51 results about "Pigment synthesis" patented technology

The invention discloses a toluidine red pigment for a building coating and a preparation method of the toluidine red pigment, and belongs to the technical field of pigment synthesis. The toluidine red pigment is prepared from the following raw materials in parts by weight: 75 to 85 parts of toluidine red pigment matrix, 5 to 10 parts of nano titanium dioxide, 2 to 5 parts of nano zinc oxide, 3 to 8 parts of organic silicon modifier and 1 to 3 parts of polysiloxane microcapsule. By optimizing pigment components and adopting efficient preparation processes such as ultrasonic assistance and a micro-channel reactor, the weather resistance, dispersity and stability of the toluidine red pigment for the building coating are remarkably improved, meanwhile, the generation energy consumption is reduced, and the production efficiency is improved.

The invention relates to the technical field of pigment synthesis, and particularly discloses a synthetic method of ornamental blue. According to the synthetic method, 5-hydroxy-3-iminopyridine-2, 6-diketone is adopted as a raw material, enol interconversion is performed on the raw material under the alkaline condition (under the action of an alkali catalyst), heating is performed, and chemical condensation reaction is performed to obtain the ornamental blue. The synthetic method of the ornamental blue provided by the invention is simple in process and high in reaction selectivity, the yield and purity of the product are high, the yield of the ornamental blue product is more than or equal to 80%, the purity of the ornamental blue product is more than 99%, the synthetic method has obvious advantages, no potential safety hazard exists in the process, and industrial production can be realized.

The invention discloses a preparation method of a high-temperature-resistant benzidine yellow pigment, and belongs to the technical field of pigment synthesis, and the high-temperature-resistant benzidine yellow pigment is prepared by diazotizing 3, 3 '-dichlorobenzidine, coupling the diazotized 3, 3'-dichlorobenzidine with a sulfonimide modified acetoacetanilide derivative to obtain a pigment compound, and finally compounding the obtained pigment compound with sulfanilamide group grafted polyethersulfone. According to the high-temperature-resistant benzidine yellow pigment prepared by the preparation method disclosed by the invention, the high-temperature-resistant performance of the benzidine yellow pigment is remarkably improved and the use performance of the benzidine yellow pigment is improved by introducing the sulfonimide group and the polyethersulfone grafted with the sulfanilamide group for synergistic modification.

The invention discloses a preparation method of a pigment for low-oil-absorption pigment red 57: 1 printing ink, and belongs to the technical field of pigment synthesis. 4-aminotoluene-3-sulfonic acid is diazotized and then coupled with 3-hydroxy-2-naphthoic acid, a carboxyl-terminated hyperbranched polymer and an ionic liquid are added into a pigment crude product compound obtained after the coupling reaction is completed, and the pigment for low-oil-absorption pigment red 57: 1 printing ink is obtained. And finally adding a calcium chloride aqueous solution for color lake. The pigment for low-oil-absorption pigment red 57: 1 printing ink, prepared by the invention, not only has lower oil absorption, but also has the advantages of strong tinting strength, easiness in dispersion and high stability, and has good processing and application performance.

The invention discloses a preparation method of prune exosomes and application of the prune exosomes in regulation and control of pigment metabolism and skin cell inflammatory response, and the preparation method comprises the following steps: taking prune, washing, peeling, dicing, juicing, adding a compound enzyme preparation, centrifuging at 2,000 g for 20 min, carrying out trehalose-assisted ultracentrifugation, centrifuging at 12,000 g for 30 min, centrifuging at 40,000 g for 60 min, centrifuging at 120,000 g for 70 min, collecting precipitate PBS, re-suspending, and filtering to obtain the high-purity prune exosomes. It is proved for the first time that the prune exosome dose-dependently inhibits the melanin content and tyrosinase activity in B16F10 melanoma cells, the mRNA expression level of key inflammatory factors TNF-alpha, IL-1beta and IL-6 in TNF-alpha-induced Hacat cells is remarkably reduced, in addition, the inhibition effect of melanin can be amplified through an STAT3 channel by combining the prune exosome with luteolin, and the application of the prune exosome to the preparation of the anti-inflammatory drug is promoted. The polypeptide can be used for preparing a preparation for regulating pigment anabolism and skin-related inflammatory response, and a potential biological application value is exerted.

The invention relates to an interferometric pigment comprising a layer of zinc sulfide-based material. The pigment advantageously comprises a low refractive index core and at least one high refractive index layer comprising zinc sulfide. The invention also proposes a method for synthesizing these pigments by non-homogeneously precipitating zinc sulfide on a powdered support, by adding a zinc salt solution to a reaction medium containing a dispersion of the powdered support, titrating a sodium sulfide solution having a fixed pH at a moderate temperature to obtain a precipitate. The invention also relates to cosmetic compositions comprising these interference pigments free of titanium dioxide, titanium dioxide being typically introduced as a filler or by providing a cosmetic ingredient containing titanium dioxide.

The invention relates to tobacco lipoxygenase NtLOX2 capable of regulating and controlling pigment synthesis and application of the tobacco lipoxygenase NtLOX2. The amino acid sequence of the tobacco lipoxygenase NtLOX2 is shown as SEQ ID No.1. The invention provides tobacco lipoxygenase NtLOX2 which is found to be highly related to the content of tobacco pigment, and after the gene is silenced, the content of the pigment in tobacco is obviously increased.

The present invention belongs to the technical field of organic pigment synthesis, and specifically relates to a preparation method and application of CI Pigment Yellow 183. By using 2-amino-4,5-dichlorobenzenesulfonic acid as a diazo component, using 1-(3'-sulfonate phenyl)-3-methyl-5-pyrazolone (3SPMP) and 1-(3'-sulfonate phenyl)-3-methyl-5-pyrazolone derivatives as coupling components, a long carbon chain alkyl is introduced into the pigment surface, thereby improving the tinting power, fluidity and dispersibility of CI Pigment Yellow 183.

The application discloses a preparation method of acid and alkali resistant toluidine red pigment, belongs to the technical field of pigment synthesis, and introduces di-primary amine on a modified toluidine red pigment, then reacts with a dicarboxylic compound, and finally is prepared through hydrolysis and self-assembly; the modified toluidine red pigment is prepared through the following steps that 3-amino-4-nitrobenzyl alcohol is diazotized and then coupled with 2-naphthol; the acid and alkali resistant toluidine red pigment prepared by the application not only has bright color and good hiding power, and also has high coloring strength, light resistance, water resistance, oil resistance and dispersibility, and simultaneously has strong acid and alkali resistance and environmental stability, and significantly improves the application performance of the pigment.

The invention relates to a paper for decorative coating materials, containing cellulosic fibres and synthetic fibres, the synthetic fibres containing at least one polymer and at least one pigment, and the mass ratio of pigment to polymer in the synthetic fibres being 1: 10 to 1: 1. Furthermore, the invention relates to a decorative paper or a decorative film containing the paper according to the invention, and to a method for producing the paper according to the invention, comprising the following steps: (a) providing a pulp mixture, (b) grinding the pulp mixture to a grinding degree of 10 to 45 DEG SR, (c) selectively adding a filler and a wet strength agent to the ground pulp mixture obtained in (b), (d) diluting the mixture obtained in (c), (e) selectively adding auxiliaries, (f) forming a fibrous non-woven fabric, (g) dewatering and drying the fibrous non-woven fabric to obtain the paper, in which synthetic fibers containing at least one polymer and at least one pigment are added after step (d) and before step (f), and in which the mass ratio of pigment to polymer is from 1: 10 to 1: 1.

The invention discloses a honeysuckle flower pigment synthesis gene and application thereof in regulating and controlling the content and resistance of plant anthocyanidin, and belongs to the technical field of gene engineering. The nucleotide sequence of the honeysuckle flower pigment synthesis gene is as shown in SEQ ID NO. 6. The invention provides a honeysuckle flower pigment synthesis gene. The gene has the effects of regulating and controlling the content of anthocyanidin in plants and regulating and controlling the stress resistance of the plants. The gene is introduced into a plant body by constructing an overexpression vector, so that the gene is stably overexpressed, the anthocyanidin content in the plant is remarkably increased, and the petal color and seed coat color of the plant are darkened; the resistance of the plant to drought stress and salt stress is also remarkably enhanced, so that the plant can adapt to a severe environment more easily, and a new gene resource and a theoretical support are provided for breeding of high-resistance plant varieties.

The invention relates to an interferometric pigment comprising a layer of zinc sulfide material. The pigment advantageously comprises a low refractive index core and at least one high refractive index layer comprising zinc sulfide. The invention also proposes a method for synthesizing these pigments by heterogeneously precipitating zinc sulfide on a powdered support by adding a zinc salt solution to a reaction medium containing a dispersion of the powdered support and titrating a sodium sulfide solution having a fixed pH at a moderate temperature to obtain a precipitate. The invention also relates to cosmetic compositions comprising these interference pigments free of titanium dioxide, wherein titanium dioxide is typically introduced as a filler or by providing a cosmetic ingredient containing titanium dioxide.

The invention relates to the technical field of pigment synthesis, in particular to a production process of pigment yellow 139, which comprises the following steps: 1) adding water into barbituric acid, fully dissolving at the temperature of 30-70 DEG C, adjusting the pH value to be less than or equal to 1.8 to form a supersaturated solution, keeping the temperature unchanged, adding 1, 3-diimino isoindoline solid or a mixed solution of the 1, 3-diimino isoindoline solid and the water for multiple times, and reacting the barbituric acid with the 1, 3-diimino isoindoline solid to obtain a mixture; the molar ratio of the 2, 3-diimino isoindoline to the 2, 3-diimino isoindoline is (2.5-4.5): 1, keeping the pH value of the system to be less than 7 in the adding process, and then keeping the temperature at 40-70 DEG 2) crude product separation: after the heat preservation reaction is finished, keeping the temperature of the mixed solution in the step 1) at 50 DEG C or above, and carrying out hot filtration to separate a pigment crude product; 3) pigmentation: adding water into the pigment crude product, preserving heat at 105-130 DEG C for pigmentation within 4-10 hours to obtain a pigment yellow 139 product; and 4) carrying out heating reduced pressure distillation treatment on the filtrate obtained by hot filtration separation in the step 2) to obtain a barbituric acid aqueous solution and ammonia water. The raw material utilization rate is improved.

This invention discloses a wheat blue-grain gene and its applications, belonging to the fields of plant molecular biology, biochemistry, genetics, and plant breeding. Using differential expression analysis between blue-grain and white-grain wheat, four genes controlling the blue-grain trait were identified: two MYB family transcription factors and two bHLH family transcription factors. Furthermore, plant recombinant expression vectors for these genes and a method for regulating anthocyanin synthesis in plants are provided. This has significant theoretical and practical implications for studying the aleurone layer pigment synthesis pathway in blue-grain wheat, its use as a screening marker in plant transformation processes, and improving the nutritional value of plants.

The present application discloses a toluidine red pigment for architectural coatings and a preparation method thereof, and belongs to the field of pigment synthesis technology. The toluidine red pigment is composed of the following raw materials: 75-85 parts by weight of toluidine red pigment matrix, 5-10 parts by weight of nano titanium dioxide, 2-5 parts by weight of nano zinc oxide, 3-8 parts by weight of organosilicon modifier and 1-3 parts by weight of polysiloxane microcapsules. The present application significantly improves the weather resistance, dispersibility and stability of toluidine red pigment for architectural coatings by optimizing the pigment composition and adopting efficient preparation processes such as ultrasonic assistance and microchannel reactors, while reducing the energy consumption of production and improving production efficiency.

The invention relates to a preparation method of a modified acid red 289 dye for photoresist, which is mainly used in the manufacture of an optical color filter of a color liquid crystal display, and comprises the following steps: (1) pigment synthesis: dissolving acid red 289 in methanol, adding concentrated hydrochloric acid for reaction, stirring, and filtering to obtain a pigment; converting a sulfonate group in a dye molecule into a sulfonic acid group, and after the reaction is finished, filtering and drying to obtain R289-H; (3) kneading treatment: adding the R289-H obtained in the step (1), an inorganic salt, a solvent, the resin obtained in the step (2) and an auxiliary agent into a kneading machine, carrying out a kneading reaction, and after the reaction is finished, washing and drying to obtain the modified acid red 289 dye for the photoresist. According to the invention, the problem that acid red 289 is difficult to dissolve in propylene glycol methyl ether acetate is solved, and the chromaticity and contrast of the modified dye are further improved.

The application discloses a kind of acid and alkali resistant pigment red 57:1 for ink and a preparation method thereof, and belongs to the technical field of pigment synthesis, which is composed of 5~10 parts of block polymer and 70~100 parts of pigment red 57:1 by weight; The block polymer is a block polymer with a main chain containing a vinyl structural unit, a side chain with a carboxyl group / amino group and a phenyl group, and a phenyl group at the end; The acid and alkali resistant pigment red 57:1 for ink prepared by the application, while maintaining the original bright color of the pigment and the advantages of high color strength, by introducing a hydrophilic core rich in carboxyl and amino groups, and matching a hydrophobic shell, the stability of the pigment in strong acid and strong alkali environment is improved, and has a broader application prospect.

The utility model discloses a photosynthetic bacteria preparation fermentation tank, and belongs to the technical field of microbial fermentation. Comprising a tank body which is connected with a first light source system and a second light source system; the first light source system comprises a plurality of glass tubes, one end of each glass tube is of a closed structure, and the other end is of an open structure; the plurality of glass tubes are horizontally and uniformly distributed on the side wall of the tank body, the closed ends of the glass tubes extend into the tank body, and the open ends of the glass tubes are arranged outside the tank body; a light source and a heat dissipation structure are arranged in the glass tube; the second light source system is arranged inside the top of the tank body; an annular gas disperser is arranged at the bottom of the tank body; according to the utility model, a two-step photosynthetic bacteria fermentation process can be realized, namely the number of bacteria is quickly increased in the early stage, and photosynthetic bacteria pigment synthesis is promoted in the later stage; the problem that the fermentation efficiency is low due to the fact that the temperature in the photosynthetic bacteria fermentation tank is not easy to control and the illumination intensity is affected is solved.

The invention discloses a red pigment, a preparation method thereof and a red pigment dispersion liquid, the preparation method comprises the following steps: (1) preparing a copper-based catalyst: carrying out partial reduction calcination treatment on Cu2O powder in a reducing atmosphere which contains H2 to obtain the copper-based catalyst rich in oxygen vacancies; (2) mixing bromamine acid or salt thereof, the copper-based catalyst prepared in the step (1) and a solvent; (3) adding acid into the mixture obtained in the step (2), and carrying out condensation reaction; and (4) after the reaction is finished, carrying out post-treatment to obtain the red pigment. Through cooperation of the copper-based catalyst rich in oxygen vacancies and the process, the comprehensive technical effects that the synthesis reaction rate of the red pigment is remarkably increased, the particle size of primary particles is reduced, the primary particles are uniformly distributed, and the contrast ratio and dispersion stability in the optical filter are comprehensively improved are achieved.

A modified organic pigment can be used to make a coating composition, such as a paint, a varnish, or a printing ink. The modified organic pigment is obtained by reacting the pigments during the pigment synthesis with one interface-active compound, where the interface-active compound is a compound within a three-dimensional Hansen space determined by three coordinates, Hansen solubility parameters (HSPs), D=18.21, P=8.44, H=13.16 with a radius of 6.7 units about a center of the three-dimensional Hansen space, determined with the aid of the HSPiP software, version 5.0.0.4.

The invention relates to the technical field of pigment synthesis, and particularly discloses a 5, 5 '-dihydroxy bipyridine monoester blue pigment as well as a preparation method and application thereof. The 5, 5 '-dihydroxy bipyridine monoester blue pigment provided by the invention increases the solubility of pigment molecules in an ester-soluble solvent, also shows certain solubility in water, is expected to be used as dye molecules in the fields of printing and dyeing, spinning and the like subsequently, can also be used as an intermediate to complete synthesis of other derivatives, and has great application prospects.

The invention discloses an easily dispersible toluidine red pigment and a preparation method thereof, belonging to the technical field of pigment synthesis. The pigment comprises the following raw materials, measured in parts by weight: 1-2 parts of toluidine red and 0.3-0.5 parts of a polyamide polymer grafted with cyclodextrin; the polyamide polymer grafted with cyclodextrin is prepared by grafting cyclodextrin onto a tri-terminal carboxyl compound, performing a quaternization reaction, and finally reacting with hexamethylenediamine. The easily dispersible toluidine red pigment prepared by the invention has stable dispersibility, high tinting strength and weather resistance, and effectively improves its application effect in the fields of coatings and the like.

The invention discloses a method for preparing a low oil absorption pigment red 57:1 ink pigment, which belongs to the technical field of pigment synthesis. After 4-aminotoluene-3-sulfonic acid is diazotized, it is coupled with 3-hydroxy-2-naphthoic acid, and a carboxyl-terminated hyperbranched polymer and an ionic liquid are added to the crude pigment compound obtained by the coupling reaction, and finally a calcium chloride aqueous solution is added for color lake formation. The low oil absorption pigment red 57:1 ink pigment prepared by the invention not only has a low oil absorption, but also has the advantages of strong tinting power, easy dispersion and high stability, and has good processing and application performance.

This invention belongs to the field of pharmaceutical technology, specifically relating to the application of XBD-173 or its pharmaceutically acceptable salts in the preparation of remedies for treating and / or preventing depigmentation diseases caused by pigment synthesis disorders, particularly in the preparation of remedies for treating and / or preventing vitiligo, leukoderma, pityriasis alba, and albinism. Experiments have shown that XBD-173 can significantly increase melanin synthesis and promote repigmentation in the dorsal lesions of vitiligo mice, while exhibiting no significant toxicity. In summary, XBD-173 has a clear mechanism of action, significant effects, and no significant side effects, demonstrating significant advantages and advancements compared to existing drugs.

The invention provides application of pyrrolimidazole in development of a CrtN enzyme inhibitor, and a CrtN enzyme activity test, a growth curve, pigment yield determination, a hydrogen peroxide killing test, a whole blood killing test and a mouse skin scald infection test prove that pyrrolimidazole can inhibit the activity of the CrtN enzyme, reduce the anti-oxidation removal capability of staphylococcus aureus and inhibit the growth of the CrtN enzyme. The protection effect of a staphylococcus aureus skin infection model is improved. Therefore, as a potential staphylococcus aureus pigment synthesis inhibitor, the depyrrolimidazole can reduce the oxidative stress resistance of staphylococcus aureus by inhibiting the activity of the CrtN enzyme, and has important significance for clinically developing safe and effective antioxidant adjuvants.

The invention belongs to the technical field of pigment synthesis, and particularly relates to a method for synthesizing a high-performance azo pigment through continuous flow, in particular to a method for synthesizing the high-performance azo pigment through a continuous flow production device. The continuous flow production device comprises three pipeline reactors which are sequentially connected in series; the method for synthesizing the high-performance azo pigment through the continuous flow comprises the following steps: S1, carrying out continuous diazotization reaction on a sodium nitrite solution and a diazo component dispersion in a first pipeline reactor; s2, carrying out continuous coupling reaction in a second pipeline reactor; and S3, pigmentation treatment is carried out in the third pipeline reactor. The pipeline reactor is used for continuous synthesis, the pigment product can be directly obtained, an intermediate product storage tank is not needed, and continuous production in the true sense is achieved; the front-section mixing device can ensure the overall mixing effect, and the particle size of the pigment is uniform; the pipeline of the delayed reaction area is enlarged, so that the unit flux is larger, the yield is higher, and the economic benefit is better.

The utility model relates to the field of chemical substances, and provides a zinc phosphate wrapped heat-resistant iron oxide yellow pigment synthesis device which comprises a box body, a second shell is fixedly connected to the bottom end of the inner wall of the box body, a first shell is movably connected to the top end of the second shell, a rotating rod is installed at the top end of the first shell, and a rotating shaft is installed at the top end of the rotating rod. A stirring assembly is arranged in the first shell, a reaction kettle is fixedly connected to the interior of the second shell, a heating block is installed on the outer side of the reaction kettle, a box body is fixedly connected to the bottom end of the box body, and a lifting wheel assembly is arranged in the box body. According to the technical scheme, the materials are stirred through the stirring assembly, and the problem that the reaction effect between the materials is possibly poor due to material deposition in the synthesis process is solved.

The invention discloses a rapid screening method of a pigment high-yield strain, and belongs to the field of pigment synthesis. According to the technical scheme, the method comprises the steps that Raman spectrums of a plurality of pigment high-yield strains serve as a training set, and a deep learning model based on an out of distribution algorithm is constructed; determining the category of a sorted target pigment, after the target pigment is identified by the classification model, setting a sorting threshold value by using the intensity difference value of Raman peaks, carrying out flow type Raman detection on a mutant library to be screened, calculating the Raman spectrum characteristic peak difference value of the Raman spectrum judged as the target pigment in real time, and comparing the Raman spectrum characteristic peak difference value with the sorting threshold value. The cells with the characteristic peak difference value larger than the threshold value are sorted and collected. The method is applied to rapid screening of the high-yield pigment strains, solves the problems of low screening efficiency and poor screening precision of the existing high-yield pigment strain screening technology, and has the characteristics of high throughput and high screening precision.

The invention discloses a toluidine red pigment for architectural coatings and a preparation method thereof, belonging to the technical field of pigment synthesis. Adamantane is introduced into toluidine red, and the adamantane has a stable cage structure, thereby increasing the water resistance and acid and alkali resistance of the pigment; in addition, the weather resistance and thermal stability of the pigment can be improved, thereby increasing the durability of the toluidine red pigment for architectural coatings in outdoor environments; a cyclodextrin-modified resin can form a stable host-guest complex with the adamantane-modified pigment through self-assembly, thereby increasing the dispersibility and hiding power of the pigment, thereby increasing the stability and construction performance of the pigment; and the invention has good application prospects in the field of architecture.

The invention relates to the technical field of biological environment engineering, and provides a fucoxanthin synthesis optimization method and system based on reinforcement learning, and the method comprises the following steps: a real-time data acquisition system; constructing a state space; a deep reinforcement learning decision network; optimizing a dynamic strategy; and strategy verification is linked with the process. Through a light quality-stimulant collaborative reinforcement learning regulation strategy, the static operation limitation of a traditional process is broken through, the photosynthetic physiological state of microalgae is perceived in real time, the light environment and chemical signals are dynamically optimized, the fucoxanthin synthesis efficiency is remarkably improved, and a multi-omics closed-loop verification mechanism is combined, so that the fucoxanthin synthesis efficiency is improved. The molecular cascade effect of a light signal driving pigment synthesis pathway is illuminated, and a precise target spot is provided for metabolic engineering transformation.