聚氨酯和产生聚氨酯的方法

文档序号:652994 发布日期:2021-04-23 浏览:27次 >En<

阅读说明:本技术 聚氨酯和产生聚氨酯的方法 (Polyurethane and method for producing polyurethane ) 是由 K·A·帕坦卡 A·拉古拉曼 T·P·维拉姆斯塔德 M·F·索南夏因 J·亨宁 H·A·斯 于 2019-09-17 设计创作,主要内容包括:公开了聚氨酯,所述聚氨酯按一次进料法从一种或多种具有至少350的羟基当量的多元醇产生,其中至少50%重量的iii)是含羟基的环氧丙烷聚合物,所述含羟基的环氧丙烷聚合物具有至少350的羟基当量、平均每分子1.8至3个羟基,所述羟基中40%至70%为伯羟基、基于所述聚合物的重量按重量计不大于10%的氧乙烯含量和1.175或更小的多分散度。所述聚氨酯表现出优异的机械特性,高度吸湿并且快速固化。(Polyurethanes produced in a one-shot process from one or more polyols having a hydroxyl equivalent weight of at least 350 are disclosed, wherein at least 50% by weight of iii) is a hydroxyl group-containing propylene oxide polymer having a hydroxyl equivalent weight of at least 350, an average of from 1.8 to 3 hydroxyl groups per molecule, from 40% to 70% of the hydroxyl groups being primary hydroxyl groups, an oxyethylene content of not more than 10% by weight based on the weight of the polymer, and a polydispersity of 1.175 or less. The polyurethanes exhibit excellent mechanical properties, are highly hygroscopic and cure rapidly.)

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