Probes for the detection of β-lactamase-type enzymatic activity. In particular, novel fluorogenic substrates for detecting the presence of a catalytically active β-lactamase and a detection method using such substrates.

Solution comprising about 1 to about 25 wt % of a dye that loses its colour during radical cure and about 75 to about 99 wt % of a solvent mixture, said solvent mixture comprising cyclopentanone and dimethylsulphoxide in a weight ratio of about 60:40 to about 95:5.

A dye printing treatment liquid composition is used to be adhered to a cloth and includes a polyester resin and water, the polyester resin includes a structural unit derived from an aromatic compound and a structural unit derived from a non-aromatic compound, the aromatic compound includes a phthalic acid, the non-aromatic compound includes a (poly)alkylene glycol, a content of a structural unit derived from the phthalic acid with respect to 100 percent by mole of the polyester resin is 15 to 85 percent by mole, and a content of a structural unit derived from the (poly)alkylene glycol with respect to 100 percent by mole of the polyester resin is 15 to 85 percent by mole.

Provided are a compound represented by Formula 1, a tautomer of the compound or a salt of the compound or the tautomer, a coloring composition and a dyed article containing the compound represented by Formula 1, the tautomer of the compound, or the salt of the compound or the tautomer, and a dyeing method using the compound represented by Formula 1, the tautomer of the compound, or the salt of the compound or the tautomer. In Formula 1, X, R, Ar, n, and m1 are as defined in the specification.

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The disclosure relates to methods for coloring keratinous substrates using solubilized vat dyes, as well as compositions and kits suitable for carrying out the methods. The disclosure also relates to novel solubilized vat dyes.

Provided herein are color charts and water color pigment solutions useful, for example, in the calibration of reflectance-based diagnostic analyzers.

Aqueous leucoindigo solution comprising an aromatic amine, in particular aniline or aniline and N-methylaniline, wherein the concentration of the aromatic amine is below 200 ppm, wherein the leucoindigo salt in the solution is in the form of a mixed sodium and potassium salt, wherein the molar ratio of sodium to potassium is in the range of from above 3:1 to 10:1, preferably wherein the concentration of the salt is in the range of from above 25 to 45% by weight, based on the total weight of the solution.

Color conversion films for a LCD (liquid crystal display) having RGB (red, green, blue) color filters, as well as such displays, formulations, precursors and methods are provided, which improve display performances with respect to color gamut, energy efficiency, materials and costs. The color conversion films absorb backlight illumination and convert the energy to green and/or red emission at high efficiency, specified wavelength ranges and narrow emission peaks. Film integration and display configurations further enhance the display performance with color conversion films utilizing various color conversion elements and possibly patterned and/or integrated with a crosstalk blocking matrix. For example, color conversion and/or assistant dyes may be used to enhance spectral regions transmitted through the color filters and shape the illumination spectrum, to improve efficiency and performance.

Stable aqueous leucoindigo solution comprising an aromatic amine in the form of aniline or aniline and N-methylaniline, wherein said leucoindigo is in the form of an alkali metal salt; wherein the concentration of the aromatic amine is below 40 ppm determined according to ISO 14362-1:2017(E); and wherein the concentration of the leucoindigo salt is in a concentration range of from 10 to 45% by weight based on the total weight of the solution, and wherein the stability of the solution is measured at a temperature of 23° C.; or wherein the concentration of the leucoindigo salt is in a concentration range of from 45 to 65% by weight based on the total weight of the solution, and wherein the stability of the solution is measured at a temperature of 60° C.

Provided herein are color charts and water color pigment solutions useful, for example, in the calibration of reflectance-based diagnostic analyzers.