US Patent Issued to CHEMETALL on Sept. 30 for "Method for purging paint circuits and waterborne purge cleaner" (Spanish Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,567, issued on Sept. 30, was assigned to CHEMETALL GMBH (Frankfurt, Germany).

"Method for purging paint circuits and waterborne purge cleaner" was invented by Jose M. Casamor (Barcelona, Spain), Miguel Angel Jaen Franco (Canovelles, Spain) and Jordi Girbau (Canovelles, Spain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a method for purging paint circuits coated with a non-cured paint with improved cleaning efficiency and a reduced COD (Chemical Oxygen Demand) in the wastewater, where a paint circuit is brought into contact with a waterborne purge cleaner solution including at least one glycolether and which additionally includ...