Method for coating surfaces and use of the objects coated using said method

A method for electroless coating of substrates, comprising the steps of:

• I. providing a substrate,
• II. optionally cleaning the substrate,
• III. applying a first aqueous composition comprising an activating agent to form an activating coat on the substrate,
• IV. optionally drying the activating coat,
• V. rinsing the activating coat, the activating coat not being entirely removed,
• VI. contacting and coating of activated surfaces that remain after rinsing with an aqueous composition in the form of a solution, emulsion or suspension to form an organic secondary coat,
• VII. optionally rinsing the secondary coat, and
• VIII. optionally drying the secondary coat,
• wherein the activating coat is formed with an aqueous activating agent in the form of a solution, emulsion and/or suspension which comprises at least one cationic polyelectrolyte and/or at least one cationic salt in solution in water;
• wherein the aqueous composition to form a secondary coat has constituents which can be precipitated, deposited or salted out and which are anionically, zwitterionically, sterically and/or cationically stabilized, where anionically and cationically stabilized constituents in the aqueous composition do not adversely affect one another;
• and
• wherein the dry film formed in this procedure or subsequently, comprising the secondary coat or comprising the activating coat and the secondary coat, has a thickness of at least 1 μm.