Thin Solid Films, Vol.519, No.15, 5243-5248, 2011
Synthesis and properties of UV-curable hyperbranched polymers for ink-jet printing of color micropatterns on glass
Hyperbranched polyurethane-methacrylates were synthesized and used as oligomers for ink-jet printing of LCD color filters. Pigment-based inks containing these hyperbranched polymers (HBPs) were ink-jet printed and fixed by a UV curing reaction to make color patterns on glass substrates. The HBPs exhibited excellent compatibility with pigments and other UV-curable compositions in inks. Surfactants were added and hyperbranched polymers were changed to adjust the rheology of the inks: this adjustment improved the ink for ink-jet printing, with regard to performance such as straight jetting trajectory, deposition accuracy, and uniform drop size. The UV-cured patterns that incorporated HBPs as ink components exhibited good chemical resistance and high nanoindentation hardness. (C) 2011 Elsevier B.V. All rights reserved.