Method of producing high-boiling byproducts of isoprene producti

Details Method of producing high-boiling byproducts of isoprene producti Method of producing high-boiling byproducts of isoprene producti

1975-04-01

1977-12-06

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260677R, 260681, C07C 4704, C07C 1108, C07C 1118

Patent

active

040616800

ABSTRACT:
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.degree. C over aluminum oxide as catalyst. The resulting vapor mixture is catalytically split at 315.degree.-360.degree. C over calcium-phosphate catalyst with the formation of a reaction mixture containing isoprene, isobutylene and formaldehyde.

REFERENCES:
patent: 3057923 (1962-10-01), Hellen et al.

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