There is provided 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, and wherein said polymer has no anionic groups, 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.本發明提供一種塗覆組成物,包括:(a)一種或多種殺微生物劑,(b)一種或多種可溶性聚合物,其包括作為聚合單元之含有一個或多個雜環側基的一種或多種單體,其中,該雜環具有一個或多個選自由N、O、S及其組合所組成群組之雜原子,其中,該可溶性聚合物不具有陰離子基團,以及(c)溶劑,其中,該聚合物係溶於該溶劑;其中,該組成物不含聚合物縮二胍;以及其中,以殺微生物劑總重量為基準計,50重量%或更多該殺微生物劑不與任何聚合物共價鍵聯。
