Kansai Paint Patents Aqueous Primer

April 1, 2013

U.S. 8,216,490 B2
Kansai Paint Co. has been granted a patent for an aqueous primer composition comprised of an aqueous dispersion of modified polyolefin which is comprised of an unsaturated carboxylic acid- or acid anhydride-modified polyolefin having a melting point of 120° C or lower and a weight average molecular weight of 30,000 to 180,000, dispersed in an aqueous medium, an ionic functional group-containing acrylic resin, and a conductive carbon-containing pigment, which forms a coating film with an L value of 35 or more and a surface resistivity of 1×108 Ω/sq or less, wherein the ionic functional group-containing acrylic resin has at least one species of ionic functional group selected from tertiary amino group and quaternary ammonium base, and has an ionic functional group containing unsaturated monomer unit in an amount ranging from 1 to 40 mole percent.

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