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:
Jul. 15, 2008
Filed:
Mar. 08, 2007
Hsiao-ping Huang, Taipei, TW;
Cheng-ching Yu, Taipei, TW;
Ming-jer Lee, Taipei, TW;
Jyun-hong Chen, Taipei, TW;
Jian-kai Cheng, Changhua County, TW;
Hsiao-Ping Huang, Taipei, TW;
Cheng-Ching Yu, Taipei, TW;
Ming-Jer Lee, Taipei, TW;
Jyun-Hong Chen, Taipei, TW;
Jian-Kai Cheng, Changhua County, TW;
National Taiwan University, Taipei, TW;
Abstract
A transesterification process of methyl acetate is provided. The process comprises: (a) performing a first reactive distillation of a methyl acetate solution and a first alcohol to generate a first ester and a first mixture; (b) performing a first distillation of a first part of the first mixture to generate a second mixture; and (c) performing a second reactive distillation of a first part of the second mixture and a second alcohol to generate a second ester; wherein the respective one of the first and second alcohols is a limiting reagent. The transesterification process provided in the present invention could highly reduce the investing production cost of the transesterification of the by-product, methyl acetate, in the conventional polyvinyl alcohol plants.