A light diffusing ink for printing on transparent substrates suitable for being integrated with devices for lighting said substrate from the edge, in order to print drawings, graphics, letters on said substrate and also to realize a full-field background whose thickness varies as a function of users' requirements on the surface of said substrate. The coating printed on said substrate is consequently only visible whenever said substrate is lit laterally, whereas it is not visible in the absence of a lateral light.

An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

An ink used for printing on a leather includes: a coloring material, an organic solvent, and a resin; where a maximum tensile stress of an ink film formed of the ink is 2 N/mm.sup.2 or more.

An ink used for printing on a leather includes: a coloring material, an organic solvent, and a resin; where a maximum tensile stress of an ink film formed of the ink is 2 N/mm.sup.2 or more.

Solvent-based pigmented ceramic inkjet ink compositions comprising a solvent blend consisting predominantly of one or more hydrophobic solvent(s) (preferably one or more hydrophobic long chain hydrocarbon solvent(s)) are capable of achieving superior print quality when applied over unfired glazes by the inclusion of less than 10% by weight of the composition of a water-soluble solvent, especially glycol ethers. These ink compositions are particularly suited to ceramic tile decoration via the double fast firing process, with resulting improvements in absorption, colour strength and print definition.

Solvent-based pigmented ceramic inkjet ink compositions comprising a solvent blend consisting predominantly of one or more hydrophobic solvent(s) (preferably one or more hydrophobic long chain hydrocarbon solvent(s)) are capable of achieving superior print quality when applied over unfired glazes by the inclusion of less than 10% by weight of the composition of a water-soluble solvent, especially glycol ethers. These ink compositions are particularly suited to ceramic tile decoration via the double fast firing process, with resulting improvements in absorption, colour strength and print definition.

A vat resin for three-dimensional stereolithography printing of a thiourethane polymer part comprising a liquid mixture including a first type of monomer, a second type of monomer, a photolatent base decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7, an anionic step-growth polymerization reaction inhibitor having an acidic group configured to form an acid-base pair with the non-nucleophillic base and a light absorber having an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure. Methods of preparing the vat resin and three-dimensional stereolithography printing a thiourethane polymer part using the vat resin are also disclosed.

A vat resin for three-dimensional stereolithography printing of a thiourethane polymer part comprising a liquid mixture including a first type of monomer, a second type of monomer, a photolatent base decomposable upon exposure to a light to form a non-nucleophillic base catalyst having a pKa greater than 7, an anionic step-growth polymerization reaction inhibitor having an acidic group configured to form an acid-base pair with the non-nucleophillic base and a light absorber having an absorbance in the liquid mixture that is greater than an absorbance of the photolatent base at a wavelength of the light used for the exposure. Methods of preparing the vat resin and three-dimensional stereolithography printing a thiourethane polymer part using the vat resin are also disclosed.

The present invention relates to [1] a process for producing a pigment water dispersion liquid of polymer particles containing an azomethine metal complex pigment (A), said process including the step of subjecting a mixture containing the azomethine metal complex pigment (A), an uncrosslinked aromatic group-containing polymer (b) and water to dispersion treatment using a medialess disperser at an accumulated input energy of not more than 5.0 kWh/kg, [2] a pigment water dispersion liquid containing an azomethine metal complex pigment (A) and a polymer dispersant (B), in which in an optical absorption spectrum of the pigment water dispersion liquid, a ratio of a maximum absorbance (A1.sub.max) in a wavelength range of not less than 440 nm and less than 465 nm to a maximum absorbance (A2.sub.max) in a wavelength range of not less than 420 nm and less than 440 nm [(A1.sub.max)/(A2.sub.max)] is not less than 1.000, and [3] a water-based ink for ink-jet printing, containing the aforementioned pigment water dispersion liquid.