. . "Further, examples include hydroxyl-containing monomers, for example, acrylate or methacrylate esters such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate and 2-hydroxypropyl methacrylate; 4-(1-hydroxy-1-methylbutyl) styrene, and 4-(1-hydroxy-1-methylhexyl)-styrene." . .