The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2026
Filed:
Dec. 28, 2020
Applicant:
Hanwha Solutions Corporation, Seoul, KR;
Inventors:
Sun UK Lee, Daejeon, KR;
Namjin Jang, Daejeon, KR;
Eun Jeong Kim, Daejeon, KR;
Jong Kwon Lee, Daejeon, KR;
Assignee:
HANWHA SOLUTIONS CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/149 (2006.01); B01J 21/18 (2006.01); B01J 23/46 (2006.01); B01J 23/62 (2006.01); C07C 51/36 (2006.01);
U.S. Cl.
CPC ...
C07C 29/149 (2013.01); B01J 21/18 (2013.01); B01J 23/462 (2013.01); B01J 23/626 (2013.01); C07C 51/36 (2013.01); C07C 2601/14 (2017.05);
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, wherein two-step hydrogenation reactions and a purification step are conducted using terephthalic acid as starting material.