14 results about "Pigment molecule" patented technology

The application provides a triarylmethane derivative, a pigment dispersion liquid, a preparation method thereof and a photoresist, and relates to the field of photoresists. The structural general formula of the triarylmethane derivative is: wherein X1 is selected from one of long-chain alkyl groups with a length of C1-C12, X2 is selected from hydrogen or an alkyl group, X3 is selected from one of H, an alkyl group and an aromatic group, and Q is selected from one of a carboxyl group, a sulfonic acid group and a phosphoric acid group. The triarylmethane derivative can generate strong van der Waals force and pi-pi conjugation effect with pigment molecules in a colorant by virtue of the large-plane conjugated triarylmethane skeleton, so as to be firmly anchored on the surface of the pigment particles; the strong polar functional groups such as the sulfonic acid group in the molecular structure of the triarylmethane derivative are combined with the alkaline dispersant, the side long-chain alkyl groups fully act on the dispersion medium, and the re-aggregation of the nano pigment particles is effectively prevented through strong steric hindrance and electrostatic stabilization mechanism, so that the problem of poor dispersion stability is solved.

The application provides a method for modifying DPP pigment with a tertiary butyl alcohol alkali salt, which uses DPP pigment as raw material, and also uses a tertiary butyl alcohol alkali salt, carbon dioxide and sulfonyl chloride as raw material; and uses an aprotic solvent as solvent; the method first synthesizes a salt containing a tert-butyloxycarbonyl group, and then uses the tert-butyloxycarbonyl group in the salt to modify an imino group in a DPP pigment molecule to obtain a modified DPP pigment. The application uses DPP pigment, a tertiary butyl alcohol alkali salt, carbon dioxide and sulfonyl chloride as raw material, uses an aprotic solvent as solvent, uses a unique molecular structure design, synthesizes a tert-butyloxycarbonyl group to directly modify an imino group on a DPP pigment molecule to achieve the purpose of chemical modification; the side reaction is low, and the generated by-product can be removed by water washing, and will not affect the performance of the parent pigment.

The invention relates to the technical field of wash supplies, in particular to a volcanic mud-containing composition with color fixing and locking effects and a preparation method of the volcanic mud-containing composition. The composition prepared by the invention is widely applicable to damaged, coarse or ironed and dyed hair, not only can solve the problem that the hair color is easy to change, but also can improve the problem of frizzy and dry hair, and realizes the combination of color holding and hair care, so that the hair color is lasting and beautiful, and the hair is easier to care. Specifically, through combined use of the hydroxyferriheme, the volcanic mud, the myrtle wood oil and the hydroxyethyl ethylenediamine triacetic acid, the obvious color fixing and locking effects can be jointly achieved from multiple aspects of delaying fading, reducing pigment molecule escape and enhancing light aging protection and color fixing; besides, hydrolyzed conchiolin protein, hydroxypropyl trimethyl ammonium chloride hydrolyzed collagen and behentrimethylammonium chloride are combined for use, so that the hair conditioner can be progressive layer by layer from the three layers of internal repair, charge neutralization and external lubrication, the hair combing resistance is jointly reduced, and the smoothness and combing property of the hair are improved.

The invention discloses a method for preventing color migration of pigment-dyed superfine fiber synthetic leather, which specifically comprises the following steps of: blade-coating a treating agent prepared from chemically modified cellulose, polyethylene glycol 200 and an aziridine cross-linking agent according to a certain concentration on the surface of pigment-dyed superfine fiber leather; the blade coating process comprises the steps of treating agent preparation, treating agent blade coating (the liquid carrying rate is 30%-60%), drying (the temperature is 80-100 DEG C, and the time is 1-5 min) and finished product obtaining. The treating agent disclosed by the invention consists of chemically modified cellulose, polyethylene glycol 200 and an aziridine cross-linking agent. The chemically modified cellulose has relatively strong hydrophilicity, and is matched with polyethylene glycol 200 with relatively high hydrophilicity, an isolating membrane formed under the action of an aziridine cross-linking agent is relatively high in polarity, compact in structure and stable in property, and pigments are encapsulated in the microfiber leather, so that migration of pigment molecules to the outside is effectively prevented; the purpose of preventing color migration of the pigment dyed superfine fiber synthetic leather is achieved.

The invention discloses pigment yellow 83 and a preparation method thereof, and relates to the technical field of pigments, in the pigment yellow 83, 3, 3 '-dichlorobenzidine is taken as a diazo component and is coupled with acetyl-4-chloro-2, 5-dimethoxyaniline, and modified rosin prepared by copolymerization of rosin, monoethyl maleate and cetyl alcohol is introduced in the later stage of reaction; and then mixing with calcium chloride and other raw materials. Carboxyl and long-chain alkyl are introduced into the modified rosin, so that hydrophilic-hydrophobic balance of the surface of the pigment is realized, and compatibility and dispersion stability with a coating system are enhanced; the calcium chloride can promote the pigment to be separated out from a water phase to form solid particles and can be further combined with carboxyl in the modified rosin, so that particle aggregation is inhibited, and the solubility of the modified rosin in pigment molecules is improved. The pigment yellow 83 has the advantages of being good in hydrophobic performance, coloring strength and dispersing performance.

This invention relates to a copper-doped anhydrous guanine crystal sheet, its preparation method, and its application, belonging to the field of spectral camouflage and stealth materials. Specifically, it relates to a method for synthesizing copper-doped guanine crystals. In this invention, copper-doped chlorophyll is used as the functional molecule, and organic small molecule uric acid and high molecular weight polymer (P(VP-co-VA)) are used as additives to regulate the synthesis of green guanine microsheets that preferentially expose the (100) crystal facet with the optimal refractive index. The guanine crystal microsheets prepared by this invention have high reflectivity and specific visible light absorption in the 200-2500 nm range, while also having the effect of weakening polarized light. Embedding the pigment molecules into the crystal lattice achieves a good stabilizing effect on copper-doped chlorophyll, making it a novel camouflage material with high reflectivity and excellent stability.

This invention discloses a high-transparency core-shell composite pigment yellow 74, its preparation method, and its applications. Using nano-silica hollow microspheres as nucleating agents and structural carriers, a heterogeneous nucleation-in-situ coating mechanism is employed. During the coupling reaction stage, pigment molecules generated by diazonium salt coupling are induced to grow directionally and densely coat the microsphere surface, forming a stable core-shell structure with inorganic hollow spheres as the core and organic pigments as the shell. This invention significantly improves pigment utilization and transparency while maintaining a relatively unchanged hue, meeting the requirements for color stability in high-end applications. No organic dispersants or surfactants are added throughout the reaction process. The pigment particle size refinement and high transparency are achieved through structural design rather than additive modification, avoiding the defects caused by dispersant residues, such as poor system compatibility, reduced weather resistance, and increased production costs.

This invention discloses a bleaching method for naturally colored cotton fabrics, comprising a complexed iron treatment, an oxidative bleaching reaction, and a washing step. This invention utilizes naturally occurring polyphenolic pigments in naturally colored cotton fibers as natural ligands for ferrous ions. First, a heterogeneous catalyst is formed by complexing iron onto the pigment molecules. In the subsequent oxidative bleaching reaction, the immobilized ferrous ions catalyze the decomposition of hydrogen peroxide to generate hydroxyl radicals. The generation of these radicals is spatially confined to the vicinity of the pigment molecules, forming an in-situ heterogeneous catalytic system. On one hand, the radicals preferentially attack neighboring pigment molecules, achieving highly efficient bleaching; the whiteness of the treated fabric can reach over 82%. On the other hand, because the generation of radicals is confined to the vicinity of the pigment, its attack on the cellulose molecular chains is effectively avoided, resulting in a fiber strength loss of less than 8.5% in both warp and weft directions. This invention achieves a balance between bleaching effect and fiber damage, and the reaction conditions are mild, environmentally friendly, and the process is simple.

The invention discloses a method for preparing waste grease-based vegetable insulating oil through manganese catalytic oxidation decolorization, which comprises the following steps: by taking a complex formed by manganese salt and 2, 2 '-bipyridine derivative as a catalyst and taking a urea hydrogen peroxide compound as an oxidant, carrying out selective catalytic oxidation on pigment molecules in waste grease under mild conditions, thereby obtaining the waste grease-based vegetable insulating oil. The decolorization rate can reach 85%-92%; a small amount of activated clay is subsequently used for adsorbing and removing the residual metal catalyst and trace oxidation byproducts, and the high-quality vegetable insulating oil with various physicochemical indexes meeting the requirements can be obtained. The use amount of the urea hydrogen peroxide compound used in the method is small, compared with direct use of high-concentration hydrogen peroxide, the stability is higher, the oxidability is milder and more controllable, and the problems of grease emulsification, acid value increase, non-selective oxidation and the like caused by excessive hydrogen peroxide are effectively avoided. The method is mild in reaction condition, high in selectivity, low in catalyst and auxiliary material consumption and suitable for industrial production of the high-quality vegetable insulating oil.

The application discloses a hair dyeing molecule for improving hair dyeing color fastness and hair oxidation resistance performance and a synthesis method thereof. The hair dyeing molecule is prepared by esterification or amidation reaction of a natural pigment molecule with a phenolic hydroxyl group, an alcoholic hydroxyl group, an amino group or an imino group structure and an organic acid containing an alpha, beta-carbon-carbon double bond, so as to obtain a natural pigment molecule derivative with an alpha-carbonyl carbon-carbon double bond structure. The improved pigment molecule is connected to the keratin of the hair through a chemical bond by a thiol click reaction, so that the pigment residence performance is greatly improved, and the color fastness effect is improved.

The utility model relates to the technical field of fluorescent dye molecule detection, in particular to fluorescent dye molecule detection equipment. The device comprises a workbench, the top of the workbench is fixedly connected with a detection box, a light source and a detection probe are arranged in the top end of the detection box, and a bearing plate is arranged in the bottom end of the detection box; a containing groove is formed in the top of the bearing plate in an embedded mode. A mounting frame is fixedly connected to the bottom of the bearing plate, a first motor is fixedly connected to the top of the mounting frame, an output shaft of the first motor is fixedly connected to the bottom of the containing groove, and the output shaft of the first motor is rotationally connected to the bearing plate through a bearing; by driving the placing groove, sample particles can be redistributed, the uniformity of the fluorescent dye can be improved, the overall fluorescence condition of the sample can be reflected more truly, and fluorescent pigment molecules in each layer from the surface to the inside can be effectively excited through rotation.

The invention belongs to the field of daily chemicals, and particularly relates to a hair care composition with a color protection effect and an anti-ultraviolet function for hair dyeing, which comprises the following components in percentage by weight: 0.1-2% of baobab tree seed oil extract; 0.005 to 0.5 percent of a light protective agent; 2 to 10 percent of methyl polytrimethylsiloxane; 0.3 to 3 percent of bis (cetearyl) amino-terminated polydimethylsiloxane; 2-6% of a softening and moistening agent; 30-60% of a softener; and the balance of volatile carrier oil. Through the synergistic interaction of the adansonia digitata seed oil and the light protective agent, the ultraviolet resistance of the composition is improved, the damage of ultraviolet rays to pigment molecules is greatly reduced, the conditions of color development and fading or gloss loss caused by the ultraviolet rays can be reduced, and the service life of the composition is prolonged. In addition, excellent anti-ultraviolet and hair color protection effects can be obtained under the condition that less light protective agent is added.

Provided is an optical detection chip that makes it possible to accurately measure, in a short time, hydrogen sulfide and methyl mercaptan contained in a gas subject to detection. An optical detection chip is provided with: an optically transparent substrate; and a layer structure provided with a pigment layer that is formed on the optically transparent substrate, that includes organic pigment molecules containing amino groups, ketone groups, or quinones, as well as metal ions of at least one kind selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Ag, Pb, and Tl, and that exhibits a color change in response to a gas subject to detection including at least one of hydrogen sulfide and methyl mercaptan.

The utility model discloses a polyester dip dyeing device and polyester fabric processed based on the dip dyeing device, and relates to the technical field of polyester fabric. The dip dyeing device comprises a dip dyeing box, a dip dyeing roller is rotatably installed in an inner cavity of the dip dyeing box, a power assembly is fixedly installed at the bottom of the inner cavity of the dip dyeing box and located below the dip dyeing roller, a guide box is fixedly installed at the top of the dip dyeing box, guide rollers are rotatably installed at the two ends of the guide box respectively, and the two guide rollers and the dip dyeing roller are rotatably installed. According to the dip-dyeing device, the power assembly is driven to repeatedly and continuously move up and down in the dye, so that dip-dyeing liquid in the dip-dyeing box flows, precipitation and condensation caused by long-time standing of the dye are avoided, the number of times of collision between pigment molecules in the dip-dyeing liquid and fabric on the surface of polyester fabric is increased, and the dyeing efficiency is improved. Therefore, the dip dyeing liquid can quickly dip the polyester fabric, and the problems that the polyester fabric is poor in dyeing effect and low in dip dyeing rate are solved.