578 results about "Hydroxymethyl" patented technology

The invention relates to the technical field of biological detection, and discloses a mycoplasma pneumoniae nucleic acid rapid detection method, which comprises the following steps: mixing a sample to be detected with a multifunctional pretreatment buffer solution containing tris (hydroxymethyl) aminomethane, potassium acetate, polyethylene glycol, saponin, spermine tetrahydrochloride and tris (2-carboxyethyl) phosphine hydrochloride, and carrying out cracking treatment; a cracking mixed solution is obtained; redissolving the enzymatic isothermal amplification basic reagent, the specific primer and the probe to obtain a redissolving amplification system; sucking the supernatant of the cracking mixed solution, adding the supernatant into a redissolving amplification system, and adding a magnesium acetate solution to obtain a reaction mixed solution to be detected; and carrying out isothermal amplification and signal acquisition to obtain a detection conclusion. The multifunctional pretreatment buffer solution is used for cracking the to-be-detected sample, sample liquefaction, cracking and nucleic acid release are completed in a single system, the nucleic acid extraction and purification step of centrifugal column adsorption or magnetic bead elution is avoided, and the operation process is simplified.

The invention discloses a preserving fluid for stably preserving sample DNA at normal temperature and a preparation method thereof, and belongs to the technical field of biological sample preservation. The preserving fluid comprises a lysis system, a nucleic acid protection system and a buffering and stabilizing system, the cracking system comprises a composite surfactant and an enzymolysis auxiliary agent; the composite surface active agent is prepared from polyether polyol fatty acid ester and cocamidopropyl hydroxy sulfobetaine; the enzymolysis auxiliary agent comprises lysozyme Lyso-V and protease K; the nucleic acid protection system comprises a nitrogen heterocyclic polyamine-carboxylic acid derivative and dextran sulfate; the nitrogen heterocyclic polyamine-carboxylic acid derivative comprises 1, 4, 7, 10-tetraazacyclododecane-N, N ', N' ', N ''tetraacetic acid, 1, 4, 7-triazacyclononane-N, N', N''-triacetic acid, disodium ethylene diamine tetraacetate-nitrogen heterocyclic derivative, and diethylenetriamine pentaacetic acid-piperazine derivative, and the nitrogen heterocyclic polyamine-carboxylic acid derivative comprises 1, 4, 7, 10-tetraazacyclododecane-N, N ', N '', N'' tetraacetic acid, 1, 4, 7-triazacyclononane-N, N', N ''-triacetic acid. The buffering and stabilizing system comprises an amphoteric buffering agent and a polymer stabilizer; the amphoteric buffering agent comprises 2-(N-morpholino) ethanesulfonic acid and N-tri (hydroxymethyl) methylglycine.

The present application relates to a kind of phosphine oxy group covalent modification composite adsorption material and its preparation method and purposes, the preparation method includes the following steps: (1) mixing dopamine hydrochloride, phosphine-containing substrate, tris-hydroxymethyl aminomethane hydrochloride and sodium hydroxide in solvent, to obtain mixed solution;(2) the mixed solution obtained in step (1) and solid phase material are mixed, then oscillation reaction is carried out, to obtain solid-liquid mixture;(3) the solid-liquid mixture obtained in step (2) is carried out solid-liquid separation, and the solid phase part obtained is sequentially washed and dried, to obtain phosphine oxy group covalent modification composite adsorption material.The phosphine oxy group covalent modification composite adsorption material provided by the present application has excellent adsorption selectivity and material stability, and can be used for the high-selectivity separation and recovery of rare metals indium and gallium.

The invention relates to the technical field of cables, and provides a corrosion-resistant control cable and a preparation method thereof. The corrosion-resistant control cable sequentially comprises a conductor, an insulating layer, a shielding layer and a sheath layer from inside to outside, wherein the sheath layer comprises the following components in parts by weight: 50-70 parts of polyvinyl chloride, 15-25 parts of ethylene propylene diene monomer, 10-20 parts of modified graphene oxide, 0.5-1.5 parts of an antioxidant, 3-5 parts of a plasticizer, 15-20 parts of a flame retardant, 2-4 parts of a compatilizer, 4-5 parts of an active agent, 1-3 parts of an assistant crosslinking agent and 1-3 parts of a crosslinking agent; wherein the modified graphene oxide is obtained by modifying graphene oxide with dimethyl 5-hydroxyisophthalate and N-hydroxymethyl acrylamide. According to the technical scheme, the problem of insufficient corrosion resistance of the control cable in the prior art is solved.

The invention provides a composite antifouling system coating as well as a use method and application thereof. The coating sequentially comprises a bottom layer, a copper-containing middle layer and a surface layer in the direction from near to far away from a base material, wherein the copper-containing middle layer comprises 20-30 parts of self-polishing acrylic silicon resin, 5-10 parts of lime rosin, 8-12 parts of zinc oxide, 30-50 parts of cuprous oxide, 2-3 parts of a compound antifouling agent, 0.5-1 part of a thixotropic agent and a first diluent. The surface layer is prepared from 30 to 35 parts of caprolactone and lactic acid grafted linear polyester, 5 to 10 parts of highly hydrolyzed N-(hydroxymethyl) acrylamide (NMA) modified acrylic resin, 15 to 20 parts of copper-free organic antifouling agent, 5 to 12 parts of polytetrafluoroethylene micro powder, 2 to 3 parts of dispersing agent and second diluent. The high-hydrolysis copper-free surface layer forms an isolation barrier, so that the copper-containing middle layer is prevented from being in direct contact with air, and the problem that the antifouling efficiency is reduced due to the fact that water is not discharged for a long time after coating is solved; the stable hydrolysis rate of the surface layer resin can ensure the continuous release of the organic antifouling agent, and the copper-containing intermediate layer can provide deep antifouling guarantee and synergistically realize long-acting antifouling.

The invention provides epoxy resin for halogen-free flame-retardant self-leveling powder coating and a preparation method of the epoxy resin, and belongs to the technical field of powder coating. The flame retardant is mainly prepared from anhydrous piperazine, bisphenol A diglycidyl ether, trihydroxymethyl phosphorus oxide, triethyl phosphite, epoxy chloropropane, sodium hydroxide, N-methyl iminodiacetic acid, ethylene glycol diglycidyl ether and other main raw materials through polymerization. The prepared epoxy resin and 2-phenylimidazoline are subjected to low-temperature curing (135 DEG C / 20 min) on the premise that an additional flatting agent does not need to be used, the flexibility of a coating film is good, the impact resistance grade is high, the impact performance reaches the condition that no cracking phenomenon exists in the front and back 60cm, the leveling grade reaches the grade 7 or above, the gloss is high and reaches 95% or above, the oxygen index reaches 34% or above, and the halogen-free flame retardant performance is excellent.

The invention discloses a serine hydroxymethyltransferase mutant and an application thereof in production of L-serin.The serine hydroxymethyltransferase mutant with the specific enzyme activity remarkably improved is obtained by conducting saturated mutation on serine hydroxymethyltransferase from escherichia coli and conducting screening, and the serine hydroxymethyltransferase mutant is applied to synthesis of L-serine. The serine hydroxymethyltransferase disclosed by the invention can be used for effectively improving the efficiency of catalyzing glycine and formaldehyde to synthesize L-serine by using the serine hydroxymethyltransferase, reducing the enzyme dosage, remarkably reducing the production cost and reducing the separation difficulty of downstream products.

The application relates to the technical field of packaging cartons, and discloses a high-strength lightweight packaging carton and a preparation method thereof. The preparation steps are as follows: S1: uniformly mixing trihydroxy heptaoctyl poss, 3-bromopropylene, sodium carbonate and tetrahydrofuran, reacting at 50-60 DEG C for 3-5 h to obtain modified poss; S2: taking hexamethoxymethyl melamine, ethanol and the modified poss to prepare a modified etherified amino resin; S3: uniformly mixing the modified etherified amino resin, mercapto-modified silicon dioxide and a photoinitiator to obtain an additive; uniformly stirring acrylic emulsion, epoxy / acrylic core-shell emulsion, hyperbranched polyurethane acrylate and the additive to obtain reinforcing coating; and coating the reinforcing coating on the surface of the lightweight packaging carton, drying and curing to obtain the high-strength lightweight packaging carton.

The invention discloses a liquid chromatography method for measuring 5-hydroxymethylfurfural in a calcium gluconate and sodium chloride injection. The method comprises the following steps: measuring the calcium gluconate and sodium chloride injection as a test solution; weighing 5-hydroxymethylfurfural, and adding water to dilute the 5-hydroxymethylfurfural to form a reference solution; carrying out continuous sample introduction on the liquid chromatograph by using the reference substance solution to obtain a system applicability solution chromatogram; when the chromatogram of the applicable solution of the system meets the standard, measuring the test solution and the reference solution, respectively injecting the test solution and the reference solution into a liquid chromatograph, and recording the chromatograms; the content of 5-hydroxymethylfurfural in the calcium gluconate and sodium chloride injection is obtained through a 5-hydroxymethylfurfural content calculation formula. The method has the advantages of strong specificity, high sensitivity, good precision, strong durability and the like, and can quantitatively detect 5-hydroxymethylfurfural in the calcium gluconate and sodium chloride injection, so that the safety of clinical medication of the calcium gluconate and sodium chloride injection is improved.

This invention discloses a denitrification agent for low-temperature denitrification and its preparation method, belonging to the field of denitrification technology. The denitrification agent is prepared using diatomaceous earth as the matrix framework, compounded with calcium chloride, calcium bicarbonate, chitosan, sodium lignosulfonate, and TRIS (tris(hydroxymethyl)aminomethane). The components synergistically optimize the pore structure. Chitosan and sodium lignosulfonate achieve self-assembly through hydrogen bonding and electrostatic attraction. Nitrogen oxides are removed through a dual action of alkaline absorption and electrostatic adsorption. The TRIS can be regenerated and reused after alkali washing. This invention's denitrification agent solves the problems of high reaction temperature, poor low-temperature activity, low efficiency in removing low-concentration nitrogen oxides, and easy ammonia escape in traditional SCR denitrification technology, and can meet the requirements for NO removal in flue gas from power plants. x ≤15mg / m 3 It has ultra-low emission indicators, and features excellent low-temperature activity, high denitrification efficiency, and recyclability. It is suitable for denitrification treatment of low-temperature flue gas in power plants, etc.

The invention belongs to the technical field of fine chemical synthesis, belongs to a nonionic short fluorine chain surfactant, and relates to a preparation method of a fluorinated polyether surfactant. The preparation method comprises the following steps: reacting trimethylolethane with a hydrogen bromide acetic acid solution to prepare an intermediate 1; reacting the intermediate 1 in an alkaline environment without an organic solvent to prepare an intermediate 2; reacting the intermediate 2 with pentafluoropropanol under the action of potassium hydroxide and a catalyst 1 to prepare a fluorinated monomer; finally, the fluorinated monomer is subjected to ring opening polymerization under the action of an initiator and a catalyst 2, and the fluorinated polyether type surfactant is prepared. The method has the advantages of easily available raw materials, mild reaction conditions, simple synthesis, low cost, high yield and short fluorine chain of the product, can replace a long-chain fluorine-containing surfactant which is difficult to degrade, and can be used as an additive in the fields of photoresists, coatings, adhesives and the like. The surface tension can be obviously reduced, the surface defects of a coating can be reduced, and the appearance can be improved by adding a very small amount of the surface tension reducing agent.

The application discloses a multifunctional biological imbibition agent and a preparation method and application thereof. The preparation method of the multifunctional biological imbibition agent comprises the following steps: (S1), alkylization reaction to obtain alkyl naphthalene; (S2), chloromethylation reaction to obtain halomethyl alkyl naphthalene; (S3), halogen alkyl nucleophilic substitution reaction to obtain hydroxymethyl alkyl naphthalene; and (S4), esterification reaction to obtain the multifunctional biological imbibition agent. The application further discloses application of the multifunctional biological imbibition agent as an imbibition agent in shale oil reservoir oil extraction. The application has the following advantages: (1) the reservoir adsorption amount is small, but the good wetting reversal characteristic is still maintained, and the emulsification is weak; (2) the high-temperature resistance is strong, and the temperature resistance reaches above 200 DEG C; (3) the preparation process is simple, and the yield is high; (4) the dosage is small, the cost is low, and the economic benefit is remarkable.

The application belongs to the technical field of oil exploitation, and particularly relates to a temporary plugging agent for fracturing acidification and a preparation method thereof. The preparation method is as follows: in a reactor, itaconic acid, p-styrene sulfonic acid, 2-allyloxy methyl-2-hydroxymethyl propane-1,3-diol, vinyl pyridine, pentaerythritol diacrylate, buffer salt and deionized water are sequentially added, stirring is conducted, the pH value is adjusted, and all raw materials are completely dissolved; an initiator is added from a high-position dropping tank, the reaction is automatically heated, the reaction is kept, a reducing agent is added, the reaction is terminated, the pH value is adjusted, and a temporary plugging agent solution is obtained; the temporary plugging agent solution is dried and granulated to obtain the product temporary plugging agent. The preparation method has the characteristics of simple synthesis process and no by-products; the temporary plugging agent has the advantages of large water absorption, large plugging strength, high breakthrough pressure, self-degradation and designable degradation time.

The invention relates to the technical field of high polymer materials, in particular to a polyethylene flame-retardant master batch and a production process thereof. The polyethylene flame-retardant master batch is prepared from the following raw materials in parts by weight: 50 to 60 parts of polyethylene, 10 to 20 parts of hydroxymethyl phosphinic acid, 15 to 20 parts of HDPE-g-MAH, 0.8 to 1.5 parts of an initiator, 1 to 2 parts of an antioxidant and 3 to 6 parts of functional particles. The polyethylene is selected from high-density polyethylene, and the melt index of the polyethylene is 7-20g / 10min under the conditions of 190 DEG C and 2.16 kg; the polyethylene flame-retardant master batch produced by the invention not only can effectively enhance the flame retardant property of a polyethylene product, but also can effectively improve the anti-aging property of the polyethylene product; and the service life of the polyethylene product is prolonged to a certain extent while the quality of the polyethylene product is ensured.

The application discloses a kind of composite super-hydrophobic paper based on alkyl ketene dimer and metal polyphenol network and preparation method thereof, belong to functional paper-based material field.The method is first immersed in 0.25%~5% alkyl ketene dimer emulsion in cellulose paper, is dried at 90~110 DEG C and is cured 48-96h to prepare modified paper;Then, the pH is 8.0-9.0 of tris-hydroxymethyl aminomethane hydrochloride buffer solution, hydrochloric acid dopamine is dissolved in the buffer solution to form dopamine solution, and the concentration is 0.25~20mg / mL of metal ion solution;Finally, the modified paper is immersed in dopamine solution and metal ion solution in turn, and is dried to obtain composite super-hydrophobic paper.The obtained composite super-hydrophobic paper uses cellulose paper-based material as substrate, and hydrophobic layer and metal polyphenol network layer are formed on the surface in turn, the composite paper has super-hydrophobic performance, water barrier performance and photo-thermal response performance, the preparation process is simple, and is suitable for waterproof packaging, self-cleaning surface, anti-icing and deicing and photo-thermal antibacterial and other fields.

The present invention relates to a tanning agent consisting of a polymer of at least: - 0.01 to 12 mol% of N-methylol(meth)acrylamide; and - 50 to 99.99 mol% of at least one anionic hydrophilic monomer.

The invention discloses a fesoterodine intermediate preparation method, and belongs to the technical field of chemical medicine raw material medicine synthesis, 6-(hydroxymethyl)-4-phenylchroman-2-ol and diisopropylamine are used as starting materials to prepare a fesoterodine intermediate, an inert conversion reagent is used, and the reaction temperature is controlled to be 30-60 DEG C, so that the fesoterodine intermediate is obtained. On the other hand, the excessive diisopropylamine reacts with an inert conversion reagent, the excessive diisopropylamine is converted into an excessive state which does not react with the product, and the excessive diisopropylamine is prevented from reacting with the product to generate a large amount of various impurities; a reducing agent and an inert conversion reagent are introduced to be combined, so that the problem of impurity generation caused by palladium catalytic hydrogenation reduction is avoided.

The present application relates to a kind of preparation methods of 2-methylamino-3-formylpyridine, comprising the following steps: 3-cyanopyridine and dimethyl sulfate are heated to reflux reaction in organic solvent I, then base is added, continue to react under heating reflux condition, and obtain intermediate product 2-methylamino-3-formylpyridine.The raw material used in the preparation method of the present application is cheap and easy to obtain, the preparation process has few side reactions, and is easy to purify.Only the steps of extraction and heavy crystallization are needed to achieve high purity, and strict control of anhydrous reaction conditions is not required.The yield and purity are high, and the prepared 2-methylamino-3-formylpyridine is suitable for industrial large-scale production of 2-methylamino-3-hydroxymethylpyridine, and further preparation of eslicarbazepine acetate and / or eslicarbazepine acetate sulfate.

The invention relates to the technical field of powder coatings, in particular to a preparation method and application of a high and low temperature cycle resistant powder coating, and aims to solve the problems of insufficient high and low temperature cycle resistance and interface bonding force of the existing powder coating. The temperature-resistant polyester resin is used as a framework, the heat resistance of the material is improved by introducing a rigid structural unit, meanwhile, the proportion of flexible chain segments is controlled to ensure low-temperature toughness, the epoxy resin is added to improve the crosslinking density and chemical resistance of a coating, and functional groups such as carboxyl provide anchoring points for reaction with a curing agent and a toughening agent; epoxy groups and hydroxymethyl on the surface of the toughening agent can chemically react with carboxyl and hydroxyl of resin and the curing agent to form a strong chemical bonding interface, temperature resistance and flexibility are improved by organic silicon, weather resistance and hydrophobicity are improved by fluorine-containing chain segments, and wear resistance and thermal stability are improved by silicon dioxide hybridization; the added inorganic filler reduces the thermal expansion coefficient of the material.

The invention relates to the technical field of biology, in particular to 5-hydroxymethylcytosine and application of a prognosis model of 5-hydroxymethylcytosine in nasopharynx cancer prognosis evaluation. According to the method, the prognosis scoring model capable of layering the outcome of the patient is constructed, and the model shows strong distinguishing performance in a training set and a verification set. When it is integrated into a prognostic model together with tumor staging and EBV status, the 5hmC score results in higher calibration accuracy and net clinical benefit in decision curve analysis. According to the findings, a 5hmC prognosis model is determined as a noninvasive marker rich in biological information, can be used for prognosis risk layering of NPC patients, and has potential significance for individualized management and improvement of outcome prediction.

The application discloses a low-foam acid zinc plating additive and a preparation process thereof, and belongs to the technical field of electroplating additives. The additive comprises a low-foam softener and a water-based brightener. The low-foam softener comprises the following raw materials in percentage by mass: polyethylene imine 0.8-1.2%, monododecyl phosphate potassium 0.03-0.06%, water-soluble polyether amine 0.2-0.6%, and the balance is water. The water-based brightener comprises the following raw materials: 5-hydroxymethyl furfural 0.6-1.2%, L-cysteine salt 0.2-0.4%, 4-amino-2(1H) pyrimidinone 0.1-0.15%, sodium salicylate 0.05-0.1%, citric acid 1-1.5%, alpha-ketoglutaric acid 0.3-0.5%, isoascorbic acid 0.2-0.4%, and the balance is water. The application optimizes the components in the additive, prepares a water-based formula, and the components are uniformly dispersed, the foam amount is low, and the plating layer quality is good.

The application belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of component A and component B. The component A is composed of the following raw materials: a diphenyl phenolic epoxy resin, hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene, modified nano calcium zirconate, cage octakis(aminophenyl)silsesquioxane, n-butyl glycidyl ether, KH-550 silane coupling agent, polyether amine, fumed silica and defoaming agent. The component B is composed of the following raw materials: polyborosilazane and 2-ethyl-4-methyl imidazole. The cage octakis(aminophenyl)silsesquioxane in the raw material of the sand consolidation agent strengthens the network structure stability through chemical bonding, the hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene realizes thermal stabilization through chemical bonding and physical dispersion, and the modified nano calcium zirconate provides physical support. The three components synergistically improve the heat resistance of the system.

The application provides a microcapsule and kaolin composite reinforced self-lubricating fabric gasket material and application thereof, and relates to the technical field of lubricating materials.The application provides a tung oil-methyl etherified melamine resin microcapsule, which comprises tung oil and methyl etherified melamine resin wrapped on the surface of the tung oil, and the methyl etherified melamine resin is formed by cross-linking polymerization of methyl etherified hexamethylol melamine.The tung oil is wrapped by the methyl etherified melamine resin, so that the excellent lubricating performance of the tung oil is retained, the dispersion problem of the tung oil in the resin is solved, and the oxidation reaction of the tung oil is inhibited.The tung oil-methyl etherified melamine resin microcapsule and amino kaolin are simultaneously introduced into the self-lubricating fabric gasket material, and the synergistic reinforcing effect of the tung oil-methyl etherified melamine resin microcapsule and the amino kaolin is exerted, so that the wear resistance and the lubricating performance of the self-lubricating fabric gasket material are effectively improved.

The invention provides a crystal form VI of an acrylamide compound, and the acrylamide compound is (S)-N-(5-((6-(2-(7, 7-dimethyl-1-oxo-1, 3, 4, 6, 7, 8-hexahydro-2H-cyclopentane [4, 5] pyrrolo [1, 2-a] pyrazine-2-yl)-3-(hydroxymethyl) pyridine-4-yl)-4-methyl-3-oxo-3, 3, 4-triazolo [1, 2-a] pyrazine-2-yl)-3-(hydroxymethyl) pyridine-4-yl)-4-methyl-3-oxo-3, 3, 4-triazolo [1, 2-a] pyrazine-2-yl)-3-(2, 3, 4-triazolo [1, 2-a] pyrazine-2-yl)-4- The crystal form VI is a 2-(2, 4-dihydropyrazine-2-yl) amino)-2-(2-methyl-4-(tetrahydro-2H-pyran-4-yl) piperazine-1-yl) 5phenyl) acrylamide compound, and an X-ray powder diffraction pattern of the crystal form VI comprises diffraction peaks with the following 2 theta angle values: 8-3 + / -0.2 degrees, 13.2 + / -0.2 degrees and 18.9 + / -0.2 degrees. The crystal form VI has the advantages of good stability and low hygroscopicity, and is suitable for industrial production of bulk drugs and development of preparation prescriptions.

This invention discloses a high-temperature resistant, low-growth, medium-to-low adhesion silicone pressure-sensitive adhesive, its preparation method, and its application. The silicone pressure-sensitive adhesive comprises the following components by weight: 25-30 parts of high-hydroxymethyl MQ silicone resin, 15-20 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of vinylmethyl MQ silicone resin, 10-20 parts of vinyl-terminated polydimethylsiloxane, 30-40 parts of solvent, 0.02-0.08 parts of acid catalyst, and 0.2-0.5 parts of inhibitor. The silicone pressure-sensitive adhesive provided by this invention has high cohesive strength and low adhesion creep during high-temperature baking, enabling protection during the high-temperature baking process of glass. It achieves no white haze precipitation, no adhesive residue, and easy peeling after high-temperature baking.

The invention discloses a conductive poly-eutectic gel, a preparation method thereof and an application of the conductive poly-eutectic gel in a strain sensor. Compared with a eutectic solution system composed of acrylamide as a hydrogen bond donor and choline substances, a eutectic solution obtained by mixing hydroxymethyl acrylamide and the choline substances has wider temperature zone stability; the transparent eutectic solution character is still kept at the room temperature, the solution curing phenomenon is avoided, higher solution conductivity is achieved, and the conductive eutectic gel is prepared by blending and photopolymerization of a composite solution with an alcohol solvent as a carrier and liquid metal nanoparticles, carbon nanotubes and organic conductive molecules as fillers and the eutectic solution. The eutectic gel prepared by the method overcomes the defect of low conductivity of a eutectic gel system, endows the eutectic gel with high conductivity, improves the mechanical strength and strain toughness of the gel, and can be used as a flexible strain sensor material for repeated cyclic utilization. The preparation process is simple, and the materials are cheap and easy to obtain.

The present invention provides, in part, a cationic lipid based on tris (hydroxymethyl) methylglycine and citric acid having an aromatic head group having formula (I) and its sub-formula: or a pharmaceutically acceptable salt thereof. The compounds provided herein can be used to deliver and express mRNA and encoded proteins, for example, as components of liposomal delivery vehicles, and thus can be used to treat various diseases, disorders, and conditions, such as those associated with the lack of one or more proteins. (I)

The present invention addresses the problem of providing a cured film-forming composition for forming a cured film for forming an alignment material which has excellent solvent resistance, can align polymerizable liquid crystals with high sensitivity, and has little liquid crystal rejection. [Solution] A composition for forming a cured film, an alignment material, and a phase difference material. The composition for forming a cured film contains (A) a compound having a photo-alignment group, (B) a polymer having a structural unit having an N-hydroxymethyl group or an N-alkoxymethyl group, and (C) a cyclodextrin derivative in which some or all of hydroxyl groups are modified.

The subject of the present application is an agent for the oxidative dyeing of keratinous fibers, in particular human hair, which contains the coupling oxidative dye precursor 4-hydroxymethyl-phenol, keratinous fiber dying kits comprising the agent, and processes for the oxidative dyeing of keratinous fibers using the agent.

The invention relates to a method for preparing a structural color pattern by using a melanin photon material, and belongs to the technical field of structural colors. The method comprises the following steps: S1, under an alkaline condition, carrying out a reaction on PS microspheres and dopamine hydrochloride in a tris (hydroxymethyl) aminomethane-hydrochloric acid buffer solution, and centrifuging to obtain PS (at) PDA microspheres; s2, the PS (at) PDA microspheres are prepared into PS (at) PDA microsphere dispersion liquid, the PS (at) PDA microsphere dispersion liquid is dropwise added to the surface of a silica gel plate, and PS (at) PDA structural color pellets are obtained through drying treatment; and S3, the PS-coated PDA structural color pellets are prepared into PS-coated PDA structural color pellet dispersion liquid, atomization deposition is conducted through a mask technology, and a structural color pattern is obtained. By regulating and controlling the particle size of the PS microspheres and the thickness of the PDA shell layer, the structural color material with uniform color and high color visibility and saturation can be prepared, and finally the preparation of the full-chromatographic structural color covering the whole visible spectrum area is realized.