Preparation of functional polymeric surface

Abstract

A method of modifying a polymeric surface of a substrate including: (iii) providing the polymeric surface with functional groups; and (iv) contacting the surface with (a) a polyamine compound reactive with the surface functional groups said polyamine comprising at least four amine groups including at least two amine groups selected from primary and secondary amine groups and (b) a crosslinking agent reactive with the polyamine; to provide a crosslinked network grafted to the substrate surface.

Dependencies are inferred from the claim text.