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    • 74. 发明授权
    • Polyurethane foam for seat pad
    • 用于座垫的聚氨酯泡沫
    • US09045580B2
    • 2015-06-02
    • US13641815
    • 2011-04-18
    • Kosuke Yoshitomi
    • Kosuke Yoshitomi
    • C08G18/00C08G18/32B60N2/70B29C44/02C08G18/48C08G18/72C08G59/00C08G101/00
    • C08G18/3203B29C44/02B60N2/7017C08G18/4816C08G18/4833C08G18/4837C08G18/721C08G2101/0083
    • A foam-molded polyurethane foam for a seat pad, particularly for a vehicle, that reduces both shakiness and stress relaxation is provided. The polyurethane foam contains a foaming liquid containing (A) a polyol, (B) a polyisocyanate, (C) water and (D) a catalyst. The polyol (A) contains from 40 to 50% by mass of (a-1) a polyether polyol having a molar ratio of repeating units derived from ethylene oxide and propylene oxide of from 5/95 to 25/75 and a number average molecular weight of from 6,000 to 8,000, and from 5 to 15% by mass of (a-2) a polyether polyol having a molar ratio of repeating units derived from ethylene oxide and propylene oxide of from 0/100 to 20/80 and a number average molecular weight of from 600 to 2,000. The amount of water (C) is 2.0 parts by mass or more per 100 parts by mass of the polyol (A).
    • 提供了一种用于座椅垫,特别是用于车辆的泡沫塑模聚氨酯泡沫,其减少了晃动和应力松弛。 聚氨酯泡沫包含含有(A)多元醇,(B)多异氰酸酯,(C)水和(D)催化剂的发泡液体。 多元醇(A)含有40〜50质量%的(a-1)来自环氧乙烷和环氧丙烷的重复单元的摩尔比为5/95〜25/75的数均分子量 (a-2)来自环氧乙烷和环氧丙烷的重复单元的摩尔比为0/100〜20/80的聚醚多元醇的重量为6〜8,000,5〜15质量% 平均分子量为600至2,000。 相对于100质量份多元醇(A),水(C)的含量为2.0质量份以上。