A composition for extrusion and deposition by a three-dimensional (3D) printer is provided. The composition comprises a thermoplastic elastomer (TPE), particulate matter having particles in the range of about 5 nm to about 10 μm in diameter, and a solvent. Uses of the composition for 3D printing microstructures, including multiwall plate devices, are also provided.

An object of the present disclosure is to provide a conductive ink that is excellent in applicability and dispersibility of metal nanoparticles, and forms, through sintering, a sintered body which is excellent in substrate steady contact and conductivity. The conductive ink according to an embodiment of the present disclosure contains components (A), (B), and (C) below, wherein a content of the component (C) is from 0.1 to 5.0 parts by weight relative to 100 parts by weight of the component (A), and a viscosity at 25° C. is 100 mPa.Math.s or less: Component (A): surface-modified metal nanoparticles having a configuration in which surfaces of metal nanoparticles are coated with an organic protective agent; Component (B): a dispersion medium containing an alcohol (b-1) and a hydrocarbon (b-2); and Component (C): a polyvinyl acetal resin.

An object of the present disclosure is to provide a conductive ink that is excellent in applicability and dispersibility of metal nanoparticles, and forms, through sintering, a sintered body which is excellent in substrate steady contact and conductivity. The conductive ink according to an embodiment of the present disclosure contains components (A), (B), and (C) below, wherein a content of the component (C) is from 0.1 to 5.0 parts by weight relative to 100 parts by weight of the component (A), and a viscosity at 25° C. is 100 mPa.Math.s or less: Component (A): surface-modified metal nanoparticles having a configuration in which surfaces of metal nanoparticles are coated with an organic protective agent; Component (B): a dispersion medium containing an alcohol (b-1) and a hydrocarbon (b-2); and Component (C): a polyvinyl acetal resin.

A pigment dispersion is disclosed incorporating a pigment selected from the group consisting of TiO.sub.2 (CI 77891), Blue 15 (CI 74160), Carbon black (CI 77266), Orange 64 (CI 12760), Red 202 (CI 73907), Red 254 (CI 56110), Yellow 151 (CI 13980), Yellow 180 (CI 21290), Blue 16 (CI 74100), Blue 60 (CI 69800), Green 36 (CI 74265), Green 7 (CI 74260), and any combination thereof, a solvent, for example, Hamamelis virginiana Extract, and at least one additive, for example, alkyl glycosides, and having low impurity content. Also disclosed is a tattoo ink including the pigment dispersion and methods of making the pigment dispersion.

A pigment dispersion is disclosed incorporating a pigment selected from the group consisting of TiO.sub.2 (CI 77891), Blue 15 (CI 74160), Carbon black (CI 77266), Orange 64 (CI 12760), Red 202 (CI 73907), Red 254 (CI 56110), Yellow 151 (CI 13980), Yellow 180 (CI 21290), Blue 16 (CI 74100), Blue 60 (CI 69800), Green 36 (CI 74265), Green 7 (CI 74260), and any combination thereof, a solvent, for example, Hamamelis virginiana Extract, and at least one additive, for example, alkyl glycosides, and having low impurity content. Also disclosed is a tattoo ink including the pigment dispersion and methods of making the pigment dispersion.

An ink composition can include a dye and an ink vehicle. The ink vehicle can include water, from 1.5 wt % to 8 wt % of a C4-C6 1,2-alkanediol, and from 12 wt % to 25 wt % of a secondary co-solvent package including multiple co-solvents selected from 2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, 2-methyl-1,3-propanediol, triethylene glycol, 1,5-pentandiol, 1,6-hexanediol, glycerol, or 5-dimethylhydantoin. The ink composition also includes a surfactant package including from 0.6 wt % to 1.6 wt % of the surfactant package, which includes both a nonionic surfactant and an anionic surfactant at a weight ratio from 4:1 to 1.5:1, for example.

An ink composition can include a dye and an ink vehicle. The ink vehicle can include water, from 1.5 wt % to 8 wt % of a C4-C6 1,2-alkanediol, and from 12 wt % to 25 wt % of a secondary co-solvent package including multiple co-solvents selected from 2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, 2-methyl-1,3-propanediol, triethylene glycol, 1,5-pentandiol, 1,6-hexanediol, glycerol, or 5-dimethylhydantoin. The ink composition also includes a surfactant package including from 0.6 wt % to 1.6 wt % of the surfactant package, which includes both a nonionic surfactant and an anionic surfactant at a weight ratio from 4:1 to 1.5:1, for example.

A white ink composition can include an aqueous ink vehicle including water and organic co-solvent, from 5 wt % to 30 wt % white metal oxide pigment, from 0.05 wt % to 1 wt % block copolymer dispersant adsorbed on a surface of the white metal oxide, and from 2 wt % to 30 wt % polyurethane binder. The block copolymer dispersant can have a weight average molecular weight from 5,000 Mw to 20,000 Mw and an acid number from 0 mg KOH/g to 40 mg KOH/g based on dry weight of the block copolymer dispersant.

A white ink composition can include an aqueous ink vehicle including water and organic co-solvent, from 5 wt % to 30 wt % white metal oxide pigment, from 0.05 wt % to 1 wt % block copolymer dispersant adsorbed on a surface of the white metal oxide, and from 2 wt % to 30 wt % polyurethane binder. The block copolymer dispersant can have a weight average molecular weight from 5,000 Mw to 20,000 Mw and an acid number from 0 mg KOH/g to 40 mg KOH/g based on dry weight of the block copolymer dispersant.

Discloses is a water-soluble color coating paint for coating a rubber foam thermal insulation material and a method for manufacturing the same, and specifically, a color coating paint and an insulation color coating paint which have excellent adhesion to a porous rubber foam thermal insulation material, and retain elasticity of the thermal insulation material, as well as very improved photocatalytic performance, and a method for manufacturing the same. The color coating paint may be applied to a surface regardless of the material or condition of the surface to be painted, and may be coated to a soft or porous surface due to elasticity provided therein. The coating film produced by the color coating paint blocks 95% or more of the emission of volatile organic compounds from the surface of the foam rubber thermal insulation material into the atmosphere.