FIELD: filtering.
SUBSTANCE: method comprises preparing moulding solution by solving the diaphragm-forming polymer, supplying the modifying addition made of amino groups with a capacity of 1.1-6.6 MeV/g in amount of (in mass parts) 2.0-30.0 per 100 of diaphragm-forming polymer, and subsequent moulding and drying.
EFFECT: expanded functional capabilities.
2 cl, 1 tbl, 6 ex
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