11results about "Reactive dyes" patented technology

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.

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.

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.

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.

The present application belongs to the technical field of dyeing and finishing, and relates to a red reactive dye for cellulose loose fiber dyeing, a preparation method and application thereof, a chemical structural formula of the red reactive dye is shown in structure I or structure II: when the red reactive dye is prepared, first, dye intermediate M is synthesized by taking reactive brilliant red X-3B and aminophenol as raw materials, then the dye intermediate M and cyanuric chloride are reacted to prepare the red reactive dye for cellulose loose fiber dyeing; when the red reactive dye is applied, the above-mentioned red reactive dye, penetrating agent BY-JFC and alkali agent are added into water to prepare a dyeing solution, and then cellulose loose fiber is immersed in the dyeing solution for dyeing, stacking, washing, soaping, re-washing, fixing and drying. The red reactive dye for cellulose loose fiber dyeing has high activity, completely solves the long-time stacking and high-alkali dependence problems caused by the insufficient reaction activity of a traditional active group, has a simple preparation process, and has fast dyeing speed and higher fixing rate when applied.

The present invention relates to the field of isomer mixtures of reactive dyes suitable for dyeing or printing nitrogen-containing or hydroxyl-containing fibre materials, the dyeings or prints produced thereon having good build-up properties, high fixation, good wash-off of unfixed dye and good all-round fastnesses, as well as good stability to various dyeing parameters, such as good bath stability. Furthermore, the present invention relates to a process for dyeing or printing nitrogen-containing or hydroxyl-containing fibre materials, wherein an isomer mixture of reactive dyes according to the present invention is used. The isomer mixtures according to the invention comprise at least an isomer of formula (la) and an isomer of formula (lb).

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

The present invention relates to polymerizable absorbers of UV and high energy visible light. The present invention describes polymerizable high energy light absorbing compounds. The compounds absorb UV and / or high energy visible light of various wavelengths and are suitable for incorporation into various products such as biomedical devices and ophthalmic devices such as hydrogel contact lenses. The monomers have the following general formula I, wherein X is O, S, NR, SO, or SO2; Y is a linking group; Pg is a polymerizable group; and EWG is an electron withdrawing group.

A reactive dye, a manufacturing method thereof, and a contact lens are disclosed. The manufacturing method includes: mixing a hydrophilic molecule and water in a weight ratio of 10:1 to 1:3 to form a co-solvent; adjusting the co-solvent to a pH range with a weak base; and adding a dye to the co-solvent to allow the dye to react with the hydrophilic molecule to form a reaction product containing the reactive dye. The hydrophilic molecule is an acrylic ester having a hydroxyl group. The chemical structure of the dye has a reactive functional group to react with the hydroxyl group of the hydrophilic molecule in the reaction. The reactive functional group of the dye is at least one of a vinyl sulfonate functional group, a sodium sulfonate functional group, and a sulfonate functional group. Thus, the yield of the target product (reactive dye) is effectively improved, and the generation of undesirable by-products is effectively reduced.

Labels that include dibromopyridazinedione attached to signal molecules are disclosed, along with methods of producing and using same. Also disclosed are conjugates of the label attached to an analyte-specific binder, as well as methods of producing and using same. Kits containing the labels and / or conjugates are also disclosed, along with microfluidics devices containing same.