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:
Jan. 01, 1985
Filed:
Oct. 13, 1983
Sumihiro Oda, Sodegaura, JP;
Haruhito Sato, Sodegaura, JP;
Idemitsu Kosan Company Limited, Tokyo, JP;
Abstract
A process for the production of para-xylene is described, comprising methylating benzene or toluene in the presence of a catalyst composed mainly of (A) crystalline borosilicate and (B) a compound containing at least one element selected from the group consisting of Group IIa elements of the Periodic Table, Group IIIa elements of the Periodic Table, silicon, and phosphorus. The process of the invention enables to produce para-xylene in a high selectivity and a high yield. Since the life of the catalyst as used herein is very long, the process of the invention can be performed continuously for long periods of time while maintaining its high catalytic activity.