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Dry Cleaning Method From GreenEarth Cleaning

Published February 4, 2013
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US Patent No. 8,123,819 B2; GreenEarth Cleaning, LLC., Kansas City, MO, has patented a method of dry cleaning articles. The method entails inserting articles into a cleaning basket of a dry cleaning machine; immersing the articles in a cleaning fluid comprising a siloxane solvent composition; agitating them in a siloxane solvent composition; filtering the siloxane solvent composition through at least one regenerative filter having a pre-coating comprising an activated clay and removing the siloxane composition from the articles. It also entails regenerating the filter at a periodic time by removing the first coating and pre-coating the filter with a second coating comprising an activated clay for preventing oligomerization of at least one coating activated clay and solvent.

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