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    • 3. 发明公开
    • THERMOPLASTISCHE POLYURETHANE
    • 热塑性聚氨酯
    • EP2013257A1
    • 2009-01-14
    • EP07727977.6
    • 2007-04-11
    • BASF SE
    • HENZE, Oliver SteffenKRECH, RüdigerPRISSOK, FrankSCHEFFER, KarinSCHÄFER, FrankNIERMANN, Heinrich
    • C08G18/66
    • A43B1/14A43B5/04C08G18/4854C08G18/6674C08G2120/00
    • A process for preparing thermoplastic polyurethane by reacting (a) isocyanates with (b) compounds which are reactive toward isocyanates and have a molecular weight (Mw) between 500 and 10 000 g/mol and (c) chain extenders having a molecular weight between 50 and 499 g/mol, optionally in the presence of (d) catalysts and/or (e) customary additives, characterized in that a chain extender mixture consisting of a main chain extender (c1) and one or more co-chain extenders (c2) is used and the thermoplastic polyurethane prepared has a hard phase content of greater than 0.40, the hard phase content being defined by the following formula (I) with the following definitions: MKVx: molar mass of the chain extender x in g/mol, mKVx: mass of the chain extender x in g, MIso: molar mass of the isocyanate used in g/mol, mtot: total mass of all starting materials in g, k: number of chain extenders.
    • (a)异氰酸酯与(b)对异氰酸酯具有反应活性并且分子量(Mw)为500至10000g / mol的化合物和(c)分子量为50至50的扩链剂反应制备热塑性聚氨酯的方法 (d)催化剂和/或(e)常规添加剂存在下,其特征在于由主扩链剂(c1)和一种或多种共扩链剂(c2)组成的扩链剂混合物 )并且所制备的热塑性聚氨酯具有大于0.40的硬质相含量,硬质相含量由以下式(I)定义并具有以下定义:MKVx:扩链剂的摩尔质量x(g / mol) mKVx:扩链剂的质量,单位g,MIso:所用异氰酸酯的摩尔质量,单位g / mol,mtot:所有原料的总质量,单位g,k:扩链剂的数量。