Patent ID: 8778458

Claim:
A method of promoting the adhesion between a coating comprising at least one synthetic, semisynthetic or natural polymer and a substrate surface coated therewith, wherein a separately formed adhesion promoter is either added to the coating or applied to the substrate surface before the coating is applied, said adhesion promoter being formed of a.) at least one optionally oligomeric addition product containing no terminal C═C double bonds of at least one aminosilane and/or thiosilane containing at least one hydrolyzable silane group and at least one further monoamine and/or polyamine having at least two amino groups, the monoamine and/or polyamine comprising no hydrolyzable silane group and containing at least one primary or secondary amino group, with at least one compound containing at least two terminal, ethylenically unsaturated double bonds; and/or of b.) at least one optionally oligomeric addition product containing no terminal C═C double bonds of at least one isocyanatosilane and/or epoxy silane containing at least one hydrolyzable silane group with at least one compound containing at least one terminal hydroxyl group and at least one terminal, ethylenically unsaturated double bond, in combination with at least one monoamine and/or polyamine having at least two amino groups, the monoamine and/or polyamine comprising no hydrolyzable silane group and containing at least one primary or secondary amino group, said adhesion promoter being added to said coating or applied to said surface before applying the coating in an amount of less than 5% by weight, based on the total weight of the coating.