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公开(公告)号：US06271277B1
公开(公告)日：2001-08-07
申请号：US09211586
申请日：1998-12-14
IPC分类号： C08L7500
CPC分类号： C08J9/0061 , C08G18/10 , C08G18/4837 , C08G18/485 , C08G2101/0008 , C08G2101/0058 , C08G2101/0083 , C08J2375/04 , C08J2400/14 , C08L75/08 , C08G18/48 , C08G18/302 , C08L33/00
摘要： Process for preparing a flexible foam by reacting a prepolymer having an NCO value of 3-15% by weight, which is the reaction product obtained by reacting an excessive amount of a polyisocyanate with a polyether polyol or a mixture of such polyols, said polyol or mixture having an average nominal hydroxyl functionality of from 2 to 6, an average hydroxyl equivalent weight of from 500 to 5000 and an oxyethylene content of at least 50% by weight, with water, the amount of water being 15-500 parts by weight per 100 parts by weight of prepolymer, at the start of the reaction the temperature of the prepolymer being 10-50° C. and the temperature of the water being 10-50° C. higher than the temperature of the prepolymer and a process for preparing a flexible foam by reacting the above prepolymer with water in the presence of a superabsorbent polymer.
摘要翻译： 通过使NCO值为3-15重量％的预聚物（其是通过使过量的多异氰酸酯与聚醚多元醇或这些多元醇的混合物反应而获得的反应产物）反应制备柔性泡沫的方法，所述多元醇或 平均标称羟基官能度为2至6，平均羟基当量为500至5000，氧化乙烯含量为至少50重量％的水与水的混合物，水的量为15-500重量份 100重量份的预聚物，在反应开始时，预聚物的温度为10-50℃，水的温度比预聚物的温度高10-50℃，制备方法 通过在超吸收性聚合物的存在下使上述预聚物与水反应来制备柔性泡沫。
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公开(公告)号：US5730880A
公开(公告)日：1998-03-24
申请号：US673607
申请日：1996-06-25
申请人： Dirk Gerber , Peter Michel Gerber , Viviane Gertrude Johanna Neyens , Peter Frans Eugeen Maria Stroobants
发明人： Dirk Gerber , Peter Michel Gerber , Viviane Gertrude Johanna Neyens , Peter Frans Eugeen Maria Stroobants
CPC分类号： C02F1/681 , Y10S210/924
摘要： Process for removing unwanted material from wanted material containing water by bringing an isocyanate-containing prepolymer into contact with the materials, allowing the prepolymer to react with the water to form a flexible foam and removing the foam obtained from the wanted material.
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