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    • 7. 发明授权
    • Polyurethane elastomers having improved physical properties and a process for the production thereof
    • 具有改善的物理性质的聚氨酯弹性体及其制备方法
    • US07511111B2
    • 2009-03-31
    • US11374789
    • 2006-03-14
    • Bruce D. LawreyKurt C. FrischNigel Barksby
    • Bruce D. LawreyKurt C. FrischNigel Barksby
    • C08G18/12C08G18/10C08G18/48C08G18/32C08G18/40
    • C08G18/4866C08G18/10C08G18/3206
    • A polyol composition having a number average molecular weight of from about 1,000 to about3,000 Daltons is made up of (1) at least 55% by weight of a low monol polyoxypropylene polyol having a number average molecular weight of from about 1,000 to 12,000 Da and a degree of unsaturation less than or equal to 0.02 meq/g and (2) no more than 45% by weight of a polyol having a number average molecular weight of from about 400 to about 1,000 Da and a polydispersity index greater than1.1. This polyol composition is reacted with a diisocyanate, a polyisocyanate, an isocyanate-terminated prepolymer or an isocyanate-terminated quasi-prepolymer to produce polyurethanes, particularly, polyurethane elastomers having good physical and mechanical properties. Any of the known processes for producing polyurethanes, particularly, elastomers, including one-shot processes, may be used to produce polyurethanes in accordance with the present invention.
    • 数均分子量为约1,000至约3,000道尔顿的多元醇组合物由以下组成:(1)至少55重量%的数均分子量为约1,000至12,000Da的低一羟基聚氧丙烯多元醇 和不足于0.02meq / g的不饱和度和(2)不超过45重量%的数均分子量为约400至约1,000Da的多元醇和多分散指数大于1.1 。 该多元醇组合物与二异氰酸酯,多异氰酸酯,异氰酸酯封端的预聚物或异氰酸酯封端的预预聚物反应以制备聚氨酯,特别是具有良好物理和机械性能的聚氨酯弹性体。 用于生产聚氨酯的任何已知方法,特别是弹性体,包括一步法,可用于制备根据本发明的聚氨酯。