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. 28, 2014
Filed:
Feb. 05, 2007
Thomas Häring, Stuttgart, DE;
Jochen Kerres, Ostfildern, DE;
Frank Schönberger, Saarlouis, DE;
Martin Hein, Stuttgart, DE;
Thomas Häring, Stuttgart, DE;
Jochen Kerres, Ostfildern, DE;
Frank Schönberger, Saarlouis, DE;
Martin Hein, Stuttgart, DE;
Other;
Abstract
Various blends and blend membranes from low-molecular hydroxymethylene-oligo-phosphonic acids R—C(POH)(OH)and polymers, the group R representing any organic group, the polymers containing cation exchanger groups or their nonionic precursors of the type SOX, X being a halogen, OH, OMe, NRR, ORwith Me being any metal cation or ammonium cation, R, Rbeing H or any aryl- or alkyl group, PDX, COX and/or basic groups such as primary, secondary or tertiary amino groups, imidazole groups, pyridine groups, pyrazole groups etc. and/or OH groups. Such membranes may also include polymers that are modified with the 1-hydroxymethylene-1,1-bisphosphonic acid group. The polymers may be formed by reacting polymers which contain carboxylic acid groups or carboxylic halide groups —COHal (Hal=F, Cl, Br, I) with phosphite compounds or by reacting polymeric aldehydes or polymeric keto compounds with phosphite esters while carrying out an amine catalysis, an oxidation of the intermediary hydroxyphosphonic acid with MnOor another oxidant.