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:
May. 17, 1977
Filed:
Aug. 01, 1975
Applicant:
Inventors:
Harry E Buckholtz, Kenmore, NY (US);
Arun C Bose, Tonawanda, NY (US);
Assignee:
Hooker Chemicals & Plastics Corporation, Niagara Falls, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2524 / ;
Abstract
In the process for the nuclear chlorination of alkylbenzenes, such as toluene, in the presence of a para-directing catalyst system comprising a substantially iron-free Lewis acid catalyst and thianthrene compound co-catalyst, wherein the reaction mixture is in contact with iron or an alloy thereof, the para-directing effect of the catalyst system is improved by the addition of an amide.