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:
Jan. 15, 2013
Filed:
Sep. 28, 2009
Applicants:
Martin Sukopp, Mannheim, DE;
Alexander Korte, Neustadt, DE;
Stefan Fülster, Worms, DE;
Michael Keil, Freinsheim, DE;
Michael Rack, Eppelheim, DE;
Inventors:
Martin Sukopp, Mannheim, DE;
Alexander Korte, Neustadt, DE;
Stefan Fülster, Worms, DE;
Michael Keil, Freinsheim, DE;
Michael Rack, Eppelheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 3/36 (2006.01); C07D 231/10 (2006.01); C07C 313/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for purifying trifluoromethanesulfinic acid by azeotropic distillation with an aromatic solvent, to processes for preparing purified trifluoromethanesulfinic acid and to the use of the purified trifluoronnethanesulfinic acid for preparing trifluoromethylsulfinylated pyrazole derivatives, especially fipronil.