Process for the preparation of 1,4-cyclohexanedimethanol

制备1,4-环己烷二甲醇的方法

Abstract

Disclosed is a process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid. Terephthalic acid is esterified with (4-methylcyclohexyl)methanol and the terephthalate ester hydrogenated to 1,4-cyclohexanedimethanol in a 2-stage process. The (4-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. After removal of the (4- methylcyclohexyl)methanol from the crude hydrogenation product, the 1,4- cyclohexanedimethanol product can be recovered and purified by a phase separation and distillation.
公开了一种由对苯二甲酸制备1,4-环己烷二甲醇的方法。在2步法中,对苯二甲酸与(4-甲基环己基)甲醇发生酯化,对苯二甲酸酯氢化为1,4-环己烷二甲醇。在所述氢化步骤中形成的(4-甲基环己基)甲醇再循环至所述酯化反应中。在从粗氢化产物中移出(4-甲基环己基)甲醇之后,可以通过相分离和蒸馏回收并纯化1,4-环己烷二甲醇产物。

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-105582961-AMay 18, 2016中国石油化工股份有限公司, 中国石油化工股份有限公司上海石油化工研究院1,4-cyclohexan dimethyl dicarboxylate hydrogenation catalyst