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:
Oct. 13, 1987
Filed:
Dec. 30, 1986
Tamio Onodera, Matsuyama, JP;
Akio Namatame, Matsuyama, JP;
Kimihiko Sato, Matsuyama, JP;
Koji Sumitani, Matsuyama, JP;
Teijin Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
A process for continuously isomerizing xylene, which comprises subjecting a hydrocarbon feed material comprising a major proportion of a xylene isomer mixture and a minor proportion of non-aromatic hydrocarbons to xylene isomerization reaction, isolating a specific xylene isomer from the resulting isomerization reaction mixture, and recycling the remaining hydrocarbon mixture to the xylene isomerization reaction; wherein the hydrocarbon feed material or the xylene isomerization reaction mixture is treated with hydrogen in the presence of a cracking catalyst comprising