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US 2023/0053503 A1Published application
Method for preparing 1,4-cyclohexanedimethanol
AssigneeHanwha Solutions Corporation
InventorsNamjin JANG, Sun Uk LEE, Eun Jeong KIM, Jong Kwon LEE
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Abstract
This invention relates to a method for preparing 1,4-cyclohexanedimethanol(CHDM), more specifically to a method for preparing 1,4-cyclohexanedimethanol having a high rate of trans isomers without an isomerization reaction step.
Claims10
A method for preparing 1,4-cyclohexanedimethanol comprising steps of:
- supplying a reaction solution comprising 1,4-cyclohexane dicarboxylic acid(CHDA) comprising cis isomers and trans isomers, a hydrogenation catalyst, and water to a reactor equipped with a stirrer;
- supplying hydrogen gas to the reactor in which the reaction solution has been supplied;
- and
- conducting a hydrogenation reaction by stirring the stirrer of the reactor, to prepare 1,4-cyclohexanedimethanol(CHDM),
- wherein the 1,4-cyclohexane dicarboxylic acid(CHDA) comprising cis isomers and trans isomers is included in the amount of 5 to 30 wt %, based on the total weight of the 1,4-cyclohexane dicarboxylic acid and water.
2 more elements
Dependencies are inferred from the claim text.