134 results about "Pigment molecule" patented technology

Radiation curable compositions, such as UV curable ink compositions, contain a polymeric dispersant, a curable material, that includes a carrier and at least one nanoscale fluorescent pigment particle and an optional non-fluorescent colorant. The fluorescent organic nanoparticle composition includes one or more fluorescent dyes dispersed in a polymeric matrix obtained by modified EA latex process or by emulsion polymerization. In a different embodiment, the nanoscale fluorescent pigment particle composition includes pigment molecules with at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.

A fluorescent imaging method of the changes in viability of living bodies wherein the living bodies are provided with a chemical or physical exterior stimulation and information on the changes in viability of cells caused by the stimulation is obtained by means of a fluorescent imaging method of the saccharide uptake activity by contacting or administering to the living bodies an aqueous solution of a fluorescent saccharide compound which includes at its specific position a saccharide molecule chemically combined with a fluorescent pigment molecule.

The invention discloses a high temperature printing and dyeing color stripping processing method of polyester fiber, which adopts a heating processing equipment with routine color stripping process. The utility model is characterized in that the polyester fiber with dyeing speck is heated and processed through aqueous solution which includes main color stripping agent, penetrating agent, swelling agent, and reducing agent. The four components of the main color stripping agent, the penetrating agent, the swelling agent and the reducing agent in the high temperature printing and dyeing color stripping processing method of the polyester fiber of the invention all play respective certain function and cooperate mutually, in particular, the decomposition effect to the pigment molecule and the expanding effect to the polyester fiber are enhanced simultaneously, the enhancement effect is obvious, and the invention is favorable to the main color stripping agent to effectively contact and dissolve pigment molecules which penetrate into the inner part of the fiber with the help of the penetrating agent. Therefore, compared with the traditional color stripping processing method, the invention is more suitable for the color stripping processing of the dispersed dyes with stronger binding power on the high temperature printing and dyeing polyester fiber.

The objective of the present invention is to provide a liquid crystal display device for displaying colors by transmission and reflection modes and a method for producing such devices, whereby the additive color mixing can be used, the structure is simplified, the driving-voltage is lower, the contrast is higher, the response speed is higher, and the screen can be larger. This objective can be achieved by a method including the following steps: mixing 0.001 to 20 wt % of dichromatic melanotic pigment into chiral nematic liquid crystal mixed with chiral dopant; preparing a mixture of the liquid crystal and prepolymer to be polymerized into transparent polymeric solid; inserting the mixture into the space between two conductive substrates, wherein at least one of which is transparent; and irradiating ultra-violet light or neighboring short-wavelength light onto the mixture. This process creates an accumulation of small packets composed of the liquid crystal packed with a thin film of the transparent polymeric solid within a light-controlling layer between the two conductive substrates. When no voltage is applied, the pigment molecules absorb light because they are distributed within the space with their longitudinal axis randomly directed. When a voltage is applied, elongated liquid crystal molecules are oriented perpendicular to the substrates, and the pigment molecules are also oriented in a similar manner. In this state, the black color of the pigment molecules does not appear, so that light is allowed to pass therethrough.

The preparation method of colcothar includes the following steps: (1) wet surface treatment; utilizing some substance which have the properties of dilatancy, dispersibility, suspendability and lubricity in the water and adding them into the undried slurry material is colcothar so as to make the percipitability and agglomeration property of the easy-precipitated colcothar after which is dried obtain improvement; and (2) dry surface treatment; adding dry surface treatment agent to the dried powder and making it uniformly cover the surface of pigment molecule, so that it not only has the moistening action, but also can produce lubricating action. Said invention can make the colcothar have good fineness value and smaller apparent density, and have better flowability and high dyeing ability.

The invention discloses a production method of a dye-sensitized TiO2 film based gas sensor. The method comprises steps of: choosing a substrate suitable for subsequent film plating; preparing electrodes on the substrate through a film plating method; preparing a nanocrystalline TiO2 film on the substrate with electrodes by a magnetron sputtering method; selecting a suitable dye sensitizing material according to gas to be tested and dissolving the dye sensitizing material in a compatible solvent to prepare a dye solution; immersing the nanocrystalline TiO2 film into the dye solution for 12-8 h; taking out the nanocrystalline TiO2 film; removing impurities with ethanol; and drying and baking in an oven at 30-80 DEG C for 1-5 h. According to the invention, the nanocrystalline TiO2 film is employed as the substrate material, and the dye sensitizing material is employed as a sharpening material; dye molecules encapsulate the TiO2 molecules while filling gaps between the TiO2 crystals; and the gas sensor can be used for qualitative and quantitative analysis on gas at room temperature through changes of the sensor resistance, and has high sensitivity and wide detection range.

The present invention provides a structure in which the surface of a solid substrate of any shape is covered with metal oxide, in particular, a nanostructure composite in which polyethyleneimine, which is an organic substance, and metal oxide, which is an inorganic substance, are combined in nano-meter scale, spreads at the entire surface of a substrate, and the nanostructure composite forms a nano-boundary of complex shapes so as to thoroughly cover the entire surface of the substrate; a structure in which metal ions, metal nano-particles, organic pigment molecules are contained in the nanostructure composite; a process for producing these structures which can produce these structures with ease and efficiently; and an application method for the structures as an immobilized catalyst type reactor.

The invention discloses a method for making a gas sensor based on a natural color-sensitive material and a porous TiO2 film. The method comprises the steps of: selecting a substrate suitable for being coated, making an electrode on the substrate with a coating method, and preparing the porous TiO2 film for the substrate coated with the electrode with a sol-gel method; specific to gas to be detected, selecting a proper natural color-sensitive material, and dissolving the natural color-sensitive material into a solvent compatible with the natural color-sensitive material to form a natural color-sensitive material solution with the concentration of 0.1-0.5mol / L; and soaking the porous TiO2 film into the natural color-sensitive material solution for 12-48 hours, taking out the porous TiO2 film, washing the porous TiO2 film with absolute ethyl alcohol completely to remove impurities, airing, and drying in a drying oven at 30-80 DEG C for 1-5 hours. The prepared sensor is higher in sensitivity and wider in detection range, can work at room temperature, is safe and nonhazardous, and is slightly influenced by ambient humidity because pigment molecules wrap TiO2 molecules and fill gaps among TiO2 crystals at the same time.

The invention discloses a preparation method and application of modified composite pigment yellow, and relates to the technical field of fine chemical engineering. For the shortcomings of an existingorganic pigment, the organic pigment is compositely modified by adopting an inorganic core covering and surfactant treatment combined measure. According to the preparation method disclosed by the invention, positively charged ferric hydroxide colloid is used as an inorganic core; organic pigment molecules are well adsorbed around the inorganic core by using mutual attraction of positive and negative charges and the high adsorption performance of the surface of the colloid, so as to realize primary modification; then the ferric hydroxide colloid is converted into transparent iron yellow alpha-FeOOH through a catalyst PdCl2, so as to realize secondary modification of the organic pigment under the action of methylene sodium dinaphthalene sulfonate and lauryl sodium sulfate.

The invention discloses a novel method for preparing embeddings, which comprises the following steps: placing ferritin solution in a centrifuge tube, adjusting the pH value with sodium hydroxide solution to denature, and stirring; taking natural pigments and dissolving them in ethanol Solution: mix the polyphenol ethanol solution with the above-mentioned ferritin solution, stir at room temperature, adjust the pH value for renaturation, stir in a chromatographic cabinet at 4°C, and dialyze the above-mentioned solution three times to obtain the ferritin natural pigment embedding. Then, the ferritin pigment embedding material and chitosan were mixed in a certain proportion, stirred, statically prepared, and dialyzed in a chromatographic cabinet at 4°C in the dark to obtain the final product. The final product is a new type of embedding material loaded with natural pigment molecules by ferritin / chitosan, which can be used as a new food additive, can also be used to improve medical efficacy, and can also be used as a component in cosmetics, embedding material Ferritin and natural pigments produced after decomposition also have certain biological activity. This product makes full use of the functions of ferritin and natural pigment, and has high practical application and promotion value.

The invention provides a pigment dispersion liquid preparation method. The method includes: taking a covalent organic framework material with a network structure as a template, and crystallizing pigment molecules, in a solution form, in the network structure of the covalent organic framework material, so that the pigment crystal grain size can be controlled by the mesh size of the network structure of the covalent organic framework material; after complete pigment crystallization, separating out pigment crystals from the covalent organic framework material by means of brine washing, and addinga surfactant, so that high-dispersity and uniform-particle-size pigment dispersion liquid can be obtained. The pigment dispersion liquid subjected to aftertreatment can be used for preparation of color photoresist and is a high-performance pigment capable of realizing high penetrativity and high contrast of display products, and the covalent organic framework material is recyclable.

The invention relates to the technical field of water treatment, in particular to a magnetic decoloration material and a preparation method and application thereof. By means of the characteristic that most sewage pigment has negative charge, surface modification is carried out on an iron magnetic material, quaternary ammonium salt, quaternary phosphonium salt and quaternary arsonium salt with different carbon chain lengths are grafted to the surface of the iron magnetic material, and therefore pigment molecules dispersed in water are adsorbed and enriched. After pigment is completely adsorbed to the surface of the magnetic material, a high-gradient magnetic field is used for rapidly separating iron magnetic particles with pigment molecules adsorbed from sewage, and high-chroma sewage is decolored; the magnetic particles with the pigment molecules adsorbed are appropriately eluted so as to recycle magnetic materials, and meanwhile the pigment molecules are concentrated; finally, the concentrated pigment molecules are incinerated at high temperature or decomposed trough microwaves to achieve harmless treatment. The method is simple, reliable and low in energy consumption, the magnetic particles can be repeatedly utilized, and harmless treatment of poisonous and harmful pigment can be achieved. The magnetic decoloration material can be used for decoloring coking sewage and dyeing sewage before drainage.

The invention relates to a method for separating pigment molecules from hirudin fermentation broth and belongs to separation and purification of biological medicine. The method comprises steps as follows: a hydrophobic chromatographic packing material is added to the hirudin fermentation broth for adsorption, and after adsorbed precipitates are eluted, hirudin protein of separated pigment molecules is obtained. The whole adsorption and elution process is simple to operate, a certain purification effect is achieved while pigment is separated, and the recovery rate of the hirudin protein can reach 70%.

The invention provides a plant pigment hair coloring agent, a preparation method and a use method thereof. The plant pigment hair coloring agent, which comprises an agent A and an agent B, wherein theagent A comprises a plant penetrant extraction liquid, a softener, an oil phase, a preservative, an alkali agent and water, the agent B comprises a plant penetrant extraction liquid, a plant pigmentextraction liquid, a ferrous salt, an antioxidant, an oil phase, a preservative and water, the agent A is used for opening the hair keratin scales, and the agent B is used for dyeing with the plant pigment. According to the present invention, the mixed plant penetrants are respectively added to the agent A and the agent B, such that the softener or the plant pigment molecule is promoted to penetrate into the deep positions of the hair scales so as to achieve the firm and lasting dyeing; the plant pigment hair coloring agent has advantages of easy dyeing, lasting and stable hair color fixation,no fading, no toxicity and no irritating to the skin; and with the plant pigment hair coloring agent, only two coating and one washing are required to be performed during the hair coloring, such thatthe process is simple and rapid, and the plant pigment hair coloring agent is the real plant hair coloring product.

The invention relates to the pigment field, and discloses a preparation method of a corrosion resisting UV aging resistant coating modified aluminum pigment. The preparation method comprises followingsteps: utilizing a sol-gel method to prepare SiO2 coated Al particles, then utilizing a silane coupling agent to modify active hydroxyl groups on the surface of SiO2 coated Al powder to synthesize Al / SiO2 / silane coupling agent composite particles with an amino containing surface; then reacting part of amino groups with 2-bromoisobutyryl bromide to synthesize a composite particle initiator with bromine terminals, adjusting the ratio of composite to pigment molecules, carrying out substitution reactions between the other part of amino groups and melamine dye molecules to anchor the pigment molecules onto the surface of SiO2 particles, and finally generating the polymer coating aluminum pigment (Al / SiO2 / silane coupling agent / Br / dye / polymer) with a core-shell structure by an atom transfer radical polymerization method. The provided preparation method effectively improves the comprehensive performances of the aluminum pigment such as alkali resistance, acid resistance, UV resistance, and the like.

The invention discloses a preparation method of microencapsulated gardenia yellow pigment. The method comprises the following steps: (1) aqueous phase preparation: mixing an emulsifier, maltodextrin and a gardenia yellow pigment of the color value of 200, completely dissolving a mixture with water for serving as an aqueous phase; (2) oil phase preparation: uniformly mixing soybean oil or maize germ oil under 50 to 60 DEG C, and completely dissolving to serve as an oil phase; (3) emulsification: slowly adding the oil phase into water, and cutting by using a high-speed shearing machine, so that the emulsifier is embedded by the oil phase and pigment molecules, and after the pigment is embedded in a wall material and exists stably, homogenizing the material at high pressure in a homogenizer for 3 to 4 times; (4) spray drying: performing spray drying on an obtained emulsion, and then obtaining the microencapsulated gardenia yellow pigment, wherein the color value of the obtained pigment is 18 to 20, and the pigment embedment rate is 92 percent to 96 percent. By applying the pigment prepared by the preparation method to rice and noodles or fried food, the pigment can be slowly released, better high-temperature resistance is achieved, the pigmentation effect is better, and an application range of the gardenia yellow pigment is enlarged.

The invention discloses a water-based color ink-jet printing medium and a production method thereof. The water-based color ink-jet printing medium comprises a base material, wherein the base material is already subjected to corona treatment, at least one surface of the base material is coated with a base layer and an ink absorption layer, and the ink absorption layer contains an amphoteric star polymer. The water-based color ink-jet printing medium disclosed by the invention can be used for effectively improving the interaction of dye and pigment molecules which are contained in the ink absorption layer and ink, increasing the cohesive force of the ink absorption layer and enhancing the printing color density and the water resistant property by applying the amphoteric star polymer to a color ink-jet printing medium.

The invention provides art pigment high in gloss and tinctorial yield. The art pigment is prepared from, by weight, 70-80 parts of pigment powder, 50-60 parts of vegetable glue, 2-4 parts of a non-ionic surface active agent, 1-3 parts of a brightening agent, 2-4 parts of a corrosion remover, 8-12 parts of talcum powder, 3-5 parts of sodium alga acid, 60-80 parts of distilled water and 5-10 parts of polyvinyl alcohol. The invention further provides a preparation method. The added non-ionic surface active agent is absorbed on surfaces of small pigment molecules through intermolecular forces playing a dispersion effect, pigmenting property of the pigment is improved, gloss of the pigment can be effectively improved by adding the brightening agent, and the prepared art pigment is bright in color, good in tinctorial strength, and high in quality of paintings.

The invention provides a magnetic heteroporous covalent nano material and a preparation method and application thereof. The magnetic heteroporous covalent nano material is prepared by synthesizing a silicon-coated magnetic composite material by hydrolysis polymerization reaction on the surface of magnetic nano particles through a silanization reagent, and performing amino bonding reaction on the magnetic composite material and a covalent organic framework. The magnetic heteroporous covalent nano material is a circular core-shell structure, and the covalent organic framework bonded on the outerlayer of the core-shell structure is a hexagonal structure. The magnetic heteroporous covalent nano material has two pore sizes and has good adsorption capacity for pigment molecules in food and agricultural products. The detection and analysis of pesticide residue content in food and agricultural products samples can be carried out by combining liquid chromatography or mass spectrometry analysistechnology, thus realizing full recovery of chemical hazard factors.

The invention discloses a preparation method of an adhesive-free polymerized colorful emulsion particles used for inkjet printing, and belongs to the technical field of fine chemical engineering and material scientific. According to the preparation method, a pigment is modified so as to introduce carbon-carbon double bonds, copolymerization cladding with a monomer with film forming performance iscarried out so as to obtain ultrafine cladded pigment molecules; and the ultrafine cladded pigment molecules, a water soluble cosolvent, and a surfactant are prepared into the pigment ink used for inkjet printing. The pigment is subjected to polymerization after modification, so that the ink stability and durability are better, the pigment surface monomer possesses certain film forming performance, so that the color fastness of obtained printed fabric is improved.

The invention provides a colored membrane substrate and a display device. The colored membrane substrate comprises a lining substrate, black matrixes and a plurality of color-resistant blocks, wherein the black matrixes are arranged on the lining substrate; the color-resistant blocks are arranged on the lining substrate and are partitioned by the black matrixes; the color-resistant blocks comprise porous support layers and a color-resistant material dispersed in the porous support layers; the color-resistant material comprises pigment molecules; a plurality of pores are formed in the porous support layers; and the size of each pore is greater than that of each pigment molecule. Therefore, dispersion and support of the pigment molecules can be effectively achieved, so that the contents of non-pigment components such as a dispersing agent and resin in the color-resistant material are reduced, the content of pigment components is increased, the light filtering capacity of unit membrane thickness of the color-resistant blocks is increased, the purpose of thinning the colored membrane substrate is achieved, and relatively high pixel density can be achieved. The display device provided by the invention comprises the colored membrane substrate and has the advantages of wide color gamut, small thickness, high brightness and the like.

The invention discloses an industrial production method of pigment yellow 97, and belongs to the technical field of fine chemical engineering synthesis. The industrial production method comprises the following steps: using 4-amino-2,5-dimethoxy sulfonamide as a raw material, performing acid treatment, then performing diazotization reaction under a low temperature condition, conducting a coupling reaction with 4-chloro-2,5-dimethoxy sulfonamide acidified with a mixing additive, and then using alkali to perform molecular recrystallization treatment to synthesize the high-performance pigment yellow 97. With application of the technology, reverse acidification, post-treatment and the addition of alkali are used to adjust the strong basicity to provide the strong base condition for the reaction, so as to break the bonds among the molecules which are partially and irregularly gathered during the coupling process, enable the pigment molecules to be recombined, enable the molecular crystal forms to be more regular and uniform. Therefore, the pigment properties can be improved, the acid resistance is up to level 6 above, the alkali resistance is up to level 7 above, the weather resistance is up to level 8 above, and the heat-resistance temperature is 230 DEG C.

The invention relates to the technical field of nanorods, in particular to a gold nanorod. The gold nanorod is prepared from raw materials of a coating agent, and the coating agent is one of dodecyltrimethylammonium bromide, N-dodecyl-N-2-hydroxyethyl-N,N-dimethyl ammonium bromide, N-dodecyl-N,N-dihydroxyethyl-N-methyl ammonium bromide. The invention further discloses a preparation method and application of the nanorod. Three novel cationic surfactants are provided to serve as the coating agent to prepare the gold nanorod, the obtained gold nanorod with the positive charge and pigment molecules with the negative charge achieve an electrostatic adsorption effect, detection of pigment molecules is facilitated, and the nanorod serves as a surface-enhanced Raman spectrum substrate material tobe used for detection of the pigment molecules, and has the advantages of weak background signal intensity, high sensitivity, high reproducibility and the like.

The invention provides a hierarchical different-pore covalent organic framework material, a preparation method and application thereof. According to the invention, a composite material is prepared through the physical coating effect of a different-pore covalent organic framework and a metal organic framework, and takes the metal organic framework as a sacrificial template, and the metal organic framework is dissolved with a dissolving agent to synthesize the hierarchical heterogeneous covalent organic skeleton material; the hierarchical heterogeneous covalent organic framework material has excellent rapid purification ability on pigment molecules in food and agricultural products; and the pesticide residue content of food and agricultural product samples is detected and analyzed by combining a liquid chromatography or mass spectrometry analysis technology, so that the chemical hazard factors can be completely recycled.

A novel IL-betaCD-RGO compound is synthesized through functionally reducing graphene oxide through in situ thermal reduction of graphite oxide by using an ionic liquid (IL) in the presence of betacyclodextrin. The dispersed RGO has good dispersion; and compared with betaCD individually functionalized RGO, the novel IL-betaCD-RGO compound has the advantages of obviously better dispersion of the RGO in water and substantially improved integral electric conductivity due to the introduction of the IL. The method is simple to operate, and is mild and green. The IL-betaCD-RGO compound combines the large specific surface area of the RGO, the high electric conductivity of the IL and the clathration effect of the betaCD on sunset yellow pigment molecules. A dispersion of the compound is dispensed on the surface of a glassy carbon electrode to produce an IL-betaCD-RGO compound modified glassy carbon electrode, so the dispersion is successfully applied to electrochemical detection of the dispensing in the food.

The invention discloses a method for quickly detecting a protein residue on a fabric. The method for quickly detecting the protein residue on the fabric comprises the steps of (1) preparing an aqueous solution containing pigment molecules or a suspension solution containing colored particles; (2) immersing the fabric with the protein residue into the aqueous solution or the suspension solution prepared in the step (1) and enabling the protein to be absorbed by the pigment molecules or the colored particles, wherein the time for immersing lasts for 1 second-20 minutes. Due to the adoption of the principle that an absorption property of a fabric part with the residue protein and absorption properties of other parts of the fabric on the pigment molecules or the colored particles, reasonable process and immersion time are controlled, so that quick detection of protein residues on the fabric is realized; a color development reagent used in the method is common and easily-available and has no harm to the human body; the method is simple and convenient to operate, high in color-developing speed and capable of easily developing colors and easily judging through naked eyes.

A sample is supplied onto the sensor portion of a sensor chip. An excitation light beam is irradiated to generate an enhanced optical field to be generated on the sensor portion. Fluorescent labels are excited, and the amount of a detection target substance is detected, based on the amount of light which is generated due to excitation of the fluorescent labels. A first electric charge is present on the surface of the sensor portion. A fluorescent substance having fluorescent pigment molecules which are enveloped in a light transmitting material that transmits fluorescence generated by the fluorescent pigment molecules, the surfaces of which are charged with second electric charges opposite the first electric charge on the surface are employed as the fluorescent labels. The fluorescent substance is attracted to the sensor portion by static electric interactions between the two charges.