Process for making flexible foams
    1.
    发明授权
    Process for making flexible foams 失效
    制造柔性泡沫的工艺

    公开(公告)号:US5849850A

    公开(公告)日:1998-12-15

    申请号:US696411

    申请日:1996-08-13

    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.degree.-50.degree. C. and the temperature of the water being 10.degree.-50.degree. 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℃, 用于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。

    Process for making flexible foams
    2.
    发明授权
    Process for making flexible foams 失效
    制造柔性泡沫的工艺

    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

    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。

    Process for making flexible foams
    7.
    发明授权
    Process for making flexible foams 失效
    制造柔性泡沫的工艺

    公开(公告)号:US5591779A

    公开(公告)日:1997-01-07

    申请号:US560858

    申请日:1995-11-20

    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.degree.-50.degree. C. and the temperature of the water being 10.degree.-50.degree. 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℃, 用于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。