Patent ID: 7264873
Filing Date: 2007-09-04
Classification: C08G,C09J,Y10T

Abstract:
1. A surface protecting film for polycarbonate, wherein a film substrate having Young's modulus of 1 GPa or more and a pressure sensitive adhesive layer are comprised, the glass transition temperature (Tg) of the pressure sensitive adhesive composing of the adhesive layer being between 40 to 90° C. and the initial 180° peel adhesive strength (F (co) ) to polycarbonate being between 10 to 300 mN/25 mm, and the shear storage modulus of the pressure sensitive adhesive at any temperature of 20 to 40° C. being set to a value within a range of 5×10 8 to 5×10 10 dyn/cm 2 , wherein the pressure sensitive adhesive comprises a three-dimensional cross-linked material comprising component (A) and component (B), wherein: component (A) comprises 30 to 80 wt % (meth)acrylate copolymer, and component (B) comprises 20-70 wt % based on the total weight of components (A) and (B), of at least one curable agent selected from an energy ray curable agent and a thermosetting agent.