Abstract: A radiation curable inkjet ink set includes at least a cyan radiation curable inkjet ink, a magenta radiation curable inkjet ink, a yellow radiation curable inkjet ink, and a black radiation curable inkjet ink, each having a viscosity of no more than 50 mPa·s at 25° C. and a shear rate of 90 s-1 and containing: a) at least one non-polymerizable, non-polymeric bisacylphosphine oxide present in a concentration of no more than 4.

Abstract: A method for manufacturing decorative surfaces includes the steps of inkjet printing a colour pattern with one or more aqueous inkjet inks including a polyurethane based latex binder; impregnating a paper substrate with a thermosetting resin; and heat pressing the thermosetting resin impregnated paper substrate carrying the inkjet printed colour pattern into a decorative surface.

Abstract: A free radical curable liquid having a specific weight after curing measured at 25° C. of less than 1.00 g/cm3 including: a) one or more photoinitiators; b) one or more free radical polymerizable monomers or oligomers; and c) hollow particles and/or a free radical crosslinkable polymer selected from the group consisting of polyethylene, polypropylene, polybutadiene, polymethylpentene, poly(ethylene-vinylacetate), poly(ethylene-ethyl acrylate) and poly(styrene-butadiene) and copolymers thereof; wherein at least the free radical crosslinkable polymer or at least one of the one or more free radical polymerizable monomers or oligomers includes one or more hydrolyzable groups which upon hydrolyzation form an acid group or salt thereof; and wherein the free radical curable liquid contains no more than 10 wt % of organic solvent.

Abstract: A free radical radiation curable inkjet ink having a viscosity smaller than 30 mPa·s at 40° C. and at a shear rate of 1,000 s?1 includes a polymeric or polymerizable photoinitiator; a thiol compound; and a vitrification control monomer. The vitrification control monomer includes a (meth)acrylate group and an ethylenically unsaturated functional group selected from the group consisting of a vinyl ether group, an allyl ether group, and an allyl ester group, and the thiol compound includes no more than six thiol groups.

Abstract: An inkjet printing method includes, in order, the steps of a) jetting a radiation curable inkjet ink on the outside surface of a packaging including a substance for human or animal consumption or administration; b) curing the radiation curable inkjet ink on the outer surface of the packaging; and c) treating the radiation curable inkjet ink and the packaging including the substance with a heat treatment to kill micro-organisms present on the inside surface of a packaging; wherein the radiation curable inkjet ink includes at least 5 wt % of a (meth)acrylated silicone surfactant based on the total weight of the radiation curable inkjet ink.

Abstract: A radiation curable liquid includes at least one free radical polymerizable monomer or oligomer, at least one diffusion hindered acetalysation catalyst, and at least one diffusion hindered hydroxyl containing compound. The radiation curable liquid applied to a substrate prevents migration of very low viscous monomers, such as vinyl ether acrylate monomers, into the substrate.