FIELD: process engineering.
SUBSTANCE: invention relates to composition for production of membranes. Proposed composition comprises highly cross-linked polymer, linear polymer and solvent. Highly cross-linked polymer represents polyamide, complex polyether amide, polyimidoamine, polypropylene amine, polyimide, simple polyether amide, polysilane, polysiloxane, polysulfone, polyurethane and/or polyurea. Linear polymer represents polyimide, simple polyesterimide, polysulfone, polyarylate, simple polyetherarylate, polycarbonate, polyprorrylon, polyacetate, polyethylene oxide, phenol ether resin, polyphenilethylenesulphide, PEEK, polybenzimidazole, polyoxadiozole and/or polyaniline. Note here that said composition is a solution while linear polymers represent physical mix with highly cross-linked polymers. Membrane is moulded from said composition, or composition is processed to hollow fiber.
EFFECT: high selectivity, permeability, strength and longer life.
24 cl, 9 ex
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