Process for making flexible polyurethane foams
    5.
    发明授权
    Process for making flexible polyurethane foams 失效
    制造柔性聚氨酯泡沫的方法

    公开(公告)号:US06187832B1

    公开(公告)日:2001-02-13

    申请号:US09468805

    申请日:1999-12-21

    IPC分类号: C08G1810

    摘要: Process for preparing a flexible polyurethane foam by reacting a polyisocyanate and two different polyols under foam forming conditions so as to prepare a rigid foam, by crushing the rigid foam so obtained and by subjecting the flexible foam so obtained to a heat treatment. Flexible foams are obtained which do not show a major glass transition temperature between −100° C. and +25° C.

    摘要翻译: 通过在泡沫形成条件下使多异氰酸酯和两种不同的多元醇反应制备软质聚氨酯泡沫的方法,通过粉碎如此获得的刚性泡沫和通过使如此获得的柔性泡沫经受热处理来制备刚性泡沫。 获得柔性泡沫,其不显示在-100℃和+ 25℃之间的主要玻璃化转变温度。

    Flexible polyurethane foams
    7.
    发明授权
    Flexible polyurethane foams 失效
    柔性聚氨酯泡沫

    公开(公告)号:US06288134B1

    公开(公告)日:2001-09-11

    申请号:US09468353

    申请日:1999-12-21

    IPC分类号: C08G1804

    摘要: Process for preparing a flexible polyurethane foam by reacting a polyisocyanate and two different polyols under foam forming conditions so as to prepare a rigid foam and by crushing the rigid foam so obtained in a direction perpendicular to the direction of rise of the foam. Flexible foams are obtained which do not show a major glass transition temperature between −100° C. and +25° C. and which have an anisotropy of 1.80 to 4.00.

    摘要翻译: 通过在泡沫形成条件下使多异氰酸酯和两种不同的多元醇反应制备柔性聚氨酯泡沫的方法,以制备刚性泡沫,并通过在垂直于泡沫的上升方向的方向上破碎如此获得的刚性泡沫。 获得的柔性泡沫体在-100℃和+ 25℃之间没有显示出主要的玻璃化转变温度,其各向异性为1.80至4.00。

    Flexible polyurethane foams
    10.
    发明授权
    Flexible polyurethane foams 失效
    柔性聚氨酯泡沫

    公开(公告)号:US6020391A

    公开(公告)日:2000-02-01

    申请号:US963834

    申请日:1997-11-04

    摘要: Process for preparing a flexible polyurethane foam by reacting a polyisocyanate and two different polyols under foam forming conditions so as to prepare a rigid foam and by crushing the rigid foam so obtained in a direction perpendicular to the direction of rise of the foam. Flexible foams are obtained which do not show a major glass transition temperature between -100.degree. C. and +25.degree. C. and which have an anisotropy of 1.80 to 4.00.

    摘要翻译: 通过在泡沫形成条件下使多异氰酸酯和两种不同的多元醇反应制备柔性聚氨酯泡沫的方法,以制备刚性泡沫,并通过在垂直于泡沫的上升方向的方向上破碎如此获得的刚性泡沫。 获得的柔性泡沫体在-100℃至+25℃之间不显示主要的玻璃化转变温度,其各向异性为1.80至4.00。