[EN] PROCESS FOR THE PREPARATION OF 1,3-CYCLOHEXANEDIMETHANOL FROM ISOPHTHALIC ACID<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 1,3-CYCLOHEXANEDIMÉTHANOL À PARTIR D'ACIDE ISOPHTALIQUE
申请人:EASTMAN CHEM CO
公开号:WO2013019442A1
公开(公告)日:2013-02-07
Disclosed is a process for the preparation of 1,3-cyclohexanedimethanol from isophthalic acid. Isophthalic acid is esterified with (3-methylcyclohexyl)methanol and the isophthalate ester hydrogenated to 1,3-cyclohexanedimethanol in a 2-stage process. The (3-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. Also disclosed is a method for purifying and recovering the 1,3-cyclohexanedimethanol product.
本发明公开了一种从苯二甲酸制备1,3-环己二甲醇的方法。将苯二甲酸与(3-甲基环己基)甲醇酯化,然后将苯二甲酸酯氢化为1,3-环己二甲醇,这是一个2阶段过程。在氢化步骤中形成的(3-甲基环己基)甲醇被回收到酯化反应中。本发明还公开了一种纯化和回收1,3-环己二甲醇产品的方法。