Process for coating metallic surfaces with an aqueous composition, and this composition

US8784991B2 · kind B2 · utility

Assignee

• CHEMETALL GMBH · DE

Inventors

• Thomas Kolberg · Heppenheim, DE
• Manfred Walter · Nuremberg, DE
• Peter Schubach · Nidderau, DE

Key dates

• Filing date: Apr 6, 2011
• Grant date: Jul 22, 2014
• Expiry date: Apr 6, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A composition and a method for coating metallic surfaces with a silane/silanol/siloxane/polysiloxane-containing composition, whereby the composition contains a) at least one compound selected from the silanes, silanols, siloxanes and polysiloxanes, b) at least two compounds selected from titanium-, hafnium-, zirconium-, aluminum- or boron-containing compounds, optionally c) at least one type of cation selected from cations of metals of the 1st to 3rd and 5th to 8th sub-groups including the lanthanides and the 2nd main group of the periodic table of the elements or at least one corresponding compound, d) at least one organic compound selected from monomers, oligomers, polymers, copolymers and block copolymers or e) at least one substance affecting the pH value, water and optionally at least one organic solvent.