Polyadducts containing uretidone groups

US6987158B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Josef Laas · Odenthal, DE
• Reinhard Halpaap · Odenthal, DE
• Peter Thometzek · Bensberg, DE
• Michael Grahl · Leverkusen, DE
• Hans-Ulrich Meier-Westhues · Leverkusen, DE

Key dates

• Filing date: Jul 3, 2003
• Grant date: Jan 17, 2006
• Expiry date: Nov 9, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2150/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyaddition compounds containing uretdione groups prepared by reacting uretdione polyisocyanates formed from diisocyanates having exclusively secondary- and/or tertiary-attached isocyanate groups with a molar fraction of isocyanurate structures, based on the sum of uretdione groups and isocyanurate groups, of not more than 10%, with compounds reactive towards isocyanates. The polyaddition compounds can be use as a starting component in the preparation of polyurethane plastics, in particular as crosslinkers for heat-crosslinkable powder coating materials. The compounds may be used as starting components in the preparation of moldings and shaped parts, and as starting components in the preparation of coating materials and coatings.