81 results about "Dibenzoyl methane" patented technology

A cosmetic composition is provided comprising a Gingko biloba extract, an alkyl β,β-diphenylacrylate and / or α-cyano β,β-diphenylacrylate derivative, and a dibenzoyl methane derivative. A cosmetic use of that composition is also provided for preventing sun damage and photo ageing.

The present invention discloses an organic europium compound based on functional o-phenanthroline ligand and its electroluminescence device. It is characterized by that it uses dibenzoyl methane (DBM) as first ligand and uses the o-phenanthroline neutral ligand having triarylamine functional group with hole transmission performance or having oxdiazole functional group with electronic transmission performance as second ligand; because of action of the functional o-phenanthroline neutral ligand the organic europium compound based on functional o-phenanthroline ligand has obviously-improved electrical performance and dispersion property in polymer material, so that said compound has high luminescent effect and luminance in the polymer electroluminescence device.

The present invention adopts dibenzoyl methane (DBM) or trifluoroacetyl-thiopheneacetone (TTA) matched with trivalent europium ion energy as first ligand, adopts 3,4,7,8-tetramethyl-1,10-phenanthroline as second ligand, then utilizeks the first ligand and second ligand according to mole ratio of 3:1 and the trivalent europium ion to form ternary europium compounding material, and makes the prepared red light rare earth organic compound material electroluminescent material into the electroluminescent device, its efficiency can be up to 4.7 cd / A, and maximum luminance is 800 cd / sq.m.

The invention relates to a blue-light-resistant and anti-ultraviolet cosmetic raw material, a preparation method thereof and an application of the raw material. The cosmetic raw material comprises Arabian jasmine flower extracts, pale butterflybush flower extracts, bisabolol, glycerin, water, propylene glycol, titanium dioxide, cyclopentasiloxane, isohexadecane, polydimethylsiloxane, petrolatum, 1, 2-hexanediol, butyl methoxy dibenzoyl methane, Xanthan gum and the like. Plants containing natural active components are extracted to form an all-optical protection cosmetic, the cosmetic contains various nourishing components, is lightsome, breathable, fine, smooth, textured, soft, moist and nourished, can form a clear isolated layer on the surface of a skin and has excellent functions of resisting blue light, ultraviolet ray and oxidation and the like, interference of dust, haze, make-up products and the like to the skin is avoided, delicate skins are protected moment by moment, and all-weather protection is provided for the skin. The all-optical protection cosmetic is remarkable in effect, good in stability, convenient to use and high in universality and has wide application values.

The invention provides a calcium and zinc heat stabilizer for PVC and application of the calcium and zinc heat stabilizer. The calcium and zinc heat stabilizer is prepared from 50-80 parts of main stabilizer and 20-50 parts of auxiliary stabilizer. The main stabilizer is prepared from 10-50 parts of quinolone zinc salt and 10-70 parts of quinolone calcium salt. The auxiliary stabilizer is a compound prepared from one or two or more of triphenyl phosphite, epoxidized soybean oil, 2-ethylhexyl epoxystearate, pentaerythritol, dipentaerythritol, sorbitol, trimethylolpropane, dibenzoyl methane, stearoylbenzoylmethane and uracil according to any proportion. The calcium and zinc heat stabilizer for PVC has good PVC heat stabilizing performance and meanwhile has the excellent surface bacterium resisting function.

The invention relates to an iridium complex provided with novel main ligands and using acetylacetone or dibenzoyl methane as an auxiliary ligand. The main ligands in iridium complex molecules are 2,3-diphenyl quinoxaline, 2,3-diphenyl pyridine[2,3-b]pyrazine, 2,3-diphenyl pyrazine[2,3-b]pyrazine, dibenzo[a,c]phenazine and a bipyridino[3,2-a: 2', 3'-c] phenazine derivative. The novel iridium complex has the advantages of high luminous efficiency, stable chemical properties, easy sublimation purification and the like, and the device performance is also excellent. By modifying molecular structures of the ligands, the luminous intensity and efficiency of the complex can be adjusted within a red light wavelength range, and convenience is provided for design and production of organic electroluminescent displays and lighting sources.

An Eu-organic metal match used as organic electroluminescent material is prepared through preparing europium chloride from europium oxide, respectively dissolving europium chloride, dibenzoyl methane and 1, 10-O-phenanthroline in alcohol, mixing at 70+ / -5 deg.C, adding alkali twice for regulating pH value, reaction, washing three times, filtering, baking, recrystallizing three times and vacuum filter.

The invention discloses an organic phase electrolyte and an application thereof in a negative electrode of a redox flow battery. The organic phase electrolyte consists of active materials, a supporting electrolyte and an organic solvent, wherein the active materials are diphenyl ketone and a derivative thereof, anthrone and a derivative thereof, or dibenzoyl methane and a derivative thereof; the supporting electrolyte is selected from tetraethylammonium hexafluorophosphate, tetraethylammonium tetrafluoroborate, tetrabutylammonium hexafluorophosphate or tetrabutylammonium tetrafluoroborate; and the organic solvent is selected from acetonitrile, tetrahydrofuran, propylene carbonate, ethylene carbonate, dimethyl sulfoxide, dimethylformamide, glycol dimethyl ether or ethylene glycol diethyl ether. The organic phase electrolyte disclosed by the invention has relatively low electrochemical potential and high electrochemical property; when the organic phase electrolyte is used as the negative electrode electrolyte of the redox flow battery for assembling an organic phase redox flow battery, relatively high open-circuit voltage can be realized, so that the energy density of the battery can be improved; and meanwhile, the capacity fading of the battery can be lowered, so that the cycle life of the battery can be prolonged.

The invention relates to a preparation method for 4- tertiary butyl-4'-methoxy dibenzoyl methane, which belongs to the technical field of fine chemical engineering. The preparation method for the 4-tertiary butyl-4'-methoxy dibenzoyl methane comprises the following steps of: (1) evenly mixing p methoxy acetophenone with solvent; (2) evenly mixing p-tert-butylbenzoic acid methyl ester with the solvent, adding sodium methoxide or sodium ethylate accounting for 60-100wt% of the p methoxy acetophenone, heating to 40-100DEG C, dropwise adding the p methoxy acetophenone solution, finishing dropwise adding until the mass ratio of the p methoxy acetophenone to the p-tert-butylbenzoic acid methyl ester is 0.6-2.0, and continuing to carry out insulation reaction; (3) after reaction is complete, obtaining a crude product, regulating the pH (potential of hydrogen) of the obtained crude product to be less than or equal to 5, carrying out dissolved clarification after stirring, washing with water, and layering; and (4) after solvent is removed from the material washed with water, adding methyl alcohol to dissolve, decoloring by activated carbon, repeatedly adding the methyl alcohol, and refining again to obtain the product. The preparation method for the 4-tertiary butyl-4'-methoxy dibenzoyl methane has the advantages of high molar yield and moderate reaction condition and is suitable for industrial production.

The invention relates to a novel method for efficiently synthesizing dibenzoylmethane. The product (dibenzoylmethane) is non-toxic, tasteless and widely used in PVC (polyvinyl chloride) plastics and ABS (acrylonitrile butadiene styrene) resins. The invention belongs to preparation of compounds containing C0 groups and only connecting carbon or hydrogen atoms, in particular relates to preparation of beta-dione. The method is characterized in that the dibenzoylmethane is prepared from methyl benzoate and acetophenone through a condensation reaction in an alkaline environment. The methyl benzoateis prepared from benzoic acid and methanol as raw materials and sulfuric acid as a catalyst through an esterification reaction. The main raw material, namely the methyl benzoate, of the target product, namely dibenzoylmethane, of the method, is prepared through a self-designed process, a catalyst, namely sodium methoxide, of the condensation reaction, is prepared according to the self-designed process, and technological conditions of the key steps of the condensation reaction for synthesizing the dibenzoylmethane are optimized. The invention provides the method for preparing the dibenzoylmethane with low raw material cost, a short condensation reaction period, few by-products, a high yield of dibenzoylmethane, complete solvent recovery and an excellent capability for improving photothermal stability of a thermoplastic resin. The condensation yield is 85%, and the crystallization yield is 95%.

The invention discloses a one-kettle continuously step-by-step synthesized calcium zinc composite stabilizer, which relates to the technical field of plastic additives. The preparation process of the stabilizer comprises the following steps: 1, adding fatty acid and then adding zinc oxide, calcium hydroxide and an auxiliary stabilizer into a kneading kettle in sequence in a kneading kettle and synthesizing continuously in two or more steps; and 2, heating and melting the fatty acid in a reaction kettle at 60-80 DEG C; adding zinc oxide and a catalyst under the condition that the stirring speed is 80-150rpm and the reaction temperature is 120-130 DEG C; adding the calcium hydroxide at the reaction temperature of 140-150 DEG C at the end of the first step of the reaction; after the reaction is finished, adding ternary hydrotalcite, stearoylbenzoylmethane or dibenzoyl methane, high-epoxy-value epoxidized soybean oil, polyethylene wax or phosphorous acid ester, pentaerythritol ester or polypentaerythritol ester, antioxidant and the like in sequence, uniformly mixing, tableting and crushing to obtain the PVC (Polyvinyl Chloride) calcium zinc composite stabilizer. The stabilizer has the advantages of strong controllability, high stability, high yield and high efficiency.

The invention discloses a D-A-D cyclometalated iridium complex near-infrared luminous material based on aryl quinoxaline. The near-infrared cyclometalated iridium (III) complex comprises a D-A-D C^N cyclometalated ligand taking aryl quinoxaline as an electron acceptor (A) unit and an electron-rich substituent group as an electron donor (D) unit, and an acetylacetone, dibenzoyl methane and pyridinecarboxylic acid auxiliary ligand. The material can emit strong near-infrared light with luminous wavelength greater than 700nm and is high in fluorescence quantum efficiency; an aggregation state isadjustable; the highest external quantum efficiency of a doped polymer electroluminescent device reaches 6.2%; and the highest irradiance of the device is 1416 microwatts / Sr / cm<2>.

The invention discloses a stabilizer for PVC sheets and a preparation method thereof. The stabilizer for PVC sheets is prepared from the following raw materials by weight: 1-10 parts of a main stabilizer A, 10-15 parts of a main stabilizer B, 35-55 parts of an auxiliary stabilizer C, 1-10 parts of an auxiliary stabilizer D, 5-10 parts of an antioxidant, 3-15 parts of a lubricant, 1-15 parts of a chelating agent, and 1-5 parts of an impact resistant agent. Specifically, the main stabilizer A is at least one of calcium stearate, strontium stearate and calcium benzoate; the main stabilizer B is at least one of zinc stearate, lanthanum stearate and zinc benzoate; the auxiliary stabilizer C is at least one of magnesium-aluminum hydrotalcite and magnesium-aluminum-zinc hydrotalcite; and the auxiliary stabilizer D is at least one of dibenzoyl methane, stearoyl benzoyl methane and dodecyl dihydropyridine diformate. The stabilizer prepared according to the invention has the advantages of no toxicity, environmental protection, no odor, fast plasticization, high product transparency, good weather resistance and good ultraviolet aging resistance.

The invention discloses a heteronuclear bimetallic complex light-emitting material. The invention also discloses a preparation method of the light-emitting material and application of the light-emitting material and aims at providing a material which is high in thermal stability, high in light stability and relatively high in light-emitting efficiency. The technical point is that the metal complex is provided with a structural formula which comprises an Al atom, an Eu atom, an 8-hydroxyquinoline and phenanthroline dual-ligand, two phenanthroline ligands and three dibenzoyl methane ligand, wherein the 8-hydroxyquinoline in the dual-ligand and the ligand 8-hydroxyquinoline are in coordination with a central atom Al together; and the phenanthroline dibenzoyl methane is in coordination with rare-earth metal europium. The heteronuclear bimetallic complex light-emitting material belongs to the technical field of light-emitting materials.

The invention provides a sunscreen mist spray which comprises the following raw materials: methoxy-cinnamic acid ethylhexyl acrylate, octocrilene, bi-ethyl hexyloxyphenol methoxyphenyl triazine, butylmethoxy-dibenzoyl methane, natural phospholipid, absolute ethyl alcohol, titanium dioxide, zinc oxide, polydimethylsiloxane, polydimethylsiloxane, an emulsifier, 1,2-pentanediol, disodium hydrogen phosphate, sodium alginate, mannitol, sodium hyaluronate and water. A preparation method comprises the following steps: firstly, preparing lipidosome from chemical sunscreen agents, and together with physical sunscreen agents, preparing the sunscreen mist spray. By adopting the sunscreen mist spray, on one hand, irritation of the chemical sunscreen agents to skin can be reduced, on the other hand, the sunscreen agents can be uniformly clung to the surface of skin, the action time of the chemical sunscreen agents is prolonged, the overall sunscreen effect of the mist spray is greatly improved, and the use amount of the mist spray can be reduced.

A calcium-zinc liquid stabilizing agent is composed of, by weight, 80-112 parts of calcium hydroxide, 20-45 parts of zinc oxide, 32-56 parts of oleic acid, 12-32 parts of isocaprylic acid, 15-25 parts of nonyl phenol, 17-26 parts of triethylene glycol, 23-45 parts of benzoic acid, 25-30 parts of p-tert-butyl benzoic acid, 13-24 parts of white oil, 10-15 parts of solvent oil, 11-18 parts of D40 oil, 10-14 parts of H80 oil, 15-25 parts of aviation kerosene, 14-20 parts of triphenyl phosphite, 5-10 parts of diisooctyl phenyl phosphite, 3-7 parts of monoisooctyl diphenyl phosphite, 45-56 parts of bisphenol A, and 11-15 parts of dibenzoyl methane. The calcium-zinc liquid stabilizing agent has complete reaction and avoids introduction of impurities during production of PVC products, and improves the sanitary property, heat resistance and processability of the products.

The invention discloses a preparation for dibenzoyl methane. A condensation reaction is carried out in a methylbenzene solution by using acetophenone and methyl benzoate as raw materials and using sodium hydride as a catalyst under the environment of nitrogen protection and at the temperature of 0-50 DEG C; a reaction liquid is subjected to pickling, alkali washing, rinsing, solvent recycling, recrystallizing, filtering, and drying, so that the product can be obtained. According to the invention, the reaction condition is moderate, the industrial energy consumption is reduced, the catalyst activity is guaranteed, and the product yield and purity are improved.

The invention relates to sunscreen spray which comprises, in weight percent, 1-9.5% of titanium dioxide, 2-10% of octyl methoxycinnamate, 0.5-7.5% of methylene dibenzo-triazolyl tetramethyl butylphenol and 0.1-5% of butyl methoxyl dibenzoyl methane. Physical sunscreen agents (the titanium dioxide) and chemical sunscreen agents (the octyl methoxycinnamate, the methylene dibenzo-triazolyl tetramethyl butylphenol and the butyl methoxyl dibenzoyl methane) are compounded to prepare the sunscreen spray, so that the sunscreen spray has good skin feelings and sunscreen effects.

The invention discloses a compound rare-earth calcium zinc heat stabilizer which comprises a main stabilizer and an auxiliary stabilizer, wherein the main stabilizer comprises the following components: 3,7-dimethyl-2,6-octadienoic acid rare earth, calcium stearate and zinc laurate; the auxiliary stabilizer comprises the following components: dibenzoyl methane, triphenyl phosphite, distearyl thiodipropionate, dihendecyl phthalate and epoxy soybean oil. The invention further provides a preparation method and a use method of the composite rare-earth calcium zinc heat stabilizer. The preparation method comprises the following steps: oxidizing citral in litsea cubeba oil to obtain 3,7-dimethyl-2,6-octadienoic acid, and reacting with rare earth chloride to prepare the 3,7-dimethyl-2,6-octadienoic acid rare earth; compounding the 3,7-dimethyl-2,6-octadienoic acid rare earth, calcium stearate and zinc laurate to generate a good synergistic effect so as to obtain the compound rare-earth calcium zinc heat stabilizer with excellent performance.

The invention relates to a method for preparing fluorescent nanofibers based on photo-grafting surface modification. The method comprises the following steps: performing blending electrospining on a photoinitiator with light-sensitive activity and a high polymer, and preparing the nanofiber with light-sensitive activity; enabling europium ion, acrylic acid and dibenzoyl methane to react to form a polymerizable rare earth organic ligand; finally, immersing the light-sensitive nanofibers in an europium ion ligand solution, grafting the europium ion ligand to the surface of the nanofiber through a photo-polymerization grafting method, and preparing to obtain the nanofibers with fluorescence properties. The prepared nanofibers have extremely large specific surface area, and fluorescent ligands are enriched on the surfaces of the nanofibers, so the nanofibers have high fluorescence activity. The prepared nanofibers have high application values in the field of preparation of light-sensitive materials or optical sensors.

The invention discloses an isolated sunscreen composition which comprises an ultraviolet light absorbent, an antioxidant and a calming and soothing agent, wherein the ultraviolet light absorbent comprises one or more of a white tea extract, ultra-fine nanometer titanium dioxide, nanometer zinc oxide, ethylhexyl salicylate, butyl methoxy dibenzoyl methane and rutin. The isolated sunscreen composition disclosed by the invention has the beneficial effects that the ultraviolet light absorbent added in the isolated sunscreen composition can absorb ultraviolet light and reduce the damage caused by the ultraviolet light to skin; the antioxidant added can remove free radicals and reduce the oxidative damage; the calming and soothing agent added can clam and sooth the skin and strengthen the ability to protect against ultraviolet radiation; by cooperated use of all the components, the isolated sunscreen composition can realize a good isolated sunscreen effect and give cosmetics a significant isolated sunscreen effect when being applied to the cosmetics, so that the skin is better protected.

The invention discloses sun-resistant clothes. The sun-resistant clothes are made of sun-resistant nylon fibers. The sun-resistant nylon fibers are prepared from, by weight, 80-120 parts of polyester fibers, 10-30 parts of nano-titanium dioxide, 0.5-2 parts of 2,2',4,4'-tetrehydroxybenzophenone, 1-3 parts of dibenzoyl methane, 2-5 parts of 4-nitrophthalimide, 0.6-2 parts of softening agent and 0.2-1 part of antioxidant. The produced sun-resistant clothes have a good anti-ultraviolet function and still have the good anti-ultraviolet function after being washed multiple times.

The invention relates to a method for purifying by-product sodium chloride in dibenzoyl methane production. The method includes steps of, step one, using the by-product sodium chloride in the dibenzoyl methane production as a raw material, and calcining the by-product sodium chloride in a tunnel kiln at the temperature of 450-500 DEG C for 20-30 minutes; step two, placing solids obtained from the calcination into water for dissolving to obtain a solution, keeping the temperature of the solution to be 60-80 DEG C, standing the solution until calcined residues in the solution are precipitated and black particles float on the solution surface, separating lower layer precipitate and the black particles floating on the solution surface, and taking a clear liquor; step three, concentrating and steaming the clear liquor, and then performing cooling and crystallizing; and step four, performing centrifugal filtration to obtain crystal particles, and drying the crystal particles to obtain the finished sodium chloride.

The present invention discloses one kind of organic rare earth (RE) compound fluorescent material and its preparation and application. The present invention selects organic methyl trialiphatic amide chloride and beta diketo dibenzoyl methane as ligand and makes the organic RE compound has a diketone content lower than 40%. By means of common organic synthesis process, organic RE fluorescent compound with high efficiency, high brightness, high stability and long service life and to luminance with red light is obtained. The solid power of the present invention may be added into solid or flowingmaterial to act as display or special mark material.

The invention relates to an oxidized graphite / rare-earth stabilizing agent used in PVC and a preparation method thereof; wherein the stabilizing agent comprises according to the parts by weight: 50-80 of oxidized graphite, 1-40 parts of organic rare-earth salts, 200-500 of dispersive medium, 1-20 of surface modification, and 10-50 of assistant stabilizing agent. The rare-earth salts are obtained by organizing lanthanide series inorganic rare-earth salts and long-chain fatty acids. The dispersive medium is water or ethanol. The surface modification is pentaerythritol ester, triple phenoxyl phosphorus or acrylic ester. The assistant stabilizing agent is dibenzoyl methane, stearic acid, polyethylene wax or compound thereof. The invention has super high thermal stability, good thermal conductivity and chemical durability and good interface adhesive property with resin, high self lubricity, good ultraviolet absorption performance, strong ultraviolet radiation absorption capabilitly and obvious reinforcement effect.

The invention discloses polyolefin insulated cable material used for a rail transit vehicle and a preparation method thereof. The polyolefin insulated cable material is prepared by using the following raw materials by weight: 50-70 parts of high density polyethylene, 20-40 parts of ethylene-octylene copolymer, 15-25 parts of poly 4-methyl-1-pentene, 10-15 parts of dipropylene glycol dibenzoate, 4-6 parts of docosanamide, 3-5 parts of microcrystalline wax, 2-3 parts of zinc stearate, 1-2 parts of lanthanium stearate, 5-10 parts of epoxy linseed oil, 2-4 parts of isomaltitol, 3.5-4.5 parts of dibenzoyl methane, 15-20 parts of organic montmorillonite, 10-15 parts of brucite powder, 25-30 parts of nanometer spherical silica, 13-21 parts of hexabromocyclododecane, 11-19 parts of calcium phosphomolybdate, 10-15 parts of pentaerythritol polyphosphoric ester melamine, 2-4 parts of tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 1-3 parts of dioctadecyl thiodipropionate and 10-15 parts of modified stone powder. The cable material provided by the invention has high mechanical strength, excellent mechanical properties, excellent weather resistance, ageing resistance, temperature tolerance, fatigue resistance and fire resistance, is durable in use, is safe and reliable, and can meet cable-related requirements of the rail transit vehicle.

The invention discloses a flame resistant polypropylene cable material for urban rail transport and a preparation method thereof. The flame resistant polypropylene cable material is prepared from the following raw materials, by weight, 42-58 parts of polypropylene, 34-49 parts of polyetherimide, 18-27 parts of brominated polystyrene, 13-19 parts of ultrafine molybdenum powder, 8-14 parts of guaiac resin, 10-15 parts of epoxidized fatty acid methyl esters, 6-12 parts of diethylene glycol dibenzoate, 3-6 parts of Sasol wax, 2-4 parts of isopropyl myristate, 1-2 parts of stannous stearate, 4-8 parts of tri(2,3-dibromopropyl)tricarbimide ester, 15-20 parts of activated calcium carbonate, 5-10 parts of barium stannate, 2-3 parts of dibenzoyl methane, 15-20 parts of a composite flame retardant, 1-2 parts of an antioxidant 1135 and 1-2 parts of an antioxidant 330. The prepared cable material has good flame retardant efficiency and low smoke density, will not generate heavy smoke and harmful, toxic and corrosive gas when burned, is safe and environmentally-friendly, and has characteristics such as excellent physical and mechanical properties, electrical insulation property, fatigue resistance, heat resistance, weather fastness and the like.

The invention discloses a composition and its use in the preparation of an anti-inflammatory drug. The composition comprises silybin and dibenzoyl methane. Through combination of silybin and dibenzoylmethane, good inhibition effects on a lipopolysaccharide-induced macrophage inflammatory model are obtained and drug effects are obviously superior to that of the single medical ingredient. The composition has a low dosage in inflammatory treatment, significantly reduces the concentration of the single drug, reduces the toxic or side effects of the individual drug, reduces the damage to the humanbody and has a low price.