Method of producing high-boiling byproducts of isoprene production

摘要

A method of processing high-boiling byproducts of isoprene production obtained at the first stage of isoprene production by the dioxane method into isoprene, isobutylene and formaldehyde which comprises the catalytic splitting of said products in the vapor phase in the presence of water with a weight ratio therebetween of 1:1/2, respectively, at 250-290 DEG C over aluminum oxide as catalyst. The resulting vapor mixture is catalytically split at 315 DEG -360 DEG C over calcium-phosphate catalyst with the formation of a reaction mixture containing isoprene, isobutylene and formaldehyde.