15results about "Indigoid dyes" patented technology

The invention relates to natural dye and green chemical industry, and particularly discloses water-soluble biological indigo blue and a preparation method thereof. The water-soluble biological indigo comprises the following raw material components in parts by weight: 80-90 parts of a biological-based indigo concentrated solution; 0.5 to 1 part of dimethyl sulfoxide; 10 to 15 parts of a solubilizer A; 5-10 parts of a solubilizer B; and 10 to 15 parts of deionized water. According to the invention, the bio-based indigo concentrated solution synthesized by a biological method is used as a raw material, the water-soluble compound is innovatively formed through beta-cyclodextrin inclusion and povidone compounding, and the water-soluble compound has relatively high water solubility; the water solubility of the product is greater than or equal to 50g / L, the stability is excellent, the obtained indigo dye is natural in source, environment-friendly and high in water solubility, secondary pollution of the traditional dye to the environment is avoided, and the indigo dye is suitable for sustainable chemical industry and green dyeing and finishing industries and can be widely applied to the fields of textile dyeing, water-based ink, cosmetic color developing agents, medicines and the like.

The invention discloses a preparation method of a light response type UV regulation and control material and a 3A optical film, and relates to the technical field of optical films.The preparation method comprises the steps that spiropyrane is dissolved in ethyl acetate to form an oil phase, and first liquid is obtained; dispersing nano silicon dioxide in a water phase containing gelatin to obtain a second liquid; stirring and mixing the first liquid and the second liquid to form an emulsion; evaporating the emulsion at 55-65 DEG C for at least 12 hours to form a spiropyrane-silicon dioxide hybrid nanocapsule; the spiropyrane-silicon dioxide hybrid nanocapsule is dispersed into light-cured polyacrylate, and a light response type UV regulation and control material is obtained; the 3A optical film comprises a light response type UV regulation and control layer, and the material of the light response type UV regulation and control layer is a light response type UV regulation and control material. The 3A optical film realizes flexible regulation and control of absorption of ultraviolet rays according to different weather scenes.

The invention relates to the technical field of indigo dyes, in particular to a water-soluble indigo derivative. The dye prepared from the water-soluble indigo derivative can be directly dissolved in water, so that the traditional indigo dyeing process can be thoroughly changed, and the water-soluble indigo derivative has the advantages of environmental protection, low toxicity, convenience in operation and the like, and can replace the traditional indigo dye.

An object is to provide a film that can achieve red color with high color purity and color vividness, and in a preferred aspect, also has good color purity and color vividness in the green and blue wavelength regions, and has excellent visibility. The main object is to obtain a film having a thickness of 0.2 µm to 1,000 µm, comprising a composition containing: a coloring agent (hereinafter referred to as a "light-blocking coloring agent A") characterized in that, when a film is formed on a glass substrate in a film thickness of 1 µm using transparent acrylic resin as a binder and at coloring agent concentration of 50% by weight, the average light transmittance of the film in the wavelength range of 660 nm to 1000 nm is 30% or more and the average light transmittance of the film in the wavelength range of 380 nm or more and less than 660 nm is 20% or less; a red coloring agent; and a binder, wherein the film has T1 (%) of 25% to 90%, where T1 (%) is an average value of light transmittance at wavelengths from 400 nm to 660 nm.

This invention aims to provide a film that achieves high color purity and vividness of red, and further, in a preferred embodiment, also provides a film with good color purity and vividness of green and blue, and excellent visual recognition. The film is defined as containing a colorant, a red colorant, and a binder. The colorant, when applied at a concentration of 50% by weight on a glass substrate with a thickness of 1 μm using a transparent acrylic resin as a binder, exhibits an average light transmittance of 30% or more at wavelengths from 660 nm to 1000 nm, and an average light transmittance of 20% or less at wavelengths from 380 nm to 660 nm. When the average light transmittance of the film at wavelengths from 400 nm to 660 nm is set as T1 (%), T1 (%) is 25% to 90%, and the film thickness is 0.2 μm to 1000 μm.

This invention relates to a process and apparatus for dyeing of textiles, to an immobilized enzyme comprised in said apparatus required for carrying out the process, and to a method to produce enzymatically indigo and derivatives thereof.

The invention discloses a 5, 5 '-dihydroxy-observation blue derivative as well as a preparation method and application thereof, and relates to the technical field of dyes. The invention provides a preparation method of 5, 6-difluoro-2, 3 According to the 5, 5 '-dihydroxy-observation blue derivative, cyanuric chloride is adopted to replace one or two hydroxyl groups on a 5, 5'-dihydroxy-observation blue parent nucleus, then any one of-NH-SO3M,-NH-Ar-SO3M and-NH-Ar-COOM is introduced on the basis of cyanuric chloride modification to replace chlorine atoms of cyanuric chloride, the polarity of molecules is improved, the molecular weight of the cyanuric chloride is increased, and the molecular weight of the cyanuric chloride is increased. And when the dye molecules are used as dye molecules, homogeneous dye liquor with good dispersity can be obtained, and the contact between the dye and fabric fibers is facilitated, so that the reactive dye with good dye uptake, fixation rate and color fastness to fabrics can be obtained.

Using the stems and leaves of *Indigofera tinctoria* as raw material, a combined high-pressure water extraction technology involving water spray washing and grading, along with steam explosion, was employed to effectively improve the release rate of active substances such as indole glycosides and polyphenols, as well as the conversion rate of indigo. Multifunctional indigo and polyphenol extracts were prepared through bio-fermentation and membrane fractionation purification. The indigo extract contained significantly more bioactive substances than traditional lime-based indigo powder and indigo acidified compounds, with 15 times more indigo, 25 times less ash, and 650 times less calcium. Compared to natural Indian indigo, it exhibited superior dyeing performance on cotton fabrics and showed better inhibitory effects against *Aspergillus niger*, *Staphylococcus aureus*, and *Escherichia coli*. The *Indigofera tinctoria* polyphenol extract, composed of phenolic acids, phenylethyl glycosides, flavonoids, and polysaccharides, demonstrated excellent inhibitory activity against *Staphylococcus aureus* (IC50 = 32 μg / mL) and a wound healing rate exceeding 98% in mice, exhibiting good broad-spectrum antibacterial and wound-healing properties.

Provided is a colored resin composition comprising (A) a resin containing a hydroxyl group or an acid group, (B) a colorant, (C) a dispersant, and (D) a blocked isocyanate, wherein the dispersant (C) is an acrylic dispersant having a basic group. The colored resin composition can cure at low temperatures and has excellent viscosity stability at ordinary temperature. The colored resin composition, even after a light-resistance test or a high-temperature high-humidity test, retains high adhesiveness.

An object is to provide a film that can achieve red color with high color purity and color vividness, and in a preferred aspect, also has good color purity and color vividness in the green and blue wavelength regions, and has excellent visibility. The main object is to obtain a film having a thickness of 0.2 µm to 1,000 µm, comprising a composition containing: a coloring agent (hereinafter referred to as a "light-blocking coloring agent A") characterized in that, when a film is formed on a glass substrate in a film thickness of 1 µm using transparent acrylic resin as a binder and at coloring agent concentration of 50% by weight, the average light transmittance of the film in the wavelength range of 660 nm to 1000 nm is 30% or more and the average light transmittance of the film in the wavelength range of 380 nm or more and less than 660 nm is 20% or less; a red coloring agent; and a binder, wherein the film has T1 (%) of 25% to 90%, where T1 (%) is an average value of light transmittance at wavelengths from 400 nm to 660 nm.

The present invention relates to a method and an apparatus for dyeing textiles, an immobilized enzyme contained in said apparatus required for carrying out the method, and a method for enzymatic production of indigo blue and derivatives thereof.

To provide a filler-containing film capable of performing accurate alignment when manufacturing a connection structure such as a μ LED display by mounting a light emitting element such as a μ LED on a substrate via the filler-containing film containing a black pigment capable of forming a black matrix.SOLUTION: The filler-containing film in which the conductive particles are held in the insulating adhesive layer has an average transmissivity of 10% or less for visible rays having wavelengths from 400nm to 700nm, and an average transmissivity of 30% or more for near infrared rays having wavelengths from 800nm to 1200nm. A content of the black pigment in the insulating adhesive layer is 6 mass% or more and 30 mass% or less, and a layer thickness of the insulating adhesive layer is 1 μm or more and 20 μm or less.SELECTED DRAWING: Figure 1A

The present invention provides a composition, film, optical filter, solid-state image sensor, image display device, infrared sensor, camera module, and near-infrared absorbing dye capable of forming a film in which the occurrence of foreign matter defects is suppressed. [Solution] A composition comprising a near-infrared absorbing dye having an inclusion compound structure a1 in which a compound represented by formula (1) is a guest and a cyclic compound that encloses the aforementioned guest is a host, or an inclusion compound structure a2 in which a compound having a pigment structure derived from a compound represented by formula (1) is a guest and a cyclic compound that encloses the pigment structure of the aforementioned guest is a host, a curable compound, and a solvent. JPEG2026049421000090.jpg30170

The present invention concerns the use of light to convert indicant to indigo. The invention is particularly useful in dyeing textiles from indican by simple light exposure, thereby providing a greener alternative to current industrial processes for colored fabrics and other products.

To provide an apparatus for performing a process that dyes a textile comprising enzymatic synthesis of a dye precursor.SOLUTION: An apparatus comprises: a first chamber for contacting indole or a derivative thereof with a first immobilized enzyme to convert it into indoxyl or a derivative thereof; and a second chamber for storing a textile and means to generate a flow, wherein both chambers are in fluid connection with each other, indoxyl or a derivative thereof is flowed from the first chamber to the second chamber for conversion into indigo or a derivative dye thereof, and the textile is dyed.SELECTED DRAWING: Figure 5