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. 07, 2000
Filed:
May. 08, 1998
Applicant:
Inventors:
C Bradford Boyce, Baton Rouge, LA (US);
Randolph K Belter, Zachary, LA (US);
Assignee:
LaRoche Industries Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 20 ; 502 22 ; 502 35 ; 502 36 ; 502224 ; 502227 ; 502228 ; 502229 ;
Abstract
A method for removing high molecular weight solid and liquid tars and oligomers from halogenated Lewis acids catalysts is disclosed. The Lewis acids incorporating such tars and oligomers are treated with an oxidizing agent such as chlorine, a halogen fluoride or mixtures thereof for a time and at a temperature sufficient to oxidize said solid tars and oligomers. The oxidation causes such tars and oligomers to form oxidation products, which can be separated from the halogenated Lewis acid.