12results about "Sulfur dyes" patented technology

The invention discloses a clean production process of a sulfur black dye, which comprises the following steps: S1, uniformly mixing dinitrochlorobenzene and a sodium hydroxide aqueous solution, and carrying out hydrolysis reaction to obtain a sodium dinitrophenolate solution; s2, uniformly mixing part of the sodium dinitrophenolate solution with a catalyst and a solvent, and carrying out hydrogenation reaction by using hydrogen to obtain a sodium diaminophenol solution; and S3, taking the sodium diaminophenol solution, the residual sodium dinitrophenol solution and the sodium polysulfide solution, and carrying out condensation reaction to obtain the sulfur black dye. According to the production process, hydrogenation reduction clean production is adopted, the generation amount of three wastes can be greatly reduced, especially the amount of salt-containing wastewater can be reduced by 20-90%, the content of pollutants in residual liquid is low, treatment is easy, environmental pollution is reduced, the production period is short, the efficiency is high, the product quality is stable, the process control is simple and convenient, and the color fastness of the obtained sulfur black dye is higher.

The present invention provides a light absorption filter, a light filter using the light absorption filter, a method for manufacturing the light filter, an organic electroluminescent display device, an inorganic electroluminescent display device or a liquid crystal display device including the light filter, and a method for manufacturing the organic electroluminescent display device, the inorganic electroluminescent display device or the liquid crystal display device. The light absorption filter contains a resin, a specific dye, and a compound that generates radicals by irradiation with ultraviolet light, and a polymer constituting the resin contains a crosslinkable group. The light absorption filter includes a resin, a compound A having an acid group, a compound B that forms a hydrogen bond with the acid group included in the compound A and generates a radical by ultraviolet irradiation, and a specific dye. The compound A is included in a side chain of a polymer constituting the resin.

An absorbent article having a topsheet, a backsheet, an absorbent core disposed at least partially between the topsheet and the backsheet, and a wetness indicating composition is provided. The wetness indicating composition includes a colorant and a colorant fastener. The colorant has a first color state, wherein the first color state is associated with a first state of the wetness indicating composition. The colorant has a second, different color state, wherein the second color state is associated with a second state of the wetness indicating composition. The wetness indicating composition is disposed on the absorbent article in a plurality of discrete graphics, wherein each of the plurality of discrete graphics has an area of between about 0.02 cm2 and about 25 cm2.

The present invention relates to the use of a fluorescent composition for protecting a product, said composition comprising a polymer matrix incorporating a compound having formula I: [Formula I]

The present invention relates to a process for preparing one or more thiopyridinone-type compounds of formula (I) and their optical isomers, geometric isomers, and tautomers, as well as their organic or mineral acid or base salts, and their solvates such as hydrates. The invention also relates to one or more thiopyridinone-type compounds of formula (I'') and a composition incorporating said compounds.

To provide a method, non-transitory computer readable media, and apparatus for marking a printed object.SOLUTION: A method for marking a printed object includes: printing a three dimensional (3D) object 110 via a fused filament fabrication (FFF) printer; receiving a color marking desired to be marked on a surface of the 3D object; and controlling a point energy source 104 to emit energy on a heat treatment layer of the 3D object according to the desired color marking.SELECTED DRAWING: Figure 1

Described are contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving one or more vision attributes.

A light absorption filter containing a resin, a specific dye, and a compound that generates a radical upon ultraviolet irradiation, in which a polymer constituting the resin contains a crosslinkable group, a light absorption filter containing a resin, a compound A having an acid group, a compound B that forms a hydrogen bond with the acid group contained in the compound A and generates a radical upon ultraviolet irradiation, and a specific dye, in which the compound A is contained in a side chain of a polymer constituting the resin, an optical filter using these light absorption filters and a manufacturing method thereof, and an organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, each of which contains the optical filter.

A fluorescent dye according to formula (I), (II), (III), (IV), (V), (VI), (VII), (VIII), (IX), (X) and (XI): with R 1 selected from the group nitrile, nitro, formyl, carboxyl, substituted or unsubstituted C2-C 20 Acylalkyl, substituted or unsubstituted C5-C 20 Acylaryl, substituted or unsubstituted C2-C 20 Acyloxy, substituted or unsubstituted C2-C 20 Ester, substituted or unsubstituted C2-C 20 Amide with R 2 selected from the group hydrogen, nitrile, nitro, formyl, carboxyl, substituted or unsubstituted C2-C 20 Acylalkyl, substituted or unsubstituted C5-C 20 Acylaryl, substituted or unsubstituted C2-C 20 Acyloxy, substituted or unsubstituted C2-C 20 Ester, substituted or unsubstituted C2-C 20 Amide with R3 , R 4 , R 5 and R 6 independently selected from the group of substituted or unsubstituted C1-C 20 Alkyl, substituted or unsubstituted C2-C 20 Alkyl ethers and substituted or unsubstituted C6-C 20 Aryl; and with Z and X selected independently from a substituted or unsubstituted methylene or a substituted or unsubstituted ethane-1,2-diyl, where in formulas (I), (II), (III), (VI), (VII), (VIII), (IX) and (X) Z and X represent the substituted methylene and the substituted ethane-1,2-diyl with at least one substituted or unsubstituted C1-C 20 Alkyl and / or with a substituted or unsubstituted C2-C 20 Esters are substituted.

An absorbent article is provided having a topsheet, a backsheet, an absorbent core disposed at least partially between the topsheet and the backsheet, and a humidity indicating composition. The humidity indicating composition includes a colorant and a colorant fixing agent. The colorant has a first color state, wherein the first color state is associated with a first state of the humidity indicating composition. The colorant has a second, different color state, wherein the second color state is associated with a second state of the humidity indicating composition. The humidity indicating composition is disposed on the absorbent article in a plurality of discrete patterns, wherein each pattern of the plurality of discrete patterns has an area between about 0.02 cm < 2 > and about 25 cm < 2 >.