100 results about "Tricarboxylate" patented technology

The invention relates to the technical field of wastewater treatment, and in particular relates to a papermaking wastewater treating agent and a preparation method thereof. The papermaking wastewater treating agent comprises the following raw materials in parts by weight: 2-10 parts of ferrous sulfate, 10-20 parts of magnesium sulfate, 0.5-1.5 parts of polyacrylamide, 15-25 parts of ferric nitrate, 1-5 parts of nickel nitrate, 35-50 parts of polyaluminum chloride, 15-30 parts of starch xanthate, 2-5 parts of tetrasodium 2-phosphonobutane-1, 2, 4-tricarboxylate, 0.5-1 part of zinc sulfate, 1-3 parts of benzotriazole, 16-30 parts of modified kieselguhr, 5-20 parts of cross-linked rectorite and 5-8 parts of a chitosan-graphene composite material. The papermaking wastewater treating agent disclosed by the invention is wide in using range, simple in treatment process, small in drug consumption, good in treatment effect, stable in performance and good in effluent quality and is capable of effectively reducing the cost of water treatment, so that the papermaking wastewater treating agent has a very good economic benefit and a wide social benefit.

A composite corrosion-retardant scaling inhibitor contains organic phosphoic acid, organic phosphocarboxylic acid which may be the hydroxyphosphonoacetic acid or the mixture of hydroxyphosphonoacetic acid and 2-phosphono-1,2,4-butane tricarboxylate, and the homopolymer or copolymer containing carboxyl. It is specially suitable for treating the circulated cooling water containing sulfur.

The invention relates to a method for preparing amorphous calcium carbonate by microemulsion method. Calcium chloride and dimethylcarbonate are dissolved in water to prepare microemulsion, then tricarboxylate is added and dissolved in microemulsion, finally amorphous calcium carbonate is produced on the action of sodium hydroxide. The method provided by the invention is much easier, the reaction time range is expanded, the reaction is better to control and convenient to use in industry; moreover, the purity of the produced amorphous calcium carbonate is high.

The invention discloses a preparation method of 1,2,3-cyclopropyl tricarboxylate, comprising the following steps of: heating ethyl diazoacetate as a raw material for carrying out a cyclization reaction in the presence of organic solvents and catalysts at the reaction temperature of 35-110DEG C for 2-6h, wherein the mass ratio of the catalysts to the ethyl diazoacetate is 1:10-50; and rectifying after the reaction is finished to obtain the 1,2,3-cyclopropyl tricarboxylate. The method for preparing the 1,2,3-cyclopropyl tricarboxylate has the characteristics of concise process, high yield, low cost and less discharge of three wastes.

The invention discloses a two-photon dye contained metal organic frame material for detecting physiological temperature. The metal organic frame material can realize fluorescence temperature detection of all-brand biological transparent windows and has the chemical formula of [M(L)x(G)y].(R)n, wherein M is a metal ion, L is a triangular symmetrical organic ligand containing a tricarboxylate group, G is a solvent molecule, and R represents a dye molecule in a pore. The material is prepared with a solvothermal method and emits visible light in a range of 650-700 nm under excitation of laser being 1000-1064 nm. The two wavelength ranges are located in a second biological window and a first biological window, and the problem of absorption by water can be effectively solved; the material is luminous, sensitive to temperature, good in cycling performance and capable of effectively detecting the physiological temperature. Quantum efficiency and thermal stability of dye after being loaded are obviously improved, stability in water and a PBS (physiological buffer solution) is high, and biocompatibility is good. The material is expected to be applied in the fields of biomedicine and the like.

The invention provides a synthesis method of a trinonyl benzene-1,2,4-tricarboxylate plasticizer and relates to the technical field of plasticizer synthesis. The method comprises the specific steps ofan esterification reaction, negative pressure dealcoholization, alkali wash and water wash, removal of low-boiling-point substances and adsorption filtering. According to the synthesis method, an adopted catalyst is a composite inorganic acid ester, the conversion efficiency of raw materials can be improved, and a prepared trinonyl benzene-1,2,4-tricarboxylate product has the advantages of high ester content, bright luster and stable quality. The synthesis method has the advantages that the technical conditions are easy to control, the pollution is avoided, the energy consumption is low, andlarge-scale production is easily achieved. The synthesis method has good economic and environmental feasibility.

The invention discloses a hypoboric acid benzene tricarboxylic acid cobalt-indium micro-porous crystal and a preparation method thereof. The crystal has a molecular formula of Co5In(BTC)4[(B2O4(OH))]2, wherein BTC refers to 1,3,5-benzene tricarboxylate; the crystal has the molecular weight of 1443.18 and belongs to monoclinic system in a P21 / c space group; the cell parameters are that a is equal to 11.9109(3)angstroms, b is equal to 14.3578(3)angstroms, and c is equal to 20.6096(3)angstroms; the angle beta is equal to 98.208(2)degrees; and the average pore size is equal to 18-19angstroms. The hypoboric acid benzene tricarboxylic acid cobalt-indium micro-porous crystal is synthesized by adopting an ionothermal reaction; the crystal is characterized in that a one-dimensional chain is formed between biborate and dissimilar metals, the chains are connected to form a two-dimensional layer by virtue of the 1,3,5-benzene tricarboxylate, and the layers are connected to form a three-dimensional open framework structure by virtue of 1,3,5-benzene tricarboxylate ligands. The crystal has good adsorbability and fluorescence property and can be applied to the fields of petrochemical engineering and fine chemical engineering.

The invention discloses an electrolyte capable of suppressing zinc dendritic crystal growth in a charging-discharging process of a Zn-PANI secondary battery, and relates to the production technical field of the Zn-PANI secondary battery. The electrolyte comprises 0.1-1.0M of ZnCl<2>, 0.1-2.0M of NH<4>Cl, 0.01-1M of dicarboxylic acid, 0.005-1M of dicarboxylate, 0.1-2.0M of tricarboxylate, and gaseous phase SiO<2> with mass percentage of 3-12% and a surfactant, wherein the pH value of the electrolyte is 3.0-6.0. The Zn-PANI secondary battery is assembled by the electrolyte and a zinc sheet, a membrane and polyaniline loaded on a carbon current collector. A result obtained after the secondary battery is charged and discharged proves that the zinc sheet is smooth and tidy in surface, and a compact protective film can be formed possibly, so that zinc dendritic crystal formation can be suppressed effectively.

The invention provides a hyperbranched scale-inhibiting polymer as well as a preparation method and application thereof, and belongs to the technical fields of scale inhibition and scale prevention inindustrial water treatment. A phosphorus-containing functional group is introduced into a peripheral end group of a hyperbranched polyether skeleton through molecular design, and the hyperbranched scale-inhibiting polymer has excellent chemical stability in water when being compared with a polyester hyperbranched polymer; due to introduction of an end phosphorus-containing functional group, the local phosphorus concentration is increased, the peripheral steric hindrance of the phosphorus functional group is improved and the scale-inhibiting property and the coroosion-inhibiting property of the hyperbranched scale-inhibiting polymer are effectively improved. When PBTCA (2-phosphoryl-1,2,4-butane tricarboxylate) serving as the phosphorus-containing functional group is introduced into the hyperbranched end group, the own performance of the PBTCA can be maintained, the scale-inhibiting and corrosion-inhibiting properties of the PBTCA can be further improved, and the hyperbranched scale-inhibiting polymer can be applied to circulating cooling water with high temperature, wide pH range, complex scale materials, a high water fixing system and the like.

The invention discloses a glass-fiber-added composite absorbing material and a preparation method thereof. The composite absorbing material is mainly prepared from polypropylene, trioctyl metabenzene tricarboxylate and butyl acrylate by adding sodium carboxymethyl cellulose, polyoxyethylene laurate, polybenzimidazole imide, 2-hydroxy-6-methyl benzoic acid, diphenyl silanediol, potassium persulfate, diatomite, alkali-free glass fiber, hydroxy aluminum distearate, nano zinc oxide, andalusite powder, potassium salicylate, a surface treating agent and a foaming agent. The preparation method comprises the following steps: grinding, sintering, ultrasonic treatment, polymerization, acid pickling, dry treatment, extrusion, foaming, granulation and the like. The glass-fiber-added composite absorbing material has the advantages of excellent oil absorbing effect for crude oil, excellent mechanical oil holding effect, favorable oil retaining effect and high absorption rate, can satisfy the requirements of industry, and has favorable application prospects.

The invention provides a circulating water composite corrosion inhibitor which is prepared from the following components in parts by mass: 10-25 parts of inorganic salt corrosion inhibitor, 1-5 parts of 2-phospho-1,2,4-tricarboxylate butane, 4-10 parts of 2-acrylamido-2-methylpropanesulfonic acid, 5-10 parts of lignin and 10-15 parts of chitosan. The inorganic salt corrosion inhibitor is tungstate, molybdate or zinc salt; and the chitosan is medium-high-deacetylation-degree chitosan of which the N-deacetylation degree is 75-95% and the average molecular weight is 9.7*10<5>-1.3*10<6>.

The invention discloses a preparation method of high-purity methyl oleate, and relates to the technical field of purification of methyl oleate. The preparation method comprises the following steps: adding urea and methyl oleate raw materials into a low-carbon alcohol solution, heating and dissolving to obtain a uniform solution, cooling and freezing the uniform solution, separating out a urea inclusion of low-carbon chain methyl ester and saturated carbon chain methyl ester, filtering to remove the urea inclusion, distilling and concentrating the filtrate to obtain a concentrate of methyl oleate and methyl linoleate, dissolving the concentrate into naphthane, then adding maleic anhydride and iodine, heating to react until methyl linoleate in the concentrate generates C22 tribasic carboxylic acid methyl ester, adding a sodium hydroxide solution, distilling the reaction solution obtained in the S3, removing the solvent naphthane, and filtering to remove the C22 sodium tricarboxylate, thereby obtaining the high-purity methyl oleate. Saturated fatty acid methyl ester in methyl oleate is removed through a urea inclusion method, then polyunsaturated fatty acid methyl ester is removed through a reaction method, and therefore high-purity methyl oleate is obtained.

The invention discloses a radiation-resistant and folding-resistant cable.The radiation-resistant and folding-resistant cable is prepared from, by weight, 40-50 parts of polyvinyl chloride, 10-20 parts of butyl rubber, 9-13 parts of magnesium hydroxide, 5-8 parts of calcium carbonate, 10-14 parts of tris 2-propane-1,2,3-tricarboxylate, 2-6 parts of titanium dioxide, 3-8 parts of magnesium aluminum zirconium oxide, 3-7 parts of chromium silicon monoxide, 10-15 parts of diveratryl ether, 2-5 parts of hydroxybenzoic acid benzyl ester, 10-15 parts of terpinyl acetate, 1-4 parts of benzotriazole-1-formamide and 12-16 parts of allyl isosulfocyanate.The cable has good radiation resistance and folding resistance.

The invention discloses a mefenpyr-diethyl impurity, a preparation method and applications thereof, wherein the molecular structural formula is represented by a formula I. The preparation method comprises: carrying out diazotization and a Japp-Klingemann reaction by using 2,4,-dichloroaniline, nitrite and ethyl 2-chloroacetoacetate as raw materials to obtain an intermediate, and carrying out a ring-closure reaction on the intermediate and ethyl methacrylate to obtain 1,5-bis(2,4-dichlorophenyl)-6-methyl-1H,5H-pyrazolo[5,1-c]-1,2,4-triazole-3,6,7a-triethyl tricarboxylate, wherein the yield reaches more than 40%. According to the invention, the method has advantages of mild reaction conditions, low energy consumption, high economic feasibility and high yield; and the substance has the application value in the influence on the efficacy of mefenpyr-diethyl by using the substance as the impurity and in the safety evaluation of the residual substance on agricultural products.

The invention discloses a preparation method for trimethylolpropane tricarboxylate with a structural formula (I). The method comprises the steps of reacting 1,1,1-trimethylolpropane with a structural formula (II) with carboxylic ester R1COOR, R2COOR, R3COOR in presence of an anhydrous potassium carbonate-containing catalyst to generate products of trimethylolpropane tricarboxylate with the structural formula (I) and corresponding alcohol HOR, wherein R1, R2 and R3 are identical or different and are independently selected from one of a linear chain C2-C17 alkyl, a branch chain C3-C17 alkyl and C4-C8 cycloalkyl; and R is selected from C1-C5 alkayl. The method provided by the invention is beneficial to environment protection; and the product has high yield and good purity. The structural formula (I) and (II) are shown in the description.

The invention provides a scale-inhibiting and antibacterial material and a preparation method thereof, and the scale-inhibiting and antibacterial material comprises the following components in percentage by weight: 75-85% of a scale-inhibiting material, 5-10% of an antibacterial material and 5-20% of a binder, the scale inhibition material is at least two of polyaspartic acid salt, polyepoxysuccinic acid salt, 1-hydroxyethylidene-1, 1-diphosphonate, phosphono butane tricarboxylate and a phosphono carboxylate copolymer. The synergistic compounding effect of two or more scale inhibition materials is adopted, so that the scale inhibition effect is better than that of a single scale inhibition material. The scale-inhibiting antibacterial material, an antibacterial material, a binder and activated carbon powder are prepared into an activated carbon rod with a water purification effect, the activated carbon rod can be applied under the complex water quality condition, the service life of the activated carbon rod can be prolonged, and compared with the activated carbon rod with the water purification effect, which is directly prepared from the scale-inhibiting antibacterial material, the antibacterial material, the binder and the activated carbon powder, the service life of the activated carbon rod is prolonged. The scale inhibitor has better scale inhibition and antibacterial effects.

The invention provides a highlight brightening bar with the light, thin and durable smearing effect and the moistening and nutrition functions and a preparation method thereof. According to the highlight brightening bar and the preparation method thereof, isooctyl palmitate, triisodecyl benzene-1,2,4-tricarboxylate, myristyl lactate, isononyl isononanoate and beeswax are used, so that the highlight bar is strong in skin-friendly force and good in permeability, the moistening effect is achieved, and in addition, the moisturizing effect can be achieved; high polymer substances which are strong in skin-friendly force and capable of forming semi-transparent membrane pores such as a polyethylene oligomer and PVP (polyvinyl pyrrolidone) are used, so that the use effect of lasting permeability isachieved; and natural nutrient substances such as jojoba oil and shea butter can provide moisture and application components to the skin, and the problems of skin inflammation and the like can be prevented and solved; and the highlight brightening bar is suitable for the field of cosmetics.

The invention discloses an antirust cutting fluid, which is made by the following raw materials in parts by weight: 1-2.5 parts of isothiazolinone, 3-7 parts of butyl carbitol, 2-7 parts of vinyl acetate maleate, 20-30 parts of iso-bornyl acrylate, 15-25 parts of gutter oil, 1.5-3.5 parts of barium tricarboxylate and 2.5-7 parts of bi-isopropanol. The selected raw materials are cooperated, so that the cutting fluid has excellent lubrication, cleaning and antirust performance, and an extreme pressure lubricant and an antirust agent are added into the water base cutting fluid, so as to furthermore improve the lubrication and anti-rusting performance of the water base cutting fluid, so that the cutting fluid has excellent lubricity, antirust property, cooling and cleaning, and is significant to improve the surface smoothness of workpieces and reduce the wear of tools.

The invention discloses a novel corrosion inhibition dispersing agent, and belongs to the field of chemical engineering wastewater treatment. The novel corrosion inhibition dispersing agent is prepared from the following raw materials in parts by weight: 20-30 parts of a biological leavening agent, 15-35 parts of 2-phospho-1,2-4-butane tricarboxylate, 5-15 parts of hydroxyethylidene-1,1-diphosphonic acid (HEDP), 5-15 parts of hydrolytic polymaleic anhydride (PHMA), 5-15 parts of a dirt dispersion agent terpolymer and 60-80 parts of water. The novel corrosion inhibition dispersing agent is applicable to grey water treatment in a coal water slurry gasification technology and various powdered coal gasification technologies, can effectively slow down the influences of scaling and corrosion ofgrey water to production equipment, can reduce emissions, improves the repeated utilization rate of the grey water, and is worth popularizing and applying in the field of chemical engineering wastewater treatment.

The invention discloses a lube base oil and a preparation method thereof. The lube base oil comprises the following components in percentage by weight: 20-27% of rapeseed oil, 13-20% of olive oil, 21-33% of benzene tricarboxylate, 15-35% of tetraoctyl pyromellitate and 5-7% of polyglycol ether. Compared with the prior art, the lube base oil disclosed by the invention has lower condensation point and higher viscosity index, and is suitable for producing high-grade lube products. Meanwhile, the lube base oil has the advantages of favorable biodegradability, lower ecological toxicity and small environmental hazard.

The preparation process of hexahydro pyridazinyl tricarboxylate as shown in general expression I includes the reaction between 2, 5-bihalogeno valerate as shown in general expression II and hydrazine derivative as shown in general expression III in the presence of magnesium alcoholate. The hexahydro pyridazinyl tricarboxylat compound is one important medicine intermediate.

The present invention discloses a high-temperature-resistant and wear-resistant rubber material for an inner sheath of a drilling power cable and a preparation method for the rubber material. The high-temperature-resistant and wear-resistant rubber material is prepared by using the following raw materials: acrylate rubber, butadiene-vinylpyridine rubber, a thermoplastic polyurethane elastomer, trinonyl benzene-1,2,4-tricarboxylate, aramid pulp, methane black, pine tar, coal pitch, C5 / C9 copolymerized petroleum resin, an accelerant MBTS, an accelerant ZBPD, tungsten disilicide, ash calcium powder, tellurium powder, lanolin, pitch-based carbon fiber, an antioxidant OD, an antioxidant NAPM, an antioxidant WSL, diisopropyl peroxydicarbonate, N,N'-meta-phenylene-bis-maleimide and flame retardant particles. The material prepared by the present invention is not only excellent in mechanical property, but also is excellent in abrasive resistance and high-temperature resistance, and fully meets the using requirements of the inner sheath material of the drilling power cable.

The invention relates to a concentrated phosphoric acid anti-deposition agent which comprises the following components in parts by weight: 8-10 parts of amino trimethylene phosphoric acid, 3-5 parts of phosphonocarboxylic acid, 17-33 parts of a first acrylic acid multi-element copolymerized isopolymer, 33-42 parts of a second acrylic acid multi-element copolymerized isopolymer, 6-10 parts of 2-phosphono-1, 2, 4-butane tricarboxylate, and 30-40 parts of polymaleic anhydride. The anti-deposition agent containing a surfactant and organic active substances can generate a certain inhibition effecton nucleation and crystallization of potassium fluosilicate and sodium fluosilicate, and the scale inhibition rate in a laboratory can reach 80% or above; and the effect of the industrial test is good. Therefore, by selecting the additive, scaling can be effectively slowed down, and scaled substances are loosened, so that the start-up rate of a wet-process phosphoric acid filtering system is favorably improved, the scaled substance cleaning time is shortened, the purposes of increasing the yield and reducing the consumption are achieved, and the application and popularization values are great.

The invention discloses a process method for preparing sodium 2-ketobutyrate. The method comprises the following steps: S1, reacting diethyl methylmalonate or dimethyl methylmalonate used as a raw material with diethyl oxalate or dimethyl oxalate under the catalysis of a proper amount of an alkaline compound to obtain a 1-carbonyl propane-1,2,2-tricarboxylate intermediate; S2, reacting the 1-carbonyl propane-1,2,2-tricarboxylate intermediate obtained in step S1 with water under the catalysis of a proper amount of an acidic compound to obtain 2-ketobutyric acid; and S3, reacting the 2-ketobutyric acid obtained in step S2 with the alkaline compound to obtain the sodium 2-ketobutyrate. The method is reasonable in route design, safe, reliable, low in cost and capable of achieving quantitativeproduction.

The invention relates to a production method of fatty alcohol-polyoxyethylene ether. The method mainly solves the problem of high residual quantity of volatile organic compounds in a fatty alcohol-polyoxyethylene ether product obtained by reacting fatty alcohol with ethylene oxide in the presence of a basic catalyst in the prior art. According to a technical scheme in the invention, the productionmethod of the fatty alcohol-polyoxyethylene ether comprises the following step: in the presence of a catalyst, reacting fatty alcohol with ethylene oxide to obtain fatty alcohol-polyoxyethylene ether, wherein the catalyst comprises (1) a main catalyst and (2) a cocatalyst, the main catalyst comprises at least one selected from the group consisting of alkali metal hydroxides and alkali metal alkoxides, and the cocatalyst comprises at least one selected from the group consisting of (a) an alkali metal borohydride, (b) an alkali metal trialkylborohydride and (c) a stannous tricarboxylate dialkali metal salt.

A 4,5-disubstituted-1H-pyrrolo(2,3-f)quinolin-2,7,9-tricarboxylate compound, or an analog, or derivative thereof, having a structure of Formula I:R1 and R4 are each independently an atom or group selected from hydrogen, a linear or branched C1-8 alkyl group, a deuterated linear or branched C1-8 alkyl group, an aralkyl group, or a substituted aryl group; R2 is independently an atom or group selected from halogens, a linear or branched C1-8 alkoxy group, or a deuterated linear or branched C1-8 alkoxy group; and R3 is independently an atom or group selected from a linear or branched C1-8 alkoxy group, or a deuterated linear or branched C1-8 alkoxy group. The compound is useful as a reaction intermediate for the synthesis of PQQ. A process in which CAN is used as an oxidant in the synthesis of PQQ in existing patents and literatures is replaced. This makes the process cheaper and more efficient.

The invention relates to a method for cleaning filter cloth of a plate frame type sludge dehydrator. The method comprises the following steps: adding a filter cloth cleaning agent with the adding concentration of 300 to 1000 mg / L into a pool at the front end of the plate frame type sludge dehydrator, mixing uniformly, injecting into a dehydrator filter plate, performing soaking treatment on the filter cloth for 0.5 to 1.5 hours, and directly entering normal sludge-removing operation without washing with clean water, wherein the filter cloth cleaning agent comprises 10 to 30 percent of 2-phosphate-1,2,4-butane tricarboxylate, 10 to 30 percent of hydroxy ethylenediphosphonic acid, 15 to 40 percent of acrylic acid-hydroxypropyl acrylate-2-acrylamide-2-methyl propylsulfonic acid copolymer, 0.5to 2 percent of fatty alcohol-polyoxyethylene ether and the balance of water. The dirt on the surface of the filter cloth is removed by the method provided by the invention, so that the original blocked and hardened filter cloth recovers elasticity, the service life of the filter cloth is prolonged, the operation cost of the dehydrator is reduced, and the method is safer and more effective compared with the conventional method; meanwhile, equipment and metal pipelines can be protected and washing sewage is avoided.