Provided is a polyurethane foam having a reduced stress relaxation rate and a reduced hysteresis loss rate while having moderate rebound elasticity.The polyurethane foam is obtained from a composition containing a polyol and an isocyanate. As the polyol, a polyol (a) having a content of an ethylene oxide unit of 60 mol% or more is contained when a total amount of alkylene oxide units is 100 mol%, and a content of the polyol (a) is 60 parts by mass or more and 95 parts by mass or less when a total amount of the polyol is 100 parts by mass.
POLYURETHANE FOAM AND SEAT PAD
POLYURETHANSCHAUM UND SITZPOLSTER
MOUSSE DE POLYURÉTHANE ET COUSSIN DE SIÈGE
18.12.2024
Patent
Elektronische Ressource
Englisch
IPC: | A47C Stühle , CHAIRS / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind |
Europäisches Patentamt | 2020
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