It is an object of the present invention to provide a method for producing a terminal-modified polybutadiene or terminal-modified hydrogenated polybutadiene that does not become colored or white and turbid, without using an organotin compound. The production method of the present invention comprises reacting an acrylate or methacrylate represented by formula (I), a diisocyanate compound represented by formula (II), and a polybutadiene or hydrogenated polybutadiene having a hydroxyl group at a polymer terminal, represented by formula (III), in the presence of at least one selected from an organoaluminum compound and an organozinc compound (with the proviso that zinc naphthenate is excluded).
本发明的目的是提供一种生产端改性聚
丁二烯或端改性氢化聚
丁二烯的方法,该聚
丁二烯或氢化聚
丁二烯在不使用
有机锡化合物的情况下不会变色或变白和浑浊。本发明的生产方法包括在至少一种选自
有机铝化合物和
有机锌化合物(但
环烷酸锌除外)的存在下,使式(I)代表的
丙烯酸酯或
甲基丙烯酸酯、式(II)代表的二
异氰酸酯化合物和在聚合物末端具有羟基的式(III)代表的聚
丁二烯或氢化聚
丁二烯反应。