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:
Feb. 09, 2021
Filed:
Dec. 14, 2018
Applicant:
SK Chemicals Co., Ltd., Seongnam-si, KR;
Inventors:
Assignee:
SK CHEMICALS CO.. LTD., Seongnam-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/347 (2006.01); C07C 67/475 (2006.01); C07C 69/017 (2006.01); C07C 69/82 (2006.01);
U.S. Cl.
CPC ...
C07C 67/347 (2013.01); C07C 67/475 (2013.01); C07C 69/017 (2013.01); C07C 69/82 (2013.01);
Abstract
A method for cycloaddition of dimethyl muconate is disclosed. According to the method, a direct transferring of a solid phase trans,trans-dimehtyl muconate into a reactor pre-filled with ethylene gas increases the efficiency of the reaction and suppress side reactions resulting an improvements in yield and purity. Furthermore, the method is capable of obtaining a high yield of dimethylcyclohex-2-en-1,4-dicarboxylate at a lower cost, and therefore is also useful for the mass synthesis of dimethyl terephthalate.