Provided is an active energy ray-curable inkjet ink with high productivity which has the same quality level as the conventional printing and which contains an isoindoline-based pigment having a specific electric conductance, which is measured according to DIN ISO 787/14, of 150 μS/cm or less.

The present invention relates to the use of coating compositions, comprising shaped transition metal, especially silver, particles and a binder, wherein the ratio of pigment to binder is preferably such that the resulting coating shows an angle dependent color change, for the production of security elements and holograms. When the coating compositions of the present invention are used in coating a hologram the obtained products show a an angle dependent color change (flip/flop effect), different colors in reflection and transmission, an extremely bright OVD image and extremely strong rainbow effect, high purity and contrast.

The present invention relates to the use of coating compositions, comprising shaped transition metal, especially silver, particles and a binder, wherein the ratio of pigment to binder is preferably such that the resulting coating shows an angle dependent color change, for the production of security elements and holograms. When the coating compositions of the present invention are used in coating a hologram the obtained products show a an angle dependent color change (flip/flop effect), different colors in reflection and transmission, an extremely bright OVD image and extremely strong rainbow effect, high purity and contrast.

Disclosed is a radiation curable coating composition, including polymerizable, unsaturated compounds such as (meth)acrylates, vinyl compounds, or the like in a concentration range of 15-98% by weight, with an addition of 5-35% by weight, preferably 5-20% by weight, of organic UV absorber(s), wherein the UV absorber(s) has/have its/their maximum absorption coefficient in a wavelength range of <390 nm, preferably <350 nm, wherein the coating composition optionally includes other components in the amount of the balance to 100% by weight, and a method for curing such a coating composition. Also disclosed is a coating composition of this kind, wherein the organic UV absorber is radically polymerizable.

Disclosed is a radiation curable coating composition, including polymerizable, unsaturated compounds such as (meth)acrylates, vinyl compounds, or the like in a concentration range of 15-98% by weight, with an addition of 5-35% by weight, preferably 5-20% by weight, of organic UV absorber(s), wherein the UV absorber(s) has/have its/their maximum absorption coefficient in a wavelength range of <390 nm, preferably <350 nm, wherein the coating composition optionally includes other components in the amount of the balance to 100% by weight, and a method for curing such a coating composition. Also disclosed is a coating composition of this kind, wherein the organic UV absorber is radically polymerizable.

The present invention relates to a radiation curable ink composition comprising a gellant. The present invention further relates to an ink set comprising such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.

The present invention relates to a radiation curable ink composition comprising a gellant. The present invention further relates to an ink set comprising such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.

A non-Newtonian photo-curable ink composition that comprises a structured network forming agent in an amount ranging from about 0.1 wt % to about 20 wt % by total weight of the ink composition; a salt in an amount ranging from about 0.05 wt % to about 20 wt % by total weight of the ink composition; an organic solvent; a photo-initiator; and a polymerizable material; wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian photo-curable ink composition.

A non-Newtonian photo-curable ink composition that comprises a structured network forming agent in an amount ranging from about 0.1 wt % to about 20 wt % by total weight of the ink composition; a salt in an amount ranging from about 0.05 wt % to about 20 wt % by total weight of the ink composition; an organic solvent; a photo-initiator; and a polymerizable material; wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian photo-curable ink composition.

A non-Newtonian photo-curable ink composition that includes a metal oxide/alkoxysilane complex in an amount ranging from about 0.1 wt % to about 10 wt %, a salt in an amount ranging from about 0.05 wt % to about 20 wt %, a photo-initiator, an organic solvent, and water, wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first sate and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian pho to-curable ink composition.