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:
Jan. 03, 2017
Filed:
Jul. 27, 2015
Central Glass Company, Limited, Ube-shi, Yamaguchi, JP;
Hideaki Imura, Fujimino, JP;
Naoto Takada, Saitama, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
A production method of 2-chloro-1,3,3,3-tetrafluoropropene (1224) according to the present invention includes bringing 2,3-dichloro-1,1,1,3-tetrafluoropropane (234da) into contact with an inorganic base having a pKa of 4.8 or greater in an aqueous medium in the presence of a phase transfer catalyst. Preferably, the inorganic base has a pKa of 10 or greater. Further, the phase transfer catalyst is preferably at least one selected from the group consisting of tetrabutylammonium bromide, methyltri-n-octylammonium chloride, benzyltrimethylammonium chloride and tetraethylammonium chloride. It is possible by this method to selectively produce 1224 from 234da.