The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 1992
Filed:
Apr. 09, 1991
Patrick Chaumette, Bougival, FR;
Germain Martino, Poissy, FR;
Catherine Verdon, Rueil Malmaison, FR;
Serge Leporq, Mantes la Ville, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
A process for obtaining a tertiary olefin, e.g. isobutylene in a very pure state by decomposing the corresponding ether, e.g. methyl tert. butyl ether, in the presence of a catalyst constituted by silica, modified by the addition of at least one element or compound of an element preferably chosen from the group constituted by rubidium, cesium, magnesium, calcium, strontium, barium, gallium, lanthanum, cerium, praseodymium, neodymium and uranium and optionally by the addition of at least one element or compound of an element chosen from the group constituted by aluminium, titanium and zirconium.