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:
Oct. 19, 1993
Filed:
Jul. 20, 1992
Edwin C Zuerner, Troy, MI (US);
Robert R Petzeit, Bloomfield Hills, MI (US);
Norman Foster, Bloomfield Hills, MI (US);
Nortru, Inc., Detroit, MI (US);
Abstract
A process for treating spent aqueous emulsion material formed from a non-volatile hydrocarbon organic portion having a paint solids content greater than about 10% by weight in which the spent emulsion is broken and the organic phase is admixed with sufficient amounts of a hydrocarbon solvent extractant to extract organic portions of the aqueous emulsion. The hydrocarbon solvent extractant and the organic portion/solvent extractant mixture can then be distilled to provide essentially pure hydrocarbon solvent extractant and the hydrocarbon organic portion of the emulsion essentially free from paint solids. The organic portion of the material can then be admixed with quantities of water to reform a reclaimed emulsion. Examples of the paint overspray treatment emulsion on which the process of the present invention is highly effective is one which contains a hydrocarbon such as an alcohol ester, an alcohol ester derivative or mixtures of the two in combination in its organic phase.