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    • 1. 发明授权
    • Preparation of cycloalkanols
    • 环烷醇的制备
    • US5475158A
    • 1995-12-12
    • US159706
    • 1993-12-01
    • Thomas KrugRolf FischerRolf Pinkos
    • Thomas KrugRolf FischerRolf Pinkos
    • C07C27/02C07C29/09C07C35/08C07C29/20C07C53/10
    • C07C29/095C07C2101/14
    • A process for the preparation of cycloalkanols by the hydrolysis of cycloalkyl C.sub.1 -C.sub.4 fatty acid esters, which comprises the following steps:a) reaction of cycloalkyl C.sub.1 -C.sub.4 fatty acid esters with water at a temperature of from 30.degree. to 250.degree. in the liquid phase yielding a reaction mixture consisting of cycloalkyl C.sub.1 -C.sub.4 fatty acid esters, cycloalkanol, C.sub.1 -C.sub.4 fatty acids, and water.b) separation of the reaction mixture obtained in stage a) at a temperature of from 0.degree. to 200.degree. C. into a top phase consisting substantially of cycloalkanol and cycloalkyl C.sub.1 -C.sub.4 fatty acid esters and a bottom phase consisting substantially of water and C.sub.1 -C.sub.4 fatty acids.c) separation of cycloalkanol from the top phase obtained in stage b) by distillation and recycling unconverted cycloalkyl C.sub.1 -C.sub.4 fatty acid esters to stage a).
    • 通过环烷基C1-C4脂肪酸酯的水解制备环烷醇的方法,其包括以下步骤:a)环烷基C1-C4脂肪酸酯与水在30℃至250℃的温度下反应 产生由环烷基C1-C4脂肪酸酯,环烷醇,C1-C4脂肪酸和水组成的反应混合物。 b)将步骤a)中获得的反应混合物在0℃至200℃的温度下分离成基本上由环烷基醇和环烷基C1-C4脂肪酸酯组成的顶相和基本上由水和C1组成的底部相 -C4脂肪酸。 c)通过蒸馏并将未转化的环烷基C1-C4脂肪酸酯再循环到步骤a)中,从步骤b)中获得的顶部相分离环烷醇。
    • 3. 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)。