| abstract |
Process for manufacturing a membrane M comprising the following steps: a) preparation of a copolymer C, where said copolymer C comprises blocks of at least one polyarylene ether A and blocks of polyalkylene oxide PAO, where the content of polyalkylene oxide PAO in copolymer C is 30 to 90% by weight and where copolymer C is prepared in solvent L to produce solution S; b) provision of a solution of additive D comprising at least one polymer P selected from polyethersulfone, polysulfone and polyphenylenesulfone; c) mixing solution S and additive solution D; d) preparing a membrane by contacting the mixture of solution S and additive solution D with at least one coagulating agent, wherein said block of at least one polyarylene ether A is selected from polyethersulfone, polysulfone and polyphenylenesulfone or copolymers or mixtures of these, and wherein said polyalkylene oxide PAO is polyethylene oxide. |