申请人:Ube Industries, Ltd.
公开号:EP0950659A2
公开(公告)日:1999-10-20
1,2-epoxy-5,9-cyclododecadiene is produced with a high selectivity thereto by epoxidizing 1,5,9-cyclododecatriene in a continuous multi-stage oxidation apparatus having a plurality of reactors connected to each other in series in such a manner that (1) in a first reactor, 1,5,9-cyclododecatriene, hydrogen peroxide, catalyst components and optionally a mineral acid are subjected to an epoxidation reaction; (2) the resultant reaction mixture delivered from the first reactor is passed through one or more succeeding reactors to further epoxidize the non-reacted 1,5,9-cyclododecatriene with the non-reacted hydrogen peroxide; and (3) the final reaction mixture produced in a rearend reactor is delivered from the oxidation apparatus, and optionally subjected to an isolation-refining procedure wherein the target 1,2-epoxy-5,9-cyclododecadiene is refined and collected and the non-reacted 1,5,9-cyclododecatriene is recovered and recycled to the epoxidation procedure.
(1) 在第一反应器中,1,5,9-环十二碳三烯、过氧化氢、催化剂组分和可选的矿物酸进行环氧化反应;(2) 从第一反应器输出的反应混合物通过一个或多个后续反应器,使未反应的 1,5,9-环十二碳三烯与未反应的过氧化氢进一步环氧化;(3) 从氧化装置输送在后反应器中产生的最终反应混合物,并选择性地进行分离精制程序,在该程序中精制和收集目标 1,2-环氧-5,9-环十二碳二烯,回收未反应的 1,5,9-环十二碳三烯并将其再循环至环氧化程序。