| abstract |
A method of at least partially coating an electrically conductive substrate with an electrocoat material, the method comprising as a step (1) at least contacting a substrate with an aqueous coating composition (A), wherein step (1) (1b) at an applied voltage in the range of 1 to 50 V and then in the range of 50 to 400 V, which is first applied to the stages (1a) and (1b) Wherein the voltage applied to (1b) is greater than 10 V relative to the voltage applied to (1a), (A) is one or more cathodically depositable binder (A1), one without nitrogen atom (s) (A4), wherein (A3) and (A4) contain at least 50 mol% of (A4) an organic monocarboxylic acid or polycarboxylic acid and / or an anion thereof (A3) and trivalent bismuth (A3) and (A4) in the form of salts and / or complexes Wherein the molar fraction of any zirconium ion and aminopolycarboxylic acid arbitrarily present in (A) is in a stoichiometric amount relative to one another, wherein the mole fractions of (A4) present in (A) A method that is less than the mole fraction, in each case as much as 100 or 15 times or more; The use of (A) for at least partially coating a substrate with an electrocoat material; An at least partially coated electrically conductive substrate obtainable by the method; And articles or parts made from such a substrate. |