use of thermoplastic compositions in powder form on the basis of polyamides or polyetheresteramiden for coating metallic substrates, thermoplastic accessories compositions in powder form on the basis of polyamides and their manufacturing method

摘要

The invention relates to thermoplastic compositions in powder form based on polyamide and/or polyetheresteramide and containing resins obtained by polycondensation of aromatic sulphonamide compounds and of aldehydes or of dicarboxylic acids. The invention also relates to a number of processes for obtaining these powders and to their use for coating metal substrates without the need for any adhesion primer.