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. 16, 2015
Filed:
Feb. 07, 2012
Jung-chung Wu, Chiayi, TW;
Jen-chun Chang, Chiayi, TW;
Ming-yu Huang, Chiayi, TW;
Jann-chen Lin, Chiayi, TW;
Jung-Chung Wu, Chiayi, TW;
Jen-Chun Chang, Chiayi, TW;
Ming-Yu Huang, Chiayi, TW;
Jann-Chen Lin, Chiayi, TW;
CPC CORPORATION, TAIWAN, Taipei, TW;
Abstract
The present invention uses a nitrogen-containing organic compound to be reacted with an alkyl sultone to obtain a zwitterion compound. The zwitterion compound is reacted with a heteropoly acid (HPA) to obtain an ionic liquid HPA (IL-HPA). The IL-HPA is used for acetylation of polyol and HOAc for obtaining polyol acetate. The IL used in the reaction can be recycled. Thus, problems of product separation, waste acid handling, and corrosion of facilities are solved and production through esterification is improved with a green catalysis.