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:
May. 26, 2026
Filed:
Dec. 24, 2021
Applicant:
Hanwha Solutions Corporation, Seoul, KR;
Inventors:
Jinho Park, Daejeon, KR;
Kyuho Song, Daejeon, KR;
Ji Hye Choi, Daejeon, KR;
Namjin Jang, Daejeon, KR;
Assignee:
Hanwha Solutions Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 37/02 (2006.01); C07C 37/72 (2006.01);
U.S. Cl.
CPC ...
C07C 37/02 (2013.01); C07C 37/72 (2013.01);
Abstract
The present invention relates to a cresol preparation method, wherein DTE, a byproduct produced by the cresol preparation method, is separated and recycled to a reaction step, thereby inhibiting the production of DTE. The cresol preparation method according to the present invention is a process in which a cresol is prepared by a reaction of halo-toluene and a basic aqueous solution, and the method comprises a step of separating DTE, a byproduct of the process, and re-feeding DTE to the reaction step of halo-toluene and the basic aqueous solution.