This application provides reactive, flexible, water-resistant hydroxyethylpyrrolidone methacrylate/glycidyl methacrylate copolymers having the structure:wherein a and b are integers, the sum of which less than 100, covalently linked to active agents that are useful in a wide variety of compositions. The present application also discloses hydroxyethylpyrrolidonemethacrylate/glycidyl methacrylate copolymer convently linked to one or more surface active moiety having a structure:wherein a, b, and c are integers, the sum of which equals 100, and M is a surface-active moiety.
