公开(公告)号：US20050215831A1

公开(公告)日：2005-09-29

申请号：US10514713

申请日：2003-06-18

申请人： Ralf Zieler ,  Iris Groth ,  Christian Buss ,  Monika Wetterling

发明人： Ralf Zieler ,  Iris Groth ,  Christian Buss ,  Monika Wetterling

IPC分类号： C08G65/30 ,  C07C43/11

CPC分类号： C08G65/30

摘要： The invention relates to a process for the work-up of polyether alcohols which have been prepared by base-catalyzed addition of ethylene oxide and propylene oxide onto H-functional starter substances and have a proportion of ethylene oxide in the polyether chain of greater than 20% by weight, preferably greater than 25% by weight, particularly preferably greater than 35% by weight and in particular greater than 50% by weight, based on the weight of the alkylene oxides used, which comprises the steps a) neutralization of the polyether alcohol with an acid subsequent to the addition reaction of the alkylene oxides, b) addition of at least one absorbent, c) removal of water and volatile compounds from the polyether alcohol, d) removal of the salts formed and the absorbents from the polyether alcohol, wherein phosphoric acid is used as acid in step a) in an amount of from 56 to 98% of the stoichiometric amount, the absorbent is used in an amount of from 0.05 to 5% by weight, based on the polyether alcohol, in step b) and at least one alkali metal hydroxide, alkaline earth metal hydroxide or amine is added to the polyether alcohol in an amount of from 0.001 to 0.5% by weight, based on the weight of the polyetherol, during the course of step c).

摘要翻译： 本发明涉及一种用于后处理聚醚醇的方法，其通过在H官能起始物质上碱式催化加成环氧乙烷和环氧丙烷而制备，并且聚醚链中环氧乙烷的比例大于20 重量％，优选大于25重量％，特别优选大于35重量％，特别优选大于35重量％，特别优选大于50重量％，其包括以下步骤：a）中和聚醚 乙醇与烯化氧的加成反应之后的酸，b）加入至少一种吸收剂，c）从聚醚醇中除去水和挥发性化合物，d）除去形成的盐和来自聚醚醇的吸收剂 其中在步骤a）中使用磷酸作为化学计量的56-98％的量的步骤a）中的酸，吸收剂的用量为0.05-5重量％，基于p 醚醚醇，在步骤b）中，并且至少一种碱金属氢氧化物，碱土金属氢氧化物或胺以0.001至0.5重量％的量加入到聚醚醇中，基于聚乙烯醇的重量，在该过程中 的步骤c）。