Coating material and its use for producing highly scratch resistant multilayer transparent lacquers

US6835420B1 · kind B1 · utility

Assignee

• BASF Coatings AC · DE

Inventors

• Ulrike Rockrath · Senden, DE
• Hubert Baumgart · Hachenburg, DE
• Andrea Zumbrink · Reken, DE
• Stefan Silber · Krefeld, DE
• Thomas Farwick · Billerbeck, DE

Key dates

• Filing date: Feb 14, 2002
• Grant date: Dec 28, 2004
• Expiry date: Nov 15, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F290/148
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a coating material which can be hardened thermally and, optionally, by using actinic radiation. Said coating material contains: A) a binding agent comprising at least two functional groups (a1) which can enter into thermal cross-linking reactions with complementary functional groups (b1) in cross-linking agent (B), and; (B) at least one cross-linking agent comprising at least two functional groups (b1) which can enter into thermal cross-linking reactions with complementary functional groups (a1) in binding agent (A). At least one binding agent (A) contains, in an integrally polymerized manner, at least one olefinically unsaturated polysiloxane macromonomer which contains, in the statistical mean, at least 3.0 double bonds per molecule. The invention also relates to the use of the coating material for producing highly scratch resistant multilayer transparent lacquers.