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. 05, 2006
Filed:
Dec. 08, 2004
Michael Riedel, Bay City, TX (US);
Ernst Wiebus, Oberhausen, DE;
Carl D Frohning, Wesel, DE;
Wilfried Fenske, Hamminkeln, DE;
Florian Rampf, Burghausen, DE;
Jurgen Herwig, Hunxe, DE;
Helmut Bahrmann, Hamminkeln, DE;
Klaus Bergrath, Oberhausen, DE;
Wolfgang Zgorzel-ski, Oberhausen, DE;
Robert Eckl, Munich, DE;
Hans Bohnen, Moers, DE;
Richard Fischer, Oberhausen, DE;
Kurt Schalapski, Oberhausen, DE;
Wolfgang Greb, Dinslaken, DE;
Michael Riedel, Bay City, TX (US);
Ernst Wiebus, Oberhausen, DE;
Carl D Frohning, Wesel, DE;
Wilfried Fenske, Hamminkeln, DE;
Florian Rampf, Burghausen, DE;
Jurgen Herwig, Hunxe, DE;
Helmut Bahrmann, Hamminkeln, DE;
Klaus Bergrath, Oberhausen, DE;
Wolfgang Zgorzel-Ski, Oberhausen, DE;
Robert Eckl, Munich, DE;
Hans Bohnen, Moers, DE;
Richard Fischer, Oberhausen, DE;
Kurt Schalapski, Oberhausen, DE;
Wolfgang Greb, Dinslaken, DE;
Abstract
A process for preparing sulfonated arylphosphines by reaction of arylphosphines with oleum, wherein, after reaction of the arylphosphines with oleum, the sulfonation mixture is firstly diluted with water, an inert gas stream is then passed through the diluted sulfonation mixture until SOis no longer liberated from the diluted sulfonation mixture and the latter is then worked up further in a customary manner and its use.