342 results about "Triethyl phosphate" patented technology

The present invention is directed to a fire retardant composition, comprising: a primer solution; expandable graphite particles; triethyl phosphate; and aluminum trihydrate, wherein the triethyl phosphate comprises from about 1 wt. % to about 15 wt. % based on the weight of the composition.

The invention relates to a novel environment-friendly flame-retarded unsaturated polyester resin and a preparation method thereof. The resin can be used in vehicles, constructions, electrical appliances and other glass fiber reinforced plastic parts requiring flame retardancy. In the environment-friendly flame-retarded unsaturated polyester resin, bibasic alcohol and dibasic acid or estolide are condensed into unsaturated polyester; the unsaturated polyester resin contains solid reactive phosphorus flame retardant and liquid phosphonium flame retardant, and the content of phosphorus element in the resin is not less than 4 percent of gross mass, wherein the reactive phosphorus flame retardant can be one or two of hydroxyphenylphosphinyl-propanoic acid and hydroxyphenylphosphinyl-ethanoic acid; and the liquid phosphonium flame retardant can be one or more of triethyl phosphate, triphenyl phosphate and dimethyl methyl phosphonate. Each substance in the resin can be directly melted and polymerized without a catalyst; the product does not require separating solvent, does not have the problem of environmental pollution, and reduces the production cost; and the flame retardant can be easily obtained without adding new equipment.

The invention relates to an adhesive remover and a preparation method thereof. The basic composition of the adhesive remover formula is as follows in percentage by weight: 12-25% of fatty alcohol-polyoxyethylene ether sodium sulfate and fatty alcohol-polyoxyethylene ether silane, 20-30% of alkylphenol polyoxyethylene ether, 4-5% of ethylene oxide/propane segmented copolymer, 5-7.9% of sodium chloride, 10-12% of triethyl phosphate and dimethyl adipate, 5-10% of tricarboxyl triethylamine, triethylamine, diethanol amine, EDTA, urea, triethanolamine and hexamethylene tetramine, 2-10% of ethylene glycol, butyl cellosolve, propylene glycol methyl ether, ethanol, isopropanol, benzyl alcohol and methyl isoamyl ketone and 0.1-42% of deionized water. Compared with the prior art, the invention has the advantages that the adhesive remover is aqueous and low irritating, is wide in application range, can rapidly remove various trade mark adhesives, eliminate adhesiveness, degrease, remove adhesive and deliquate adhering oil stain in the aspect of removing advertising posters on the surfaces of glass, ceramics, marbles, stainless steel, etc. The invention also provides an environment-friendly and safe method for preparing the adhesive remover.

The invention relates to a method for in-situ polymerization and modification of a polyvinylidene fluoride microporous membrane. In the method, polyvinylidene fluoride microporous is dissolved in triethyl phosphate at first to prepare membrane-forming precursor solution, active solution is added into the membrane-forming precursor solution for in-situ polymerization under nitrogen protection, the mixture is kept static for 18-36 hours at the reaction temperature after reaction, membrane casting solution is prepared via deaeration and is processed by a membrane forming machine to prepare a primary membrane, the primary membrane is soaked in a coagulating bath for 0-3 hour(s) and is then transferred into an deionized water bath to be immersed for 1-48 hour(s) so as to be cured into a membrane, the membrane is naturally dried in the air at the room temperature, and thus the dry hydrophilic polyvinylidene fluoride membrane is prepared. The method is environmentally friendly, the reaction conditions are mild, the preparation method is simple, modification and preparation are completed simultaneously, the repeatability is good, the method cannot be limited by the type of the microporous membrane, a high-flux separating membrane can be obtained with no needs for external pore-forming agents, and the prepared microporous membrane is a dry hydrophilic membrane.

The invention discloses a carboxylation graphene oxide/polyvinylidene fluoride compiste ultrafiltration membrane and a preparation method thereof. The carboxylation graphene oxide/polyvinylidene fluoride compiste ultrafiltration membrane is prepared by firstly, ultrasonically dispersing carboxylation graphene oxide in double solvents consisting of dimethylacetamide and triethyl phosphate, subsequently mixing with polyvinylidene fluoride, regulating the temperature to be 50-60 DEG C, mechanically stirring for dissolving, cooling to the room temperature, scraping a glass plate to form a membrane, soaking in deionized water for 3-5 days, and naturally drying in air, so as to obtain the carboxylation graphene oxide/polyvinylidene fluoride compiste ultrafiltration membrane. The carboxylation graphene oxide/polyvinylidene fluoride compiste ultrafiltration membrane disclosed by the invention is relatively good in hydrophilia and mechanical strength. The preparation method has the characteristics of simplicity, environment friendliness, easiness in condition control, short preparation period and the like.

The invention discloses an attapulgite/polyvinylidene fluoride nano-composite ultra-filtration membrane and a preparation method thereof. The preparation method comprises the following steps: adding a certain amount of nano attapulgite into triethyl phosphate selected as a solvent; carrying out fierce mechanical agitation and ultrasonic treatment and adding polyvinylidene fluoride powder; agitating until the powder is dissolved; adding polyethylene glycol and agitating uniformly to obtain a membrane casting solution; and preparing the attapulgite/polyvinylidene fluoride nano-composite ultra-filtration membrane by taking water as a condensation bath through the adoption of an immersion precipitated phase conversion method. According to the attapulgite/polyvinylidene fluoride nano-composite ultra-filtration membrane disclosed by the invention, the nano attapulgite is guided into a polyvinylidene fluoride ultra-filtration membrane, and a unique nano fiber structure of the attapulgite and a three-dimensional net-shaped structure formed by the attapulgite and polyvinylidene fluoride are utilized, so that the structure and the strength of the polyvinylidene fluoride ultra-filtration membrane are effectively improved; and meanwhile, the permeability, the hydrophily and the anti-pollution capability of the polyvinylidene fluoride ultra-filtration membrane are improved by utilizing the high hydrophily of the attapulgite.

The invention discloses an easy-to-wash PVDF (polyvinylidene fluoride) ultrafiltration membrane and a preparation method thereof. The preparation method comprises the following steps: with triethyl phosphate as a solvent, ultrasonically dispersing a certain amount of poly N-isopropylacrylamide modified attapulgite in the solvent, adding PVDF powder and stirring violently till the PVDF powder is dissolved, adding a pore-foaming agent, namely polyethylene glycol, and uniformly stirring, and finally standing for defoaming to obtain a membrane casting solution; with water as a coagulating bath, preparing the ultrafiltration membrane by using an immersion precipitation phase conversion method. By introducing the poly N-isopropylacrylamide modified attapulgite into the PVDF ultrafiltration membrane, the unique nano-fiber structure of the attapulgite and the three-dimensional net structure formed by PVDF can be used to effectively improve the structure and strength of a pure PVDF ultrafiltration membrane, and the high hydrophilicity of the attapulgite is used to improve the permeability and hydrophilicity of the membrane; meanwhile, the ultrafiltration membrane also has the temperature sensitivity of poly N-isopropylacrylamide, and anti-pollution and easy-to-wash properties are realized.

The invention discloses a micronano bioactive glass microsphere prepared by the microemulsion technology and a preparation method thereof. The preparation method of the micronano bioactive glass microsphere includes the following steps that 1, water, ethanol, an organic solvent and a surfactant are used for preparing a mixed solution, tetraethyl orthosilicate, a catalyst, triethyl phosphate and calcium nitrate are sequentially added, and the mixture is stirred evenly to obtain a bioactive glass gel solution; 2, the bioactive glass gel solution is centrifuged and cleaned, a wet gel precipitateis obtained, and the wet gel precipitate is placed in a drying oven for drying, and bioactive glass gel powder is obtained; 3, the bioactive glass gel powder is placed in a high-temperature furnace for heat treatment, and the micronano bioactive glass microsphere is obtained. The prepared micronano bioactive glass microsphere has the advantages of being good in dispersion and uniform in particle size distribution, and is a novel bone and dental regeneration and repair material.

The invention provides a stilbene derivative with 1,3,4-oxadiazole and a preparation method and application thereof. The preparation method of the stilbene derivative with 1,3,4-oxadiazole comprises four specific reaction steps, namely oxidation cyclization reaction, NBS (N-bromosuccinimide) bromination reaction, triethyl phosphite esterification reaction and Wittig-Honner reaction. The stilbene derivative with 1,3,4-oxadiazole disclosed by the invention can be used to obviously inhibit the growing activities of Lepidopteron such as beet armyworm and cabbage looper and have important application value in the developments of environmentally friendly, efficient and new pesticides.

The invention discloses a new technology for synthesizing AE-active ester with accelerant, which is made by condensation reaction in the triethyl phosphate and triethylamine solvent. The invention is characterized by the following: introducing pyridine with high hydroscopicity as the accelerant in order to accelerate the reaction proceeding according to the forward direction based on the original technology; changing the reaction solvent system (the mixed solvent which is comprised by acetonitrile and carrene according to (0.9-1.0):1); avoiding the problem of water content which is introduced by the new solvent; improving the normal reaction temperature; reducing the operation difficult; reducing the strength; improving the product efficient to more than 92%. The invention also achieves the recycling of the solvent by distillation.

The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery electrolyte and a preparation method thereof. The lithium battery electrolyte comprises an organic solvent, an additive, tris(trimethylsilyl)borate and lithium hexafluorophosphate. The additive comprises a stabilizer, an SEI film forming additive and a flame retardant, wherein the massratio of the stabilizer, the SEI film forming additive and the flame retardant is 50-80:1-5:1-5; the stabilizer is compounded by an organic fluorine compound; the SEI film-forming additive is at least one of vinylene carbonate, ethylene sulfite, allyl ethyl carbonate and butylene glycol sulfite; and the flame retardant is compounded by the triphenyl phosphate and the triethyl phosphate accordingto the mass ratio of 1-5:1-5. The conductivity of the electrolyte of the lithium battery is above 12ms/cm and near 13 ms/cm, the lithium battery has good preformances, the number of cycles is not smaller than 700, the internal resistance is not larger than 5.2 m[Omega], the first effect is not smaller than 93%, the capacity reaches up to 6510 mAh, and the energy density reaches up to 158.6 Wh/K.

The invention discloses a micro-nano bioactive glass microsphere with a surface nanometer pore structure and a preparation method thereof. The method comprises the following steps of (1) mixing water, ethanol and calcium nitrate tetrahydrate into a water phase solution; mixing tetraethoxysilane and cyclohexane into an oil phase solution; (2) mixing the water phase solution and the oil phase solution; then, sequentially adding surfactants, catalysts and triethyl phosphate; performing uniform stirring to obtain a bioactive glass gel solution; (3) performing centrifugal separation on the bioactive glass gel solution; performing cleaning to obtain wet state gel precipitates; then, performing drying to obtain the bioactive glass gel powder; (4) performing heat treatment on the obtained bioactive glass gel powder to obtain the micro-nano bioactive glass microsphere with the surface nanometer pore structure. The micro-nano bioactive glass microsphere has the advantages of good dispersivity and high specific surface area, can be used for loading medicine, bioactive molecules and the like, and belongs to an ideal micro-nano bone restoration carrier microsphere.

The invention relates to a synthetic method of an alpha-hydroxyl carbonyl compound. The method is as below: mixing a carbonyl compound (I) with an organic phosphorus compound in an organic solvent; adding a catalyst cesium carbonate; and reacting under aerobic conditions to obtain the alpha-hydroxyl carbonyl compound (II). R1 is selected from the group consisting of hydrogen, alkyl, alkoxy, amino, aromatic base, substituted aromatic base and heterocyclic aromatic base; R2 is selected from alkyl, carbonyl, ester and phenyl; R3 is selected from alkyl, carbonyl, ester group and phenyl. Or, R1 combines with R2 to form naphthenic group or substituted cycloalkyl, benzo cycloalkyl base or substituted benzo cycloalkyl base, indole ring or substituted indole ring. Or, R2 combines with R3 to form the cycloalkyl or substituted cycloalkyl. The organic phosphorus compound is triphenylphosphine or triethyl phosphate. The organic solvent is dimethyl sulphoxide, N,N-dimethyl formamide, N,N-dimethyl acetamide or N-methyl pyrrolidone.

The invention relates to a preparation method of a bioactive glass nanofiber cluster, which is characterized in that A solution which is composed of tetraethyl orthosilicate and triethyl phosphate and B solution which is composed of calcium nitrate tetrahydrate, deionized water, a template agent and a catalyst are firstly prepared, the B solution is slowly dropped into the A solution to form a sol, the sol forms a gel by aging for 4 to 7 days, the gel is dried for 2 to 3 days at the temperature of 80 to 140 DEG C, and finally the nanofiber cluster material is obtained by heat treatment and solidification process at 400 to 700 DEG C and grinding. The weight percentage of the components of the nanofiber cluster is that: 60 to 80 percent of SiO2, 36 to 16 percent of CaO and 4 percent of P2O5. The bioactive glass nanofiber cluster prepared by the invention is composed of nano-fibers that are regularly arranged, thus showing good biological mineralization characteristics in simulated physiological solution and being used in the fields such as bone tissue repair and bone tissue engineering.

An anti-pollution self-cleaning poly(vinylidene fluoride) flat-sheet ultrafiltration membrane and a preparing method thereof are disclosed. The method includes dispersing a certain amount of attapulgite-graphite-like phased carbon nitride composite material particles in triethyl phosphate that is adopted as a solvent; adding poly(vinylidene fluoride) and an amphiphilic copolymer into the obtained dispersion; violently and mechanically stirring the mixture until added materials are dissolved; then adding a pore-forming agent that is poly(ethylene glycol); fully stirring the mixture; finally allowing the mixture to stand and defoaming the mixture to obtain a film casting liquid; and performing immerged phase-inversion to obtain the flat-sheet ultrafiltration membrane by adopting an aqueous suspension of an attapulgite-graphite-like phased carbon nitride composite material as a coagulating bath. A three-dimensional network structure formed by a unique nanometer fiber structure of attapulgite and poly(vinylidene fluoride) is utilized to effectively improve the structure and strength of a pure poly(vinylidene fluoride) ultrafiltration membrane and to enhance a membrane densification property. More importantly, photocatalytic performance of graphite-like phased carbon nitride on the surface and in the main body of the ultrafiltration membrane is utilized to achieve anti-pollution and self-cleaning functions of the membrane and to increase the economical efficiency of a membrane separating process.

The invention discloses a process for preparing amorphous bioactive superfine powder, which comprises: sequentially adding ethyl orthosilicate, triethyl phosphate and calcium nitrate tetrahydrate in deionized water solution containing accelerating agent to obtain transparent homogeneous stable collosol and adjusting pH value; statically ageing the collosol for 4-7 days, then placing in a dry box at a temperature of 80-140DEG C for 2-3 days and further placing in a electric stove to obtain particulate sol-gel bioactive material via heat treatment of 600-700DEG C; mixing with grinding media and organic solvent to wet-grind for 5-12 hours, centrifugating, removing the organic solvent, further adding water, freezing and drying and directing sublimating the water after being frozen to obtain the amorphous bioactive superfine powder. The process of the invention is simple and practical and easy to control, and can realize mass production with the advantages of high production and uniform components, thereby effectively avoiding fine particles agglomerating.

The invention relates to a process for preparing triethyl phosphate by reacting phosphorus oxychloride with a greater than stoichiometric quantity of ethanol under reduced pressure at temperatures of from 0 to 50 DEG C. in a reaction vessel, whereina) the volatile components resulting from the reaction are predominantly condensed by means of a reflux condenser and the remaining volatile components are passed into a scrubber filled with water,b) after the end of the reaction, the reaction mixture is separated distillatively in an outgassing column into a top product and a bottom product which predominantly comprises triethyl phosphate,c) the top product of the outgassing column is combined with the contents of the scrubber and d) the contents of the scrubber are separated distillatively in an azeotropic distillation to obtain water and ethanol as top product and the ethanol, preferably after dewatering, is preferably returned to the reaction.

The invention discloses a method for recovering useful constituents such as tetrahydrofuran, methyl diethyl phosphate, triethyl phosphate and trimethylbenzene in a mixed waste solvent during a process of producing glufosinate ammonium by an integrated rectification process. The method comprises the following steps: using an integrated rectification process of discharging and rectifying in a single-tower side line and then connecting a single tower to rectify, directly extracting tetrahydrofuran from the top of the rectification tower in the side line and obtaining trimethylbenzene from the bottom of the tower; extracting the mixed solution of methyl diethyl phosphate and triethyl phosphate from the side line simultaneously, conveying the mixed solution to the rectification tower and carrying out single-tower separation, thereby obtaining methyl diethyl phosphate from the top of the tower and obtaining triethyl phosphate from the bottom of the tower. According to the method disclosed by the invention, the useful constituents in the mixed waste solvent during the glufosinate ammonium production process are recovered by the integrated rectification process, the total recovery rate of the mixed solvent exceeds 98%, and the quality achieves reuse standards. Compared with the conventional three-tower rectification method, the equipment cost and energy consumption of the method disclosed by the invention are obviously lowered.

The invention relates to a reaction type phosphorus-nitrogen flame retardant and in particular to a compound with a plurality of active groups and a preparation method of the compound. The preparation method comprises the following steps: (1) weighing cyanuric chloride, dissolving cyanuric chloride into a first solvent, stirring till being completely dissolved, slowly heating to be 60 DEG C, preserving heat while continuously stirring to uniformly disperse reactant; and (2) in the presence of nitrogen, adding a phosphite ester solution which is dissolved in the first solvent, reacting for 4-6 hours, and keeping stirring in the reaction process. Compared with the prior art, the compound with the plurality of active groups has the beneficial effects that the compound is prepared from raw materials, namely, cyanuric chloride, phosphite ester compounds (trimethyl phosphate or triethyl phosphate) and polyhydric alcohol compounds (neopentyl glycol, glycerol or pentaerythritol) with quaternary carbon (or secondary carbon) atoms, through Michaelis-Arbuzov electrophilic addition reaction and nucleophilic substitution reaction.

The invention discloses a preparation method of a nanoscale sound insulation glass material. Specifically, a Cu-BTC-SiO2 nanomaterial, ethyl orthosilicate, triethyl phosphate, calcium nitrate terahydrate, lanthanum nitrate hexahydrate and anhydrous sodium carbonate are adopted as the main raw materials, a calcining process is employed to prepare a silica ceramic carrier, the silica ceramic carrieris loaded to a porous organic metal complex Cu-BTC to obtain a high strength Cu-BTC-SiO2 skeleton material, and sound insulation functional particles are evenly distributed in a glass precursor according to the volume complementary filling principle and fuses with glass to form elastic interface bonding, therefore the spatial topological advantages of the metal modified skeleton structure can bebrought into full play. The preparation method provided by the invention is green and environment-friendly, and has little influence on the environment, the obtained product has good sound insulationperformance and wide application range, can be widely applied in the preparation process of various sound insulation glass, and plays an excellent sound insulation role.

The invention discloses a nano biological active glass material and a preparation method thereof, which belongs to the technical field of preparation of medical materials. The preparation method comprises the following steps: dissolving tetraethoxysilane in an ethanol solution, adjusting the pH by using nitric acid, adding triethyl phosphate, zinc nitrate and a template agent, mixing to obtain a sol solution, mixing calcium nitrate and deionized water, adding a dispersing agent, obtaining a dispersion, mixing the sol solution and the dispersion, adjusting the pH by using ammonia water, standing, centrifuging to obtain precipitates, finally freeze drying the precipitates, calcining, cooling, and discharging the material, thus obtaining the nano biological active glass material. The biological active glass prepared by the invention has the characteristics of uniform particle size, good dispersity, high porosity and large specific area, can effectively improve the biological activity of the material, has relatively good drug loading capacity and is an ideal medical material.