252 results about "Trimethyl benzene" patented technology

To sufficiently enhance the curability of an active energy ray-curable ink composition for inkjet printing, which contains (2,4,6-trimethylbenzoyl)bis(p-tolyl)phosphine oxide as a photopolymerization initiator, and preferably to improve the solvent resistance of a cured product. [Solution] An active energy ray curable ink composition for inkjet printing, which has a viscosity of 5 cps or more and 80 cps or less at room temperature, comprises: 10% by mass or more of a monofunctional monomer, 1 to 15% by mass of an amine-modified oligomer, and (2,4,6-trimethylbenzoyl)bis(p-tolyl)phosphine oxide, based on the ink composition; and when the ink composition further contains a black pigment, the ink composition contains a sensitizer.

The present invention discloses a high-gloss environmentally friendly UV-curable luminous ink and a preparation method thereof, which belongs to the technical field of UV-curable luminous ink. The ink comprises the following raw materials in parts by weight: 78 to 84 parts of bio-based polyurethane prepolymer, 38 to 45 parts of bio-based acrylate monomer, 10 to 15 parts of modified 2,4,6-trimethylbenzoylphenylphosphonic acid ethyl ester as UV curing initiator, 11 to 16 parts of luminous powder, 7 to 10 parts of micro powder filler, and 4 to 8 parts of auxiliary agent; the bio-based polyurethane prepolymer is obtained by reacting castor oil, resorcinol, fructose and 1,5-pentamethylene diisocyanate in a weight ratio of 8 to 12:2 to 3:13 to 17:4 to 9. In the above manner, the prepared high-gloss environmentally friendly UV-curable luminous ink is coated on a substrate and then subjected to UV light curing treatment (curing energy 2800mJ / cm 2 ), the thickness of the cured film can be controlled more loosely, and the cured film thickness can be controlled at 8-12μm. The cured film has good coating appearance, friction resistance, stain resistance and gloss.

The invention discloses an aluminum substrate UV matt finish paint and a preparation process thereof, and relates to the technical field of paints.The aluminum substrate UV matt finish paint is prepared from, by mass, 10%-20% of modified polyurethane acrylate, 25%-32% of high-functionality aliphatic polyurethane acrylate, 18%-30% of special modified epoxy acrylate resin, 0.5%-2% of dispersing agent, 0.1%-0.5% of defoaming agent, 1%-3% of anti-settling powder and the balance water. The paint is prepared from the following components in percentage by weight: 10 to 15 percent of magnesium silicate mineral, 1 to 10 percent of matting powder, 0.2 to 1 percent of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 3 percent of trimethylbenzoyl-diphenyl phosphine oxide, 1 to 3 percent of acrylate flatting agent, 0.2 to 1.2 percent of polyurea modified polyurethane rheological agent and 5 to 15 percent of trimethylolpropane triacrylate. According to the UV matte finishing paint disclosed by the invention, through compounding of ternary resin and enhancement of nano silicon dioxide, a rigid and tough cross-linked network is constructed, a paint film is free of cracks when being bent at 180 degrees, the adhesive force reaches grade 0, and a coating is resistant to acid and alkali etching liquid and free of corrosion by cooperating with a silane coupling agent and a light stabilization system, and the color difference is delta Elt after the UV matte finishing paint is subjected to high temperature of 260 DEG C; and 1.5, the anti-yellowing performance is excellent.

The invention discloses a preparation method of silicone rubber and the silicone rubber, and belongs to the field of silicone rubber. The preparation method comprises the following steps: dispersing fumed silica in an acid solution to obtain a fumed silica solution, dispersing chitosan in a dilute acid solution to obtain a chitosan solution, mixing the fumed silica solution and the chitosan solution, stirring, centrifuging, washing and drying to obtain a coated product; mixing the coated product, magnesium hydroxide, raw rubber, a cross-linking agent, a vulcanizing agent and a catalyst, heating and kneading, and vacuumizing to obtain initial silicone rubber; the preparation method comprises the following steps: dissolving 1-hydroxycyclohexyl phenyl ketone into an organic solvent to obtain a solution A, mixing acrylic acid, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide and titanium dioxide to obtain a solution B, soaking initial silicone rubber into the solution A, taking out, airing, soaking into the solution B, and carrying out ultraviolet curing, cleaning and airing to obtain the silicone rubber. The heat-conducting property, the mechanical property and the wet friction property of the silicone rubber are greatly improved.

The invention belongs to the technical field of UV visbreaking polymers, and particularly relates to a UV visbreaking film and a preparation method thereof. Wherein the UV viscosity-reducing film sequentially comprises a base film (1), a first viscosity-reducing adhesive layer (5), a second viscosity-reducing adhesive layer (4) and a release film (3) from bottom to top, the first viscosity-reducing adhesive layer (5) and the second viscosity-reducing adhesive layer (4) both comprise a photoinitiator, the photoinitiator in the first viscosity-reducing adhesive layer (5) is 1-hydroxy-cyclohexyl phenyl ketone, and the content of the photoinitiator in the formula of the adhesive layer is 0.1%-10% by mass; a photoinitiator in the second viscosity-reducing adhesive layer (4) is bis (2, 4, 6-trimethylbenzoyl) phenyl phosphine oxide, and the content of the photoinitiator in the adhesive layer formula is 0.1-10% by mass; in the preparation method, ultraviolet irradiation precuring is carried out, so that the UV viscosity-reducing film has light selectivity and high cohesion strength, and the residual adhesive is remarkably reduced.

A UV curable inkjet ink including a free radical polymerizable compound and an acyl phosphine oxide initiator wherein the acyl phosphine oxide initiator includes an acyl group selected from the group consisting of a benzoyl group substituted by an urea group or an oxalylamide group; a 2,6-dimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,6-dimethoxy benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,4,6-trimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; and a 2,4,6-trimethoxybenzoyl group substituted in position 3 by an urea group or an oxalylamide group wherein the urea group and the oxalylamide group include a tertiary amine group positioning a phosphorus atom of the acylphosphine oxide initiator in a 1 to Z position, where position 1 is defined as that of the phosphorus atom and position Z is defined as the nitrogen atom of the tertiary amine group with Z representing an integer of at least 11; and that the acyl phosphine oxide initiator contains no more than two photoinitiating moieties having a phosphine oxide group.

The invention relates to the technical field of coatings, in particular to an ultraviolet coating for a metal battery case and a preparation method of the ultraviolet coating. Alpha-H cyano modified acrylate resin, phosphate modified acrylic resin and 50% aldehyde ketone resin are matched to serve as a base material; according to the present invention, inorganic fillers such as mica powder, silica powder, titanium dioxide and fumed silica are matched, and isobornyl acrylate, hydroxyethyl methylacrylate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide, the dispersant, the defoaming agent and the leveling agent are supplemented, such that the coating material has strong adhesion to the base material, and has good adhesion to the surface of the base material; the prepared coating not only has excellent insulating property, high temperature resistance and corrosion resistance, but also can be used for coating batteries with various complex shapes without dead angles, and can greatly improve the application scene and safety performance of the batteries and prolong the service life of the batteries.

The invention belongs to the technical field of photodynamic therapy, and particularly relates to a BODIPY compound, a preparation method and application of the BODIPY compound as a photosensitizer. The invention provides a series of novel-structure small molecule compound photosensitizers which take BODIPY dimers as basic frameworks and are pure I-type photodynamic. Under the combined action of a heavy atom introduced at a specific position, 2, 4, 6-trimethylphenyl and a defined structure R group, the yield of active oxygen is improved, and the regulation and control of the pure I-type photosensitizer are performed by regulating and controlling the energy level. Compared with a common photosensitizer molecule indocyanine green (ICG), the active oxygen yield is about 50 times that of ICG, higher photo-thermal stability is achieved, the applicability of a photodynamic reagent can be remarkably improved, the preparation method is simple, the reaction efficiency is high, the yield is high, and good industrial application prospects are achieved.

The invention discloses an M / ZrO2-In2O3 catalyst and a preparation method and application thereof.The M is obtained by loading M monoatoms on ZrO2-In2O3, M is selected from one of Pt, Pd, Ru, Rh, Ir, Au, Re and Ag, the loading capacity is 0.01 wt%-2 wt%, and the molar ratio of ZrO2 to In2O3 is (0.3-1.5): 1; the preparation method comprises the following steps: precipitating Zr salt and In salt by using alkali to obtain a metal composite hydroxide, calcining the metal composite hydroxide to obtain ZrO2-In2O3, impregnating and loading M salt on ZrO2-In2O3, and finally reducing by using low-temperature hydrogen to obtain the ZrO2-In2O3 / M-M composite photocatalyst. According to the invention, M / ZrO2-In2O3 is taken as a catalyst, the phenolic compound and CO2 are taken as raw materials, and the 2, 6-dimethylphenol or 2, 4, 6-trimethylphenol chemical is obtained with high yield through series hydrogenation and alkylation reaction of CO2.

The present invention relates to a process of oxidation of 2,3,6-trimethyl phenol by oxygen or an oxygen-containing gas in the presence of in the presence of a copper (II) halide as catalyst and of water and a specific diol comprising at least on tertiary hydroxyl group as reaction medium.

The invention discloses a fluorine release film for a high-viscosity silica gel protective film of an AF glass screen and a preparation method of the fluorine release film, and belongs to the technical field of unsaturated polyester, raw materials are uniformly mixed and coated on a PET base material, during high-temperature heat preservation, part of double bonds on a modified release agent and a modified filler can react with silicon-hydrogen bonds on hydrogen-containing silicone oil under the action of chloroplatinic acid, so that the fluorine release film is formed. The modified filler and the modified release agent are grafted by residual double bonds on the modified filler and the modified release agent under the action of 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide through ultraviolet irradiation, so that the modified filler is more thoroughly contacted with polymer molecules, a stable conductive grid can be formed during raw material curing, and the conductivity of the conductive grid is improved. Meanwhile, under the action of triphenyl sulfonium hexafluorophosphate, an expanding monomer DB-TOSU is subjected to double-ring-opening polymerization to form bicyclic acetal, the bicyclic acetal is converted into carbonyl and hydroxyl, and the carbonyl and hydroxyl are matched with a polyhedral oligomeric silsesquioxane structure on the modified filler, so that the smoothness of the surface of the release film is ensured.

The invention relates to a UV system battery insulation coating and a preparation method thereof, and the UV system battery insulation coating is mainly prepared from the following components: special modified polyurethane acrylate, isobornyl methacrylate, epoxy acrylate, a dispersant, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, benzoyl formate, phenyl bis 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2, 4, 6- The coating is prepared from 2, 4, 6-trimethylbenzoyl phosphine oxide, a defoaming agent, a flatting agent and color paste. The invention overcomes the defects that the cell of the existing power battery mostly adopts a PET (Polyethylene Terephthalate) blue film, has weak adhesive property, is easy to fall off and strip and the like, and adopts special modified polyurethane acrylate, epoxy acrylate and isobornyl methacrylate, and is matched with two preferably selected photoinitiators capable of efficiently absorbing near 395nm and a photoinitiator with high odor removal property; and under the synergistic effect with other components with preferable types and dosage proportions in the system, the adhesive has the advantages of excellent cohesiveness, ageing resistance, adhesive force, insulation, pressure resistance and impact resistance.

The invention discloses bionic extracellular matrix hydrogel with adjustable hardness and viscoelasticity and a preparation method of the bionic extracellular matrix hydrogel, and the bionic extracellular matrix hydrogel is prepared according to the following steps: (1) weighing freeze-dried GelMA hydrogel with different amino substitution degrees, adding the freeze-dried GelMA hydrogel into a phenyl (2, 4, 6-trimethylbenzoyl) lithium phosphate solution, and dissolving the freeze-dried GelMA hydrogel in the phenyl (2, 4, 6-trimethylbenzoyl) lithium phosphate solution to obtain a GelMA solution; (2) weighing sodium alginate hydrogels with different molecular weights, and adding pure water to dissolve the sodium alginate hydrogels to prepare a sodium alginate solution; (3) mixing the GelMA hydrogel solutions with different amino substitution degrees in the step (1) and the step (2) with sodium alginate hydrogel solutions with different molecular weights, and carrying out a first cross-linking reaction under ultraviolet irradiation; and (4) carrying out an ionic cross-linking reaction on the hydrogel subjected to ultraviolet irradiation in a calcium chloride solution to obtain the methylacryloyl gelatin (GelMA) and sodium alginate interpenetrating network hydrogel, so that the hardness and viscoelasticity of the hydrogel can be regulated and controlled, and the hydrogel has good biocompatibility and becomes an ideal platform for researching the action of matrix viscoelasticity on cell biology.

The invention relates to the field of filter materials, and discloses a denitration catalyst-loaded filter bag and a preparation method thereof, the filter bag comprises interface modifier impregnated modified polytetrafluoroethylene fiber and a catalytic additive loaded on the modified polytetrafluoroethylene fiber, the interface modifier is prepared by carrying out hydrolysis-polycondensation on ethyl orthosilicate, perfluorooctyl ethyl trimethoxy silane, trimethyl borate and 3-(2, 3-epoxypropoxy) propyl trimethoxy silane, and the interface modifier is prepared by carrying out hydrolysis-polycondensation on ethyl orthosilicate, perfluorooctyl ethyl trimethoxy silane, trimethyl borate and 3-(2, 3-epoxypropoxy) propyl trimethoxy silane; the catalytic additive is prepared by using polyether PluronicF127, 1, 3, 5-trimethylbenzene and dopamine as raw materials through emulsion-induced interface assembly and externally introducing mesoporous silica to prepare a hollow spherical catalyst carrier, then loading cerium and manganese precursors onto the surface of the hollow spherical catalyst carrier, and coating with a titanium dioxide shell layer. The filter bag prepared by the invention has good denitration activity, sulfur resistance, water resistance, hydrophobicity and friction resistance.

The present application discloses an antibacterial hydrogel dressing with integrated constant temperature photothermal effect and controlled drug release function, as well as its preparation method and application, which belongs to the field of medical biomaterial technology. The antibacterial hydrogel dressing with integrated constant temperature photothermal effect and controlled drug release function provided by the present application includes: a dressing and an antibiotic drug compounded on the dressing; the dressing is woven from photothermal water gel fiber and thermosensitive hydrogel fiber; the photothermal water gel fiber is made of photothermal dye, proton donor and phase change material as the core layer and sodium alginate as the shell layer; the thermosensitive hydrogel fiber is made of N-isopropyl acrylamide, methylene bisacrylamide, phenyl-2,4,6-trimethylbenzoyl lithium phosphinate and sodium alginate. The hydrogel dressing prepared by the present application has an inherent temperature control mechanism, can release drugs on demand and in a concentrated manner, has excellent antibacterial effect, and has broad application prospects in the preparation of biomedical materials.

The invention belongs to the field of material science and clinical medicine, and particularly relates to a succinic acid polymer and a preparation method and derivative thereof, adhesive hydrogel and a preparation method and application thereof. According to the specific technical scheme, the succinic acid polymer is provided, and the succinic acid acrylate polymer is prepared by modifying the succinic acid polymer through acryloyl chloride; further uniformly mixing a succinic acid acrylate polymer, acrylic acid, dimethylaminoethyl methacrylate and acrylic acid N-hydroxysuccinimide ester with a photoinitiator phenyl-2, 4, 6-trimethylbenzoyl lithium phosphite, and reacting under the irradiation of ultraviolet light to obtain the photoinitiator. The three-dimensional network structure hydrogel with strong wet adhesion, low swelling rate and high toughness is prepared through a photopolymerization reaction. The hydrogel has good biocompatibility, an in-vivo rabbit model proves that an orificium fistulae can be completely sealed through single use or combined suture, a safe and efficient novel biological material is provided for anastomotic fistula treatment, and the hydrogel has important clinical transformation potential.

The present invention relates to a novel polymorph of (1R,2R,3aS,3bR,10aS,10bR,11S,12aS)-5,10b-difluoro-1-(((fluoromethyl)thio)carbonyl)-11-hydroxyl-2,10a,12a-trimethyl-7-phenyl-1,2,3,3a,3b,7,10,10a,10b,11,12,12a-dodecylhydrocyclapenta[5,6]napththo[1,2-F]indazole-1-furan-2-carboxylate ester as shown in formula (I), a preparation method therefor, and a use thereof. The crystal form of the present invention has characteristics such as a significant pharmaceutical effect, good stability, high yield, and high purity, and is beneficial for the selection and design of a drug administration route and the determination of a drug preparation process parameter, thereby improving drug production quality.

The application discloses an organic compound biological probe and a preparation method and application thereof, and belongs to the field of fluorescent probes. The structural formula of the organic compound biological probe is as follows, and the preparation method comprises the following steps: adding 2,4-dihydroxybenzaldehyde and anhydrous potassium carbonate into anhydrous acetonitrile or DMF, then dropwise adding 1,4-dibromobutane to obtain a colorless oily compound 1 through reflux reaction; dissolving the compound 1 and triphenylphosphine in anhydrous acetonitrile to obtain a solid compound 2 through reflux reaction; dissolving 1,1,2-trimethyl-1H-benzo[e]indole and iodoethane in anhydrous acetonitrile to obtain a compound 3 through reflux; dissolving the compound 3 and the compound 2 in anhydrous ethanol, adding piperidine, and then performing reflux reaction and purification to obtain the organic compound biological probe. The organic compound biological probe can self-assemble into nanoparticles with a size of about 1.6 nm in water, has strong anti-photobleaching ability, and integrates red light and near-infrared dual-channel imaging, pH detection, mitochondrion targeting and chemotherapy.

The invention discloses an industrial packaging coating integrating anti-counterfeiting, antibacterial and pathogen detection functions and a preparation method thereof, and relates to the technical field of industrial packaging coatings. The coating is prepared from modified polyurethane acrylate, ethyoxyl ethyoxyl ethyl acrylate, 1, 6-hexanediol diacrylate, hydroxyethyl methylacrylate, trimethylolpropane triacrylate, epsilon-polylysine, carbon quantum dot-microencapsulated spiropyrane, a water-based flatting agent, 2, 4, 6-trimethyl-1, 3-pentanediol diacrylate, a water-based curing agent, a defoaming agent, a defoaming agent and a solvent. The cleaning agent is prepared from 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide, a dispersing agent, lauryl sodium sulfate, pathogen microcapsules and ethyl acetate. The three functions of anti-counterfeiting, antibiosis and pathogen detection are integrated into a single coating, the limitation that a traditional packaging material is single in function is broken through, the anti-counterfeiting reliability is improved, no harmful substance is migrated out, and efficient pathogen screening is achieved; safety standards are met, harmful substance migration is avoided, and the base material is matched with various base materials such as films and fibers and is mechanically strengthened.

The invention relates to the technical field of organic synthesis, and discloses a preparation method of trimethylbenzoquinone, which comprises the following steps: mixing a reaction solution containing unsym-trimethylbenzene and an organic solvent with a catalyst, and adding an oxidizing agent to carry out oxidation reaction to obtain trimethylbenzoquinone, wherein the catalyst comprises a pyridine compound and methylrhenium trioxide. According to the method, the unsym-trimethylbenzene is adopted as a raw material, the methylrhenium trioxide and the pyridine compound are adopted as catalysts, the trimethylbenzoquinone is prepared through oxidation of the oxidizing agent, the product yield is high, and the consumption of the oxidizing agent is low.

This invention discloses a photosensitive supramolecular fluorescent polymer, its preparation method, and its anti-counterfeiting application in water, using trifluoroethyl methacrylate, hexafluorobutyl acrylate, 4-(acryloyloxy)butyl4-(2-methyl-3-(2-(2-methylbenzo[b]thiophen-3-yl)-4-oxo-5,6-2H-4H-thiaran[2,3-)b]thiaran-3-yl)benzo[b]thiophen-6-yl)-4-oxobutyrate, 4 This polymer was prepared by a simple one-step free radical copolymerization method using 1,1-(acryloyloxy)butyl3-(3,3,4,4,5,5-hexafluoro-2-(2-methyl-1,1-dioxide benzo[b]thiophene-3-yl)cyclopent-1-en-1-yl)-2-methylbenzo[b]thiophene-6-carboxylate 1,1-dioxide and phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (photoinitiator-819) as raw materials. The polymer exhibits excellent multicolor light-switching performance, high stretch ratio, high self-healing efficiency, strong substrate adhesion, and antifouling properties, especially demonstrating excellent stability under strong acid, strong alkali, and high salt environments. The synthetic route is simple, and it has great application potential in underwater anti-counterfeiting and encryption technologies.

The invention relates to a calcipotriol nano-composite, difunctional integrated hydrogel for treating psoriasis as well as preparation and application of the difunctional integrated hydrogel. The preparation method comprises the following steps: loading calcipotriol on amino-modified mesoporous silica, and then carrying out a one-pot reaction on the amino-modified mesoporous silica, methacrylated gelatin, dopamine methacrylamide, sodium pirolinate carboxylate and phenyl (2, 4, 6-trimethylbenzoyl) lithium phosphate to obtain the difunctional integrated hydrogel. The hydrogel disclosed by the invention is UV-responsive drug-loaded hydrogel, can be quickly cross-linked and adhered to the surface of skin after being irradiated by UV, has the properties of high light transmission, drug sustained release, moisture retention and stable structure, and meets the clinical requirements of synchronous and integrated drug treatment and UV irradiation while remarkably improving the bioavailability of an externally applied drug; organic combination and mechanism complementation of two treatment modes are realized, so that the psoriasis is treated more efficiently.

The present invention belongs to the field of photodynamic therapy technology, and more particularly to a BODIPY compound, a preparation method and its use as a photosensitizer. The present invention provides a series of novel small molecule compound photosensitizers with BODIPY dimer as basic skeleton and pure type I photodynamic. By the combined action of heavy atoms, 2,4,6-trimethylphenyl groups and limited structure R groups introduced at specific positions, the reactive oxygen species yield is increased, and the regulation of pure type I photosensitizer is carried out by regulating energy levels. Compared with common photosensitizer molecule indocyanine green (ICG), the reactive oxygen species yield is about 50 times that of ICG, has higher photothermal stability, can significantly increase the applicability of photodynamic agents, and the preparation method is simple, the reaction efficiency is high, the yield is high, and there is good industrial application prospect.

The present invention provides an inkjet ink comprising: a radiation-curable material; 2% by weight or more of phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide; 2% by weight or more in total of one o

A preparation method of the methacrylated gelatin with the dual functions comprises the following steps: firstly, preparing collagen methylated polymethacrylate, then mixing 5% of collagen methylated polymethacrylate, 0.2% of trimethylbenzoyl phosphonate, 10 mg / ml of a herba houttuyniae extract and 20 micrograms / ml of nifedimab, and carrying out uniform mixing, so as to obtain the methacrylated gelatin with the dual functions, the collagen methylated polymethacrylate and the trimethylbenzoyl phosphonate, the herba houttuyniae extract, the nifedimab and the collagen methylated polymethacrylate, the herba houttuyniae extract and the nifedimab. The methacrylated gelatin is prepared under ultraviolet irradiation, and the loose cross-linked network structure of the methacrylated gelatin can realize continuous release of drugs, so that the demand of continuous and stable drug delivery is met; in addition, the gelatin methacrylamide, the herba houttuyniae extract and the nintedanib are combined to relieve hemorrhagic intestinal adhesion and can regulate inflammation and anti-fibrosis functions.

The present invention discloses a hydrogel material for antibacterial and tissue repair and its preparation method and application, which belongs to the field of biomedical material technology. The preparation method of the hydrogel material includes: deionized water dissolving phenyl (2,4,6-trimethylbenzoyl) lithium phosphate, heating in a water bath under a light-proof environment, obtaining a photoinitiator solution, adding phenylboronic acid grafted methacryloyl gelatin, heating and fully dissolving, obtaining a bio-ink precursor A; polyvinyl alcohol is added to the photoinitiator solution, heated and stirred and fully dissolved, obtaining a bio-ink precursor B, adding magnesium manganese doped vacancy bismuth oxide nanomaterial and mixing evenly, obtaining a bio-ink precursor C, mixing with the bio-ink precursor A, and the obtained mixed bio-ink is formed by injection extrusion and light curing. The hydrogel material of the present invention can increase ROS production and enzyme-like activity, realize antibacterial sequential treatment, and has important application potential in promoting the repair of infected tissues.

The invention discloses an organic compound biological probe and a preparation method and application thereof, wherein the organic compound biological probe is In-AIE, and the method comprises: dissolving rutin in acetonitrile, and then adding 4-formyl pyridine and n-tributylphosphine for reflux reaction to obtain compound 1; dissolving 1,1,2-trimethyl-1H-benzo[e]indole and iodoethane in anhydrous acetonitrile for reflux to obtain compound 2; adding 2,4-dihydroxybenzaldehyde and anhydrous potassium carbonate to anhydrous acetonitrile and then dropping 1,4-dibromobutane for reflux reaction to obtain colorless oily compound 3; dissolving compound 2 and compound 3 in anhydrous ethanol for reflux reaction to obtain solid compound 4; dissolving compound 1 and compound 4 in anhydrous acetonitrile for reflux reaction and then purifying to obtain solid In-AIE. It can quickly enter cells within 1 min, has strong anti-photobleaching ability, and integrates multi-channel imaging, pH detection, mitochondrial targeting and photodynamic therapy.

The present invention relates to a method for determining enantiomers of polypeptide protected amino acids. Compared with the prior art, a normal phase chromatographic column is not used to determine enantiomers using n-hexane and isopropanol / ethanol as a mobile phase system; instead, a reverse phase chiral chromatographic column with a surface coated with cellulose-tris(4-methylbenzoate) filler is used, and ammonium acetate solution-acetonitrile is used as a mobile phase for gradient elution; under the chromatographic conditions, enantiomers and main components can be effectively separated, and a buffer salt is used as a mobile phase, and the target peak is sharp and easy to judge and detect; and the ammonium acetate and acetonitrile used in the mobile phase system are both conventional reagents, which are easy to obtain, thereby reducing the detection cost.

The present invention relates to the manufacturing of dimethylphenols, particularly 2,5-dimethylphenol, respectively trimethylphenols, particularly 2,3,6-trimethylphenol, from 2,5-dimethylfuran and acetylene, respectively propyne, particularly in MAP gas, in the presence of a platinum catalyst. This invention offers a sustainable synthesis of β-tocopherols, respectively α-tocopherols.

The invention discloses an odorless scratch-resistant elastic bending UV (ultraviolet) excimer skin-touch varnish, which relates to the technical field of coatings and comprises the following components in percentage by mass: 10-30% of functional acrylate resin, 10-30% of a solvent, 10-30% of a solvent, 10-30% of a solvent and 10-30% of a solvent. 40 to 80% of modified polyurethane acrylate resin; 0.1-1% of a leveling agent; 0.1-1% of a defoaming agent; 0.1-4% of an organosilicon auxiliary agent; 0.5 to 2% of 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide; 0.5 to 7% of 2-hydroxy-4 '-(2-hydroxyethoxy)-2-methyl propiophenone, and the balance of water; 0.3-1% of a wetting dispersant; 2-5% of UV anti-settling slurry; 1-5% of wax powder; and 5-30% of nano sol. According to the UV quasi-molecular skin-touch varnish disclosed by the invention, through the combined action of an odorless resin system, fluorosilicone modified and enhanced three-functional-group elastic resin, nano-zirconia phase change toughening and a crosslinkable fixing auxiliary agent, multiple pairs of performance contradictions of elasticity and hardness, instant effect and durability, odorless effect and stability and the like in a traditional elastic bending UV coating are successfully solved; and the high-performance skin-touch coating with excellent elastic bending property, lasting high scratch resistance, real odor removal effect and good stability is obtained.