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:
Nov. 24, 2009
Filed:
Mar. 28, 2008
Shinya Higuchi, Chiyoda-ku, JP;
Jun Hoshikawa, Chiyoda-ku, JP;
Hiroki Kamiya, Chiyoda-ku, JP;
Yasuhiko Matsuoka, Chiyoda-ku, JP;
Hiroshi Funaki, Chiyoda-ku, JP;
Shinya Higuchi, Chiyoda-ku, JP;
Jun Hoshikawa, Chiyoda-ku, JP;
Hiroki Kamiya, Chiyoda-ku, JP;
Yasuhiko Matsuoka, Chiyoda-ku, JP;
Hiroshi Funaki, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A simple and efficient method for regenerating a basic anion-exchange resin, whereby at the time of removing a fluorinated emulsifier from a basic anion-exchange resin having the fluorinated emulsifier adsorbed thereon, it is unnecessary to provide a safety device/recovery technique necessary for handling an organic solvent by the use of a combustible organic solvent represented by an alcohol, and a burden imposed by e.g. treatment against COD load, is eliminated. A basic anion-exchange resin having a fluorinated emulsifier adsorbed thereon is contacted with an aqueous alkaline solution having a temperature of from 60 to 105° C. to elute the fluorinated emulsifier thereby to regenerate the basic anion-exchange resin.