The present invention relates to aqueous polymer-silicon oil hybrid compositions in the form of aqueous dispersions of finely divided polymer-silicon oil hybrid particles which comprise at least one water-insoluble polymer P made of ethylenically unsaturated monomers M, at least one surface-active substance and at least non-polymerizable, non-polar silicon oil. The present invention relates in particular to the use of these compositions as additives in aqueous coating and printing ink compositions.

The present invention relates to aqueous polymer-silicon oil hybrid compositions in the form of aqueous dispersions of finely divided polymer-silicon oil hybrid particles which comprise at least one water-insoluble polymer P made of ethylenically unsaturated monomers M, at least one surface-active substance and at least non-polymerizable, non-polar silicon oil. The present invention relates in particular to the use of these compositions as additives in aqueous coating and printing ink compositions.

To provide an ink, which contains: water; a pigment; and a first water-soluble organic solvent, wherein the first water-soluble organic solvent contains a water-soluble organic solvent (G) having a boiling point of 280° C. to 300° C., a water-soluble organic solvent (X) having a boiling point of 180° C. to 190° C., and a water-soluble organic solvent (Y) having a boiling point of 190° C. to 200° C., wherein the first water-soluble organic solvent contains a water-soluble organic solvent (G) having a boiling point of 280° C. to 300° C., a water-soluble organic solvent (X) having a boiling point of 180° C. to 190° C., and a water-soluble organic solvent (Y) having a boiling point of 190° C. to 200° C., wherein the ink satisfies the following formulae: 24≦X≦40 2≦X/Y≦20 where X [% by mass] is an amount of the water-soluble organic solvent (X), and Y [% by mass] is an amount of the water-soluble organic solvent (Y).

To provide an ink, which contains: water; a pigment; and a first water-soluble organic solvent, wherein the first water-soluble organic solvent contains a water-soluble organic solvent (G) having a boiling point of 280° C. to 300° C., a water-soluble organic solvent (X) having a boiling point of 180° C. to 190° C., and a water-soluble organic solvent (Y) having a boiling point of 190° C. to 200° C., wherein the first water-soluble organic solvent contains a water-soluble organic solvent (G) having a boiling point of 280° C. to 300° C., a water-soluble organic solvent (X) having a boiling point of 180° C. to 190° C., and a water-soluble organic solvent (Y) having a boiling point of 190° C. to 200° C., wherein the ink satisfies the following formulae: 24≦X≦40 2≦X/Y≦20 where X [% by mass] is an amount of the water-soluble organic solvent (X), and Y [% by mass] is an amount of the water-soluble organic solvent (Y).

A non-Newtonian photo-curable ink composition that comprises a combination of metal oxide particles in an amount ranging from about 0.1 wt % to about 20 wt % based on the total weight of the ink; 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 combination of metal oxide particles in an amount ranging from about 0.1 wt % to about 20 wt % based on the total weight of the ink; 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.

The present disclosure is drawn to coalescent inks and material sets for 3D printing. The coalescent ink can include a water-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also contain water.

Provided in one example herein is an aqueous ink composition, comprising: pigment particles comprising at least one metal oxide; an aqueous medium; and a cationic double-chain surfactant comprising a quaternary ammonium salt. Methods of making and using the ink composition are also provided.

Provided in one example herein is an aqueous ink composition, comprising: pigment particles comprising at least one metal oxide; an aqueous medium; and a cationic double-chain surfactant comprising a quaternary ammonium salt. Methods of making and using the ink composition are also provided.

The present disclosure provides non-Newtonian inkjet inks and related methods. In one example, a non-Newtonian inkjet ink can comprise silica, alumina, and organic solvent. The non-Newtonian inkjet ink can be an aqueous ink having a pH from 9 to 12 and a conductivity from 100 to 2000 μS/cm.