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National Starch Granted Patent for Substrate Application
August 12, 2003
The United States Patent Office granted a patent to National Starch and Chemical for its application method for aqueous polymer dispersion to a substrate. In essence, this technology involves precision polymer dispersion application by airless spray. The patented process results in the precise coating of a polymer on the substrate surface without the need for dilution water, with penetration into the substrate achieved by control of pressure, nozzle type and solids content of the emulsion at spraying.