Process for the purification of diisopropenylbenzene

Details Process for the purification of diisopropenylbenzene Process for the purification of diisopropenylbenzene

C - Chemistry, Metallurgy

07

C

260/716

C07C 7/04 (2006.01) C07C 7/163 (2006.01) C07C 15/44 (2006.01)

Patent

CA 1217505

ABSTRACT OF THE DISCLOSURE A PROCESS FOR THE PURIFICATION OF DIISOPROPENYLBENZENE This invention discloses a process for the separation of diisopropenylbenzene from organic impurities in a dehydrogenation mixture comprising: (1) hydrogenating said dehydrogenation mixture to a maximum isopropenylstyrene concentration of no more than about 5% by weight in the presence of a rhodium catalyst and hydrogen to form a hydrogenated dehydrogenation mixture, followed by, (2) fractionally distilling said hydrogenated dehydrogenation mixture under conditions sufficient to separate said diisopropenylbenzene from said organic impurities in said hydrogenated dehydrogenation mixture.

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