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:
Mar. 27, 1990
Filed:
Oct. 21, 1988
Applicant:
Inventors:
Mark H Krackov, Wilmington, DE (US);
Charles H Rolston, Woodbury, NJ (US);
Assignee:
E. I. Du Pont De Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
570141 ;
Abstract
Process which comprises feeding an aromatic amine in the presence of HF to a reaction zone simultaneously with a diazotizing agent so as to effect diazotization of the aromatic amine, thermally decomposing the resulting diazonium salt substantially as it is formed, and removing the resulting fluoroaromatic compound from the reaction zone substantially as it is formed. The amine and the diazotizing agent are fed to the reaction zone in such quantities and proportions that they are consumed substantially as fed so that no substantial concentration of either builds up in the reaction zone.