| abstract |
A security film including a support ( 1 ) and a laser markable layer ( 3 ), wherein the laser markable layer includes i) a laser additive; ii) a polymer selected from the group consisting of polystyrene, polycarbonate and styrene acrylonitrile; iii) an initiator; and iv) at least 15 wt % of radiation curable compound based on the total dry weight of the laser markable layer, wherein the radiation curable compound has a viscosity of less than 100 mPa·s at 25° C. and at a shear rate of 100 s −1 . A security document and a method for preparing the security film are also disclosed. |