An aqueous UV curable inkjet ink includes an aqueous medium, and capsules composed of a polymeric shell surrounding a core containing one or more polymerizable compounds having an alkyne group or an ethylenically unsaturated group, wherein the aqueous UV curable inkjet ink contains one or more photoinitiators and one or more thiol compounds having at least two thiol groups.

An aqueous UV curable inkjet ink includes an aqueous medium, and capsules composed of a polymeric shell surrounding a core containing one or more polymerizable compounds having an alkyne group or an ethylenically unsaturated group, wherein the aqueous UV curable inkjet ink contains one or more photoinitiators and one or more thiol compounds having at least two thiol groups.

The present invention relates to security elements, comprising (a) a substrate, (b) on at least part of the substrate surface a metal layer, (c) optionally on at least part of the metal layer a dielectric layer, (d) on at least part of the metal layer, or the dielectric layer, a layer obtained by overcoating the metal layer, or the dielectric layer with a composition, comprising (i) silver nanoparticles, (ii) a solvent, (iii) (surface) stabilizing agent(s) and (iv) optionally a binder, and (e) a protective layer on top of layer (d). The maximum absorption wavelength of the silver nanoparticles in layer (d) is controlled by the amount of (surface) stabilizing agent(s) and optionally binder relative to the amount of silver nanoparticles to be preferably in the range of 700 to 1600 nm.

A manufacturing method of decorated natural leather including the steps of: a) laser ablating part of a base coat on dyed crusted leather; and b) bleaching the laser ablated part with a bleaching agent.

A device for indicating exposure to a pressure. The device may include a base layer, a plurality of microcapsules, and a coating, with the microcapsules being disposed between the base layer and the coating. The microcapsules contain a indicator material that can be released once the microcapsules burst. The microcapsules then have a compressive bursting strength that is chosen or designed to be less than a selected pressure (e.g., the pressure being that to which a particular article may be exposed during high pressure processing). Thus, when the device is subjected to a pressure greater than the compressive bursting strength, at least some microcapsules burst, the indicator material is released from the microcapsules, and the release of the indicator material can be detected by observation of the device. The device may be a label that is associated (such as by being affixed) to the article being subjected to pressure (or multiple labels being associated (such as by being affixed) to multiple articles. Alternatively, the device may be associated with an article or articles without being affixed thereto.

A device for indicating exposure to a pressure. The device may include a base layer, a plurality of microcapsules, and a coating, with the microcapsules being disposed between the base layer and the coating. The microcapsules contain a indicator material that can be released once the microcapsules burst. The microcapsules then have a compressive bursting strength that is chosen or designed to be less than a selected pressure (e.g., the pressure being that to which a particular article may be exposed during high pressure processing). Thus, when the device is subjected to a pressure greater than the compressive bursting strength, at least some microcapsules burst, the indicator material is released from the microcapsules, and the release of the indicator material can be detected by observation of the device. The device may be a label that is associated (such as by being affixed) to the article being subjected to pressure (or multiple labels being associated (such as by being affixed) to multiple articles. Alternatively, the device may be associated with an article or articles without being affixed thereto.

Formulations usable in additive manufacturing of a three-dimensional object, which comprise a reinforcing material such as silica particles in an amount of from 10 to 30%, or from 15 to 20%, by weight, of the total weight of the formulation, and a designed combination of curable materials as described in the specification, is provided. Additive manufacturing of three-dimensional objects made of such a formulation and featuring enhanced mechanical properties, and objects obtained thereby are also provided.

The present invention relates to a novel serie of α-disilyloxyketones, which are useful as photoinitiators (PIs), and to compositions comprising said photoinitiators.

The present invention relates to a novel serie of α-disilyloxyketones, which are useful as photoinitiators (PIs), and to compositions comprising said photoinitiators.

A method of forming an image on a substrate that includes applying a radiation curable analog ink composition by an analog printing method onto a surface of the substrate to form a coated substrate, applying a radiation curable inkjet ink composition by a digital printing method onto the coated substrate while the radiation curable analog ink composition is still wet to form a hybrid coated substrate, and exposing to electron beam radiation. A method of forming an image on a substrate that includes applying a radiation curable inkjet ink composition by a digital printing method onto a surface of the substrate to form a coated substrate, applying a radiation curable analog ink composition by an analog printing method onto the coated substrate while the radiation curable inkjet ink composition is still wet to form a hybrid coated substrate, and exposing to electron beam radiation.