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:
Mar. 17, 2009
Filed:
May. 02, 2007
Hae-seok Ji, Ulsal, KR;
Ook-jae Cho, Ulsan, KR;
Jae-gug Ryu, Ulsan, KR;
Young-hoon Ahn, Ulsan, KR;
Bong-suk Kim, Ulsan, KR;
Dong-hyun Kim, Ulsan, KR;
Hae-Seok Ji, Ulsal, KR;
Ook-Jae Cho, Ulsan, KR;
Jae-Gug Ryu, Ulsan, KR;
Young-Hoon Ahn, Ulsan, KR;
Bong-Suk Kim, Ulsan, KR;
Dong-Hyun Kim, Ulsan, KR;
Foosung Co., Ltd., Kangnam-gu, KR;
Abstract
Disclosed herein is a method of preparing a perfluoroalkadiene. A dihaloperfluorocarbon used as a starting material is added dropwise to a nonpolar organic solvent, a metal powder and an organic metal compound. The dihaloperfluorocarbon is slowly added dropwise in a temperature range from 30° C. to 150° C. for a certain period of time. Moreover, the nonpolar organic solvent used may be benzene, toluene, xylene, etc., and the organic metal compound is used by being dissolved in ethyl ether or tetrahydrofuran at a concentration of 1 to 3M. The metal powder used may be Mg, Zn, Cd, etc.