The present invention relates to a resin particle dispersion containing core/shell-type resin particles (A), a glycol ether (B) and water, in which a core portion resin of the core/shell-type resin particles (A) contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having 2 to 18 carbon atoms in an amount of not less than 40% by mass on the basis of constitutional units constituting the core portion resin, and an acid value of the core/shell-type resin particles (A) is 50 to 100 mgKOH/g; and in which a hydrocarbon group in an ether moiety of the glycol ether (B) has 2 to 8 carbon atoms, and a content of the glycol ether (B) in the resin particle dispersion is not less than 2.8% by mass. The resin particle dispersion according to the present invention can be used as an aqueous ink that is excellent in storage stability and substrate-adhesion properties.

The present invention relates to a resin particle dispersion containing core/shell-type resin particles (A), a glycol ether (B) and water, in which a core portion resin of the core/shell-type resin particles (A) contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having 2 to 18 carbon atoms in an amount of not less than 40% by mass on the basis of constitutional units constituting the core portion resin, and an acid value of the core/shell-type resin particles (A) is 50 to 100 mgKOH/g; and in which a hydrocarbon group in an ether moiety of the glycol ether (B) has 2 to 8 carbon atoms, and a content of the glycol ether (B) in the resin particle dispersion is not less than 2.8% by mass. The resin particle dispersion according to the present invention can be used as an aqueous ink that is excellent in storage stability and substrate-adhesion properties.

A non-aqueous ink jet composition includes a pigment component containing a diketopyrrolopyrrole pigment and an organic solvent. The organic solvent contains a glycol ether. The amount of water in the non-aqueous ink jet composition is 10 mass % or less based on the total amount of the non-aqueous ink jet composition.

A non-aqueous ink jet composition includes a pigment component containing a diketopyrrolopyrrole pigment and an organic solvent. The organic solvent contains a glycol ether. The amount of water in the non-aqueous ink jet composition is 10 mass % or less based on the total amount of the non-aqueous ink jet composition.

The present invention relates to [1] a process for producing a pigment water dispersion, including step 1 of mixing a water dispersion (A) formed by dispersing a pigment (I) with a water-dispersible polymer and a water dispersion (B) of a self-dispersible pigment (II) to obtain a water dispersion (C); and step 2 of subjecting the water dispersion (C) obtained in the step 1 to heat treatment at a temperature of not lower than 40 C. to obtain the pigment water dispersion, and [2] a pigment water dispersion containing a pigment (I) dispersed with a water-dispersible polymer and a self-dispersible pigment (II), in which the water-dispersible polymer is adsorbed onto the pigment (I) and the self-dispersible pigment (II).

The present invention relates to [1] a process for producing a pigment water dispersion, including step 1 of mixing a water dispersion (A) formed by dispersing a pigment (I) with a water-dispersible polymer and a water dispersion (B) of a self-dispersible pigment (II) to obtain a water dispersion (C); and step 2 of subjecting the water dispersion (C) obtained in the step 1 to heat treatment at a temperature of not lower than 40 C. to obtain the pigment water dispersion, and [2] a pigment water dispersion containing a pigment (I) dispersed with a water-dispersible polymer and a self-dispersible pigment (II), in which the water-dispersible polymer is adsorbed onto the pigment (I) and the self-dispersible pigment (II).

Described herein are metallic pigment-containing inks having a magnitude of exotherm <1200 J/g, or no observable exotherm at all. Also described are metallic pigment-containing inks that include 9.0 wt % or less nitrocellulose resin, or which are essentially free of nitrocellulose resin. Further described are articles printed with the described metallic pigment-containing inks, kits including such inks (and other inks), and methods of printing with such inks. The metallic pigment-containing ink described herein reduce, if not eliminate, the tendency of inks containing metallic pigments to spark and combust.

Described herein are metallic pigment-containing inks having a magnitude of exotherm <1200 J/g, or no observable exotherm at all. Also described are metallic pigment-containing inks that include 9.0 wt % or less nitrocellulose resin, or which are essentially free of nitrocellulose resin. Further described are articles printed with the described metallic pigment-containing inks, kits including such inks (and other inks), and methods of printing with such inks. The metallic pigment-containing ink described herein reduce, if not eliminate, the tendency of inks containing metallic pigments to spark and combust.

The present invention relates to a suspension comprising 50-95% by weight of the total suspension (w/w) of at least one metallic material and/or ceramic material and/or polymeric material and/or solid carbon containing material; and at least 5% by weight of the total suspension of one or more fatty acids or derivatives thereof. In addition, the invention relates to uses of such suspension in 3D printing processes.

The present invention relates to a suspension comprising 50-95% by weight of the total suspension (w/w) of at least one metallic material and/or ceramic material and/or polymeric material and/or solid carbon containing material; and at least 5% by weight of the total suspension of one or more fatty acids or derivatives thereof. In addition, the invention relates to uses of such suspension in 3D printing processes.