For an alkyltin alkoxide catalyst composition used in carbonate production, there is a problem that the alkyltin alkoxide catalyst composition is thermally decomposed by being heated in the production process, changing into an undistillable alkyltin alkoxide catalyst composition containing a high boiling deactivated component and an active component. The present invention provides a method for separating out and recovering the active component from the alkyltin alkoxide catalyst composition as a useful dialkyltin dialkoxide. According to the present invention, there is disclosed a method in which such an undistillable alkyltin alkoxide catalyst composition containing a high boiling deactivated component and an active component is reacted with an alcohol and/or a carbonate, so as to obtain a reaction liquid containing a product originating from the active component, and then the reaction liquid is subjected to distillation, so as to separate out and recover a dialkyltin dialkoxide from the product originating from the active component.
在
碳酸盐生产中使用的烷基
锡烷氧化物催化剂组合存在一个问题,即在生产过程中加热会使烷基
锡烷氧化物催化剂组合热分解,变成一个含有高沸点失活组分和活性组分的不可蒸馏的烷基
锡烷氧化物催化剂组合。本发明提供了一种从烷基
锡烷氧化物催化剂组合中分离和回收活性组分作为有用的二烷基
锡二烷氧化物的方法。根据本发明,揭示了一种方法,其中这种含有高沸点失活组分和活性组分的不可蒸馏的烷基
锡烷氧化物催化剂组合与醇和/或
碳酸盐反应,以获得一种含有来自活性组分的产物的反应液,然后将反应液蒸馏,以从来自活性组分的产物中分离和回收二烷基
锡二烷氧化物。