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1.发明授权Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups, process for their preparation and their use for the preparation of flexible polyurethane foams 失效含有氨基甲酸酯基团的二苯基甲烷二异氰酸酯基液体多异氰酸酯混合物，其制备方法及其用于制备柔性聚氨酯泡沫体
公开(公告)号：US4478960A
公开(公告)日：1984-10-23
申请号：US544257
申请日：1983-10-21
CPC分类号： C08G18/7664 , C08G18/10 , C08G18/4837 , C08G18/4841 , C08G2101/0008 , C08G2101/005 , C08G2101/0058
摘要： Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups and having an isocyanate content of from 12 to 30 percent by weight are obtained by reaction of a polyoxypropylene polyoxyethylene polyol containing 5 to 30 percent by weight of oxyethylene with diphenylmethane diisocyanate-based isocyanates. These polyisocyanate mixtures are storage stable at low temperature and yield flexible polyurethane foams having improved mechanical properties.
摘要翻译： 通过将含有5-30重量％的氧化乙烯的聚氧丙烯聚氧乙烯多元醇与二苯基甲烷二异氰酸酯系异氰酸酯反应，得到含有氨基甲酸酯基，异氰酸酯含量为12〜30重量％的二苯基甲烷二异氰酸酯系液态多异氰酸酯混合物。 这些多异氰酸酯混合物在低温下储存稳定，并产生具有改善的机械性能的柔性聚氨酯泡沫。
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2.发明授权Preparation of storage-stable, moisture-cured, single-component polyurethane systems and their uses 失效储存稳定，湿固化的单组分聚氨酯体系及其用途的制备
公开(公告)号：US4853454A
公开(公告)日：1989-08-01
申请号：US76865
申请日：1987-07-23
摘要： A storage-stable, moisture-cured, single-component polyurethane system comprising(a) a polyurethane prepolymer having an NCO content of from about 1 to 10 weight percent prepared by the reaction of higher molecular polyols and aromatic polyisocyanates,(b) at least one polyaldimine having the structural formula ##STR1## in which R is a multivalent linear or branched or cyclic hydrocarbon radical, which optionally is interrupted by alkylene-, sulfonyl-, thio- and/or oxy groups as bridge members, or is a multivalent polyoxyalkylene radical,(c) optionally an aromatic and/or aliphatic carboxylic acid or arylsulfonic acid, and(d) optionally auxiliaries and/or additives.The polyurethane systems are useful as sealing, casting, patching, cementing and coating compounds.
摘要翻译： 一种储存稳定的，湿固化的单组分聚氨酯体系，其包含（a）通过高分子多元醇和芳族多异氰酸酯的反应制备的NCO含量为约1-10重量％的聚氨酯预聚物，（b）至少 一种具有结构式为其中R为多价直链或支链或环状烃基的结构式的聚醛亚胺，其任选被亚烷基，磺酰基，硫代和/或氧基作为桥连构件中断，或者是 多价聚氧化烯基，（c）任选的芳族和/或脂族羧酸或芳基磺酸，和（d）任选的助剂和/或添加剂。 聚氨酯系统可用作密封，铸造，修补，固井和涂料化合物。
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公开(公告)号：US4973655A
公开(公告)日：1990-11-27
申请号：US365125
申请日：1989-06-12
CPC分类号： C08G63/78
摘要： A process for the continuous production of linear thermoplastic polyesters comprises the following steps:(a) passing a transesterification or esterification product of an aliphatic or aromatic dicarboxylic acid having a molecular weight of
摘要翻译： 用于连续生产线型热塑性聚酯的方法包括以下步骤：（a）将分子量<300的脂族或芳族二羧酸或其成酯衍生物的酯交换或酯化产物与脂族或脂环族 分子量<250的二醇，其可另外含有分子量为400〜4000的聚（环氧烷）二醇，在250〜360℃下，在0.5〜20mmHg的压力下，在 通过具有自由表面积为0.3至1.5m 2 / l的内部配件的基本上直立的管状预缩合区，停留时间为3至10分钟以形成预缩合物和分子量<250的蒸气二醇，（b） 分离成预缩合和蒸发的二醇，和（c）在240〜290℃下，在0.5〜20mmH的压力下进一步冷凝底部的预缩合物 g在停留时间为10至40分钟，并充满浓缩的颗粒聚酯。
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4.发明授权Moisture tempered, storage stable single component polyurethane systems and their application 失效水分回火，储存稳定的单组分聚氨酯体系及其应用
公开(公告)号：US4720535A
公开(公告)日：1988-01-19
申请号：US20951
申请日：1987-03-02
申请人： Gisbert Schleier , Friedrich Gerold
发明人： Gisbert Schleier , Friedrich Gerold
摘要： This invention relates to moisture tempered, storage stable, single component polyurethane systems prepared from a polyurethane prepolymer derived from an aromatic polyisocyanate, and a polyaldimine, which are used for preparing polyurethane elastomers or polyurethane coatings having improved temperature resistance.
摘要翻译： 本发明涉及由衍生自芳族多异氰酸酯的聚氨酯预聚物制备的水分回收，储存稳定的单组分聚氨酯体系，以及用于制备具有改善耐温性的聚氨酯弹性体或聚氨酯涂料的聚醛亚胺。
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