A waterborne UV-curable polyurethane acrylic resin has been synthesized from polypropylene glycol,toluene diisocyanate,dimethylol propionic acid and hydroxyethyl acrylate,and then modified with a hyperbranched polyester.The influence of the modification on the hydrophilic properties and photosensitive properties of the resin was investigated,and the overall performances of the resin before and after modification were compared.The results showed that the hydrophilic properties of the resin were proportional ...