A leuco composition comprises at least one reactive leuco compound, which reactive leuco compound comprises a leuco moiety and at least one reactive moiety covalently bound to the leuco moiety. A laundry care composition comprises a laundry care ingredient and a leuco composition. A method of treating a textile comprises the steps of (i) treating a textile with an aqueous solution containing a leuco composition, (ii) optionally, rinsing the textile, and (iii) drying the textile.

The present invention relates to 1,6,7,12-tetra-(2-isopropylphenoxy)-substituted perylene tetracarboxylic acid diimides of the formula (I) wherein R.sup.1 and R.sup.2 independently of each other are selected from hydrogen, C.sub.1-C.sub.24-alkyl, C.sub.1-C.sub.24-haloalkyl, C.sub.3-C.sub.24-cycloalkyl, C.sub.6-C.sub.24-aryl and C.sub.6-C.sub.24-aryl-C.sub.1-C.sub.10-alkylene, where the rings of cydoalkyi, aryl, and aryl-alkylene in the three last-mentioned radicals are unsubstituted or substituted as defined in the claims and in the description. Moreover, the present invention relates to the use of said perylene compounds, in particular to the use of said perylene compound(s) in color converters, for data transmission and in security inks for security printing. The present invention also relates to the use of said color converters, to their use in lighting devices, to lighting devices comprising at least one LED and at least said color converter and to a device producing electric power upon illumination comprising a photovoltaic cell and said color converter. ##STR00001##

A composition for a near-infrared light-absorbing film includes a binder, a compound represented by Chemical Formula 1, and a compound represented by Chemical Formula 2, wherein a total amount of the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 ranges from about 2.0 parts by weight to about 2.6 parts by weight based on 100 parts by weight of the binder. A near-infrared light-absorbing film may include a near-infrared light-absorbing layer including a cured product of the composition. A camera device may include the near-infrared light-absorbing film, and an electronic device may include the camera device.

There are provided a wavelength selective absorption filter including a resin, and four types of dyes A to D each having a main absorption wavelength range in different specific wavelength regions, in which an absorbance Ab (λ) of the wavelength selective absorption filter at a wavelength λ nm satisfies specific Relational Expressions (I) to (VI), and an organic electroluminescent display device.

Disclosed is a pigment composition which comprises (a) a pigment of formula wherein Ar.sup.1 is phenylene or C.sub.2-C.sub.6-heteroarylene, Ar.sup.2 is C.sub.6-C.sub.10-aryl or C.sub.2-C.sub.6-heteroaryl; and (b) a pigment derivative of formula (PM-C X1). (II), wherein P.sup.1 is a residue of a colorant chromophore, X.sup.1 is a group comprising an aliphatic carboxamide group, an aliphatic sulfonamide group, a carboxylic acid group or salt thereof, and m is 1, 2, 3 or 4. The pigment composition is suitable to color organic material, especially photosensitive resist formulations for use in color filter applications having high contrast ratios.

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A method of making a triarylmethane leuco compound comprises reacting an aromatic aldehyde compound, a first oxyalkylenated aryl compound, and a second oxyalkylenated aryl compound in a condensation reaction in the presence of an acidic catalyst to produce the triarylmethane leuco compound. The first oxyalkylenated aryl compound is oxyalkylenated with ethylene oxide. The second oxyalkylenated aryl compound is oxyalkylenated with propylene oxide or with both ethylene oxide and propylene oxide.

An object of the present invention is to provide a thermal transfer recording sheet that provides an image that is excellent in light fastness and has a satisfactory imbalance. The present invention relates to a thermal transfer recording sheet including a substrate and dye layers (a yellow dye layer, a magenta dye layer, and a cyan dye layer), in which one or more kinds of the dye layers each contain one or more kinds of specific compounds. The present invention also relates to a thermal transfer recording sheet including a substrate, dye layers, and a protective layer for protecting the surface of an image, in which the protective layer contains one or more kinds of specific compounds.

The present specification relates to a method for preparing a colorant composition comprising dissolving a first xanthene-based dye having the same number of positive charges and negative charges and a second xanthene-based dye having more negative charges than positive charges by one or more in a first solvent; and precipitating the dissolved first xanthene-based dye and the dissolved second xanthene-based dye in a second solvent, and a colorant composition, a colorant dispersion, a photosensitive resin composition, a color filter and a liquid crystal display device.

Provided are a coloring composition capable of producing a film having excellent light fastness, and the like, a method for producing a coloring composition, a color filter, a pattern forming method, a solid-state imaging device, and an image display device. The coloring composition includes a coated pigment in which at least a portion of a surface of a yellow pigment is coated with a resin, a halogenated phthalocyanine pigment, a dispersant having an acid value of 40 mgKOH/g or more, and a curable compound.

Provided are a resin composition including a colorant and a resin, in which the colorant contains two or more squarylium colorants represented by Formula (1) below, at least one of the squarylium colorants is a squarylium colorant having a hydrogen-bonding group, which is represented by Formula (2) below, and a colorant mixture consisting of the two or more squarylium colorants, which is included in the resin composition, has a maximum absorption wavelength in a wavelength range of 400 nm to 700 nm; an optical filter; a liquid crystal display device; a solid-state imaging element; and a colorant mixture.

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