Polymer dispersion for durable coating, and the coating comprising the same

A coating composition comprising a polymer binder, and from 1% to 40% by dry weight based on total dry weight of the coating composition, titanium dioxide particles, wherein the polymer binder comprises, as polymerized units, by dry weight based on total dry weight of the polymer binder, from 50% to 99%, ethylenically unsaturated nonionic monomers, and from 1% to 5%, a vinyl functionalized benzotriazole having the following Structure (I):

• wherein n is an integer of from 6 to 40;
• wherein R1 is a vinyl-containing group selected from methyl acrylate, methacrylamide, acrylate, acrylamide, vinyl ether, and allyl ether;
• wherein R2 is selected from C1-4 alkylene and C1-5 alkylenylcarboxy;
• wherein X1, X2, X3 or X4 is each independently selected from H, C1-10 alkyl, OH and OCH3;
• and
• wherein Y1, Y2, Y3 or Y4 is each independently selected from H, OH and OCH3.