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US 4,045,370 AGranted
Catalyst for the depolymerization of lower polymers of isobutene
AssigneePetro-Tex Chemical Corporation
InventorWilliam Ronald Cares
Life of this patent
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Abstract
Oligomers of isobutene are depolymerized at 200.degree. to 580.degree. C in vapor phase by contact with a catalyst consisting essentially of the oxide of Cr, Mo or W on a high surface area silica support.
Claims1
A catalyst composition for the depolymerization of olefin polymers consisting essentially of an oxide of tungsten on a silica support having a surface area over 50 square meters per gram prepared by the process of mixing an aqueous solution of H.sub.4 SiW.sub.12 O.sub.40 onto a silica gel and drying the mixture.
Dependencies are inferred from the claim text.