A copolymer useful as an ingredient of a colored resin composition, comprising a structural unit derived from an aromatic carboxylic acid having an ethylenically unsaturated bond, a structural unit (Ab) represented by formula (Z), and a structural unit (Ac) derived from an unsaturated compound having a cyclic ether structure having 2 to 4 carbon atoms, wherein L represents a single bond or a divalent linking group, A represents a phenyl group optionally having a substituent other than a carboxy group or a naphthyl group optionally having a substituent other than a carboxy group, R.sup.a represents a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms, and a hydrogen atom contained in the alkyl group is optionally replaced by a hydroxy group. ##STR00001##

A liquid color masterbatch composition for fabricating a colored fiber includes 30.0 to 44.4 parts by weight of a colorant, 14.0 to 44.4 parts by weight of a lubricant, and 11.2 to 56.0 parts by weight of a carrier, in which a viscosity of the liquid color masterbatch composition between 13000 cP and 18000 cP.

A coloring tablet may have excellent solubility and redispersibility and a water-based ink composition for a writing instrument. Such a coloring tablet may contain at least a colorant and a dispersing agent. The dispersing agent may include a hydroxide neutralization product of an (meth)acrylic resin, a hydroxide neutralization product of a styrene-maleic acid copolymer resin, a polyoxyethylene-based surfactant, an alkyl condensed ring sulfonate, an amine ethylene oxide propylene oxide adduct, and/or a isobutylene-based polymer.

An infrared-absorbing composition includes particles of an infrared-absorbing coloring agent and a solvent, in which the particles in the infrared-absorbing composition have two or more maximal absorption wavelengths exhibited in a wavelength range of 650 to 1500 nm, and in the range, in a case where an absorbance at a maximal absorption wavelength existing on a second shortest wavelength side is set to 1, an absorbance at a maximal absorption wavelength existing on a shortest wavelength side is 0.6 to 2.0.

The present disclosure relates to a photovoltaic (PV) device that includes a color-conversion layer that includes at least one of a color-tuning layer and/or an intermediate layer and a photovoltaic layer where the color-conversion layer changes the appearance of the PV device when compared to a similar PV device constructed without the color-conversion layer, the color-conversion layer increases a power output of the PV device by at least one of reflecting light to the PV layer or emitting light which is redirected to the PV layer, and the device is at least partially transparent to light in the visible spectrum.

A colorant which has high heat resistance and thus causes neither discoloration nor fading even when exposed for a long period of time under long-term high-temperature conditions, and which has excellent bleed resistance and sublimation resistance and thus causes neither color migration to molds or other resin components, nor deterioration of physical properties of a thermoplastic resin added thereto. The colorant includes at least one compound represented by a specified chemical formula (1a), at least one compound represented by a specified chemical formula (1b), and/or at least one compound represented by a specified chemical formula (1c).

A curing system for an additive fabrication system includes a light source, a liquid crystal cell, and a first polarizer. The light source is configured to emit light at a wavelength suitable for curing a material. The liquid crystal cell is configured to receive the light from the light source. The first polarizer comprises a polyvinyl alcohol (PVA) matrix and organic dyes impregnated into the PVA matrix.

The present invention relates to an optical filter including: a substrate; and a dielectric multilayer film laid on or above at least one major surface of the substrate, as an outermost layer, in which: the substrate includes a resin film containing a dye (U) having a maximum absorption wavelength in a range of 360 to 395 nm in dichloromethane, a dye (A) having a maximum absorption wavelength in a range of 600 to 800 nm in dichloromethane, and a resin; and the optical filter satisfies spectral characteristics (i-1) to (i-5).

A process can be used for manufacturing a coloured moulding composition with an improved optical appearance and a particularly high thermal stability. The process involves providing a thermoplastic polymer and adding a colouring preparation, or a liquid composition or a master batch containing the colouring preparation. Injection moulded parts and extruded parts can be composed of the coloured moulding composition.

Disclosed is a photochromic composition comprising a naphthopyran-based photochromic compound having a specific structure and an oligomer.