Patent ID: 8007834

Claim:
A coating composition comprising (a) one or more microbicide, (b) one or more soluble polymer comprising, as polymerized units, one or more monomer with one or more pendant heterocycle, wherein said heterocycle has one or more hetero atom selected from the group consisting of N, O, S, and combinations thereof, wherein said polymer has no anionic groups, with the proviso that, if every one of said pendant heterocycles is saturated, then said soluble polymer additionally comprises one or more polymerized units of one or more heterocycle-free vinyl monomer, and (c) solvent, wherein said polymer is dissolved in said solvent; wherein said composition contains no polymeric biguanide; and wherein 50% or more of said microbicide, by weight based on the total weight of microbicide, is not covalently bonded to any polymer, wherein said microbicide comprises one or more quaternary ammonium microbicide, one or more phenol microbicide, or a mixture of one or more quaternary ammonium microbicide with one or more phenol microbicide.