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:
Jun. 27, 1978
Filed:
Aug. 23, 1977
Applicant:
Inventor:
Ivan James Lake, Middlesbrough, EN;
Assignee:
Imperial Chemical Industries Limited, London, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2606 / ; 2606 / ;
Abstract
Aromatic hydrocarbons are alkylated in the presence of zeolite nu-1 as catalyst. The invention particularly relates to the production of xylene by the methylation of toluene at temperatures in the range 300.degree. to 600.degree. C, preferably in the range from about 450.degree. to 550.degree. C.