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. 04, 2011
Filed:
Jun. 30, 2009
Konrad Geissler, Zürich, CH;
Marius Kuemin, Huenenberg, CH;
Konrad Geissler, Zürich, CH;
Marius Kuemin, Huenenberg, CH;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Embodiments of the present disclosure include cleaning processes, cleaning machines, and methods of preventing acidification of a cleaning composition in a cleaning process. The cleaning process includes contacting an article having contaminants with a cleaning composition to remove the contaminants from the article, where the cleaning composition comes to have acidic components as a result of contacting the article with the cleaning composition, and where at least 85 percent by weight, based on a total weight of the cleaning composition, of the cleaning composition is an organic solvent, collecting the cleaning composition with the contaminants and the acidic components, separating the contaminants from the cleaning composition (), and passing the cleaning composition with the acidic components over an ion exchange resin () to remove the acidic components from the cleaning composition.