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:
Sep. 11, 2007
Filed:
Mar. 07, 2005
Byung Won Woo, Ulsan, KR;
Seoung Woo Yoon, Ulsan, KR;
Jun Ho Lee, Ulsan, KR;
Soon Hong Park, Ulsan, KR;
Nak Joon Jang, Ulsan, KR;
Hyo Jin Yoon, Ulsan, KR;
Byung Won Woo, Ulsan, KR;
Seoung Woo Yoon, Ulsan, KR;
Jun Ho Lee, Ulsan, KR;
Soon Hong Park, Ulsan, KR;
Nak Joon Jang, Ulsan, KR;
Hyo Jin Yoon, Ulsan, KR;
Ulsan Chemical Co., Ltd., Ulsan, KR;
Abstract
The method of producing 4-fluoroethylene carbonate (FEC), in which ethylene carbonate (EC) reacts with a mixture of fluorine and nitrogen gases, includes feeding a mixture gas of fluorine gas and nitrogen gas into a reactor having ethylene carbonate charged therein, so as to react the ethylene carbonate with the mixture gas of the fluorine gas and the nitrogen gas. The mixture gas fed in the reactor is regulated to have a desired bubble size while passing through a gas bubble regulating column, in which a packing for a packed column is packed. In the method, EC directly reacts with F/Nmixture gas to produce FEC, thus a purification process is simple and it is possible to produce FEC at high conversion efficiency and selectivity.