Patent ID: 9023557
Filing Date: 2015-05-05
Classification: B01D,C08J,H01M,H04B,H04W,Y02E,Y02P

Abstract:
1. A process for preparing a solution of sulfonated polymer and a basic phosphonic acid, comprising: dissolving the sulfonated polymer in an aprotic solvent: and adding the basic phosphonic acid to this solution, wherein the basic phosphonic acid comprises an aminophosphonic acid selected from the group consisting of: aminomethylene phosphonic acid, amino-tris(methylene phosponic acid) (ATMP), diethylentriaminopenta-(methylene phosphonic acid) (DTPMP), ethylenediamino-tetra-(methylene phosponic acid), pentaethylenehexamine-octakis-methylene phosphonic acid, dimethylamino-methylene-diphosphonic acid (MAMDP) and aminoethylene bisphosphonic acid.