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    • 4. 发明授权
    • Thermoplastic polyurethanes
    • 热塑性聚氨酯
    • US08507633B2
    • 2013-08-13
    • US12293103
    • 2007-04-11
    • Oliver Steffen HenzeRuediger KrechFrank PrissokKarin SchefferFrank SchaeferHeinrich Niermann
    • Oliver Steffen HenzeRuediger KrechFrank PrissokKarin SchefferFrank SchaeferHeinrich Niermann
    • C08G18/00
    • A43B1/14A43B5/04C08G18/4854C08G18/6674C08G2120/00
    • A process for the preparation of thermoplastic polyurethane by reacting (a) isocyanates with (b) compounds reactive toward isocyanates and having a molecular weight (Mw) of from 500 to 10 000 g/mol and (c) chain extenders having a molecular weight of from 50 to 499 g/mol, if appropriate in the presence of (d) catalysts and/or (e) conventional additives, wherein the 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 rigid phase fraction of greater than 0.40, the rigid phase fraction being defined by the following formula: rigid ⁢ ⁢ phase ⁢ ⁢ fraction = { ∑ x = 1 k ⁢ [ ( m KVx / M KVx ) * M Iso + m KVx ] } / m ges with the following meanings: 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 mges: total mass of all starting materials in g k: number of chain extenders.
    • 一种通过使(a)异氰酸酯与(b)对异氰酸酯具有反应性并且分子量(Mw)为500至10000g / mol的化合物和(c)分子量为 在(d)催化剂和/或(e)常规添加剂的存在下,如果合适,其为50至499g / mol,其中由主链延长剂(c1)和一种或多种共扩链剂( c2),所制备的热塑性聚氨酯具有大于0.40的刚性相分数,刚性相分数由下式定义:刚性相凝固分数= {Σx = 1 k [(m KVx / M KVx)* M Iso + m KVx]} / m ges,具有以下含义:MKVx:扩链剂的摩尔质量x(g / mol)mKVx:扩链剂的质量(以g计)MIso:所用异氰酸酯的摩尔质量 以g / mol mges为单位:所有原料的总质量(gk):增链剂数量。