2K polyurethane systems with a high glass-transition temperature

US10093766B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Andreas Ferencz · Goldkronach, DE
• Lothar Thiele · Langenfeld, DE
• Tamara Schmidt · Oberhausen, DE
• Konrad Becker · Goldkronach, DE
• Wolfgang Lupp · Duisburg, DE
• Dustin Ullmann · Stuttgart, DE
• Oliver-Kei Okamoto · Goldkronach, DE

Key dates

• Filing date: Aug 25, 2014
• Grant date: Oct 9, 2018
• Expiry date: Oct 28, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A two-component polyurethane composition with a viscosity of 20 to 3000 mPa·s (EN ISO 2555, 25° C.), containing i) 10 to 80 wt. % of at least one polyol with a number-average molecular weight of 200 g/mol to 3000 g/mol, ii) 5 to 70 wt. % of at least one polyisocyanate, iii) 0 to 10 wt. % of a catalyst, wherein the composition has an NCO:OH ratio of 2:1 to 1:2 and polyisocyanates are used, wherein 3 to 25 mol % of the NCO groups of the polyisocyanate are converted into carbodiimide and/or uretonimine. The two-component polyurethane compositions are used as matrix binders for fiber composite moldings.