Viscoelastic element based on a polyurethane foam

US10941238B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Marc-Stephan Weiser · Leverkusen, DE
• Sascha Plug · Leverkusen, DE
• Sebastian Doerr · Mülheim an der Ruhr, DE
• Jeff Motley · Biggleswade, GB

Key dates

• Filing date: Oct 2, 2018
• Grant date: Mar 9, 2021
• Expiry date: Oct 2, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a viscoelastic element comprising a polyurethane foam, wherein the polyurethane foam can be obtained by reacting at least one isocyanate-functional prepolymer (VI) in the presence of a special polyurethane urea dispersion (V2), wherein the reaction of the prepolymer (VI) takes place in the presence of the polyurethane urea (V2) with a medium containing isocyanate-reactive groups. The invention also relates to a method for producing the viscoelastic element and to the use thereof.