Disclosed are multi-component waterborne coating compositions that include
a first component and a second component which are mixed together prior
to application of the composition to a substrate. The first component
includes an aqueous dispersion of (i) a polycarbonate-polyurethane
polymer, and (ii) an acrylic polyol having a number average molecular
weight of no more than 5,000. The second component includes a material
having functional groups reactive with the functional groups of the
acrylic polyol and/or the polycarbonate-polyurethane polymer. Also
disclosed are coatings formed from such compositions and substrates at
least partially coated with such compositions.