In hemodialysis production manner null of suitable transmitted selective inequality equal/film and the said

摘要

A permselective asymmetric membrane suitable for hemodialysis, hemodiafiltration and hemofiltration of blood, comprised of a hydrophobic first polymer, a hydrophilic second polymer and suitable additives. The membrane is characterized by a three-layer structure, comprising a first layer in the form of dense rather thin skin, responsible for the sieving properties, a second layer in the form of a sponge structure, having a high diffusive permeability and serving as a support for said first layer, and a third layer in the form of a finger structure, giving the membrane a mechanical stability. A process for the manufacturing of the above membrane is also described.