Blocked polyisocyanates

US7087676B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Jan Mazanek · Cologne, DE
• Reinhard Halpaap · Odenthal, DE
• Markus Mechtel · Neunburg vorm Wald, DE
• Thomas Klimmasch · Leverkusen, DE
• Christoph Thiebes · Cologne, DE

Key dates

• Filing date: Jun 23, 2004
• Grant date: Aug 8, 2006
• Expiry date: Jun 23, 2024

Classification

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

Abstract

Blocked polyisocyanates and one-component stoving systems containing these blocked polyisocyanates, and the preparation thereof and their use for the preparation of lacquers, paints, adhesives and elastomers, wherein blocked polyisocyanates are prepared by reacting polyisocyanates with secondary amines corresponding to the formulawherein wherein R6–R8 can be identical or different and independently of one another denote C1–6-alkyl and/or C3–C6-cycloalkyl, R9 denotes hydrogen or C1–6-alkyl or C3–C6-cycloalkyl.