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. 01, 2021
Filed:
Jul. 30, 2020
Korea Institute of Science and Technology, Seoul, KR;
Hyun Joo Lee, Seoul, KR;
Ung Lee, Seoul, KR;
He Won Lee, Seoul, KR;
Tran Huyen Dang, Seoul, KR;
Seok Hyeon Cheong, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A method for producing a methanol precursor, methyl trifluoroacetate, having high-purity includes the steps of (a) preparing methyl bisulfate by mixing a catalyst with an acid solution comprising a sulfur-containing acid to provide a first mixture and supplying methane gas to the first mixture to prepare the methyl bisulfate; and (b) preparing methyl trifluoroacetate (CFCOCH) by adding trifluoroacetic acid (CFCOH) to the first mixture including the methyl bisulfate to provide a second mixture and distilling the second mixture under heating to prepare, separate and purify the methyl trifluoroacetate (CFCOCH). Methanol may be produced by adding water to the methyl trifluoroacetate (CFCOCH). A methyl ester represented by Formula 2 below may be produced by adding a carboxylic acid represented by Formula 1 below to the methyl trifluoroacetate (CFCOCH):RCOH  (1),