Method for coating metal surfaces of substrates and objects coated according to said method

US10280513B2 · kind B2 · utility

Assignee

• CHEMETALL GMBH · DE

Inventors

• Daniel Wasserfallen · Mainz, DE
• Michael Schwamb · Frankfurt, DE
• Aliaksandr Frenkel · Frankfurt, DE
• Vera Sotke · Schwalbach am Taunus, DE
• Wolfgang Bremser · Münster, DE
• Martin Droll · Schlangen, DE
• Oliver Seewald · Marsberg, DE
• Ron Eilinghoff · Frankfurt, DE
• Stephanie Gerold · Paderborn, DE
• Evgenija Niesen · Soest, DE
• Lars Schachtsiek · Paderborn, DE
• Manuel Traut · Hamm, DE
• Philipp Klöpzig · Darmstadt, DE

Key dates

• Filing date: Jul 16, 2014
• Grant date: May 7, 2019
• Expiry date: Jan 8, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D9/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for coating surfaces, to a corresponding coating, and to the use of the objects coated according to said method. According to the invention, the method has or consists of the following steps: I. providing a substrate with a cleaned surface, II. contacting and coating the surfaces with an aqueous composition in the form of a dispersion and/or suspension, VI. if necessary rinsing the organic coating, and VII. drying and/or baking the organic coating or VIII. if necessary drying the organic coating and carrying out a coating process using a similar or additional coating composition prior to a drying and/or baking process, wherein between step I and step II, the coating process is carried out using an aqueous composition in the form of a dispersion and/or suspension on the basis of a colloidal silicate sol, which incorporates multivalent metal cations, or a silane- or silicate-modified polymer and if necessary a rinsing process is carried out.