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    • 28. 发明公开
    • DUAL CATALYST SYSTEM FOR HIGH PRIMARY HYDROXYL POLYOLS
    • 双原料羟基多元醇催化剂体系
    • EP3209706A1
    • 2017-08-30
    • EP15791819.4
    • 2015-10-19
    • Dow Global Technologies LLC
    • RAGHURAMAN, ArjunSCHAEFER, MatthiasMASY, Jean-PaulLAITAR, David S.
    • C08G65/26B01J27/26
    • C08G65/269B01J23/75B01J27/26C08G65/2654C08G65/266C08G65/2663C08G65/2696
    • A method of producing a high primary hydroxyl group content and a high number average molecular weight polyol includes preparing a mixture that includes a double metal cyanide catalyst and a low molecular weight polyether polyol having a number average molecular weight of less than 1,000 g/mol, the polyether polyol is derived from propylene oxide, ethylene oxide, or butylene oxide, setting the mixture to having a first temperature, adding at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the mixture at the first temperature, allowing the mixture to react to form a reacted mixture, adding a Lewis acid catalyst to the reacted mixture, setting the reaction mixture including the second catalyst to have a second temperature that is less than the first temperature, and adding additional at least one selected from propylene oxide, ethylene oxide, and butylene oxide to the reacted mixture at the second temperature such that a resultant polyol having a primary hydroxyl group content of at least 60% and a number average molecular weight greater than 2,500 g/mol is formed.
    • 产生高伯羟基含量和高数均分子量多元醇的方法包括制备包含双金属氰化物催化剂和数均分子量小于1,000g / mol的低分子量聚醚多元醇的混合物, 聚醚多元醇衍生自环氧丙烷,环氧乙烷或环氧丁烷,使混合物具有第一温度,在第一温度下将至少一种选自环氧丙烷,环氧乙烷和环氧丁烷的混合物加入混合物中,使得 混合物反应以形成反应混合物,向反应混合物中加入路易斯酸催化剂,使包含第二催化剂的反应混合物具有小于第一温度的第二温度,并加入另外的选自环氧丙烷 ,环氧乙烷和环氧丁烷在第二温度下加入到反应后的混合物中, 形成至少60%的droxyl基含量和大于2,500g / mol的数均分子量。