33 results about "Dibenzoylmethane" patented technology

The invention relates to the technical field of detection kits, in particular to a preparation method of fluorescent microspheres, the fluorescent microspheres and a preparation method of a kit. According to the invention, 4-vinylbenzoic acid, dibenzoylmethane and phenanthroline are used as ligands to prepare the europium complex; the prepared europium complex, styrene and lauryl methacrylate are subjected to first-stage copolymerization polymerization to obtain a polymer core with the europium complex, itaconic acid is added for continuous polymerization in the second-stage polymerization process, and the prepared fluorescent microspheres are uniform in size, high in fluorescence intensity and high in stability. The prepared detection kit has the advantages of high detection sensitivity and stable and reliable detection effect when being used for detecting the myocardial injury marker cTnI.

The invention relates to the technical field of synthesis of organic compounds, and discloses a dibenzoylmethane preparation method, which comprises the following steps: preparation of a functionalized ionic liquid, preparation of a deep eutectic solvent, construction of a composite system, implementation of a condensation reaction, regeneration of catalytic active sites, pH adjustment, crystal separation and the like. According to the method, a temperature-responsive two-phase system formed by the functionalized ionic liquid and the deep eutectic solvent is combined with a catalyst regeneration process and a pH regulation crystallization separation technology, so that the greenization, high efficiency and integration of the dibenzoylmethane synthesis process are realized, the product purity and yield are remarkably improved, and the environmental pollution and the production cost are reduced.

The present invention relates to precursors of dibenzoylmethane compounds having an amide group on one of the rings, and corresponding photoconversion compounds, pharmaceutically or cosmetically acceptable salts thereof, or stereoisomers or mixtures thereof, for use in protecting human or animal living organisms or materials from ultraviolet light. The present invention also relates to the preparation processes thereof, as well as cosmetic compositions, pharmaceutical compositions or personal care compositions thereof.

The invention discloses a sunscreen lipstick, which is prepared from the following components in percentage by mass: 0.5 to 3 percent of antioxidant hydroponic oil, 0.5 to 3 percent of soothing and repairing hydroponic oil, 1 to 30 percent of water, 5 to 10 percent of tris (octyldodecanol) citrate, 5 to 10 percent of synthetic wax, 5 to 10 percent of octocrylene, 5 to 10 percent of bis-diglycerol polyacyl adipate, 5 to 10 percent of homosalate, 5 to 10 percent of ethylhexyl stearate, 5 to 10 percent of ethylhexyl salicylate, 1 to 5 percent of glycerol and 1 to 5 percent of 1, 3-propylene glycol. The cleaning agent is prepared from the following components in percentage by weight: 1 to 5 percent of isooctyl palmitate, 1 to 10 percent of caprylic / capric triglyceride, 1 to 5 percent of butyl methoxy dibenzoylmethane, 1 to 5 percent of shea butter, 0.1 to 5 percent of sodium chloride, 0.1 to 5 percent of hexanediol and 0.1 to 5 percent of p-hydroxyacetophenone. Under the synergistic effect of the antioxidant hydroponic oil and the soothing and repairing hydroponic oil, the SPF value of the lipstick reaches 50 or above, and a very good sunscreen effect is achieved.

The invention belongs to the technical field of ultraviolet light absorbers, and particularly relates to an ultraviolet light absorber and a preparation method thereof.The preparation method comprises the following steps that S1, in an oxygen-free atmosphere, 2, 4-dihydroxybenzophenone, potassium carbonate and N, N-dimethylformamide are evenly mixed, chlorodibenzoylmethane is added, and heating reaction is conducted; cooling the reaction liquid to room temperature, pouring into water, adjusting the pH value to 7-8, extracting, washing, drying, and passing through a chromatographic column to obtain a compound A; s2, uniformly mixing a compound A, an emulsifier and a polylysine solution, dropwise adding a sodium carboxymethyl cellulose solution, adjusting the pH value to 5-6, and carrying out a reaction; s3, adding a glutaraldehyde solution into the system in the step S2, adjusting the pH value to 6-8, and carrying out a reaction to obtain a reactant; and centrifuging the reactant, removing the supernate, carrying out suction filtration, washing with water, and drying to obtain the ultraviolet light absorber. The ultraviolet light absorber provided by the invention has excellent absorption performance.

Perfumed composition comprising at least one sulfur-containing antioxidant compound, at least one organic UV filter, and at least one perfumer. The present invention relates to a perfumed composition, particularly a cosmetic one, comprising a) at least one sulfur-containing antioxidant compound selected from compounds of formulas (I) R1-S-R2 and / or (II) R1-SS-R2, b) at least one organic UV filter selected from dibenzoylmethane derivatives, and c) at least one perfumer. Figure for the abstract: None

The invention discloses a liquid barium-zinc stabilizer and a preparation method and application thereof, and the liquid barium-zinc stabilizer is prepared from the following raw materials in parts by weight: 5-15 parts of oleic acid, 5-20 parts of p-tert-butylbenzoic acid, 2-8 parts of isocaprylic acid, 5-10 parts of diethylene glycol butyl ether acetate, 5-10 parts of cycloalkane, 5-10 parts of D80, 2-5 parts of zinc oxide, 4-10 parts of barium hydroxide monohydrate, 10-20 parts of barium salt and 2-6 parts of dibenzoylmethane. 15-25 parts of phenol-free phosphite ester and 2-6 parts of an antioxidant. The liquid barium-zinc stabilizer prepared by the invention cannot be subjected to curing reaction with an adhesive to cause degumming, and has excellent heat resistance and heat-resistant stability.

The invention discloses a thermostable composition, a polymer material composition and a preparation method and application thereof. The thermostable composition provided by the invention comprises 0.5-2 parts by weight of a bimetallic complex, 0.05-1 part by weight of an antioxidant, 0.5-2 parts by weight of a lubricant and 0.1-0.9 part by weight of an auxiliary stabilizer, central atoms of the bimetallic complex are rare earth elements and transition metal elements, and a ligand of the bimetallic complex is alkyl dithiocarbamate; the transition metal element is selected from one or more of aluminum, zinc, magnesium, tin and nickel; the auxiliary stabilizer is selected from one or more of phosphite ester, dipentaerythritol ester, epoxidized soybean oil, dibutyl maleate, dibenzoylmethane and hydrotalcite. The heat stabilizer can effectively improve the heat stability of a polymer material, and has relatively small balance torque.

The invention relates to the technical field of air buffer tanks, and discloses an air buffer tank for dibenzoylmethane production, which comprises a tank body, a drain valve is fixedly connected to the center of the bottom of the tank body, the bottom end of the drain valve is connected with a bent pipe through a bolt, one end of the bent pipe is in threaded connection with a drainage assembly, and an air outlet pipe is fixedly connected to the top of the tank body. The top of the air outlet pipe is connected with an air delivery pipe through bolts, and the bottom end of the air delivery pipe is connected with an exhaust valve through bolts. When water exists in the tank body, the water can automatically enter the bent pipe and then enter the barrel body through the straight pipe, the connecting pipe and the water drainage hole, the water can enable the hollow ball to rise so that the first sealing plug can be pulled out of the through hole of the partition plate, and therefore the water can be automatically discharged from the water outlet nozzle; and after the water is completely discharged, the gas enters the cylinder body and acts on the hollow ball, so that the first sealing plug is driven to be plugged into the through hole of the partition plate again, and the whole structure can realize automatic water discharging to prevent loss caused by gas leakage.

The present invention relates to a fragrance enhancing composition, in particular a cosmetic composition, comprising a) at least one sulfur-containing antioxidant compound selected from compounds of the formula (I) R1-S-R2 and / or (II) R1-S-S-R2, b) at least one organic UV screening agent selected from dibenzoylmethane derivatives; and c) at least one aroma enhancing substance.

This invention relates to a weather-resistant and anti-aging coating for coastal port cranes and its preparation method, belonging to the field of coating materials technology. The coating comprises component A and component B; component A includes an isocyanate-terminated prepolymer, a tri(dibenzoylmethane) ytterbium(III) complex, a spiropyran derivative, and additives; component B is obtained by dissolving isophorone diamine and 2,2'-diaminodiphenyl disulfide in ethyl acetate solvent, with a solid content of 40-60 wt%, and a molar ratio of isophorone diamine to 2,2'-diaminodiphenyl disulfide of (1-4):1; the molar ratio of isocyanate groups in component A to imino groups in component B is (1-1.05):1. This invention accelerates the exchange of dynamic disulfide bonds by constructing a photothermal conversion system, thereby enhancing the coating's ability to dissipate mechanical stress under ultraviolet light irradiation and simultaneously imparting long-term weather resistance to the coating.

This water-in-oil emulsion composition contains a dibenzoylmethane derivative (A) and a metal oxide powder (B) hydrophobized with a non-silicone-based substance, but does not substantially contain elemental aluminum.

The invention relates to the field of decolorization devices, and discloses a decolorization device for producing dibenzoylmethane. The device comprises a bottom plate, a filter barrel is fixedly mounted on the top of the bottom plate, a cover opening device is fixedly mounted on the top of the filter barrel, the cover opening device comprises a bottom cover fixedly mounted on the top of the filter barrel, a top cover is arranged on the top of the bottom cover, and a filter device is slidably mounted at the center of the top cover. The invention forms a cavity by lifting and lowering an upper filter element and a lower filter element inside the filter device, so that a reaction liquid and activated carbon powder are fully combined. When the reaction liquid and the activated carbon are decolorized, when the reaction liquid flows out from the inside of the filter barrel, no activated carbon powder remains in the reaction liquid, and a stirring component stirs the activated carbon inside the cavity surrounded by the upper filter element and the lower filter element, so as to improve the decolorization speed and sufficiency of the activated carbon and the reaction liquid, and isolate the reaction liquid and the activated carbon powder after the decolorization is completed, so that the activated carbon powder is conveniently replaced, the inside of the filter barrel is not polluted, and the cleaning difficulty is reduced.

A geopolymer composite including a porous aluminosilicate material, a quaternary ammonium surfactant, and a hydrophobicity modifier that includes dibenzoylmethane. The quaternary ammonium surfactant occupies sodium (Na) vacancies in the porous aluminosilicate material, and the hydrophobicity modifier is disposed on the quaternary ammonium surfactant.

The invention relates to the technical field of chemical synthesis, in particular to a tetranuclear dysprosium-based metal-organic framework material and a preparation method and application thereof. A chemical formula of the tetranuclear dysprosium-based metal-organic framework material is [Dy4 (dbm) 2 (H2L1) 2 (HL2) 2 (CH3O) 2]. 6CH3OH, H4L1 is N '2, N' 6-bis ((E)-3, 5-di-tert-butyl-2-hydroxybenzylidene) pyridine-2, 6-dicarbohydrazide, H3L2 is (E)-N '-(3, 5-di-tert-butyl-2-hydroxybenzylidene)-6-(hydroxymethyl) pyridine hydrazide, and Hdbm is dibenzoylmethane; the tetranuclear dysprosium-based metal-organic framework material crystal belongs to a monoclinic system and a C2 / c space group. The preparation method of the chiral phosphine nickel (II) complex is simple and convenient to operate, high in purity and good in reproducibility. The tetranuclear dysprosium-based metal-organic framework material disclosed by the invention is good in thermal stability, shows good catalytic performance in a cycloaddition reaction for synthesizing cyclic carbonate through CO2 catalytic conversion, and has a good application prospect.

Composite comprises polymer and lanthanide complex Au+[Ln(L1)w(L2)x(L3)y(L4)z)]-u. A is a metal cation, preferably potassium. Ln is a lanthanide, preferably Europium. L1, L2, L3, L4 are dibenzoylm

The present invention relates to a kind of preparation method of 1,3 diphenyl acetone, dibenzoylmethane and N bromosuccinimide, react under the condition of adding DMSO, and N2 is passed through during the reaction; After the reaction is completed, extraction, the lower layer of extraction solution is rotary evaporated to obtain a yellow solid, and 1,3 diphenyl acetone is prepared. Extractant is extractant A extractant B system; The extractant A is any one of sodium chloride solution, sodium nitrate solution, potassium chloride solution, and potassium nitrate solution; The extractant B is any one of dichloromethane, chloroform, and acetonitrile, and the concentration of the extractant A is at least 15wt%. By a specific extractant system, DMSO can be efficiently removed, greatly improving the purity of 1,3 diphenyl acetone. Meanwhile, the present invention also discloses that the aforementioned method obtains 1,3 diphenyl acetone, a photoinitiator system comprising the 1,3 diphenyl acetone, and a photopolymerization system.

The invention relates to the technical field of high polymer materials, and discloses a preparation method and application of a high-weather-resistance chlorinated polyethylene rubber and plastic material. The preparation method comprises the following steps: adding 1-butyl-3-methylimidazole acetate; cerium trifluoromethanesulfonate; dibenzoyl methane; the invention further provides a preparation method of the high-weather-resistance chlorinated polyethylene rubber and plastic material, and the preparation method comprises the following steps: firstly, preparing each stabilizer into a uniform liquid premixed master batch, and then carrying out melt blending on the liquid premixed master batch and resin, so that effective construction of a micro-reaction region is ensured. Through the synergetic stable system, intelligent response and long-acting catalysis of a stable function are realized, the problems of easy migration, non-uniform dispersion and short action period of a traditional auxiliary agent are fundamentally solved, the material is endowed with excellent long-term weather resistance and color stability, and the material is suitable for preparing products such as outdoor profiles and pipes.

The invention relates to a process for separating alkali metal from an aqueous solution by using a beta-diketone eutectic solvent. According to the process, a deep eutectic solvent synthesized by trioctylphosphine oxide and thiophenoyl trifluoroacetone as well as dibenzoylmethane and benzoyl trifluoroacetone in a molar ratio of 1 is used as an extracting agent, and simulated brine containing alkali metals such as lithium, sodium and potassium is used as an extraction water phase. The optimal extraction agent and pH conditions are screened out by investigating the extraction efficiency of the extraction agent on metal ions in different acid-base environments; the optimal extraction process conditions are researched by changing the extraction temperature, the extraction time, the stirring rotating speed and comparison. A large number of metal ions are loaded on the organic phase after the extraction experiment is finished, the research of the back extraction experiment is carried out by adopting 1.5 M LiCl and 0.3 M HCl under the condition that the phase ratio is 1, a high-purity LiCl solution is finally obtained, and the organic phase after the back extraction experiment is finished can be washed by a NaOH solution to be subjected to multiple circulation experiments. According to the method, the eutectic solvent is used as the extraction agent, the method has the advantages of being simple in synthesis, convenient to operate and low in cost, the extraction agent can be recycled after extraction, the production cost is effectively reduced, and the resource utilization rate is increased.

The invention relates to the field of textile fabrics, in particular to an ice-feeling anti-ultraviolet functional fabric and a preparation process thereof.The ice-feeling anti-ultraviolet functional fabric is formed by interweaving modified polyester warps and modified polyester wefts, and the fabric is padded through an anti-ultraviolet finishing solution; wherein the anti-ultraviolet finishing solution is prepared from functional dibenzoylmethane, polyurethane emulsion, N, N-dimethylformamide and butyl acetate according to the weight part ratio of 1: 3: 1: 1. According to the ice-feeling anti-ultraviolet functional fabric and the preparation process thereof, the obtained fabric is soft and comfortable, has low UVA transmittance and can achieve an ice-feeling effect.

The invention provides silicon dioxide composite nanoparticles as well as a preparation method and application thereof. The silicon dioxide composite nanoparticles comprise cationic polyelectrolyte modified silicon dioxide nanoparticles as well as resveratrol and an ultraviolet absorbent which are sequentially loaded on the outer layer of the cationic polyelectrolyte modified silicon dioxide nanoparticles, the ultraviolet absorbent is prepared from any one or a combination of at least two of bis-ethyl hexyloxyphenol methoxyphenyl triazine, methylene bis-benzotriazolyl tetramethyl butyl phenol, diethylamino hydroxybenzoyl hexyl benzoate or butyl methoxy dibenzoyl methane. The ultraviolet absorbent plays a role in sun protection externally and shields ultraviolet rays to improve the light stability of the resveratrol, the resveratrol plays a role in oxidation resistance internally and quenches free radicals to improve the light stability of the ultraviolet absorbent, and the ultraviolet absorbent and the resveratrol cooperate to achieve the dual functions of ultraviolet full-wave band efficient protection and free radical scavenging.

The present invention relates to dibenzoylmethane compound precursors having an amide group in one ring and their corresponding photoconverting compounds, their pharmaceutically or cosmetically acceptable salts, or a stereoisomer of any one of them or mixtures thereof, for use in protecting human or animal living bodies or materials from ultraviolet radiation. The invention also relates to a process for the preparation thereof, and to cosmetic or pharmaceutical or personal care compositions thereof.

The invention relates to the technical field of stabilizers, in particular to a stabilizer for a transparent PVC (polyvinyl chloride) product and a preparation method and application thereof, and the stabilizer at least comprises the following components in parts by weight: 10-18 parts of organic acid calcium zinc, 8-15 parts of an auxiliary stabilizer, 5-12 parts of an antioxidant, 4-10 parts of a lubricant, 30-55 parts of hydrotalcite and 10-25 parts of polyvinyl chloride. The auxiliary stabilizer at least comprises stearoylbenzoylmethane, dibenzoylmethane and tris (2-hydroxyethyl) isocyanurate, the sum of the addition amount of the organic acid calcium zinc and the tris (2-hydroxyethyl) isocyanurate is smaller than or equal to 26 parts by weight, and through the combined action of the multiple components, the provided product has the advantages of environmental protection, high transparency, excellent thermal stability and wear resistance; the application defect of the calcium-zinc stabilizer in transparent PVC products is effectively overcome, and the actual application requirement is better met.

The invention belongs to the technical field of organic tin heat stabilizers, and discloses a solid organic tin composite heat stabilizer process formula which comprises the following components in percentage by weight: 40% of di-n-octyltin maleate, 40% of di-n-octyltin dilaurate, 3% of dipentaerythritol, 5% of tris (2, 4-di-tert-butyl) phenyl phosphite, 5% of beta-(3, 4-di-tert-butyl) phenyl phosphite, 5% of 2, 4-di-tert-butyl-phenyl)-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5- The invention relates to a solid organic tin composite heat stabilizer, which comprises the following components in percentage by weight: 5% of 2, 5-di-tert-butyl-4-hydroxyphenyl) octadecanol propionate, 2% of 6-amino-1, 3-dimethyluracil, 2% of dibenzoylmethane, 1.5% of 1, 3-diphenylpropanedione and 1.5% of stearoylbenzoylmethane. The heat stability, the light stability, the oxidation resistance and the processability of the PVC product can be effectively improved, the service life of the PVC product is prolonged, the industrial application value and the economic benefit are remarkable, and actual application and operation are facilitated.

This invention discloses a class of eight-coordinate europium(III) complexes using deuterated phenanthroline derivatives as ligands and their preparation method, belonging to the field of organic semiconductor luminescence technology. The complexes have the structural formula shown in formula (I). This type of material uses D₂O for deuteration to synthesize [D₈]-1,10-phenanthroline ligands and [D₁₀]-dibenzoylmethane ligands, which are then complexed with europium trichloride hexahydrate. When X is H, an eight-coordinate europium(III) complex [D₈]-Eu(DBM)₃Phen is synthesized; when X is D, [D₈]-Eu([D₁₀]-DBM)₃Phen is synthesized. This type of complex uses phenanthroline with a deuterium azide conjugated structure as a ligand, allowing these europium(III) complexes to exhibit better thermodynamic stability and organometallic luminescence performance through stepwise deuteration.

The invention belongs to the field of ultraviolet absorber technology, and in particular to a kind of ultraviolet absorber and preparation method thereof, comprise the following steps: S1: in an oxygen-free atmosphere, 2,4-dihydroxybenzophenone, potassium carbonate and N, N-dimethylformamide are mixed, chlorodibenzoylmethane is added, temperature reaction is warmed up;Reaction solution is cooled to room temperature, poured into water, pH is adjusted to 7-8, extraction, washing, drying, compound A is obtained through chromatographic column;S2: compound A, emulsifier and polylysine solution are mixed, sodium carboxymethyl cellulose solution is added dropwise, and reacted after adjusting pH to 5-6;S3: glutaraldehyde solution is added to the system of step S2, reacted after adjusting pH to 6-8, and reactant is obtained;Reactant is centrifuged, supernatant is removed, suction filtration, washing, drying, ultraviolet absorber. The ultraviolet absorber provided by the present invention has excellent absorptive properties.

The invention belongs to the technical field of functional materials, and provides a photochromic material and a preparation method and application thereof. The preparation method comprises the following steps: mixing polyvinyl alcohol, glyoxylic acid, a catalyst and water, and reacting to obtain a polymer; mixing the polymer, phenanthroline, dibenzoylmethane, EuCl3, a cross-linking agent and a first organic solvent, and reacting to obtain an intermediate product; and dissolving the intermediate product in a second organic solvent, and carrying out spray drying to obtain the photochromic material. The method is simple, high in yield and low in cost, and the photochromic material prepared by the method has excellent color changing capability and ultraviolet-proof capability, and also has capability of bearing multiple photochromic cycles, so that the durability of the photochromic material is greatly improved, and the service life of the color-changeable contact lens is further prolonged.

The present invention relates to a zirconium-based MOF adsorbent and a preparation method and application thereof, and belongs to the technical field of composite materials. The present invention utilizes an organic ligand DKTA generated by the reaction of 3-aminopyrazine-2-carboxylic acid and dibenzoylmethane (DBM), and combines the organic ligand DKTA with ZrCl4 to prepare a zirconium-based MOF adsorbent; the zirconium-based MOF adsorbent can be used for targeted removal of copper ions in a solution; the adsorption rate of the zirconium-based MOF adsorbent on copper ions can reach 99.84%, and after repeating 5 times, the adsorption rate of copper ions can also reach 91.65%.

The invention discloses a waste liquid treatment device for dibenzoylmethane preparation, and relates to the technical field of waste liquid treatment. Comprising a base plate, a first motor is fixedly mounted at the upper end of the base plate, a sealing plate is arranged at one end, close to the upper end, of the base plate, an isolation bin is fixedly connected to the middle of the bottom end surface of the sealing plate, and a protective sleeve is arranged at the lower end of the isolation bin. Through the arrangement of an isolation bin accessory structure, an extension rod close to the lower end can be driven to do reciprocating up-down and rotary motion in the operation process, so that waste liquid in the treatment bin is fully stirred up and down in cooperation with a protection sleeve accessory, it is ensured that waste liquid raw materials and added treatment liquid are fully mixed, and the layering phenomenon is avoided; meanwhile, the accessory structure of the protective sleeve can stir the waste liquid in an action similar to duck web paddling in the operation process, and the injected treatment liquid can be discharged from the deep part of the waste liquid, so that the mixing efficiency is further improved.