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    • 2. 发明授权
    • Process for improving thermoplastic polyurethanes
    • 改进热塑性聚氨酯的方法
    • US4169196A
    • 1979-09-25
    • US842063
    • 1977-10-14
    • Benjamin S. EhrlichCurtis P. Smith
    • Benjamin S. EhrlichCurtis P. Smith
    • C08G18/16C08G18/24C08G18/28C08G18/66C08K5/51C07C41/12C08K5/52
    • C08G18/6607C08G18/161C08G18/24C08G18/28C08K5/49C08K5/51
    • An improved process for the preparation of thermoplastic polyurethane elastomers by a one-shot reaction of an organic diisocyanate, a polymeric diol, and a diol extender is disclosed wherein the diol components, either singly or together, are treated with a trivalent phosphorus compound prior to their reaction with the diisocyanate in the presence of a stannous tin urethane catalyst. The process when carried out with pure urethane grade diol components results in very efficient catalysis which in turn requires lower levels of stannous tin catalyst than would otherwise be employed. Moreover, the process can be carried out with diol components that are not urethane grade materials but which are contaminated by high levels of peroxidic impurities and which materials would otherwise be useless for the preparation of high grade elastomer products.
    • 公开了通过有机二异氰酸酯,聚合二醇和二醇增量剂的单次反应制备热塑性聚氨酯弹性体的改进方法,其中单独或一起的二醇组分在三价磷化合物之前用 它们与二异氰酸酯在亚锡锡聚氨酯催化剂存在下的反应。 用纯氨基甲酸乙酯级二醇组分进行的方法导致非常有效的催化,其反过来需要比其它方法更低水平的锡锡催化剂。 此外,该方法可以用不是聚氨酯级材料但被高水平过氧化物杂质污染的二醇组分进行,否则这些材料对于制备高级弹性体产品将是无用的。
    • 8. 发明授权
    • Novel polyurethane product
    • 新型聚氨酯产品
    • US4379904A
    • 1983-04-12
    • US371534
    • 1982-04-26
    • Benjamin S. EhrlichRichard W. Oertel, III
    • Benjamin S. EhrlichRichard W. Oertel, III
    • C08G18/40C08G18/48C08G18/66
    • C08G18/4018C08G18/4804C08G18/66
    • Improved thermoplastic polyurethane elastomers are disclosed which are the reaction product of 4,4'-methylene-bis(phenyl isocyanate); a polymeric diol; and an extender wherein the equivalent proportions of said diol to said extender fall within the range of about 1:2 to about 1:20 and the isocyanate to total hydroxyl equivalents are within the range of about 0.99:1 to 1.06:1, the improvement which comprises replacing at least about 15 percent by weight of said polymeric diol by a polyol selected from the class consisting of: (i) polyoxypropylene-polyoxyethylene glycols having a molecular weight of about 3500 to about 4500 and an ethylene oxide content of about 10 to about 60 percent by weight; (ii) polyoxypropylene-polyoxyethylene triols having a molecular weight from about 5000 to about 7000 and an ethylene oxide content of about 10 to about 40 percent by weight; and (iii) mixtures of (i) and (ii).The elastomers find particular utility in the manufacture of ski boots, hockey boots and automotive exterior panels, bumpers, fascia, and the like.
    • 公开了改进的热塑性聚氨酯弹性体,其是4,4'-亚甲基 - 双(苯基异氰酸酯)的反应产物; 聚合二醇; 和增量剂,其中所述二醇与所述增量剂的当量比例在约1:2至约1:20的范围内,异氰酸酯与总羟基当量的比例在约0.99:1至1.06:1的范围内,改进 其包括用选自以下的多元醇代替至少约15重量%的所述聚合二醇:(i)分子量为约3500至约4500的聚氧丙烯 - 聚氧乙烯二醇和约10至约10的环氧乙烷含量, 约60重量% (ii)分子量为约5000至约7000并且环氧乙烷含量为约10至约40重量%的聚氧丙烯 - 聚氧乙烯三醇; 和(iii)(i)和(ii)的混合物。 弹性体在制造滑雪靴,曲棍球靴和汽车外部面板,保险杠,面板等方面具有特别的用途。