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:
May. 06, 2014
Filed:
Aug. 05, 2010
Kuniaki Okamoto, Kawagoe, JP;
Tsutomu Watahiki, Kawagoe, JP;
Motoshige Sumino, Kawagoe, JP;
Wako Pure Chemical Industries, Ltd., Osaka, JP;
Abstract
Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof. Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R's and T are as described in claim) with a tertiary amine represented by a general formula [2] (in the formula, definitions of Rto Rare as described in claim), and a disulfonic acid ester represented by a general formula [1'] (in the formula, two R's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5).