. "The glass transition temperature (Tg) temperature for the polymer pigment particles is preferably 35???-80??? C., and ideally 45???-65??? C. Materials useful for the polymer pigments may include polyurethanes, polyesters, polytetrafluoroethylene and other fluorocarbon polymers, polycarbonates, polyarylethers, polybutadiene and copolymers thereof with styrene, vinyl/toluenes, acrylates, polysulfone" . . .