US Patent 8936390 Method and apparatus for producing paint

The present invention is directed to a method and apparatus for producing an aqueous paint from a plurality of premixed compositions at the point of sale wherein the apparatus is cleaned during the paint production. The premixed compositions include a pigment composition, a dispersant-thickening agent composition, a high resin content binder, and a low resin content binder. The dispersant-thickening agent, when supplied in a cleaning amount, effectively cleans the nozzles and valves, used to supply the premixed compositions to a receiving reservoir for the desired aqueous paint.