Process for preparing TPU molding compositions
    21.
    发明授权
    Process for preparing TPU molding compositions 失效
    制备TPU模塑组合物的方法

    公开(公告)号:US5696205A

    公开(公告)日:1997-12-09

    申请号:US629983

    申请日:1996-04-08

    摘要: A process for the continuous production of a thermoplastic molding composition containing a mixture of TPU and a (co)polymer is disclosed. The process comprises (a) introducing into an extruder under time and temperature conditions sufficient to bring about the formation of thermoplastic polyurethane a (co)polymer, and polyurethane-forming components comprising A) an organic diisocyanate, B) a linear polyol having terminal hydroxyl groups and a molecular weight of 500 to 5000, and C) a chain extender having a molecular weight of 60 to 500, and upon completing the formation of said polyurethane (b) discharging the resulting TPU/(co)polymer mixture from the extruder. Importantly, the (co)polymer contains a flow enhancer and the molar ratio of the NCO groups in A) to the groups which react with NCO in B) and C) is 0.9 to 1.2.

    摘要翻译: 公开了一种连续生产含有TPU和(共)聚合物的混合物的热塑性模塑组合物的方法。 该方法包括(a)在足以导致形成热塑性聚氨酯a(共)聚合物的时间和温度条件下引入挤出机,以及包含A)有机二异氰酸酯的聚氨酯形成组分,B)具有末端羟基的线性多元醇 基团,分子量为500至5000,和C)分子量为60至500的扩链剂,并且在完成形成所述聚氨酯(b)时,从所述挤出机中排出所得TPU /(共)聚合物混合物。 重要的是,(共)聚合物含有流动增强剂,A)中的NCO基团与在B)和C)中与NCO反应的基团的摩尔比为0.9至1.2。

    Process for the preparation of thermoplastic polyurethane elastomers
    22.
    发明授权
    Process for the preparation of thermoplastic polyurethane elastomers 失效
    制备热塑性聚氨酯弹性体的方法

    公开(公告)号:US5200491A

    公开(公告)日:1993-04-06

    申请号:US903416

    申请日:1992-06-24

    摘要: This invention relates to a process for standardized preparation of thermoplastic polyurethane elastomers by deactivating metal traces during the reaction, at an NCO:OH ratio of between about 0.85 and about 1.2:1, of(a) substantially linear hydroxyl-terminated polyols;(b) organic diisocyanates;(c) optional diol chain extenders; and(d) optional catalysts or other auxiliaries and/or additives, in the presence of(e) 0.000001 to 0.3% by weight, based on the total weight of the other components, of certain phosphorus compounds, wherein the phosphorus compounds are added to one or more of the other components before or during preparation of the thermoplastic polyurethane elastomers.

    摘要翻译: 本发明涉及通过在(a)基本上线性的羟基封端的多元醇的约0.85和约1.2:1之间的NCO:HOH比例反应期间使金属痕迹失活来标准制备热塑性聚氨酯弹性体的方法; (b)有机二异氰酸酯; (c)任选的二醇增链剂; 和(d)任选的催化剂或其它助剂和/或添加剂,在(e)0.000001至0.3重量%的存在下,基于其它组分的总重量,某些磷化合物,其中将磷化合物加入 一种或多种其它组分在制备热塑性聚氨酯弹性体之前或期间。