Active substance-containing polymer gel

Details Active substance-containing polymer gel Active substance-containing polymer gel

C - Chemistry, Metallurgy

08

L

C08L 33/14 (2006.01) A61K 9/06 (2006.01) A61K 47/48 (2006.01) C08F 212/14 (2006.01) C08F 220/28 (2006.01) C08L 39/00 (2006.01)

Patent

CA 2108920

ABSTRACT An active substance-containing polymer gel characterized by comprising an active substance with an anionic substituent thereon, held by a copolymer gel through adsorption therein, said copolymer gel being prepared by copolymerization of a monomer mixture containing at least a hydrocarbon group-containing (meth) acrylate which has one or more hydroxyl groups and has optionally an intramolecular ether linkage, and a monomer with a quaternary ammonium salt on the side chain is capable of strongly holding in the copolymer gel, the anionic functional group-containing active substance to produce a significant sustained release effect and of being worked into any desired form in an extremely easy manner.

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