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    Preparation of chlorofluorocarbon-free flexible polyurethane foams using diphenylmethane diisocyanate-based polyisocyanate mixtures containing urethane groups, and modified polyisocyanate mixtures
    6.
    发明授权
    Preparation of chlorofluorocarbon-free flexible polyurethane foams using diphenylmethane diisocyanate-based polyisocyanate mixtures containing urethane groups, and modified polyisocyanate mixtures 失效
    使用含有氨基甲酸酯基团的二苯基甲烷二异氰酸酯基聚异氰酸酯混合物和改性多异氰酸酯混合物制备不含氯氟烃的柔性聚氨酯泡沫体

    公开(公告)号：US5597885A

    公开(公告)日：1997-01-28

    申请号：US430926

    申请日：1995-06-07

    申请人： Heinz-Dieter Lutter ,  Bernd Bruchmann ,  Claudia Spang ,  Roland Minges ,  Dietrich Scherzer ,  Michael Lugmayr ,  Ruth Zschiesche

    发明人： Heinz-Dieter Lutter ,  Bernd Bruchmann ,  Claudia Spang ,  Roland Minges ,  Dietrich Scherzer ,  Michael Lugmayr ,  Ruth Zschiesche

    IPC分类号： C08G18/12 ,  C08G18/48 ,  C08G18/10

    CPC分类号： C08G18/4812 ,  C08G18/12 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0058 ,  C08G2101/0083

    摘要： The invention relates to a process for the preparation of CFC-free, flexible polyurethane foams or molded foams by reactingA) liquid polyisocyanate mixtures containing bonded urethane groups and having a content of NCO groups of from 20 to 30% by weight, these mixtures themselves being prepared by reacting a mixture of diphenylmethane diisocyanates and polyphenyl-polymethylene polyisocyanates (crude diphenylmethane diisocyanate) with a polyether-polyol mixture, having a hydroxyl number of from 120 to 25, of at least one polyoxypropylene glycol and at least one trifunctional polyoxypropylene-polyoxyethylene glycol having a content of ethylene oxide units of from 90 to 10% by weight or by reacting 4,4'-diphenylmethane diisocyanate (diphenylmethyl diisocyanate) or an diphenylmethane diisocyanate isomer mixture with said polyether-polyol mixture to give an NCO-containing quasi-prepolymer and diluting this quasi-prepolymer with crude diphenylmethane diisocyanate, withB) relatively high-molecular-weight polyhydroxyl compounds.

    摘要翻译： 本发明涉及一种制备无CFC的柔性聚氨酯泡沫或模制泡沫的方法，其通过使A）含有键合的氨基甲酸酯基团的液体多异氰酸酯混合物并且具有20至30重量％的NCO基团的含量，这些混合物本身 通过使二苯基甲烷二异氰酸酯和聚苯基 - 多亚甲基多异氰酸酯（粗二苯基甲烷二异氰酸酯）与羟基数为120至25的聚醚 - 多元醇混合物的混合物与至少一种聚氧丙烯二醇和至少一种三官能聚氧丙烯 - 聚氧乙烯 乙二醇的含量为90〜10重量％的环氧乙烷单元，或通过使4,4'-二苯基甲烷二异氰酸酯（二苯基甲基二异氰酸酯）或二苯基甲烷二异氰酸酯异构体混合物与所述聚醚 - 多元醇混合物反应，得到含NCO的准 - 预聚物，并用粗二苯基甲烷二异氰酸酯稀释该准预聚物，B）相对较高 小重量多羟基化合物。

    Preparation of chlorofluorocarbon-free flexible polyurethane foams using diphenylmethane diisocyanate-based polyisocyanate mixtures containing urethane groups, and modified polyisocyanate mixtures of this type
    7.
    发明授权
    Preparation of chlorofluorocarbon-free flexible polyurethane foams using diphenylmethane diisocyanate-based polyisocyanate mixtures containing urethane groups, and modified polyisocyanate mixtures of this type 失效
    使用含有氨基甲酸酯基团的二苯基甲烷二异氰酸酯基聚异氰酸酯混合物和该类型的改性多异氰酸酯混合物制备不含氟氯化碳的柔性聚氨酯泡沫体

    公开(公告)号：US5596063A

    公开(公告)日：1997-01-21

    申请号：US430924

    申请日：1995-06-08

    申请人： Heinz-Dieter Lutter ,  Bernd Bruchmann ,  Claudia Spang ,  Roland Minges ,  Dietrich Scherzer ,  Michael Lugmayr ,  Ruth Zschiesche

    发明人： Heinz-Dieter Lutter ,  Bernd Bruchmann ,  Claudia Spang ,  Roland Minges ,  Dietrich Scherzer ,  Michael Lugmayr ,  Ruth Zschiesche

    IPC分类号： C08G18/12 ,  C08G18/48 ,  C08G18/10

    CPC分类号： C08G18/4812 ,  C08G18/12 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0058 ,  C08G2101/0083

    摘要： The invention relates to a process for the preparation of CFC-free, flexible polyurethane foams or molded foams by reactingA) liquid polyisocyanate mixtures containing bonded urethane groups and having a content of NCO groups of from 20 to 30% by weight, these mixtures themselves being prepared by reacting a mixture of diphenylmethane diisocyanates and polyphenyl-polymethylene polyisocyanates (crude diphenylmethane diisocyanate) with a polyether-polyol mixture, having a hydroxyl number of from 120 to 25, of at least one polyoxypropylene glycol and at least one trifunctional polyoxypropylene-polyoxyethylene glycol having a content of ethylene oxide units of from 90 to 10% by weight or by reacting 4,4'-diphenylmethane diisocyanate (diphenylmethyl diisocyanate) or an diphenylmethane diisocyanate isomer mixture with said polyether-polyol mixture to give an NCO-containing quasi-prepolymer and diluting this quasi-prepolymer with crude diphenylmethane diisocyanate, withB) relatively high-molecular-weight polyhydroxyl compounds.

    摘要翻译： 本发明涉及一种制备无CFC的柔性聚氨酯泡沫或模制泡沫的方法，其通过使A）含有键合的氨基甲酸酯基团的液体多异氰酸酯混合物并且具有20至30重量％的NCO基团的含量，这些混合物本身 通过使二苯基甲烷二异氰酸酯和聚苯基 - 多亚甲基多异氰酸酯（粗二苯基甲烷二异氰酸酯）与羟基数为120至25的聚醚 - 多元醇混合物的混合物与至少一种聚氧丙烯二醇和至少一种三官能聚氧丙烯 - 聚氧乙烯 乙二醇的含量为90〜10重量％的环氧乙烷单元，或通过使4,4'-二苯基甲烷二异氰酸酯（二苯基甲基二异氰酸酯）或二苯基甲烷二异氰酸酯异构体混合物与所述聚醚 - 多元醇混合物反应，得到含NCO的准 - 预聚物，并用粗二苯基甲烷二异氰酸酯稀释该准预聚物，B）相对较高 小重量多羟基化合物。