Polyurethane coating material compositions and use thereof for producing multicoat paint systems

US10781338B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Jens WEGNER · Havixbeck, DE
• Joerg Mueller · Bonn, DE
• Berthold Austrup · Selm, DE

Key dates

• Filing date: Jun 1, 2016
• Grant date: Sep 22, 2020
• Expiry date: Nov 10, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/8096
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein is a coating material compositions containing (A) a polyhydroxyl group-containing component, (B) a component (B) having on average at least one isocyanate group and having on average at least one of: at least one hydrolyzable silane group of the formula (I): —NR—(X—SiR″x(OR′)3-x), and at least one hydrolyzable silane group of the formula (II): —N(X—SiR″x(OR′)3-x)n(X′—SiR″y(OR′)3-y)m, (D) a phosphorus and nitrogencontaining catalyst, and a catalyst (Z), wherein: the catalyst (Z) is selected from zinc and bismuth carboxylates, of aluminum, zirconium, titanium and/or boron chelates and/or of inorganic, tin-containing catalysts, and mixtures thereof; and the coating material composition comprises at least one reaction accelerator (R) which is selected from the group of inorganic acids and/or of organic acids and/or of partial esters of the inorganic acids and/or of partial esters of the organic acids. Processes for producing multicoat paint systems, and coatings obtained from the coating material compositions are also disclosed.