Coating compositions comprising monoallophanates based on alkoxysilane alkyl isocyanates

US10538684B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Emmanouil Spyrou · Schermbeck, DE
• Tobias Unkelhaeusser · Herten, DE
• Sabine Naumann · Herne, DE
• Manfred Kreczinski · Herne, DE
• Holger Loesch · Herne, DE
• Alina Meier · Marl, DE
• Uwe Korek · Schneverdingen, DE

Key dates

• Filing date: Oct 7, 2016
• Grant date: Jan 21, 2020
• Expiry date: Nov 19, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D175/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A coating composition that includes an allophanate-containing compound can offer improved scratch resistance. The coating composition includes A) at least one allophanate-containing compound having the formula (1): wherein R, R1-R6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2, B) a binder, C) optionally, an aliphatic or cycloaliphatic polyisocyanate having an NCO functionality of at least 2, D) optionally, a catalyst, E) optionally, an auxiliary and/or additive, and, F) optionally, a solvent.