Polyurethanelastomer und Polyurethanformkörper

Details

Veröffentlichungs-Nr.

EP4772555

Anmeldetag

27. August 2024

Veröffentlichung

6. März 2025

Rechtsraum

EP

Abstract

Provided is a polyurethane elastomer which has a matrix and a plurality of domains dispersed in the matrix, the polyurethane elastomer being characterized in that, in a specific molded body thereof, the number of included domains is 10 to 77,000, the arithmetic mean value of the sphere equivalent diameters of the domains is 1.0 µm to 30.0 µm, the ratio of the total volume of the domains is 15 vol% to 45 vol%, the relationship between a parameter A indicating the viscoelastic term of the domains and a parameter B indicating the viscoelastic term of the matrix is A < B, the microrubber hardness and the strain at 5 seconds after unloading are each within a specific range, and if C (mass %) and D (mass %) are respective ratios of the mass of an extract E1 and the mass of an extract E2, D/C is 1.0 to 5.0.

Anmelder

Firma

Canon Kabushiki Kaisha

Land

🇯🇵 Japan