Binding agent mixture, coating agents containing said binding agent mixture, and coatings produced from said coating agents, said coatings having a high scratch resistance, high weathering stability, and good optical properties

US9266995B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Günter Klein
• Andreas Poppe · Clüversborstel, DE
• Sabine Holtschulte · Ascheberg, DE
• Björn Feldmann · Hachenburg, DE
• Ulrike WENKING · Steinfurt, DE
• Karl-Heinz Joost · Drensteinfurt, DE

Key dates

• Filing date: Aug 3, 2010
• Grant date: Feb 23, 2016
• Expiry date: Dec 4, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Binder mixture comprising a hydroxyl-containing compound (A), and at least 1.0% by weight, based on the nonvolatile constituents of the binder mixture, of a phosphorus- and nitrogen-containing catalyst (D) for the crosslinking of silane groups, wherein the hydroxyl-containing compound (A) comprises a hydroxyl-functional polyester having on average at least one hydroxyl function of the polyester esterified with a C8 to C9 monocarboxylic acid, and the catalyst (D) is blocked with at least one tertiary amine of the formula (I)where R1 is an acyclic aliphatic or araliphatic hydrocarbon radical having at least 3 C atoms, R2 is an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from R1 and/or R3, and R3 is hydrogen or an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from R1 and/or R2.