An inkjet overcoat composition includes an aqueous vehicle. The inkjet overcoat composition also includes modified silica nanoparticles dispersed in the aqueous vehicle and a sugar alcohol dissolved or dispersed in the aqueous vehicle. Each modified silica nanoparticle includes a silica core and a hydrotropic silane coupling agent attached to the silica core.

Here is described a liquid electrostatic ink composition comprising a pigment; a carrier liquid; a resin; a charge director; a fatty acid amide, and a polyalkylene wax. Methods of forming the liquid electrostatic ink compositions, and plastic substrates with the liquid electrostatic ink composition printed thereon, are also disclosed.

Here is described a liquid electrostatic ink composition comprising a pigment; a carrier liquid; a resin; a charge director; a fatty acid amide, and a polyalkylene wax. Methods of forming the liquid electrostatic ink compositions, and plastic substrates with the liquid electrostatic ink composition printed thereon, are also disclosed.

The invention relates to printable ion-conductive and viscosity-tunable inks based on two-dimensional (2D) insulators, forming methods and applications of the inks. The 2D insulating material based printable ink includes at least one solvent; and an exfoliated composition dispersed in the at least one solvent. The exfoliated composition includes a 2D insulating material and a dispersant and stabilizing agent. The printed structures of the 2D insulating material based printable ink possess high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are an ideal set of characteristics for printable battery components such as separators and solid electrolytes.

The invention relates to printable ion-conductive and viscosity-tunable inks based on two-dimensional (2D) insulators, forming methods and applications of the inks. The 2D insulating material based printable ink includes at least one solvent; and an exfoliated composition dispersed in the at least one solvent. The exfoliated composition includes a 2D insulating material and a dispersant and stabilizing agent. The printed structures of the 2D insulating material based printable ink possess high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are an ideal set of characteristics for printable battery components such as separators and solid electrolytes.

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.

The present invention provides an interference pigment that develops interference colors even on light-colored bases. An interference pigment 1 of the present invention includes: a flaky inorganic substrate 10; a transparent metal layer 20 that coats the inorganic substrate 10; and a metal oxide layer 30 that coats the metal layer 20.

The present invention provides an interference pigment that develops interference colors even on light-colored bases. An interference pigment 1 of the present invention includes: a flaky inorganic substrate 10; a transparent metal layer 20 that coats the inorganic substrate 10; and a metal oxide layer 30 that coats the metal layer 20.

The present invention relates to a process for producing a dispersion of white fine particles from which a white ink that is capable of exhibiting excellent hiding power, rub fastness and water resistance even when printed on a low-water absorbing printing medium can be obtained by incorporating the dispersion of the white fine particles into the ink, and a water-based ink for ink-jet printing which contains the white fine particles. The present invention provides [1] a process for producing a dispersion of white fine particles, including step 1 of mixing titanium oxide and a polymer dispersant at a pH value that is not less than an acid dissociation exponent (pKa) of at least a part of an acid component of the polymer dispersant to thereby obtain a titanium oxide dispersion, in which an isoelectric point (A) of the titanium oxide and the acid dissociation exponent (pKa) (B) of the polymer dispersant satisfy a relationship represented by the formula: A−B≥0, the polymer dispersant contains a constitutional unit derived from a hydrophobic monomer, and a volume median particle size (D.sub.50) of particles in the titanium oxide dispersion is from 150 to 500 nm; and step 2 of adding a polymerizable monomer to the titanium oxide dispersion obtained in the step 1 to subject the polymerizable monomer to polymerization reaction, thereby obtaining the dispersion of the white fine particles, and [2] a water-based ink for ink-jet printing which contains the white fine particles obtained above.

Provided are an ink for a PTP package, which is a counterfeit prevention ink for use in a PTP package, has excellent invisibility, can be efficiently read by a scanner having sensitivity in a near infrared region, is highly durable, and can be used for a material of a PTP package, particularly an aluminum substrate; and an ink composition for use therefor. An ink composition for a PTP package, containing vanadyl naphthalocyanine represented by Formula (I): ##STR00001## and a resin. The resin is preferably at least one selected from a cellulose-based resin, a vinyl-based resin, a polyamide-based resin, a polyimide-based resin, an epoxy-based resin, a polyurethane-based resin, a polyester-based resin, a polyester urethane-based resin, a polystyrene-based resin, a polyolefin-based resin, a polyacrylic resin, and a polycarbonate-based resin.