78results about "Reactive dyes" patented technology

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

The invention discloses a bisazo blue reactive dye for high-temperature dip dyeing as well as a preparation method and application of the bisazo blue reactive dye. The reactive dye is shown in a structural general formula (I). A color body of the reactive dye is of a bisazo structure, the color body contains two naphthalene ring structures and a benzene ring structure, and an active group in a dye molecular structure is quaternary ammonium salt containing a nicotinic acid structure. According to the present invention, the binding force between the dye and the fiber can be improved through the coplanarity of the chromophore molecules, the dissociation between the dye and the fiber at the high temperature can be reduced, and the dye uptake of the dye at the high temperature can be improved, such that the fixation rate between the dye and the fiber can be improved; meanwhile, quaternary ammonium salt containing a nicotinic acid structure can react with fibers under the high-temperature neutral condition, an alkaline agent does not need to be added in the whole dyeing process, the problem of environmental pollution caused by the alkaline agent in the printing and dyeing wastewater is solved, and wide application prospects are achieved.

The application discloses a high-fast orange reactive dye and a preparation method thereof, relates to the field of reactive dyes, and comprises a structure general formula as follows: formula 1: formula 2: or formula 3: wherein R1 is halogen; R2 is -H, -SO3M, -CH3, -COOM or -CHO; and M is Na, K or Li. The application has the effects of improving the fixing effect and dyeing performance of the reactive dye.

The application discloses a short-process printing process of polyester-cotton blended fabric, which comprises screen printing by using active disperse dyes containing double active groups and steaming by using alcohol vapor; the double active groups include hydroxyethyl sulfone sulfate group and CH2CH(OH)CH2X (X is Br or Cl); the CH2CH(OH)CH2X can be converted into an epoxy group under alkaline conditions and can react with the alcohol vapor during the steaming process to realize the cross-linking between dye molecules, so that the effects of improving the fixation efficiency and shortening the process flow are achieved, and then the printed fabric with high color depth and high color fastness is obtained.

This invention provides a method for preparing a tri-reactive orange dye, comprising: a primary condensation of cyanuric chloride with 2,4-diaminobenzenesulfonic acid, followed by hydrolysis and diazotization, a primary coupling with 3,5-diaminobenzoic acid, a secondary coupling with p-(β-hydroxyethyl sulfone sulfate)aniline diazonium salt, and a secondary condensation with p-(β-hydroxyethyl sulfone sulfate)aniline to obtain a dye paste. The dye structure is the dye prepared by this invention, which has good solubility, bright color, and can be used as a single-color dye or for blending with black dyes. It has high blackness, good compatibility, and maintains good fixation rate and color fastness while having low raw material cost, good economic efficiency, and high cost performance.

The application relates to the technical field of organic dyes, in particular to a double-active-group cationic modified anthraquinone reactive dye as well as a preparation method and application thereof. The preparation method of the double-active-group cationic modified anthraquinone reactive dye comprises the following steps: S1: dissolving 1-amino-4-sulfonic acid-1'-(N,N-dimethylpropylaminomethyl) anthraquinone in ice water, then adding melamine dropwise to carry out reaction, and obtaining an intermediate solution; S2: the intermediate solution is warmed to 20-25 DEG C, and hydroxyethyl sulfone sulfonate is added to carry out reaction; after the reaction is completed, salting-out is carried out, and the double-active-group cationic modified anthraquinone reactive dye is obtained, as shown in formula (1). The reactive dye is synergized through the cooperation of "double active groups + cationic adjustment + precise water-solubility design", can guarantee water-solubility and dyeing fastness, and can completely get rid of the dependence on a large amount of salt.

Disclosed herein, inter alia, are silicon containing detectable compounds and methods of use thereof.

The present invention is related to reactive dyes each of which comprises a dichlorotriazine, chlorotriazine or vinylsulphonyl group and is capable of absorbing HEVL. They are suitable for method for producing colored silicone hydrogel contact lenses each made of a silicone hydrogel material having hydroxyl groups. The present invention is also related to a colored silicone hydrogel contact lens comprising a colored circular region in which a reactive dye is applied and thereby covalently attached.

The present application belongs to the field of fine chemical industry and textile printing and dyeing, and relates to a reactive dye which can be used for fixing color of dyed polyester fabric by dry heat setting process, a preparation method and dyeing application thereof. The reactive dye provided by the present application has a general structure, and the present application also simultaneously provides the use of the reactive dye, i.e. fixing color of dyed polyester fabric by dry heat setting process. Through ingenious design and application of the carbene type dye, the present application realizes high color fastness effect of dyed polyester fabric, eliminates the adverse factors of high temperature heat setting, and expands the optional range of setting heat setting process (temperature, time).

Sulfonate-containing water-solubilizing peptides are provided. Such water-solubilizing peptides can be attached to, for example, a dye or a tandem dye to increase the solubility thereof. Also provided are methods of using the dyes that include the water-solubilizing peptides, as well as kits that include such dyes.

This invention relates to drug-device core-shell microneedle devices containing anti-diabetes and anti-obesity medications, and transdermal delivery of said medications. The microneedle drug-device system comprises: (a) a two-dimensional array of conical bilayer containing an inner layer with the base diameter ranging from about 100 mm to about 500 mm and the height ranging from about 100 mm about 1200 mm capable of accommodating a known amount of anti-diabetes and / or anti-obesity medications, and a suitable, photostable chromophore or a fluorophore whose absorption and / or emission occurring in the range of 400-900 nm; (b) a larger outer layer that adheres to and encapsulates the inner layer, and protects the inner layer, and (c) a two-dimensional array of cylindrical 'cap layer' that aligns with and adheres to the basal surface of core shell bilayer and seals the bilayer to prevent leakage of said medication(s). The apical (i.e., sharp) ends of the conical bilayer array inserts into the skin and are programmed to allow the said medications to effuse out of the bilayer and into the skin in a controlled fashion and to be monitored by photodetection devices.

The invention belongs to the technical field of reactive dyes, and particularly provides a preparation method of a bright yellow reactive dye. The bright yellow reactive dye prepared by the method disclosed by the invention is a bisazo dye, the fixation rate is relatively high, the color of a dyed fabric is full, sulfonic groups are increased, and the dye solubility is good; the dye is high in solubility and improvement rate, good in leveling property, green and bright in color, good in light fastness and wet rubbing fastness, good in cleaning rate and suitable for dyeing various cellulosic fibers, the fixation rate reaches 65%, the dye belongs to environment-friendly and energy-saving dye, the product is suitable for dyeing various cellulosic fibers, the production process is simple, clean and environmentally friendly, spray drying is adopted after synthesis, the wastewater discharge amount is reduced, and the production cost is reduced. And the national energy conservation and emission reduction policy is met.

Described are contact lenses containing light absorbing chromophores, wherein the light absorbing chromophore is concentrated in one or more select regions of the lens. Also described are methods for making such contact lenses.

The invention discloses a high-performance polyazo reactive dye as well as a preparation method and application thereof. The reactive dye is shown in a structural general formula (I). The reactive dye disclosed by the invention is a polyazo reactive dye which takes 2, 4-diaminobenzene sulfonic acid as a coupling component, has a molecular structure containing two vinyl sulfone sulfate active groups and four azo bonds, and is orange or reddish brown in color. The dye has remarkable symmetry and high molecular coplanarity and is particularly suitable for dyeing cellulose fibers at the high temperature (130 DEG C), dyed fabrics have good color fastness indexes, and the technical problem that existing dye containing vinyl sulfone sulfate active groups can only dye at about 60 DEG C and cannot dye at the high temperature is solved. A foundation is laid for applying the dye containing the vinyl sulfone sulfate active group to the'polyester-cotton one-bath 'process to dye cellulose fibers, and the dye has a wide application prospect.

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

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices. Such devices exhibit a number of desirable properties, including providing wearers with favorable optical quality.

The invention relates to the technical field of dyes, in particular to a non-photosensitive yellow dye composition and a dyeing method, the non-photosensitive yellow dye composition is prepared by compounding a compound A and a compound B, and the mass ratio of the compound A to the compound B is (10-90): (10-90); the method has the advantage that the light fastness and the dyeing uniformity of the dye can be improved at the same time.

According to one embodiment of the present invention, provided are a dye, a photosensitive resin composition to which the dye is applied, and a display device to which the photosensitive resin composition is applied. The dye includes: a chromophore containing five or more acrylate groups; and a protective group protecting the chromophore, and therefore has excellent light resistance, and thus is not deformed by external sunlight, and also has excellent chemical resistance and reflectance characteristics, and thus is not changed in color by other solvents during a process, even when molded at a low temperature.

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

The invention discloses a high-fixation-rate active bright yellow dye as well as a preparation method and application thereof. The active dye is shown in a structural general formula (I). The reactive dye disclosed by the invention is prepared by taking a pyridone compound containing an aliphatic primary amine group as a coupling component through multi-step reactions of diazotization, coupling, condensation and the like. Finally, the molecular structure of the dye contains four active groups, so that the fixation rate of the dye on cellulose fibers is improved, the technical problem of low fixation rate of the active bright yellow dye of the existing pyridone coupling component is solved, and the dye has a wide application prospect.

The invention discloses a preparation method of an azo reactive dye, which comprises the following steps: reacting cyanuric chloride with sodium 2, 5-diaminobenzene sulfonate to obtain a first condensate, diazotizing the first condensate, performing acidic coupling on the first condensate and acetyl J acid, performing alkaline coupling on the first condensate and a diazo solution of 6-beta-ethyl sulfuryl sulfate-2-naphthylamine-1-sulfonic acid, and finally performing secondary condensation on the second condensate and nicotinic acid to obtain the azo reactive dye. Reacting to obtain azo reactive dye primary pulp, wherein the structure of the dye is shown in the specification; the prepared dye is bright in color, excellent in solubility, high in storage stability, good in lifting power and good in fixation rate and color fastness.

The present invention is related to reactive dyes each of which comprises a dichlorotriazine, chlorotriazine or vinylsulphonyl group and is capable of absorbing HEVL. They are suitable for method for producing colored silicone hydrogel contact lenses each made of a silicone hydrogel material having hydroxyl groups. The present invention is also related to a colored silicone hydrogel contact lens comprising a colored circular region in which a reactive dye is applied and thereby covalently attached.

Provided are a compound represented by Chemical Formula 1, an antireflection film including the same, and a display device including the antireflection film.(In Chemical Formula 1, each substituent is the same as defined in the detailed description.)

This invention relates to the field of dye technology, specifically to a nitro-azo acid-induced color-changing reactive dye, its preparation method, and its applications. The preparation includes: a diazotization reaction of a weakly basic aromatic amine containing a nitro group, a condensation reaction of cyanuric chloride, cyanuric fluorochlorotrichloroisocyanurate, and H-acid, and a coupling reaction of the diazonium salt with the condensation product. The nitro-azo acid-induced color-changing reactive dye provided by this invention has a simple synthesis process, excellent acid-induced color-changing properties, and can exhibit significant color changes visible to the naked eye within a certain pH range. It can be directly used for environmental pH monitoring without the need for any optical devices, and has advantages such as convenience, speed, high sensitivity, and reversible color change. Applying this type of dye to the dyeing of cotton fibers can produce cotton textiles with acid-induced color-changing functions, showing broad application prospects.

A method for preparing an ophthalmic device for slowing, inhibiting or preventing myopia progression involves contacting an ophthalmic device having one or more reactive functional groups with one or more red-light blocking compounds having one or more reactive functional groups complementary to the one or more reactive functional groups of the ophthalmic device in a basic solution for a time period sufficient to covalently bond at least one reactive functional group of the ophthalmic device with at least one reactive functional group of the one or more red-light blocking compounds. The one or more red-light blocking compounds block greater than about 5% to about 25% of red-light transmission through the ophthalmic device at a wavelength of from about 550 nanometers (nm) to about 800 nm.

According to an embodiment of the present disclosure, the present disclosure provides a dye with excellent light resistance that is not deformed by external sunlight and excellent chemical resistance that does not change color by other solvents during the process even when molded at low temperatures, a photosensitive resin composition to which such dye is applied, and a display device to which the same is applied.

The present disclosure provides a photolabile protecting group compound comprising a thiophene ring, a nitrobenzyl group having a nitro group in an ortho position relative to a benzylic carbon, an alkyne linker connecting the thiophene ring to the nitrobenzyl group, and a hydroxamic acid moiety attached to the benzylic carbon through an oxygen atom, wherein upon irradiation with ultraviolet light, the compound undergoes photolysis to release the hydroxamic acid and generate a fluorescent nitrosoketone byproduct. The thiophene ring is connected to the nitrobenzyl group through a 2-position of the thiophene ring. The nitrobenzyl group has a methyl group attached to the benzylic carbon. The compound has an absorption maximum between 340 nm and 360 nm, and upon photolysis, the fluorescent nitrosoketone byproduct has an emission maximum between 440 nm and 500 nm with a 3-fold to 4-fold increase in fluorescence intensity that is observable with a naked eye.

The invention discloses a preparation method and application of an allochroic dye based on a bisazo structure, and belongs to the technical field of environment pH detection. The method comprises the following steps: adding 4-amino-5-hydroxy-2, 7-naphthalene disulfonic acid into a cyanuric chloride suspension, adjusting the pH value to 4-4.5, and carrying out a condensation reaction to obtain a first condensation solution; 4-amino-5-hydroxy-2, 7-naphthalene disulfonic acid is added into the first condensation solution for a condensation reaction, and a second condensation solution is obtained; and adding a diazonium salt into the secondary condensation liquid, adjusting the pH value to 1.0-2.0, carrying out a coupling reaction, and after the reaction is finished, purifying to obtain the bisazo color-changeable dye. The obtained color-changing dye is simple in synthesis process, easy to obtain, good in water solubility, high in sensitivity and good in selectivity, and the pH value of a solution can be rapidly detected through direct visual inspection.

The present invention relates to the field of isomeric mixture of reactive dyes that are suitable for the dyeing or printing of nitrogen-containing or hydroxy-group-containing fibre materials and yield on such materials dyeings or prints having a good build-up behaviour, a high fixation rate, good washing off properties of the unfixed dyes and good all-round fastness properties, as well as a good stability to various dyeing parameters such as a good bath stability. Furthermore, the present invention relates to a process for dyeing or printing of nitrogen-containing or hydroxy-group-containing fibre materials, wherein the isomeric mixture of reactive dyes according to the invention is used. The isometric mixture of the present invention comprises at least an isomer of formula (Ia) and an isomer of formula (Ib).

This invention relates to a method for preparing a water-soluble yellow reactive dye, comprising: adding water and ice to 2-naphthylamine-3,6,8-trisulfonic acid and slurrying, followed by a diazotization reaction to obtain a diazo material; adding water and ice to m-ureidoaniline, adding an alkali agent, and stirring to dissolve and obtain a clear m-ureidoaniline solution; adding the diazo material to the clear m-ureidoaniline solution and performing a coupling reaction at a controlled temperature to obtain a yellow base; adding water and ice to cyanuric chloride, adding dispersant CS and dispersant MF and slurrying, then adding sodium 2,4-diaminobenzenesulfonate and mixing and slurrying, with staged heating and pH adjustment to react and obtain a bicondensed material; adding the yellow base to the bicondensed material, heating and adjusting the pH, and performing a controlled reaction to obtain a dye slurry. The preparation method provided by this invention features high chroma conversion rate, short production cycle, and reasonable and efficient process, resulting in a product with excellent solubility, high fixation rate, good storage resistance, and bright color.