阅读说明：本技术 用于制备低粘度聚氧化烯聚醚多元醇的产物到产物法 (Product-to-product process for preparing low viscosity polyoxyalkylene polyether polyols ) 是由 J·R·里斯 Y·杨 J·F·帕索斯 E·P·布朗 于 2019-12-13 设计创作，主要内容包括：本发明涉及用于制备具有窄分子量分布的低粘度聚氧化烯聚醚多元醇(P)的半分批方法。这种方法包括使H-官能起始剂物质(S-(i))、H-官能起始剂物质(S-(x))和H-官能起始剂物质(S-(c))与一种或多种环氧烷在双金属氰化物(DMC)催化剂存在下反应。所得聚氧化烯多元醇(P)具有2至8的官能度和5至35 mg KOH/g多元醇的羟值。此外,可在低连续添加起始剂(CAOS)封端下完成聚氧烷基化。(The present invention relates to a semi-batch process for preparing low viscosity polyoxyalkylene polyether polyols (P) having a narrow molecular weight distribution. This process comprises reacting an H-functional starter substance (S) i ) H-functional initiator substances (S) x ) And H-functional initiator substances (S) c ) With one or more alkylene oxides in the presence of a Double Metal Cyanide (DMC) catalyst. The resulting polyoxyalkylene polyol (P) has a functionality of 2 to 8 and a hydroxyl number of 5 to 35 mg KOH/g polyol. In addition, polyoxyalkylation can be accomplished with low continuous addition initiator (CAOS) capping.)