Patent ID: 6800331
Filing Date: 2004-10-05
Classification: C08J,G02F

Abstract:
A method of improving the bonding between a polymeric surface and a coating or adhesive comprising the steps of:(i) providing the polymeric surface with functional groups; and (ii) contacting the surface provided with functional groups with (a) at least one 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, (b) at least one crosslinking agent reactive with the polyamine so that a bond is formed between the polyamine and the crosslinking agent wherein component (b) is contacted with the surface either in admixture with component (a) or following contact of the surface with component (a) and (c) when the crosslinking agent is an organosilane optionally including a co-crosslinker that is reactive with the crosslinking agent to form a crosslinked network on the polymeric surface; and (iii) contacting the crosslinked network with an adhesive or coating to form a bond between the polymeric surface and said adhesive or coating and wherein the coating is selected from the group consisting of an ink, paint, varnish, lacquer, metallic coating, and an inorganic oxide coating.