Polymer, comprising i) at least one oxazoline according to formula wherein R1, R2, R3 and R4 independently denote a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, a phenyl group, or a substituted phenyl group, and R5 denotes a noncyclic organic group having an unsaturated bond reactive in radical polymerization, ii) optionally at least one antiadhesive monomer, iii) optionally at least one biocidal monomer, iv) optionally at least one further monomer, wherein said polymer comprises at least one monomer selected from monomers ii) and iii).
