Polyurethane foams with fine cell size
    1.
    发明授权
    Polyurethane foams with fine cell size 有权
    具有细胞尺寸的聚氨酯泡沫

    公开(公告)号:US06716890B1

    公开(公告)日:2004-04-06

    申请号:US10354925

    申请日:2003-01-30

    IPC分类号: C08G1828

    摘要: Polyurethane foams formed using a specific mixture of polyether and graft polyols with toluene diisocyanate have fine cell size (over 70 pores per inch) and higher durability with IFD25 retention over 70% after 12,000 cycles of roll-shear. The foam-forming ingredients are mixed together and foamed at controlled pressures in the range 1.0 to 1.5 (absolute), preferably 1.05 to 1.5 bar (absolute). The foams make particularly good carpet cushions.

    摘要翻译: 使用聚醚和接枝多元醇与甲苯二异氰酸酯的特定混合物形成的聚氨酯泡沫体具有细胞尺寸(每英寸超过70个孔)和更高的耐久性,IFD25在经过12,000次辊剪切循环后保持70%以上。 将发泡成分混合在一起,并在1.0至1.5巴(绝对)范围内,优选1.05至1.5巴(绝对)范围内的受控压力下发泡。 泡沫使地毯垫特别好。