Provided are a coloring composition including a pigment A having a structure in which an aromatic ring group in which an electron-donating group is introduced into an aromatic ring is bonded to a diketopyrrolopyrrole skeleton, and a compound having a curable group, in which a content of the pigment A in a total solid content of the coloring composition is 35 mass % or more; a cured film formed of the coloring composition; a method for forming a pattern; a color filter; a solid-state imaging element; and an image display device.

The present invention provides a plastic article containing suspended photochromic dye molecules, and the said suspended photochromic dye molecules suspended in liquid micro-droplets of a suspension medium, and the said micro-droplets of the said suspension medium containing the said suspended photochromic dye molecules are embedded inside a solid polymer matrix, and the said solid polymer matrix is formed by polymerization of liquid polymer precursors. The invented structure of a plastic article containing suspended photochromic dye molecules exhibits fast response time and enhances photochromic performance.

The invention relates to a pigment particle for security applications, comprising a duromer matrix and a plurality of core particles of a thermoplastic polymer with a feature substance dissolved in the core particles embedded therein, wherein the feature substance is an organic or metalorganic substance. The invention further relates to a method for producing security pigments, for example luminescent printing pigments, by means of incorporation into a duromer matrix of thermoplastic polymer particles in which the luminescent illuminant is present respectively in dissolved form.

The present invention relates to [1] a pigment water dispersion containing pigment-containing crosslinked polymer particles, in which a crosslinked polymer in the particles is a polymer that is crosslinked with a crosslinking agent represented by the general formula (1), and [2] a process for producing a pigment water dispersion containing pigment-containing crosslinked polymer particles, including the following steps (1) and (2): Step (1): subjecting a pigment mixture containing a pigment, a water-dispersible polymer and water to dispersion treatment, thereby obtaining an aqueous pigment dispersion solution containing pigment-containing polymer particles; and Step (2): mixing the aqueous pigment dispersion solution obtained in the step (1) and a crosslinking agent represented by the general formula (1) to react the water-dispersible polymer with the crosslinking agent, thereby obtaining a pigment water dispersion containing pigment-containing crosslinked polymer particles.

The present invention relates a red color filter photoresist. The present invention adopts rhodamine and its derivatives with high dye uptake as a red dye, in combination with red and yellow pigment systems, to form a mixed dye-pigment red color filter photoresist that satisfies current requirements of wide color gamut and processing requirements of LCDs, which prevents that development of red color filter photoresist stagnates and leads to problems of products such as white points and dark state color points, and is advantageous to realize a liquid crystal display with wider color gamut.

A method for producing flakes of a resin thin film including: a step (1) of forming a resin thin film on a substrate film to obtain a multilayer film; a step (2) of pressing the multilayer film by a member having a concavo-convex shape to form cracks in the resin thin film; and a step (3) of stripping the resin thin film from the substrate film to obtain flakes. The step (2) is preferably performed with a pressing pressure of 100 MPa or less. The resin thin film is preferably formed of a cured product of a photocurable liquid crystal composition. The resin thin film is preferably a cholesteric resin layer.

An object of the present invention is to provide a colored photosensitive resin composition capable of forming a color filter having a higher brightness than that of the color filter formed from the conventionally known colored photosensitive resin composition.

The colored photosensitive resin composition according to the present invention comprises a colorant, a resin, a polymerizable compound, and a polymerization initiator, the colorant comprising a compound represented by formula (1) and an α-type and/or β-type copper phthalocyanine pigment,

##STR00001##

wherein M.sup.r+ represents an r-valent metal ion; k represents the sum of the number of —SO.sub.3.sup.− and the number of —SO.sub.2—N.sup.−—SO.sub.2—R.sup.f in the compound represented by formula (1); r represents an integer of 1 or more; R.sup.f represents a fluoroalkyl group having 1 to 12 carbon atoms; and the compound represented by formula (1) has at least one —SO.sub.3.sup.− or —SO.sub.2—N.sup.−—SO.sub.2—R.sup.f.

Provided are a coloring composition including a green colorant, a resin, and an organic solvent, in which the green colorant includes a squarylium compound having a solubility of 30 mg/L or less in propylene glycol methyl ether acetate at 25° C.; a film formed of the coloring composition; a color filter; a method for manufacturing a color filter; a solid-state imaging element; and an image display device.

Novel, nano-structured particles are formed by introducing a selected solid of interest into a structured fluid matrix formed by a dispersion of a small molecule host vessel components, such as a native or modified polysaccharide, cavitand, simple sugar, disaccharide, simple polyol or other similarly structured molecule known to be useful as a host vessel, in an acidic medium or other solvent, whereby the particle size of the introduced solid is reduced and or limited in the structured fluid matrix, by incorporation into or attachment to, the host vessel. The simple, one-batch mixing process results in stabilized colloidal dispersions of the nanoparticles of a variety of solids of varying scope and function and useful in a wide variety of applications, including without limitation ceramic materials, such as hexagonal boron nitride.

Provided herein is a colorant composition comprising: 1) water; 2) at least one water-soluble inorganic salt; 3) microcrystalline cellulose; and 4) at least one colorant comprising water-soluble anionic dyes, water-soluble fluorescent brighteners, water-soluble cationic dyes, or combinations thereof. The colorant composition described may have a weight ratio of the at least one water-soluble inorganic salt to the at least one colorant in the colorant composition ranges from 1:0.25 to 1:4.0 and a specific gravity of the colorant composition is about 1.05 kg/l to about 1.45 kg/l. Also provided are methods of preparing the disclosed colorant composition.