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PPG Industries patents waterborne coating

Published October 10, 2012
U.S. 8,143,348 B2

PPG Industries has been granted a patent for a coating composition comprised of a continuous phase comprised of water and a dispersed phase comprised of a microgel having a mean particle size of greater than 50 nanometers to 900 nanometers and formed from reactants comprised of no more than 5% by weight, based on the total weight of the reactants, of a multiethylenically unsaturated compound, and a plurality of monoethylenically unsaturated compounds selected so as to provide a copolymer having a calculated Tg of greater than 100° C and comprised of a cycloaliphatic (meth)acrylate.

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