Powder self-adhesive high performance without promoters of adhesion is based on polyamide

摘要

Self-adherent powder composition comprises a homo or copolyamide (I) for the coating of metallic substrates. The composition is devoid of adhesion promoter with epoxy, alcohol and/or carboxylic acid group or its derivatives, and has a pressure of = 2200 MPa in dry and/or wet states at as per French National standard in International Organization for Standardization-527. An independent claim is included for a composite material comprising a metallic substrate directly coated by a layer of coating resulting from the melting of the composition.