Invention Grant
- Patent Title: Method for preparation of 1,4-cyclohexanedimethanol
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Application No.: US17293482Application Date: 2019-12-16
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Publication No.: US11629112B2Publication Date: 2023-04-18
- Inventor: Namjin Jang , Eun Jeong Kim , Sun Uk Lee , Jong Kwon Lee
- Applicant: HANWHA SOLUTIONS CORPORATION
- Applicant Address: KR Seoul
- Assignee: HANWHA SOLUTIONS CORPORATION
- Current Assignee: HANWHA SOLUTIONS CORPORATION
- Current Assignee Address: KR Seoul
- Agency: Harvest IP Law LLP
- Priority: KR10-2018-0171228 20181227
- International Application: PCT/KR2019/018516 WO 20191216
- International Announcement: WO2020/138973 WO 20200702
- Main IPC: C07C51/36
- IPC: C07C51/36 ; C07C51/353 ; C07C29/149 ; C07C29/158 ; C07C29/56 ; B01J21/06 ; B01J23/44 ; B01J23/62

Abstract:
The present disclosure relates to a method for preparation of 1,4-cyclohexanedimethanol. According to the present disclosure, two step reduction reactions are conducted using terephthalic acid as starting material, and an isomerization process for increasing the rate of trans isomers of CHDA is introduced therebetween, thereby providing a method capable of stably preparing CHDM with high rate of trans isomers.
Public/Granted literature
- US20220127212A1 METHOD FOR PREPARATION OF 1,4-CYCLOHEXANEDIMETHANOL Public/Granted day:2022-04-28
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