会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Process for the production of polyetherester polyols and the products
and use thereof
    • 生产聚醚醚多元醇及其产品及其用途的方法
    • US4605729A
    • 1986-08-12
    • US784071
    • 1985-10-04
    • James M. BarnesWerner Betz
    • James M. BarnesWerner Betz
    • C08G18/42C08G18/48C08G63/668C08G63/66
    • C08G18/4252C08G18/4244C08G18/4887C08G63/668
    • The invention provides a process for the production of polyetherester polyols which have hydroxyester groups terminally bound via ester groups to high molecular weight polyether polyol segments. These are produced by first reacting high molecular weight polyoxyalkylene ether polyols with molecular weights of from about 400 to 10,000 with an excess of dicarboxylic acids, dicarboxylic acid anhydrides or dicarboxylic acid esters, and then reacting the intermediate product in a further stage with an excess of diols, based on carboxyl groups.The new, high molecular weight polyetherester polyols thus consist of polyoxyalkylene ether segments, which have terminal ester segments in each case with terminal hydroxyl groups per end group.Moreover, the use is claimed of the high molecular weight polyetherester polyols as polyhydroxyl compounds for forming polyurethanes.
    • 本发明提供了一种生产聚酯多元醇的方法,所述聚醚酯多元醇具有通过酯基终止结合到高分子量聚醚多元醇链段上的羟基酯基团。 这些是通过首先使分子量为约400至10,000的高分子量聚氧化烯醚多元醇与过量的二羧酸,二羧酸酐或二羧酸酯反应制备的,然后使中间产物在另一阶段与过量的 二醇,基于羧基。 因此,新的高分子量聚醚酯多元醇由聚氧化烯醚链段组成,每个端基具有末端羟基的末端酯链段。 此外,要求使用高分子量聚醚酯多元醇作为形成聚氨酯的多羟基化合物。