| abstract |
The invention relates to polymer mixtures that contain the components (a) 40 to 95% by weight of at least one polyaryl ether copolymer which is constituted of (a1) 50 to 99.9% by weight of elements of formula (I) and 0 to 40% by weight of additional elements Il selected from segments of one or more thermoplastic polymers, and (a2) 0.1 to 10% by weight of at least one crosslinker V having at least three hydroxy functionalities, the at least one crosslinker V in component (a) being present in reacted form and the sum of weight percents of (a1) and (a2) being 100% by weight, and (b) 5 to 60% by weight of at least one hydrophilic polymer selected from polyvinyl pyrrolidone, polyvinyl pyrrolidone copolymers, polyethylene glycol, polypropylene glycol, copolymers of ethylene glycol and propylene glycol, water-soluble cellulose derivatives, polyamide, polyvinyl acetate and polyvinyl alcohol, the sum of weight percents of components (a) and (b) being 100% by weight. The invention also relates to separate combinations of the above components (a) and (b) for their joint use. The invention further relates to polymer membranes that contain the above polymer mixtures and to a method for producing the same and to the use of the polymer membranes for producing dialysis filters. The invention also relates to dialysis filters that contain the above hollow fiber membranes. |