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1. 发明授权

US3972948A Anhydrous catalyst for manufacture of glycol ethers 失效
标题翻译：用于制备二醇醚的无水催化剂
公开(公告)号：US3972948A
公开(公告)日：1976-08-03
申请号：US528425
申请日：1974-11-29
申请人： George Joseph Laemmle , Kenneth Carol Rightmer
发明人： George Joseph Laemmle , Kenneth Carol Rightmer
IPC分类号： C07C41/02 , C07C41/03 , C08G65/26 , C07C41/10
CPC分类号： C08G65/2696 , C07C41/03 , C08G65/2648
摘要： An improved process for preparing mono- and poly-glycol ethers by mixing and reacting an alkylene oxide and an alcohol in the presence of a catalyst containing alkali or alkaline earth cations at temperatures within the range of about 50.degree.to about 350.degree.C. under pressure of between about 30 to about 3,000 psig is disclosed. An anhydrous high boiling liquid residue, prepared by the concentration of the liquid reaction product effluent residue remaining after desired mono- and poly-glycol ethers have been separated therefrom has been found to be highly useful as the catalyst for the described process. The employment of the anhydrous high boiling liquid residue as a catalyst advantageously results in the production of liquid reaction product effluents containing relatively little, if any, undesirable glycol by-products which are difficult to separate from the desired mono- and poly-glycol ethers. In a continuous process for preparing mono- and poly-glycol ethers, the concentrated anhydrous, high boiling liquid residue of the invention can be recycled for admixture with the alkylene oxide and alcohol reactant feed streams in the reactor used as the catalyst of the reaction.
摘要翻译：在含有碱金属或碱土金属阳离子的催化剂存在下，通过在约50℃至约350℃的温度范围内混合并使环氧烷和醇反应来制备单 - 和多 - 二醇醚的改进方法。公开了约30至约3,000psig的压力。已经发现，通过浓缩所需的单 - 和多聚乙二醇醚后残留的液体反应产物流出物残余物制备的无水高沸点液体残余物作为所述方法的催化剂是非常有用的。使用无水高沸点液体残余物作为催化剂有利地导致产生液体反应产物流出物，其含有相对较少的（如果有的话）难以与所需单 - 和多 - 二醇醚分离的二醇副产物。在用于制备单 - 和多 - 二醇醚的连续方法中，本发明的浓缩的无水高沸点液体残余物可以与用作反应催化剂的反应器中的环氧烷烃和醇反应物进料流混合。

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