RADIATION CURABLE COMPOSITIONS FOR FOOD PACKAGING

摘要

A radiation curable inkjet ink set containing a plurality of inkjet inks having a viscosity of no more than 50 mPa.s at 25°C and a shear rate of 90 s-1 containing: a) at least one non-polymerizable, non-polymeric bisacylphosphine oxide present in a concentration of no more than 4.0 wt% based on the total weight of radiation curable inkjet ink; b) at least one monomer comprising at least one vinyl ether group and at least one polymerizable group selected from the group consisting of an acrylate group and a methacrylate group; and c) at least one polymerizable or polymeric thioxanthone, with the proviso that if the at least one polymerizable or polymeric thioxanthone contains no tertiary amine group that the radiation curable inkjet ink further includes at least one tertiary amine co-initiator selected from the group consisting of ethylhexyl-4-dimethylaminobenzoate and a polymerizable co-initiator containing a tertiary amine.