4-环己二酮和4-羟基环己烷-1-酮作为包含杂质的酯混合物, 在第一蒸馏阶段(醇去除)中的过量醇和低锅炉的b),b)在第二蒸馏阶段中将底部产物分离成基本上不含1,4-环己二醇的酯馏分和至少包含 大部分1,4-环己烷二醇,c)催化氢化基本上不含1,4-环己二醇的酯馏分(酯氢化)和d)在纯化蒸馏阶段,以一种方式从氢化流出物中获得1,6-己二醇 本身已知,其包括在阶段a)和/或阶段b)之前选择性地氢化酯混合物(纯化氢化)。

    Continuous preparation of alkenyl compounds
    116.
    发明授权
    Continuous preparation of alkenyl compounds 有权
    连续制备烯基化合物

    公开(公告)号:US06794546B2

    公开(公告)日:2004-09-21

    申请号:US10309178

    申请日:2002-12-04

    IPC分类号: C07C4101

    摘要: A continuous process for the preparation of O—, S— and N-alkenyl compounds by reaction of the corresponding OH, SH or NH compound with an acetylene in the liquid phase in the presence of basic alkali or alkaline earth metal compounds at from 40 to 300° C. and from 0.11 to 5 MPa absolute comprises continuously feeding the corresponding OH, SH or NH compound and the acetylene and operating at a conversion of the corresponding OH, SH or NH compound of ≧90%.

    摘要翻译: 在碱性碱金属或碱土金属化合物存在下,通过相应的OH,SH或NH化合物与乙炔在液相中的反应制备O-,S-和N-烯基化合物的连续方法, 300℃和0.11-5MPa绝对值包括连续地供给相应的OH,SH或NH化合物和乙炔,并在≥90%的相应的OH,SH或NH化合物的转化下操作。

    Method for producing N-alkenyl amides
    118.
    发明授权
    Method for producing N-alkenyl amides 失效
    制备N-烯基酰胺的方法

    公开(公告)号:US06624303B2

    公开(公告)日:2003-09-23

    申请号:US10168213

    申请日:2002-06-19

    IPC分类号: C07D22310

    摘要: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst compounds of the general formulae (Ia) and/or (Ib) R1O—(CH2CH2CH2CH2O)n—H  (Ia): R1O—(CH2CH2CH2CH2O)n—R2,  (Ib): where n is 1, 2 or 3 and R1 and R2 are independently C1- to C6-alkyl or C2- to C6-alkenyl, or together a butenyl unit.

    摘要翻译: 在碱性碱金属化合物和助催化剂存在下,通过使相应的NH-酰胺与乙炔在液相中反应来制备N-烯基酰胺的方法包括使用通式(Ia)和/或 (Ib)其中n为1,2或3,R 1和R 2独立地为C 1 -C 6 - 烷基或C 2 -C 6 - 烯基,或一起为丁烯基单元。

    Purification of alkenyl compounds
    119.
    发明授权
    Purification of alkenyl compounds 失效
    链烯基化合物的纯化

    公开(公告)号:US06384216B1

    公开(公告)日:2002-05-07

    申请号:US09924475

    申请日:2001-08-09

    IPC分类号: C07C20984

    摘要: A process for purifying alkenyl compounds having a divalent or trivalent heteroatom in the &agr;-position relative to the double bond by distillation comprises carrying out at least two distillations in which the purified alkenyl compounds are obtained from the gas phase by condensation, where the time between the first distillation after the synthesis of the alkenyl compounds and at least one further distillation is at least one day and the purified alkenyl compounds have an APHA color number of

    摘要翻译: 通过蒸馏纯化在相对于双键的α位具有二价或三价杂原子的烯基化合物的方法包括进行至少两次蒸馏,其中通过冷凝从气相中获得纯化的链烯基化合物,其中, 在合成烯基化合物之后的第一次蒸馏和至少一次进一步的蒸馏是至少一天,并且纯化的烯基化合物的APHA颜色数目<30。

    Hydrogenation of aldehydes
    120.
    发明授权
    Hydrogenation of aldehydes 失效
    醛的氢化

    公开(公告)号:US06350923B1

    公开(公告)日:2002-02-26

    申请号:US09472798

    申请日:1999-12-28

    IPC分类号: C07C29141

    CPC分类号: C07C29/141 C07C31/20

    摘要: A dialdehyde, trialdehyde or tetraldehyde or at least two thereof as aldehyde are hydrogenated by bringing into contact at least: the aldehyde; a catalyst comprising at least one metal selected from the group consisting of nickel, cobalt and copper in chemically bound and/or elemental form; hydrogen; at a gas pressure in the range from 5 to 350 bar and a temperature in the range from 40 to 300° C.

    摘要翻译: 二醛,戊醛或四醛或其至少两个作为醛被氢化,至少与醛接触:包含至少一种选自镍,钴和铜的化学结合和/或元素的金属的催化剂 形式;氢气;在5至350巴的气体压力和40至300℃的温度范围内。