FIELD: membrane technics. SUBSTANCE: polymer substrate is stretched together with selective coating in wetting liquid media giving rise to coating swelling exceeding 5 wt % but not causing dissolution resulting in destroying continuity of coating. Manufactured membrane may find use in separating and concentrating gases, vapors, and liquids in chemical industry, biotechnology, and medicine. EFFECT: facilitated procedure.
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Authors
Dates
1998-02-20—Published
1994-12-29—Filed