Patent ID: 6541080
Filing Date: 2003-04-01
Classification: C23C

Abstract:
A process for direct metallizing of a surface of a plastic object comprising:roughening the surface of the plastic object by pickling; activating the surface of the plastic object with the aid of a colloidal or ionogenic aqueous solution of a first precious metal, which colloidal or ionogenic solution additionally contains a second base metal, whereby an activation coat containing the first precious metal and the second base metal is formed on the surface; providing electron conductivity on the activation coat with the aid of an alkaline treatment solution, with which the second base metal is dissolved at least partially from the activation coat, and an electron conducting substance is absorbed in the activation coat; contacting the activation coat having the electron conducting substance absorbed therein with colloidal or ionogenic aqueous solution of the first precious metal, which colloidal or ionogenic solution additionally contains the second base metal; providing further electron conductivity on the activation coat by further contacting with the alkaline treatment solution, with which the second base metal is further dissolved at least partially from the activation coat, and the electron conducting substance is further absorbed in the activation coat; and metallizing the activation coat after said further contacting with the alkaline treatment solution.