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:
Nov. 25, 1980
Filed:
Nov. 02, 1979
Applicant:
Inventor:
Joseph E Milam, New Martinsville, WV (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
370210 ;
Abstract
Dichlorobenzene having a higher ratio of para isomer to ortho isomer is produced by the liquid phase chlorination of benzene or monochlorobenzene in the presence of a two-component catalyst consisting of a metal halide, e.g., ferric chloride, and diethylether.