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    • 94. 发明授权
    • Water-blown rigid foams for the insulation of liquefied natural gas tanks
    • 用于液化天然气储罐绝缘的水喷硬质泡沫
    • US08530533B2
    • 2013-09-10
    • US12522479
    • 2008-01-02
    • Pit LehmannKatrin ThaneCheul Hyeon Hwang
    • Pit LehmannKatrin ThaneCheul Hyeon Hwang
    • C08G18/28
    • C08G18/4812C08G18/161C08G18/1808C08G18/1816C08G18/2027C08G18/2081C08G18/4825C08G18/4883C08G2101/0025C08G2101/0083Y10T428/31551
    • The present invention relates to a rigid polyurethane foam comprising reinforcing materials which can be obtained by mixing (a) isocyanates which have a viscosity at 25° C. of less than 500 mPas with (b) compounds having groups which are reactive toward isocyanates, (c) blowing agents comprising water, (d) catalysts and, if appropriate, (e) further additives to form a reaction mixture and applying the reaction mixture to a reinforcing material, wherein the compounds (b) having groups which are reactive toward isocyanates comprise a polyetherol (b1) having a functionality of 4 or more and a viscosity at 25° C. of 10 000 mPas or less and a polyetherol (b2) having a functionality of 3 or less and a viscosity at 25° C. of 500 mPas or less. The present invention further relates to a process for producing such rigid polyurethane foams and the use of the rigid polyurethane foams for the insulation of liquefied natural gas tanks.
    • 本发明涉及一种硬质聚氨酯泡沫,其包括增强材料,其可以通过将(a)在25℃下具有小于500mPas的粘度的异氰酸酯与(b)具有对异氰酸酯反应的基团的化合物混合( c)包含水的发泡剂,(d)催化剂,如果合适的话,(e)其它添加剂以形成反应混合物并将反应混合物施加到增强材料上,其中具有对异氰酸酯具有反应性的基团的化合物(b)包括 官能度为4以上,25℃下的粘度为10000mPa·s以下的聚醚类(b1)和官能度为3以下,25℃下的粘度为500mPa·s的聚醚类(b2) 或更少。 本发明还涉及一种用于生产这种硬质聚氨酯泡沫体的方法,以及使用硬质聚氨酯泡沫塑料用于液化天然气罐的绝缘。