REVERSE OSMOSIS MEMBRANE BASED ON COPOLYMER CONSISTING OF HYDROXYLALKYL METHACRYLATE AND METHACRYLIC ACID, PRODUCTION THEREOF AND PURIFICATION OF LIQUID BY USING SAME

摘要

A composite material suitable for use as a reverse osmosis membrane comprises a microporous substrate having a preferably ultrathin, water permeable desalinization film supported thereon, said film comprising copolymer containing units of methacrylic acid and units of ester or amide of methacrylic acid containing a hydroxyl group on said amide or ester moiety, the copolymer being crosslinked by ester formation. …??The composite material finds application in purifying concentrating liquids such as aqueous salinated solutions.