Abstract: Photoinitiator mixture comprising at least one alpha-amino ketone compound; and at least one compound of the Formula (I) or (I?) wherein R1 and R?1 for example are hydrogen, C3-C8cycloalkyl or C1-C12alkyl R2 and R2? for example are hydrogen; unsubstituted C1-C20alkyl or substituted C1-C20alkyl; and R8 and R9 for example are hydrogen, C1-C12alkyl which optionally is substituted, or phenyl which optionally is substituted; exhibit an unexpectedly good performance in photopolymerization reactions.

Abstract: Photoinitiators mixture comprising (i) at least one compound selected from the group consisting of alpha-hydroxy ketones, monoacylphosphine oxides, bisacylphosphine oxides, ketosulfones, benzil ketals, benzoin ether, phenylglyoxylates, borates and titanocenes; and (ii) at least one compound of the formula (I) or (I?) R1, R?1, R2 and R2? R?9 independently of each other for example are hydrogen or C1-C12alkyl R7, R8, R9, R?8 and R?9 independently of each other for example are hydrogen, C1-C12alkyl which optionally is substituted or phenyl which optionally is substituted, exhibit excellent photoinitiating properties.

Abstract: The present application provides a uv dose indicator film and ink showing a color change depending on the absorbed radiation-dose, comprising (a) a selected acid responsive colorant; (b) a sulfonyloxime ester compound or a —N—O-sulfonyl compound as photolatent acid and (c) a UV-absorber.

Abstract: Photoinitiators mixture comprising (i) at least one compound selected from the group consisting of alpha-hydroxy ketones, monoacylphosphine oxides, bisacylphosphine oxides, ketosulfones, benzil ketals, benzoin ether, phenylglyoxylates, borates and titanocenes; and (ii) at least one compound of the formula (I) or (I?) R1, R?1, R2 and R2? R?9 independently of each other for example are hydrogen or C1-C12alkyl R7, R8, R9, R?8 and R?9 independently of each other for example are hydrogen, C1-C12alkyl which optionally is substituted or phenyl which optionally is substituted, exhibit excellent photoinitiating properties.

Abstract: Photoinitiator mixture comprising at least one alpha-amino ketone compound; and at least one compound of the Formula (I) or (I?) wherein R1 and R?1 for example are hydrogen, C3-C8cycloalkyl or C1-C12alkyl R2 and R2? for example are hydrogen; unsubstituted C1-C20alkyl or substituted C1-C20alkyI; and R8 and R9 for example are are hydrogen, C1-C12alkyl which optionally is substituted, or phenyl which optionally is substituted; exhibit an unexpectedly good performance in photopolymerization reactions.

Abstract: The present invention relates to a method for producing a duplicated shim and the duplicated shim obtainable by the method. The duplicated (UV-cured) shim, independent of any carrying device (like a cylinder or belt), can be applied directly to the surface of the transfer roller (and impart the surface OVD structure into a clear lacquer) in a similar way to conventional nickel shims.

Abstract: The present invention relates to a method of printing, an apparatus for printing and to products obtained therefrom. In particular, the present invention relates to optically variable images, or devices applied to a substrate, such as a hologram, kinegram and the like. More particularly, the present invention concerns sub-microscopic, holographic, electron beam, mechanically ruled or other diffraction or straight line gratings.

Abstract: Printed images with excellent image quality, adhesion and durability are prepared by applying an ink to a printable surface which contains one or more components containing reactive groups followed by exposing the surface with the applied ink to ultra-violet light, high intensity visible light, or electron beam radiation. The surfaces of typically non-adherent substrates, such as polyolefins and PET are rendered adherent using this method without plasma, corona or flame treatment. The reactive groups include ethylenically unsaturated groups such as vinyl, vinyl ether, allyl, methacrylate, acrylate etc, epoxides, hydroxyl, amines, acidic groups, basic groups and free radical generating groups. The images exhibit good resolution, edge acuity and permanence.

Abstract: A process for preparing an inkjet printed matter, which comprises the steps of applying an ultraviolet curable inkjet ink composition comprising a photopolymerizable monomer, oligomer or prepolymer; a colorant and a compound of the formula (I) or (II) or (Ia) or (IIa) or mixtures thereof, and optionally a reactive diluent to a recording medium and curing the ink composition on the recording medium by irradiating with ultraviolet ray.