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:
Feb. 07, 1984
Filed:
Oct. 22, 1982
Applicant:
Inventors:
Rainer Neumann, Krefeld, DE;
Karl Morgenstern, Krefeld, DE;
Karl-August Lipper, Krefeld, DE;
Friedrich Bruhne, Krefeld, DE;
Walter Bockmann, Krefeld, DE;
Clemens Casper, Krefeld, DE;
Siegfried Zingel, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C07C / ;
U.S. Cl.
CPC ...
2041 / ; 2605 / ;
Abstract
Benzoyl chloride is prepared by a process in which the high-boiling residue obtained in the catalytic oxidation of toluene with oxygen or oxygen-containing gases in the liquid phase is largely freed of heavy metal salts which are present, and is then chlorinated at elevated temperatures, optionally under the action of light, and the benzoyl chloride is then separated off.