COMPLEXING AGENT FOR TREATING METALLIC AND PLASTIC SURFACES

摘要

The invention relates to a composition for treating the surfaces of metals and for depositing metals or metal alloys on plastic surfaces. Said composition contains: a) at least one polymer, as constituent A, containing at least one structural unit of formula (I), wherein said structural unit can be part of a polymer main chain or can be bound to a polymer main chain by means of an anchor group, and M is hydrogen or an ammonium cation or a metal cation; b) water or another solvent, as constituent B, which is suitable for dissolving, dispersing, suspending or emulsifying the polymer (constituent A); c) optionally surface-active compounds, dispersants, suspension agents and/or emulsifying agents as constituent C; and either d) optionally a salt, an acid or a base based on transition metal cations, transition metal oxoanions, fluorometallates or lantanoids as constituent D, and/or e) at least one acid selected from the group consisting of phosphoric acid, sulphuric acid, sulfonic acid, nitric acid, hydrofluoric acid and hydrochloric acid as constituent E, or a base, and/or f) at least one metal oxide and/or metal salt as constituent F. The invention also relates to a method for treating the surfaces of metals, and to a method for depositing metals or metal alloys on a metallic or plastic surface, wherein the metallic or plastic surface is brought into contact with a polymer (constituent A). The invention further relates to the use of polymers (constituent A) for treating the surfaces of metals and for depositing metals or metal alloys on a metallic or plastic surface.