the present invention is directed to an adhesive composition comprising a crosslinkable acrylic copolymer , a multi - functionalized crosslinkable oligomer and a photoinitiator wherein the composition exhibits excellent wet out characteristics as reflected in a tan delta value of at least 0 . 5 , preferably greater than 0 . 5 , more preferable greater than 0 . 8 as measured at 20 ° c . resulting from a first curing stage , and improved stiffness and temperature resistance as reflected in a storage elastic modulus of at least 300 , 000 pa at 20 ° c . and a shear adhesion failure temperature of at least 425 ° f . at 1 kg / in 2 , respectively , which result from a second sequential curing stage .