Low-damping polyurethane elastomer

US11267926B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Johannes Poppenberg · Wyandotte, US
• Waldemar MEIER · Bohmte, DE
• Christina Tepper · Bohmte, DE
• Markus Susoff · Kassel, DE
• Dejan Petrovic · Ludwigshafen, DE
• Steffen Richter · Bohmte, DE

Key dates

• Filing date: Nov 14, 2017
• Grant date: Mar 8, 2022
• Expiry date: Oct 18, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a method of preparing a polyurethane elastomer, said method comprising the step of reacting at least one isocyanate composition (ZI) and one polyol composition (ZP) comprising a poly-ε-caprolactone polyol and an α-hydro-ω-hydroxy-poly(oxytetramethylene) polyol to obtain an isocyanate-functional prepolymer and the step of reacting the prepolymer obtained as per step (i) with at least one chain extender (KV). The present invention further relates to a polyurethane elastomer obtained or obtainable according to a method of the invention and also to the method of using a polyurethane elastomer according to the invention or a polyurethane elastomer obtained or obtainable according to a method of the invention in the manufacture of a shaped article, especially a damping element, a shock absorber or a stop buffer or part of a shoe or of a shoe sole, for example part of an insert sole or of a midsole.