Herein is described a method of providing a printed label. The method comprises applying a radiation curable overcoat composition to a liquid electrostatically printed ink disposed on a label substrate; wherein the radiation curable overcoat composition comprises radiation curable monomers and/or oligomers; a photoinitiator; a polyalkylsiloxane containing at least two reactive functional groups, wherein the reactive functional groups are selected from hydrogen, hydroxyl, amino and a double bond; and a cross-linker containing at least two epoxide groups. Printed labels and a radiation curable overcoat composition are also described herein.

Herein is described a method of providing a printed label. The method comprises applying a radiation curable overcoat composition to a liquid electrostatically printed ink disposed on a label substrate; wherein the radiation curable overcoat composition comprises radiation curable monomers and/or oligomers; a photoinitiator; a polyalkylsiloxane containing at least two reactive functional groups, wherein the reactive functional groups are selected from hydrogen, hydroxyl, amino and a double bond; and a cross-linker containing at least two epoxide groups. Printed labels and a radiation curable overcoat composition are also described herein.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and systems for three-dimensional printing. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and metal oxide nanoparticles dispersed therein. The metal oxide nanoparticles can be selected from titanium dioxide, zinc oxide, cerium oxide, indium tin oxide, or a combination thereof. The metal oxide nanoparticles can have an average particle size from about 2 nm to about 500 nm. The detailing agent can include a detailing compound.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and systems for three-dimensional printing. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and metal oxide nanoparticles dispersed therein. The metal oxide nanoparticles can be selected from titanium dioxide, zinc oxide, cerium oxide, indium tin oxide, or a combination thereof. The metal oxide nanoparticles can have an average particle size from about 2 nm to about 500 nm. The detailing agent can include a detailing compound.

A multi-functional polyurethane coating composition can include water and polyurethane particles including a blend of polyurethane polymers with polyurethane backbones. The polyurethane particles can include multiple pendant groups independently attached to one or multiple polyurethane backbones within the blend of polyurethane polymers. The multiple pendant groups of the polyurethane particles include polyalkylene oxides, aliphatic phosphonium salts, and epoxides.

Examples of the present disclosure are directed toward an ink composition including a surfactant. An example ink composition consistent with the present disclosure includes a dye colorant dispersion, a solvent, a chelating agent, an oleth-3-phosphate, and a surfactant including a modified fatty alcohol polyglycol ether. In various examples, the dye colorant dispersion is present in an amount ranging from about 1.0 wt % to about 7.0 wt % based on a total weight of the ink, and the solvent is present in an amount ranging from about 10 wt % to about 22 wt % based on the total weight of the ink. The chelating agent may be present in an amount ranging from about 0.05 wt % to about 0.2 wt % based on the total weight of the ink, and the oleth-3-phosphate is in an amount ranging from about 0.1 wt % to about 0.3 wt % based on the total weight of the ink.

Examples of the present disclosure are directed toward an ink composition including a surfactant. An example ink composition consistent with the present disclosure includes a dye colorant dispersion, a solvent, a chelating agent, an oleth-3-phosphate, and a surfactant including a modified fatty alcohol polyglycol ether. In various examples, the dye colorant dispersion is present in an amount ranging from about 1.0 wt % to about 7.0 wt % based on a total weight of the ink, and the solvent is present in an amount ranging from about 10 wt % to about 22 wt % based on the total weight of the ink. The chelating agent may be present in an amount ranging from about 0.05 wt % to about 0.2 wt % based on the total weight of the ink, and the oleth-3-phosphate is in an amount ranging from about 0.1 wt % to about 0.3 wt % based on the total weight of the ink.

The radiation curable compositions (I) that comprise from 10 to 80 by weight of at least one silicone-modified urethane (meth) acrylate (A), from 0.5 to 60 by weight of at least one (meth) acrylated compound (B) bearing at least 5 (meth) acryloyl groups per molecule, and optionally, from 10 to 60% by weight of at least one compound (C) different from (A) or (B), wherein the weight percentages are on the total weight of the composition (I). These materials can be used for producing coatings, inks and overprint varnishes with excellent anti-stain properties, to their use and preparation. Materials of the invention are compatible with standard radiation curable materials. They allow to obtain excellent anti-stain properties for high gloss coatings as well as for matte coatings (II) with a gloss level at 60° of at most 15, even at most 10.

The radiation curable compositions (I) that comprise from 10 to 80 by weight of at least one silicone-modified urethane (meth) acrylate (A), from 0.5 to 60 by weight of at least one (meth) acrylated compound (B) bearing at least 5 (meth) acryloyl groups per molecule, and optionally, from 10 to 60% by weight of at least one compound (C) different from (A) or (B), wherein the weight percentages are on the total weight of the composition (I). These materials can be used for producing coatings, inks and overprint varnishes with excellent anti-stain properties, to their use and preparation. Materials of the invention are compatible with standard radiation curable materials. They allow to obtain excellent anti-stain properties for high gloss coatings as well as for matte coatings (II) with a gloss level at 60° of at most 15, even at most 10.

An ink composition includes resin particles, one or more surfactants, one or more water-soluble organic solvents, and a glycol ether, where: the surfactants include a fluorosurfactant having a predetermined structure and an HLB value determined by Griffin's method of 11 or less; the water-soluble organic solvents include one or more selected from the group consisting of glycerin, ethylene glycol, diethylene glycol, polyethylene glycol having a weight-average molecular weight of 10,000 or less, 1,3-propanediol, 1,4-butanediol, and diglycerol; and the glycol ether has a predetermined structure and an HLB value determined by Griffin's method of 11 or less.