Poly(THF)-based polyurethane dispersions

US10233279B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Sebastian Dörr · Mülheim an der Ruhr, DE
• Hans Georg Grablowitz · Cologne, DE
• Thomas Feller · Solingen, DE
• Thomas Michaelis · Leverkusen, DE

Key dates

• Filing date: Jun 1, 2010
• Grant date: Mar 19, 2019
• Expiry date: Jun 17, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2933
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to novel aqueous polyurethane dispersions produced using at least two poly(tetramethylene glycol) polyether polyols with different average molar masses and at least two different polyisocyanate components.