Abstract: An objective of the present invention is to provide a resin composition capable of improving at least either one of heat resistance and visible light transmission. A resin composition according to an aspect of the present invention contains a coloring agent and a resin, and the coloring agent contains a compound represented by a formula (I), a formula (II), a formula (III) or a formula (IV).

Abstract: An object of the present invention is to provide a novel squarylium dye that can achieve an equivalent chromaticity value of even a colored resin composition having a low content of the squarylium dye as compared with a colored resin composition comprising a conventional squarylium dye. The present invention provides a compound represented by the formula (I) wherein R4 to R4 each independently represent a hydrogen atom or the like; R5 to R8 each independently represent a hydrogen atom or the like; R9 and R10 each independently represent a monovalent saturated hydrocarbon group having 1 to 20 carbon atoms or the like; R11 and R12 each independently represent a halogen atom or an alkyl halide group having 1 to 6 carbon atoms; and m1 and m2 each independently represent an integer of 1 to 5.

Abstract: 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, Ra 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.

Abstract: An object of the present invention is to provide a colored curable resin composition for forming an optical filter in which the occurrence of foreign matter is reduced. The present invention relates to a colored curable resin composition containing a colorant, a resin, a polymerizable compound, and a polymerization initiator, wherein the colorant is a colorant containing a compound represented by formula (I) or formula (II).

Abstract: An object of the present invention is to provide a colored resin composition comprising a squarylium dye excellent in heat resistance. The colored resin composition according to the present invention is a green colored resin composition comprising a colorant, a resin and a solvent. The colorant contains a squarylium dye, and the content percentage of the resin is 70 mass % or more based on an amount obtained by subtracting the content of the colorant and the solvent from the total amount of the green colored resin composition.

Abstract: 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, Ra 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.

Abstract: Provided is a colored resin composition excellent in storage stability. The colored resin composition according to the present invention is a colored resin composition comprising a colorant, a resin and a solvent, the colorant comprising a dye, the solvent comprising a first solvent which is propylene glycol monomethyl ether acetate, and a second solvent which is a ketone having 3 to 12 carbon atoms, and the ketone being a chain or branched saturated ketone comprising only an oxygen atom of a carbonyl group as a heteroatom.

Abstract: An object of the present invention is to provide a novel squarylium dye that can achieve an equivalent chromaticity value of even a colored resin composition having a low content of the squarylium dye as compared with a colored resin composition comprising a conventional squarylium dye. The present invention provides a compound represented by the formula (I) wherein R4 to R4 each independently represent a hydrogen atom or the like; R5 to R8 each independently represent a hydrogen atom or the like; R9 and R10 each independently represent a monovalent saturated hydrocarbon group having 1 to 20 carbon atoms or the like; R11 and R12 each independently represent a halogen atom or an alkyl halide group having 1 to 6 carbon atoms; and m1 and m2 each independently represent an integer of 1 to 5.

Abstract: The problem is to provide such an ink-jet ink for organic EL devices that a jetted droplet trails no ligaments and wet-spreads well upon adhering. The solution is an ink-jet ink for organic electroluminescent device comprising water, a surfactant and an aqueous macromolecular material, wherein the ink has a static surface tension of 40 mN/m or less and a dynamic surface tension, measured by a maximum bubble pressure method at 100 Hz, of 55 mN/m or more.