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:
Jul. 19, 1988
Filed:
Jul. 14, 1986
Applicant:
Inventor:
Vera M Knowles, Martinez, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; B09B / ; B09B / ; G21F / ;
U.S. Cl.
CPC ...
423659 ; 134 2214 ; 134 2219 ; 134 251 ; 134 42 ; 208262 ; 405129 ; 423500 ; 110342 ;
Abstract
The present invention relates to a process for the solvent extraction of polychlorinated organic compounds from porous materials. Specifically, the present invention describes a process for the use of a solvent extraction of polychlorinated organic compounds, such as hexachloroethane, hexachlorobutadiene and hexachlorobenzene from porous materials, such as a vinyl ester resin. When the level of hexachlorinated organic compounds is reduced to a level of 7 ppm or below, the porous material may be disposed of in an environmentally acceptable manner such as by incineration or by landfill.