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:
Aug. 02, 2011
Filed:
Feb. 04, 2010
Masao Iwaya, Tokyo, JP;
Masao Iwaya, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
Methods for preparing an ammonium salt and a lithium salt of a fluorinated bis-sulfonylimide by a practical and efficient method with a high yield with a small number of steps. Further, a high purity ammonium salt of a fluorinated bis-sulfonylimide useful for the method for producing a lithium salt is provided. A method for producing a purified particulate solid (II) of a salt represented by the formula (1), which comprises suspending a particulate solid (I) of a salt represented by the formula (1) in a solvent comprising an etheric oxygen atom-containing compound, and separating the solvent by filtration:[HNR][Q-SO—N—SO-Q]  (1)wherein each of R's which may be the same or different, is a hydrogen atom or a Calkyl group, and each of Qand Qwhich are independent of each other, is a monovalent fluoroorganic group, or Qand Qtogether form a bivalent fluoroorganic group.