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:
Jun. 05, 1990
Filed:
Apr. 21, 1989
Applicant:
Inventor:
Carl M Wilwerding, Klamath Falls, OR (US);
Assignee:
Advanced Refinery Technology, Klamath Falls, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C07C / ;
U.S. Cl.
CPC ...
2082625 ; 210909 ; 423659 ; 423D / ; 585469 ;
Abstract
Polychlorinated biphenyls are chemically degraded by contact with a Lewis acid catalyst in a non-aqueous liquid medium, in the presence of a cation which combines with the chlorines on the PCBs to form a solid chloride of the cation which will precipitate out from the liquid medium. Preferred Lewis acids are metal halides, particularly a combination of aluminum chloride and ferric chloride, and the preferred cation is potassium in the form of potassium hydroxide. The process is susceptible to both batch and continuous operation.