14results about "Naphthalimide/phthalimide dyes" patented technology

To provide a colored resin composition that can form a color filter having excellent heat resistance and light resistance.SOLUTION: This invention relates to a colored resin composition that contains a colorant and an alkali-soluble resin, the colorant containing a terylene compound having 8 or more rings fused together.SELECTED DRAWING: None

The present invention provides a pigment composition that can improve absorbance across the entire visible light spectrum without increasing absorbance in the ultraviolet region. Furthermore, it provides a colored composition and molded article that achieve high light-shielding properties without interfering with active energy ray curing. [Solution] The pigment composition of the present invention comprises one or more compounds (A) represented by the following general formula (i), and a pigment (B). The pigment composition comprises one or more pigments selected from the group consisting of carbon black, benzodifuranone pigments, and perylene pigments. [C1] TIFF2026095407000040.tif17170

The present invention provides a pigment composition that can improve absorbance across the entire visible light region without increasing absorbance in the ultraviolet region. It also provides a colored composition and molded article that can achieve high light-shielding properties without interfering with active energy ray curing. The pigment composition of the present invention comprises one or more compounds (A) represented by the following general formula (i) and a pigment (B). The pigment composition comprises one or more pigments selected from the group consisting of carbon black, benzodifuranone pigments, and perylene pigments. [C1] TIFF0007838715000041.tif17170

This invention relates to a method for preparing easily dispersible pigments using graphene-modified CI Pigment Red 179. Monolayer graphene or monolayer graphene oxide powder and a solvent are added to water and stirred to mix. CI Pigment Red 179 is then added, and the mixture is stirred and slurried to obtain a pigment slurry. A nonionic surfactant is added, and the mixture is stirred and slurried again. The slurry is then dispersed by grinding in a sand mill. An anionic surfactant is added to the dispersed slurry, and the mixture is dried in a spray dryer to obtain an easily dispersible pigment. The easily dispersible pigment obtained by this invention using graphene-modified CI Pigment Red 179 exhibits high tinting strength, small particle size, more concentrated particle size distribution, and good dispersibility when used in coatings and inks. The tinting strength can reach 129%, the average particle size is reduced from 24.140 μm to 4.482 μm, the particle size distribution is more concentrated, and soft, easily dispersible pigment particles are obtained.

[Problem] To provide a colorant that has high heat resistance and thus does not cause discoloration or fading even when exposed for a long period of time under long-term high heat conditions, that has excellent bleed resistance and sublimation resistance and thus does not cause color to migrate to a mold or to other resin components, and that does not cause a thermoplastic resin to lose the physical properties thereof when added thereto. [Solution] This colorant includes at least one compound represented by chemical formula (1a), at least one compound represented by chemical formula (1b), and / or at least one compound represented by chemical formula (1c) (in chemical formulas (1a), (1b), and (1c), each of R1, R2, R4, R5, R7, and R8 is a hydrogen atom or a nitrogen-containing heterocyclic group or an amino group that may have a substituent, each of R3, R6, and R9 is at least one group selected from among an alkoxy group, a carboxy group, a hydroxy group, a sulfo group, and a sulfonamide group, p and r are each 0 to 2 inclusive, and q is 0 to 4 inclusive).

The present application relates to dyes containing a naphthalimide core and their uses as fluorescent labels. These dyes may be used as fluorescent labels for nucleotides in nucleic acid sequencing applications.

A luminescent compound has a structure represented by a general formula (1),wherein R represents a luminescent dye skeleton, X represents an ionic substituent, and L represents a single bond, an oxygen atom, a sulfur atom, a selenium atom, or an NH group.

The invention discloses a naphthalimide fluorescent dye as well as a preparation method and application thereof, and relates to the technical field of fluorescent dyes, a naphthalimide compound is taken as a two-photon fluorescent substrate, a palladium ion recognition group is introduced through chemical reaction, so that fluorescence of the compound is quenched, and the naphthalimide fluorescent dye is obtained; the naphthalimide fluorescent dye can generate a specific reaction after recognizing palladium ions, so that fluorescence is enhanced, and fluorescence emission with the wavelength of 460 nm is generated in an excitation state with the wavelength of 360 nm; by utilizing the opening characteristic, a powerful detection tool is provided for controlling the content of palladium ions in raw material medicines and chemical intermediates.

This invention discloses a high-temperature resistant fluorescent dye and its preparation method, relating to the field of dyes. In preparing the high-temperature resistant fluorescent dye, 4-bromo-1,8-naphthalenedicarboxylic anhydride is reacted sequentially with allylamine and 4-(N,N-dimethylaminosulfonyl)phenylboronic acid pinacol ester to obtain a modified fluorescent dye. 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl and 3,3',4,4'-biphenyltetracarboxylic dianhydride are polymerized using silica as a template, followed by grafting of an epoxy compound containing double bonds. The silica is then etched with hydrofluoric acid to obtain transparent polyimide porous microspheres. The transparent polyimide porous microspheres, the modified fluorescent dye, and hydrogen-containing silicone oil are reacted to obtain the high-temperature resistant fluorescent dye. The high-temperature resistant fluorescent dye prepared by this invention exhibits excellent migration resistance and high-temperature resistance.

To provide a polarized light emitting film which offers high transmittance in the visible light region and high durability in harsh environments, and to provide a polarized light emitting plate and a display device.SOLUTION: Provided herein is a polarized light emitting film containing a water-soluble naphthalimide compound represented by formula (1) below or a salt thereof. (In formula (1), A represents a naphthalimide skeleton that may have a substituent, X represents a sulfo group or carboxy group, and n represents an integer of 1 to 3.)SELECTED DRAWING: None

To provide a color filter red coloring composition which offers superior dispersion stability and is capable of suppressing water-induced irregularity during manufacturing of a color filter.SOLUTION: A color filter red coloring composition is provided, containing a coloring pigment, pigment dispersant, pigment dispersion aid, resin, and organic solvent. The coloring pigment contains C.I.Pigment Red 179. The pigment dispersant has a quaternary ammonium salt. The resin contains an acrylic resin having a double bond.SELECTED DRAWING: None

The present invention provides a pigment composition that can improve absorbance across the entire visible light region without increasing absorbance in the ultraviolet region. It also provides a colored composition and molded article that can achieve high light-shielding properties without interfering with active energy ray curing. The pigment composition of the present invention comprises one or more compounds (A) represented by the following general formula (i) and a pigment (B). The pigment composition comprises one or more pigments selected from the group consisting of carbon black, benzodifuranone pigments, and perylene pigments. [C1] TIFF0007838715000041.tif17170

The application discloses a preparation method of a purple perylene pigment, which comprises the following steps: under the protection of nitrogen, dissolving inorganic alkali and organic alkali in a polar halogenated aromatic hydrocarbon, heating to 80-120 DEG C under stirring, adding compound 4 and compound 5 after the solid is completely dissolved, heating to 170-190 DEG C after the addition is completed, reacting for 8-14 hours, stopping heating, naturally cooling to room temperature, and obtaining dark red solid through post-treatment; the prepared dark red solid is subjected to ball milling to add ball milling materials to carry out pigmentization processing, and the purple perylene pigment is obtained; the product prepared by the preparation method of the purple perylene pigment is a chemical mixed product, and the color light of the product is consistent with the color light of C.I. Pigment Violet 29 commodity after ball milling processing. Meanwhile, the color light brightness of the product is also consistent with the color light brightness of C.I. Pigment Violet 29 commodity.