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:
Jan. 26, 1993
Filed:
Jun. 13, 1990
Applicant:
Inventors:
Raymond Commandeur, Vizille, FR;
Gilles Drivon, Saint-Martin en Haut, FR;
Elie Ghenassia, Grenoble, FR;
Assignee:
Atochem, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 29 ; 203D / ; 570211 ; 585462 ; 585833 ;
Abstract
Mixtures of isomers, e.g., mixtures of phenethyl bromide and 1-phenyl-1-bromoethane, are separated by (a) selectively condensing one such isomer with an aromatic compound bearing at least one aryl (nuclear) hydrogen atom, e.g., xylene, in the presence of a catalytically effective amount of a Friedel-Crafts catalyst, e.g., ferric chloride, and then (b) separating the product of condensation, e.g., phenylxylylethane, from the unreacted isomer.