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16 条记录 (耗时 0.021 秒)

    Production of polyurethane foam of reduced tendency to form embers when burned
    4.
    发明授权
    Production of polyurethane foam of reduced tendency to form embers when burned 失效
    生产聚氨酯泡沫时，燃烧时会减少形成余烬的倾向

    公开(公告)号：US4251635A

    公开(公告)日：1981-02-17

    申请号：US76877

    申请日：1979-09-19

    申请人： Herman Stone

    发明人： Herman Stone

    IPC分类号： C08G18/00 ,  C08J9/00 ,  C08G18/14 ,  C08G18/30

    CPC分类号： C08J9/0023 ,  C08J2375/04

    摘要： Flexible polyurethane foam having reduced tendency to form burning embers when it is ignited and burned is provided by incorporating into the reaction mixture before foaming a ketone or benzaldehyde.In a preferred embodiment, flexible polyurethane foam of increased flame retardance is provided by also incorporating a flame retardant into the reaction mixture before foaming.

    摘要翻译： 通过在发泡酮或苯甲醛之前加入到反应混合物中来提供在点燃和燃烧时具有降低形成燃烧余烬的倾向的柔性聚氨酯泡沫。 在优选的实施方案中，通过在发泡之前还将阻燃剂掺入反应混合物中来提供增加阻燃性的柔性聚氨酯泡沫。

    Density reduction in flexible polyurethane foams
    6.
    发明授权
    Density reduction in flexible polyurethane foams 失效
    柔性聚氨酯泡沫塑料的密度降低

    公开(公告)号：US5006569A

    公开(公告)日：1991-04-09

    申请号：US394548

    申请日：1989-08-16

    申请人： Herman Stone

    发明人： Herman Stone

    IPC分类号： C08G18/32 ,  C08G18/50 ,  C08G18/66 ,  C08J9/08

    CPC分类号： C08J9/08 ,  C08G18/3265 ,  C08G18/3296 ,  C08G18/503 ,  C08G18/6681 ,  C08G2101/0008 ,  C08G2101/005 ,  C08J2375/04

    摘要： Improved, flexible, open-celled polyurethane foams of reduced density, but with stability and firmness characteristics comparable to those of standard foams, are described. The foams are formed in situ from the reaction, in the presence of a catalyst, of an isocyanate, one or more blowing agents including water, a foam stabilizer, a polyether polyol, and a liquid salt produced from the reaction of CO.sub.2 with a water-soluble amine or amino alcohol. Preferred amines or amino alcohols for the CO.sub.2 salt include primary amines and polyols which contain primary amino end groups, secondary amines which contain primary hydroxyl groups, and a variety of low molecular weight aminohydroxy compounds. The liquid salt is present in the foam formulations in an amount of at least 2 parts by weight per 100 parts by weight of polyol.

    Method for reducing volatile emissions generated during the preparation of foams and fabrication of foam products
    7.
    发明授权
    Method for reducing volatile emissions generated during the preparation of foams and fabrication of foam products 失效
    减少在制备泡沫和制造泡沫产品期间产生的挥发性排放的方法

    公开(公告)号：US5447963A

    公开(公告)日：1995-09-05

    申请号：US291658

    申请日：1994-08-17

    申请人： Michael Pcolinsky ,  Steven Lichvar ,  Herman Stone

    发明人： Michael Pcolinsky ,  Steven Lichvar ,  Herman Stone

    IPC分类号： C08J9/02 ,  B01D53/14 ,  C08J9/36

    CPC分类号： B01D53/1487 ,  Y10S521/918

    摘要： Methods for reducing the quantity of emissions emanating from a foam-forming composition during the preparation of a fully-cured foam comprising contacting emissions emanating from the foam-forming composition during preparation of the fully-cured foam with vegetable oil. A further aspect provides a method for reducing the quantity of emissions emanating from a fully-formed foam during hot processing of the foam comprising contacting emissions emanating from the foam during such hot processing with vegetable oil.

    摘要翻译： 在制备完全固化的泡沫体的过程中减少泡沫形成组合物产生的排放量的方法，包括在用植物油制备完全固化的泡沫体期间接触由泡沫形成组合物发出的排放物。 另一方面提供了一种用于在泡沫的热处理期间减少从完全形成的泡沫发出的排放量的方法，其包括在这种热加工过程中与植物油接触从泡沫发出的排放物。

    Process for rapid cooling of polyurethane foam
    9.
    发明授权
    Process for rapid cooling of polyurethane foam 失效
    聚氨酯泡沫快速冷却方法

    公开(公告)号：US5128379A

    公开(公告)日：1992-07-07

    申请号：US674438

    申请日：1991-03-22

    申请人： Herman Stone

    发明人： Herman Stone

    IPC分类号： B29C35/16 ,  B29C44/20 ,  B29C44/34 ,  C08J9/22

    CPC分类号： B29C35/16 ,  B29C44/20 ,  B29C44/3419 ,  B29C44/56 ,  B29C2035/1658 ,  B29C2035/1691 ,  Y10S521/918

    摘要： An improved process for rapidly cooling hot freshly polymerized foam is provided by passage of a fluid coolant stream having a water vapor content which initially is in the range from slightly below to above the dew point. In preferred embodiments the cooling fluid stream is recirculated, and auxiliary blowing agents and gaseous reaction products are removed and recovered.

    摘要翻译： 通过具有最初在稍低于露点以上范围内的水蒸汽含量的流体冷却剂流而提供用于快速冷却热新鲜聚合泡沫的改进方法。 在优选的实施方案中，冷却流体流被再循环，并且除去和回收辅助发泡剂和气态反应产物。