To provide a cushion material for seat excellent at ride comfortableness.SOLUTION: A cushion material for seat has urethane foam being a reactive curing substance formed by using isocyanate component of diphenylmethane diisocyanate and including a hard segment and a soft segment. Said urethane foam has a first region whose spin-spin relaxation time (T2) of the hard segment is more than 30 μsec and less than 40 μsec and volume abundance ratio of the hard segment is more than 10% and less than 40% at Hsolid pulse NMR measurement, and which is provided on the seating surface, and a second region whose spin-spin relaxation time (T2) of the hard segment is more than 20 μsec and less than 30 μsec and volume abundance ratio of the hard segment is more than 5% and less than 40% at Hsolid pulse NMR measurement, and which exists next to said first region and is provided on the side away from the seating surface.SELECTED DRAWING: Figure 1

    【課題】乗り心地に優れた座席用クッション材の提供。【解決手段】ジフェニルメタンジイソシアネート系化合物のイソシアネート成分を用いて形成された反応硬化物であり、ハードセグメントおよびソフトセグメントを含む発泡ウレタンを有し、前記発泡ウレタンが、H1固体パルスNMR測定において、ハードセグメントのスピン−スピン緩和時間(T2)が30μsec以上40μsec以下、かつ、ハードセグメントの容積存在比率が10%以上40%以下である第1の領域であって、着座面側に配置されている第1の領域と、H1固体パルスNMR測定において、ハードセグメントのスピン−スピン緩和時間(T2)が20μsec以上30μsec未満、かつ、ハードセグメントの容積存在比率が5%以上40%以下である第2の領域であって、前記第1の領域と隣り合って存在し、着座面から離れた側に配置されている第2の領域と、を有する座席用クッション材。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    CUSHION MATERIAL FOR SEAT AND SEAT


    Additional title:

    座席用クッション材、および座席


    Contributors:

    Publication date :

    2019-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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



    Cushion material, seat cushion material, and seat

    ICHIMURA SHIGEKI / TAKIWAKI KUNIKAZU / ASOBE KUNIO et al. | European Patent Office | 2021

    Free access

    CUSHION MATERIAL, SEAT CUSHION MATERIAL, AND SEAT

    ICHIMURA SHIGEKI / TAKIWAKI KUNIKAZU / ASOBE KUNIO et al. | European Patent Office | 2019

    Free access

    CUSHION MATERIAL FOR SEAT AND SEAT

    ICHIMURA SHIGEKI / ORITO HIROYUKI / OYAMA MASAFUMI et al. | European Patent Office | 2022

    Free access

    Seat cushion skin, seat cushion, and vehicle seat

    TAKAZAWA HARUMICHI / HASUMI HIDEKI / KAGEYAMA ATSUSHI et al. | European Patent Office | 2024

    Free access

    SEAT CUSHION AND VEHICULAR SEAT COMPRISING THE SEAT CUSHION

    TAKAHASHI TOSHIHIKO | European Patent Office | 2021

    Free access