| 摘要 |
A branched polyaryl ether copolymer comprises building blocks (I,II), and 0.1-10 wt.% of building blocks derived from compounds having at least three hydroxy functions. A branched polyaryl ether copolymer comprises building blocks of general formulae (I,II), and 0.1-10 wt.% of building blocks derived from compounds having at least three hydroxy functions. t,q : 0-3; m : 0-4; n : 1-4; Q,T,Y : -O-, -S-, -SO 2-, S=O, C=O, -N=N-, -R a>C=CR b>, or -CR c>R d>-; R a>,R b>hydrogen, or 1-12C alkyl group; R c>,R d>H, 1-12C alkyl, 1-12C alkoxy or 6-18C aryl group, optionally substituted by fluorine and/or chlorine atom, or R c>and R d>together with the carbon atom to which they are bonded form 3-12C cycloalkyl group optionally substituted by 1-6C alkyl group(s), at least one of Q, T and Y is different from -O- and at least one of Q, T and Y is -SO 2-;and Ar,Ar 1>6-18C aryl optionally substituted by 1-12C alkyl, 6-18C aryl, 1-12C alkoxy or halogen. Independent claims are included for the following: (1) process for preparing polyaryl ether copolymers by reacting polyaryl ether copolymers made up of building blocks of the general formula II and B, with sulfuric acid; (2) polymer blend comprising polyaryl ether copolymer(s) and polymer(s) selected from polyether sulfones, polysulfones, polyether ketones, polyetherimides, polyimides, polybenzimidazoles, polyamidimides and polyamides; (3) process for preparing polymer blends, which involves mixing polyaryl ether copolymers in solution with further polymer or polymers in solution; (4) method of using a polyaryl ether copolymer in the production of membranes; and (5) membrane comprising polyaryl ether copolymer(s). [Image]. |
