The disclosure relates to ink compositions for digital printing on an external surface of a plastic article. The ink compositions comprise an ink removal-promoting additive. In some aspects, the ink removal-promoting additive can facilitate the separation or loosening of the image from the external surface of the article when the image is exposed to a liquid-based solution at an elevated temperature. Also disclosed are recyclable plastic articles having an external surface with an image printed thereon using the disclosed ink composition and methods for removing cured ink from a plastic container. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Herein is described a method of inkijet printing, and compositions and inksets for use in the method, the method comprising: printing onto a non-porous substrate an inkjet fixing composition comprising a cationic polymer in an amount of less than 5 wt. %; an organic acid in an amount of 3 wt. % or less; and a liquid vehicle; and printing a latex-containing inkjet ink composition onto the non-porous substrate.

Herein is described a method of inkijet printing, and compositions and inksets for use in the method, the method comprising: printing onto a non-porous substrate an inkjet fixing composition comprising a cationic polymer in an amount of less than 5 wt. %; an organic acid in an amount of 3 wt. % or less; and a liquid vehicle; and printing a latex-containing inkjet ink composition onto the non-porous substrate.

The present invention provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise a population of nanostructures comprising polyfunctional poly(alkylene oxide) ligands. The present invention also provides nanostructure films comprising the nanostructure compositions and methods of making nanostructure films using the nanostructure compositions.

The present invention provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise a population of nanostructures comprising polyfunctional poly(alkylene oxide) ligands. The present invention also provides nanostructure films comprising the nanostructure compositions and methods of making nanostructure films using the nanostructure compositions.

In a sensor ink for the quantitative detection of components in a closed package, comprising at least one fluorophore, a polymeric carrier matrix and at least one organic solvent, a silicon-organic system or a homopolymer or copolymer selected from the group of polystyrenes, polysulfones, polyether imides, polyether sulfones, polyvinylchloride (PVC), polyphenylene oxide (PPO), polysulfone derivatives, polyethylene terephthalate, biobased polymers, polylactic acid, cellulose ester and cellulose ether with a molecular weight of between 80,000 and 300,000, is contained as the carrier matrix, and the fluorophore is present in an amount of 1.5 wt. % to 7 wt. %, based on the polymer concentration, wherein the carrier matrix and the fluorophore together with the organic solvent form a solution having a viscosity of between 20 and 70 mPa.Math.s, and a method for producing a quantitative fluorescence sensor, and a sensor.

In a sensor ink for the quantitative detection of components in a closed package, comprising at least one fluorophore, a polymeric carrier matrix and at least one organic solvent, a silicon-organic system or a homopolymer or copolymer selected from the group of polystyrenes, polysulfones, polyether imides, polyether sulfones, polyvinylchloride (PVC), polyphenylene oxide (PPO), polysulfone derivatives, polyethylene terephthalate, biobased polymers, polylactic acid, cellulose ester and cellulose ether with a molecular weight of between 80,000 and 300,000, is contained as the carrier matrix, and the fluorophore is present in an amount of 1.5 wt. % to 7 wt. %, based on the polymer concentration, wherein the carrier matrix and the fluorophore together with the organic solvent form a solution having a viscosity of between 20 and 70 mPa.Math.s, and a method for producing a quantitative fluorescence sensor, and a sensor.

Provided is a dispersion liquid of colored resin fine particles for an aqueous ink having excellent stability and a sufficient drawn line intensity; an aqueous ink composition for a writing instrument such as felt-tip pens, marking pens, and ballpoint pens using the dispersion liquid of the colored resin fine particle as a colorant; and a writing instrument loaded with the composition. The dispersion liquid of colored resin fine particles for an aqueous ink includes colored resin fine particles dispersed in water, the colored resin fine particles composed of at least a cyclohexyl (meth)acrylate monomer, and a basic dye or an oil-soluble dye, in which the content of the cyclohexyl (meth)acrylate monomer is 30% by mass or more, and the content of the basic dye or the oil-soluble dye is 15% by mass or more based on the total polymer component constituting the colored resin fine particles.

Provided is a dispersion liquid of colored resin fine particles for an aqueous ink having excellent stability and a sufficient drawn line intensity; an aqueous ink composition for a writing instrument such as felt-tip pens, marking pens, and ballpoint pens using the dispersion liquid of the colored resin fine particle as a colorant; and a writing instrument loaded with the composition. The dispersion liquid of colored resin fine particles for an aqueous ink includes colored resin fine particles dispersed in water, the colored resin fine particles composed of at least a cyclohexyl (meth)acrylate monomer, and a basic dye or an oil-soluble dye, in which the content of the cyclohexyl (meth)acrylate monomer is 30% by mass or more, and the content of the basic dye or the oil-soluble dye is 15% by mass or more based on the total polymer component constituting the colored resin fine particles.

Provided are an ink composition for ink jet printing, and an image forming method and a recorded material using the ink composition for ink jet printing. The ink composition for ink jet printing includes: a colorant represented by the following Formula 1; resin particles; a water-soluble organic solvent; and water.

In Formula 1, Y.sup.1 and Y.sup.2 each independently represent a non-metal atomic group which forms an aliphatic ring or a heterocycle, M.sup.+ represents a proton or a monovalent alkali metal cation or organic cation, L.sup.1 represents a methine chain consisting of 5 or 7 methine groups, and a methine group at a center of the methine chain has a specific substituent.

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