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    • 1. 发明授权
    • Method for producing optically active alcohols or carboxylic acids
    • 光学活性醇或羧酸的制备方法
    • US07507866B2
    • 2009-03-24
    • US10589049
    • 2005-02-08
    • Heiko UrtelMarkus RöschAndrea HaunertMarkus Schubert
    • Heiko UrtelMarkus RöschAndrea HaunertMarkus Schubert
    • C07C31/18C07C53/00
    • C07C29/149C07B41/02C07B53/00C07B2200/07C07C213/00C07D307/33C07C215/08C07C215/10C07C215/18C07C215/28C07C31/22C07C31/207C07C31/205C07C31/36C07C31/20C07C31/12
    • The present invention relates to a process for preparing optically active hydroxy-, alkoxy-, amino-, alkyl-, aryl- or chlorine-substituted alcohols or hydroxy carboxylic acids having from 3 to 25 carbon atoms or their acid derivatives or cyclization products by hydrogenating the correspondingly substituted optically active mono- or dicarboxylic acids or their acid derivatives in the presence of a catalyst whose active component consists of rhenium or of rhenium and comprises at least one further element having an atomic number of from 22 to 83, with the provisos that a. the at least one further element having an atomic number of from 22 to 83 is not ruthenium and b. in the case of the preparation of optically active 2-amino-, 2-chloro-, 2-hydroxy- and 2-alkoxy-1-alkanols by catalytically hydrogenating corresponding optically active 2-aminocarboxylic acids, 2-chlorocarboxylic acids, 2-hydroxycarboxylic acids and 2-alkoxycarboxylic acids or their acid derivatives, the at least one further element having an atomic number of from 22 to 83 is not palladium or platinum.
    • 本发明涉及通过氢化制备光学活性羟基,烷氧基 - ,氨基 - ,烷基 - ,芳基 - 或氯取代的醇或具有3至25个碳原子的羟基羧酸或其酸衍生物或环化产物的方法 相应地取代的光学活性单羧酸或二羧酸或其酸衍生物在其活性组分由铼或铼组成的催化剂存在下,并且包含至少一种原子序数为22至83的另外的元素,条件是 一个。 原子序数为22〜83的至少一个以上的元素不是钌,而是b。 在通过催化氢化相应的光学活性2-氨基羧酸,2-氯羧酸,2-羟基羧酸的2-氨基 - ,2-氯 - ,2-羟基 - 和2-烷氧基-1-链烷醇的制备 酸和2-烷氧基羧酸或其酸衍生物,原子序数为22至83的至少一种另外的元素不是钯或铂。
    • 10. 发明授权
    • Method for production of 1,6-hexanediol with a purity in excess of 99.5%
    • 制备纯度超过99.5%的1,6-己二醇的方法
    • US07449609B2
    • 2008-11-11
    • US10569980
    • 2005-07-07
    • Andrea HaunertRolf PinkosThomas KrugTilman SirchMichael KochGerd-Dieter Tebben
    • Andrea HaunertRolf PinkosThomas KrugTilman SirchMichael KochGerd-Dieter Tebben
    • C07C29/149
    • C07C29/145C07C29/149C07C2601/14C07C31/20C07C35/08
    • 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).
    • 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-环己烷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)。