A novel water-borne epoxy acrylic resin (EA)with photoinitiator was synthesized by grafting maleic anhydride (MAH)and a new photoinitiator HTBP prepared by the reaction of 4-hydroxy benzophenone (4-HBP)and 2

4-toluene diisocyanate (TDI）.The structures of HTBP and graft polymers were characterized by H NMR and FTIR spectroscopy.Curing time and adhesion were evaluated according to industrial standard.The film hardness was measured by GB 6739—86 (China）.The thermal properties were characterized by TGA.Adhesion and thermal properties of the grafting system were improved compared with blending system

because of good compatibility between photoinitiaor and resin.Due to the same reason

the hardness of the film could be up to 4H.Above all

the new modified resin could avoid the photolysis fragments that might cause toxicity

which meant less environment pollution and more applications.