Microbial growth enhancement from a dry film additive

A hyperbranched polymer based on one or more repeating units of an ABx type monomer, wherein A and B are functional groups and x is greater than or equal to 2, and wherein the A functional group reacts with the B functional group, and wherein B is fractionally functionlized with a plurality of functional groups, wherein the plurality of functional groups comprise:

• a first functional group comprising a C6-C30 alkyl chain attached to the repeating unit through a carbonyl group (C═O) via an ester linkage,
• a second functional group comprising a partially fluorinated or perfluorinated C3-C20 alkyl chain attached to the repeating unit through a carbonyl group (C═O) via an ester linkage, and
• a third functional group comprising a stabilized radical source attached to the repeating unit via a C0-C6 tether, wherein the stabilized radical source is a 5 or 6 member heterocycle of carbon and nitrogen, which may be substituted with alkyl groups α to the stabilized radical that sterically stabilizes an oxygen free radical, or a 5 to 8 member chloroamide heterocycle of carbon and nitrogen that is attached to the repeating unit via a C2-C6 tether.