Positively charged polyvinylidene fluoride membrane

Details Positively charged polyvinylidene fluoride membrane Positively charged polyvinylidene fluoride membrane

C - Chemistry, Metallurgy

08

J

C08J 9/36 (2006.01) A61K 31/13 (2006.01) B01D 67/00 (2006.01) B01D 69/10 (2006.01) B01D 71/34 (2006.01)

Patent

CA 2114668

ABSTRACT A filter medium comprising a microporous polyvinylidene fluoride membrane and a polymer containing positively charged quaternary ammonium groups covalently bonded to the membrane, and a method of using the filter medium to treat a composition, particularly a biological or pharmaceutical composition such as an ophthalmic composition.

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