Provided herein are compositions comprising substrates that contain polymeric materials or non-magnetic, paramagnetic, or diamagnetic metal objects, and films or inks that contain ferromagnetic materials in which the films or the ferromagnetic materials are transparent. Also provided herein are methods of fabricating the substrates. Further provided herein are ferromagnetic material films containing transparent or translucent films that comprises ferromagnetic materials. The coating imparts functionality to the film such that the film is capable of being mechanically separated from the polymeric materials or non-magnetic, paramagnetic, or diamagnetic metal objects using a commercial magnetic separator. The transparent, food-safe ink composition, which can be printed using high-speed flexographic, gravure, intaglio, offset printing or pad printing consists of an ingestible magnetically susceptible pigment capable of rendering the printed template with magnetically active properties.

The present invention relates to a water-based ink containing at least pigment-containing water-insoluble crosslinked polymer particles (A), a polymer emulsion (B) and water, in which a water-insoluble crosslinked polymer constituting the crosslinked polymer particles (A) is obtained by subjecting a polymer that contains a constitutional unit derived from a carboxylic acid monomer having an acid value of not less than 200 mgKOH/g and a constitutional unit derived from a hydrophobic monomer, to crosslinking reaction with an epoxy compound, and a polymer constituting the polymer emulsion (B) contains a constitutional unit derived from a carboxylic acid monomer and a constitutional unit derived from a hydrophobic monomer. The water-based ink of the present invention is excellent in ejection stability and fastness of the printed characters or images while maintaining good optical density.

A stretchable and/or flexible conductive ink has conductive particles admixed with a binder comprising a neoprene. The mass of the conductive particles in the ink is in a range of 6.0 to 10.4 times greater than the mass of the neoprene in the ink. When deposited on a substrate, the ink provides suitably stretchable and flexible conductive elements. The conductive elements may be stretchable, flexible electronic and/or thermal devices.

A stretchable and/or flexible conductive ink has conductive particles admixed with a binder comprising a neoprene. The mass of the conductive particles in the ink is in a range of 6.0 to 10.4 times greater than the mass of the neoprene in the ink. When deposited on a substrate, the ink provides suitably stretchable and flexible conductive elements. The conductive elements may be stretchable, flexible electronic and/or thermal devices.

Disclosed herein are polymers, which can be incorporated in pigment dispersions and inkjet ink compositions, comprising first monomers selected from ethylenically unsaturated hydrophobic monomers, and second monomers selected from maleic anhydride, maleic acid, and salts, esters, imides, and amides thereof. The polymers can have a portion of the second monomers functionalized with at least one organic group having a calcium index value greater than or equal to a calcium index value of phenylphosphonic acid. Additionally and/or alternatively, the at least one polymer can be crosslinked via the second monomers. Dispersions and inkjet ink compositions comprising such polymers can also further comprise at least one pigment and a liquid vehicle. Also disclosed are methods of making such polymers.

Disclosed herein are polymers, which can be incorporated in pigment dispersions and inkjet ink compositions, comprising first monomers selected from ethylenically unsaturated hydrophobic monomers, and second monomers selected from maleic anhydride, maleic acid, and salts, esters, imides, and amides thereof. The polymers can have a portion of the second monomers functionalized with at least one organic group having a calcium index value greater than or equal to a calcium index value of phenylphosphonic acid. Additionally and/or alternatively, the at least one polymer can be crosslinked via the second monomers. Dispersions and inkjet ink compositions comprising such polymers can also further comprise at least one pigment and a liquid vehicle. Also disclosed are methods of making such polymers.

A metallic nanoparticle composition dispenser includes a piston-cylinder assembly and a capillary tube. The piston-cylinder assembly includes a cylinder, a pneumatic port at first end of the cylinder, an outlet port at a second end of the cylinder opposite the first end, and a piston movable in the cylinder between the first end and the second end. The capillary tube has a tube inlet and a tube outlet, with the tube inlet being coupled to the outlet port of the cylinder. A metallic nanoparticle composition is contained in the cylinder. The metallic nanoparticle composition dispenser is configured such that the metallic nanoparticle composition is extruded by the piston through the capillary tube under pneumatic actuation by a regulated pneumatic system coupled to the pneumatic port.

A metallic nanoparticle composition dispenser includes a piston-cylinder assembly and a capillary tube. The piston-cylinder assembly includes a cylinder, a pneumatic port at first end of the cylinder, an outlet port at a second end of the cylinder opposite the first end, and a piston movable in the cylinder between the first end and the second end. The capillary tube has a tube inlet and a tube outlet, with the tube inlet being coupled to the outlet port of the cylinder. A metallic nanoparticle composition is contained in the cylinder. The metallic nanoparticle composition dispenser is configured such that the metallic nanoparticle composition is extruded by the piston through the capillary tube under pneumatic actuation by a regulated pneumatic system coupled to the pneumatic port.

The invention relates to a photosensitive printing composition comprising a photocatalyst which exhibits a photocatalytic effect when exposed to UV and/or visible radiation, a colouring agent that exhibits a colour change in response to the photocatalytic effect, and a film forming agent. The composition has a viscosity suitable for printing. The invention further relates to a sun-exposure sensor comprising a photosensitive layer printed on a surface of a support, the photosensitive layer comprising a photocatalyst which exhibits a photocatalytic effect when exposed to UV and/or visible radiation, a colouring agent that exhibits a colour change in response to the photocatalytic effect, and a film forming agent.

The invention relates to a photosensitive printing composition comprising a photocatalyst which exhibits a photocatalytic effect when exposed to UV and/or visible radiation, a colouring agent that exhibits a colour change in response to the photocatalytic effect, and a film forming agent. The composition has a viscosity suitable for printing. The invention further relates to a sun-exposure sensor comprising a photosensitive layer printed on a surface of a support, the photosensitive layer comprising a photocatalyst which exhibits a photocatalytic effect when exposed to UV and/or visible radiation, a colouring agent that exhibits a colour change in response to the photocatalytic effect, and a film forming agent.