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:
Apr. 24, 2012
Filed:
Jul. 13, 2007
Dieter Lehmann, Coswig, DE;
Jochen Meier-haack, Dresden, DE;
Claus Vogel, Dresden, DE;
Wladimir Butwilowski, Dresden, DE;
Dieter Lehmann, Coswig, DE;
Jochen Meier-Haack, Dresden, DE;
Claus Vogel, Dresden, DE;
Wladimir Butwilowski, Dresden, DE;
Leibniz-Institut fuer Polymerforschung Dresden E.V., Dresden, DE;
Abstract
The invention relates to the field of polymer chemistry and relates to sulfonated polyarylene compounds such as can be used for example in ion exchange membranes in fuel cells, as well as a method for the production thereof and the use thereof. The object of the present invention is to disclose hydrolytically and thermally resistant sulfonated polyarylene compounds with a defined degree and position of sulfonation, from which membrane materials with an improved resistance to hydrolysis can be produced. The object is attained through sulfonated polyarylene compounds according to at least one of the general formulas (I)-(IV).