31 results about "Tricarboxylate" patented technology

The invention relates to a high-salt scale inhibitor suitable for high-salt wastewater multi-evaporation working conditions and a use method, the scale inhibitor is composed of polyaspartic acid, polyepoxysuccinic acid, hydroxyethylidene diphosphonic acid, polymaleic anhydride, a composite quaternary ammonium salt, 2-phospho-1, 2, 4-tricarboxylic acid butane, a pH regulator, sodium persulfate, an antirust agent and a preservative, and has excellent scale inhibition performance. By using the scale inhibitor, the heat transfer efficiency of an evaporator can be remarkably improved, the service life of equipment can be prolonged, and the scale inhibitor is suitable for relieving aggregation and caking of salt on the wall surface of a quench tower under the condition of quench back-injection evaporation of high-salt wastewater; the evaporator is also suitable for relieving attached deposition of salt on the inner wall surface of the evaporator under the condition of multi-effect, double-effect and single-effect evaporation of high-salt wastewater; the scale inhibitor has excellent scale inhibition performance, can effectively prevent high-salinity wastewater from forming a scale layer under a multi-evaporation working condition, is simple and easy to understand in use method, is convenient to operate, and is suitable for a large-scale high-salinity wastewater treatment process.

The invention discloses an application of water-soluble rosinyl tricarboxylate in precipitation removal and enrichment recovery of heavy metal ions. Natural rosin reacts with fumaric acid to obtain fumaric acid, the fumaric acid is alkalized to obtain rosinyl tricarboxylate, the rosinyl tricarboxylate and heavy metal ions such as copper, cadmium and lead in water can easily form solid precipitates at room temperature, and the heavy metal ions in the water can be adsorbed, removed or recycled after simple filtration. The product has a good effect of removing heavy metal ions in water, the removal efficiency of copper, cadmium and lead can reach 99.9% or above, and the residual quantity of the heavy metal ions in the treated water meets the standard requirement of drinking water; the product disclosed by the invention can also be used for recycling rare metals in industrial wastewater. The product can be regenerated and reused, has the characteristics of environmental protection, low cost, high adsorption efficiency, easiness in desorption, simplicity and convenience in regeneration, wide adaptability and the like when being used for treating heavy metal ion pollution in water, and has excellent application prospects and social and economic benefits when being used for treating industrial and mining enterprise wastewater containing metal ions.

To improve the adhesion of the coating film to the resin and the resistance of the coating films to blocking each other. [Solution] The polyurethane aqueous dispersion according to the embodiment comprises a polyurethane resin (A) containing a polyester polyol as a constituent component dispersed in an aqueous dispersion medium, and includes a carbodiimide group-containing compound (B) and a salt (C) of an acid and an alkali metal. The polyurethane resin (A) has carboxyl groups, and the salt (C) is at least one selected from the group consisting of bicarbonates, carbonates, monocarboxylates, dicarboxylates, tricarboxylates, and phosphates, and the salt (C) exists in an ionized state in the aqueous dispersion medium.

A method of forming an electrode including dissolving a copper salt and benzene-1,3,5-tricarboxylate in a solvent and heating to a temperature of 60° C. to 100° C. to form a framework. Further, the method includes mixing a zinc salt and the framework to form a zinc doped framework and heating the zinc doped framework to a temperature of 300° C. to 600° C. under air to form ZnCuO nanoparticles. Furthermore, the method includes mixing the ZnCuO nanoparticles, a binding compound, and a conductive carbon compound in a solvent to form a suspension. Moreover, the method includes coating a substrate with the suspension and drying to form the electrode and the ZnCuO nanoparticles have an oval shape with an average size of 50 nm to 200 nm.

This invention discloses the preparation and gas adsorption separation application of pyrazole-3,4,5-tricarboxylic acid ligand heteronuclear metal-organic framework materials, comprising the following steps: 1) Weighing CuCl2·2H2O, Ba(NO3)2, and 1H-pyrazole-3,4,5-tricarboxylic acid as raw materials; 2) Placing the raw materials in a polytetrafluoroethylene-lined reactor, adding distilled water, and adjusting the pH to 2-4 with malonic acid; 3) Sealing the reactor and heating the reaction, raising the temperature from room temperature to 80-120℃ over 0-12 hours, holding the temperature for 70-75 hours, and then lowering it to room temperature over another 0-12 hours; 4) Collecting the product, washing, and vacuum drying to obtain the chemical formula [Cu2Ba(HL)2(H2O)3]. n The crystal is a pyrazole-3,4,5-tricarboxylic acid. By combining the multi-site coordination advantages, heterometallic node construction advantages, and pore functionalization control advantages of pyrazole-3,4,5-tricarboxylic acid, a stable framework structure can be constructed while simultaneously adjusting pore size, optimizing pore wall polarity, and constructing local adsorption sites, thereby enhancing the material's application potential in SF6 capture and separation, and C2 gas adsorption and storage.

The invention provides a volatile gas detection method based on gas chromatography and ion mobility spectrometry, and belongs to the field of volatile gas detection. The method comprises the following steps: selectively capturing volatile gas generated in the petrochemical industry by using an MOFs functionalized adsorption tube; the interior of the MOFs functional adsorption tube is sequentially filled with a silver ion modified UIO-66 metal organic framework, copper tricarboxylate and a mixed layer of a poly (2, 6-diphenyl-p-phenylene ether) / graphitized carbon black composite adsorbent and a carbon molecular sieve adsorbent; the captured volatile gas is desorbed from the adsorption tube through a two-stage thermal desorption procedure; and introducing the desorbed volatile gas into a gas chromatograph-ion mobility spectrometry (GC-IMS) combined instrument, so as to measure the content of the volatile gas. Therefore, the detection efficiency and accuracy of the content of the petrochemical volatile gas are improved.

The invention discloses a preparation method of a full-organic ionic liquid confinement nano catalytic material and application of the full-organic ionic liquid confinement nano catalytic material in photocatalytic CO2 methanation, and belongs to the technical field of photocatalytic materials. The invention aims to solve the problems that the existing photocatalytic material is small in specific surface area and insufficient in active sites due to difficulty in regulation and control of microstructure and pore structure, environmental and biological toxicity is caused by dependence on noble metal / transition metal, and preparation of CH4 by photocatalytic CO2 reduction is restricted. The method comprises the following steps: 1, preparing 5, 5 '-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) bipyridine aldehyde; 2, preparing a pyridine tricarboxylate ionic liquid; 3, PTZpy is prepared; 4, preparing PTZpy (+); and 5, preparing the IL (at) PTZpy (+) nano catalytic material. The catalyst is applied to preparation of methane by photocatalytic reduction of carbon dioxide under visible light irradiation and a pure water system. The method has a good application prospect in the fields of solar fuel preparation and carbon resource conversion.

The invention discloses a three-dimensional microporous cadmium compound with active sites and a preparation method and application thereof, and belongs to the technical field of chemical sensors, the chemical formula of the complex is [Cd3 (NTC) 2] n.0. 5DMF. 0.5 H2O, NTC is 5-nitrobenzene-1, 2, 3-tricarboxylate radical, and DMF is N, N '-dimethylformamide. The preparation method comprises the following steps: putting H3NTC, BPYP and Cd (CH3COO) 2.2 H2O into a reaction kettle, adding N, N '-dimethylformamide and N, N'-dimethylacetamide, dropwise adding an aqueous solution of HNO3 and H2O, continuously heating the reaction kettle, and cooling to room temperature to obtain the complex. The complex disclosed by the invention is novel in structure, has relatively good thermal stability, can stably exist in water with the pH value of 3.5-10.5, and can be used for high-selectivity and high-sensitivity fluorescence sensing of antibiotic furacilin.

A method of forming an electrode including dissolving a copper salt and benzene-1,3,5-tricarboxylate in a solvent and heating to a temperature of 60° C. to 100° C. to form a framework. Further, the method includes mixing a zinc salt and the framework to form a zinc doped framework and heating the zinc doped framework to a temperature of 300° C. to 600° C. under air to form ZnCuO nanoparticles. Furthermore, the method includes mixing the ZnCuO nanoparticles, a binding compound, and a conductive carbon compound in a solvent to form a suspension. Moreover, the method includes coating a substrate with the suspension and drying to form the electrode and the ZnCuO nanoparticles have an oval shape with an average size of 50 nm to 200 nm.

The invention discloses a preparation method of methylallyl alcohol, which comprises the following steps: adding tricarboxylate into a reaction kettle, adding water for dissolving, heating and refluxing; dropwise adding methyl allyl chloride, and controlling the reaction temperature; cooling and filtering to obtain tricarboxylate solid and filtrate for later use; adding the tricarboxylate solid into a sodium hydroxide aqueous solution for reflux hydrolysis, cooling and layering to obtain methylallyl alcohol and tricarboxylate, and after separation, combining the tricarboxylate with the filtrate for recycling. The polycarboxylate obtained after esterification of the ternary carboxylate has small solubility in a solution, and an esterification product is a precipitate and can be naturally separated out; the esterification reaction can be carried out even under the condition of no catalyst, and the reaction is simple and rapid; then, the polybasic carboxylic ester can be separated through simple filtration, so that the emulsification phenomenon of the carboxylic ester in a water layer is overcome; and hydrolyzing the polybasic carboxylic ester to obtain corresponding alcohol and tricarboxylate, rectifying the alcohol to obtain the product methylallyl alcohol, and recycling the tricarboxylate.

Insecticidal compositions may include an active ingredient, a solvent system, and a surfactant. The active ingredient may include a meta-diamide. The solvent system may include a tricarboxylate solven

The invention belongs to the technical field of medicine synthesis, and particularly relates to a synthesis method of a ketorolac intermediate. The ketorolac intermediate 5-benzoyl pyrrole-2-methane triethyl tricarboxylate is synthesized by taking 2-benzoyl pyrrole as a starting material. The method has the advantages of single reaction catalyst, simple operation, few reaction steps and high product yield, avoids the problem that a large amount of manganese ions and acetic acid exist in the system in the prior art, and is suitable for industrial large-scale production.

The present invention is characterized in that the alkyl group is derived from propane tricarboxylate of an isomer mixture of hexanol, and when applied to a resin, excellent tensile properties, elongation properties, migration resistance, volatilization loss and stress resistance as well as high plasticization efficiency can be obtained.

A method of making an electrode including dissolving a copper (Cu) salt and benzene-1,3,5-tricarboxylate in a solvent and heating to a temperature of 60° C. to 100° C. to form a framework. Further, the method includes mixing a zinc (Zn) salt and the framework to form a zinc-doped framework and heating the zinc-doped framework to a temperature of 300° C. to 600° C. under air to form ZnCuO nanoparticles. Furthermore, the method includes mixing the ZnCuO nanoparticles, a binding compound, and a conductive carbon compound in a solvent to form a suspension and spraying the suspension onto a substrate with a spray gun using air pressure to form the electrode. The ZnCuO nanoparticles have a spherical shape with an average size of less than 100 nanometers (nm).

The invention relates to the technical field of drug analysis and detection, in particular to a method for detecting an NOTA-P137 intermediate 2 and an isomer thereof. The detection method comprises the following steps: detecting by adopting a high performance liquid chromatography; the NOTA-P137 intermediate 2 is 9-benzyl 13, 16-di-tert-butyl (9S, 13S)-3, 11, 16-trioxo-1-phenyl-2-oxa-4, 10, 12, 15-tetraaza hexadecane-9, 13, 16-tricarboxylate, the NOTA-P137 intermediate 2 is 9-benzyl 13, 16-di-tert-butyl (9S, 13S)-3, 11, 16-trioxo-1-phenyl-2-oxa-4, 10, 12, 15-tetraaza hexadecane-9 Wherein the chromatographic conditions are as follows: a chromatographic column is a polysaccharide derivative bonding type chiral chromatographic column; n-hexane and / or n-heptane is used as a mobile phase A, and ethanol and / or isopropanol is used as a mobile phase B; carrying out isocratic elution by adopting a mobile phase A and a mobile phase B; the invention provides a separation and detection method which is accurate, stable, reliable and high in sensitivity, and has important significance on quality research and control of the INR101 injection.

The invention relates to a single-component coating material for food containers, comprising: a) at least one blocked polyisocyanate containing two or more 2-carbamoylpropane-1,2,3-tricarboxylate structures; b) at least one binder which is reactive toward isocyanate groups and has, on a statistical average, at least two isocyanate-reactive groups per molecule; c) optionally catalysts; and d) optionally solvents and / or optionally auxiliaries and additives; wherein a) and b) are present in an equivalent ratio of the sum of the blocked and non-blocked isocyanate groups from a) to isocyanate-reactive groups from b) of 1.5 : 1 to 12.0 : 1. The invention further relates to the use thereof and to methods for producing aqueous, solvent-free or solvent-containing lacquers, paints, adhesives and molded articles, as well as to the corresponding products.

A system and method for detecting and quantifying the concentration of rare earth elements in a fluid contacting a sensor, the method having the steps of: providing the sensor to an environment such that the sensor is in contact with the fluid, wherein the sensor features a fiber extending between a first end and a second end along a longitudinal axis, wherein the sensor further features a coating on the second end of the fiber, and wherein the coating is a metal-organic framework material including, but not limited to zinc adeninate, 1,3,5-benzenetricarboxylate, 4,4-biphenyldicarboxylate, and combinations thereof; interrogating the sensor with light; collecting a luminescent signal; and detecting the rare earth elements in the fluid contacting the sensor using the luminescent signal.

The invention belongs to the technical field of flame-retardant fabrics, and relates to a method for preparing an environmentally friendly, colorless, transparent and durable flame-retardant coated cotton fabric, specifically: alternately use finishing liquid 1 and finishing liquid 2 to finish the cotton fabric, forming a circulation mode of "finishing liquid 1-finishing liquid 2"; the finishing liquid 1 contains sodium alginate, 2-phosphoric acid-1,2,4-tricarboxylic acid butane, sodium hypophosphite and water; the finishing liquid 2 contains chitosan and water; the finishing process corresponding to the finishing liquid 1 in each cycle is: padding → pre-baking → baking → washing; the finishing process corresponding to the finishing liquid 2 in the last cycle is: padding → pre-baking → baking → washing; the finishing process corresponding to the finishing liquid 2 in other cycles is: padding → drying → washing; the temperature range of all baking is 140-150°C. The flame-retardant coated cotton fabric prepared by the present invention has a colorless and transparent flame-retardant coating, a high flame-retardant efficiency, good flame-retardant and water-resistant performance, and has significant environmental advantages.

The invention provides a preparation method of trans-cyclobutane-1, 2-dicarboxamide, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: S1, carrying out substitution reaction on raw materials including 1, 1, 2-ethane tricarboxylic acid triethyl ester, 1-bromo-2-chloroethane and a first alkali reagent in a first polar aprotic solvent to obtain 4-chlorobutane-1, 2, 2-tricarboxylic acid triethyl ester; step S2, carrying out cyclization reaction on raw materials comprising 4-chlorobutane-1, 2, 2-tricarboxylic acid triethyl ester and a second alkali reagent, so as to obtain cyclobutane-1, 1, 2-tricarboxylic acid triethyl ester; step S3, carrying out hydrolysis reaction on raw materials comprising the cyclobutane-1, 1, 2-tricarboxylic acid triethyl ester and a third alkali reagent to obtain cyclobutane-1, 1, 2-tricarboxylic acid; according to the method, the trans-cyclobutane-1, 2-dicarboxamide is finally prepared from cyclobutane-1, 1, 2-tricarboxylic acid, and the trans-cyclobutane-1, 2-dicarboxamide is obtained.

This invention discloses a scale and corrosion inhibitor for a bypass hardening industrial circulating cooling water system. This scale and corrosion inhibitor is added to the circulating cooling water and enters the bypass hardening pipeline of the system without interfering with the chemical precipitant added in the bypass hardening pipeline. The scale and corrosion inhibitor includes a scale inhibitor component, which includes component A and 2-phospho-1,2,4-tricarboxylate butane. Component A is prepared by reacting polysuccinimide and 2-acrylamide-2-methylpropanesulfonic acid in a solvent system composed of N,N-dimethylformamide and water, reacting at a constant temperature of 40–80°C, followed by the addition of sodium hydroxide for continued reaction. The scale and corrosion inhibitor of this invention not only has excellent scale and corrosion inhibition performance for circulating cooling water, but its most significant advantage is that it does not interfere with the chemical precipitant added in the bypass hardening pipeline for removing scale-forming ions. This achieves efficient scale removal in the bypass while avoiding the loss of the scale and corrosion inhibitor, allowing the circulating cooling water to retain its superior scale and corrosion inhibition properties for reuse after descaling. This ensures the safe operation of the circulating cooling water system and, under the premise of safe operation, achieves "zero discharge" of the system and effective control of operating costs.

The present invention provides a nitrogen-containing carboxylic acid transition metal complex and its preparation method and application, the chemical formula of which is [Zn3(H3Ntba)2(4,4′-bipy)] n , wherein H3Ntba=4,4′,4″‑triphenylamine tricarboxylate, and 4,4′‑bipy=4,4′‑bipyridine. The preparation method is to use 4,4′,4″‑triphenylamine tricarboxylate as a ligand and 4,4′‑bipyridine as an auxiliary ligand, and react with zinc nitrate in a mixed solvent of N,N‑dimethylformamide and N,N‑dimethylacetamide to obtain a nitrogen-containing carboxylic acid transition metal complex. The complex belongs to the orthorhombic system and the Cmca space group, and its unit cell parameters are: α=90°, β=90°, γ=90°. The preparation method of the present invention is simple to operate and can be promoted and applied on a large scale. The present invention also provides an application of the nitrogen-containing carboxylic acid transition metal complex, which can be used as a good CO2 gas adsorption and separation material.

The present application relates to the technical field of pharmaceutical analysis and detection, and particularly relates to a detection method of NOTA-P137 intermediate 2 and isomers thereof. The detection method comprises: detecting by high performance liquid chromatography; the NOTA-P137 intermediate 2 is 9-benzyl 13,16-di-tert-butyl (9S,13S)-3,11,16-trioxo-1-phenyl-2-oxa-4,10,12,15-tetraazahexadecane-9,13,16-tricarboxylate; wherein, the chromatographic conditions comprise: the chromatographic column is a polysaccharide derivative bonded chiral chromatographic column; n-hexane and / or n-heptane are used as the mobile phase A, and ethanol and / or isopropanol are used as the mobile phase B; isocratic elution is performed by using the mobile phase A and the mobile phase B. The present application provides an accurate, stable and reliable separation and detection method with high sensitivity, which has important significance for the quality research and control of INR101 injection.

The invention discloses a preparation method and application of a 1, 3, 5-trimesic acid trimethyl ester composite material, and the method comprises the following steps: reacting 1, 3, 5-trimesic acid (BTC) with methanol in the presence of tetrabutyl titanate (TBT) as an accelerant, and hydrolyzing TBT to consume byproduct water so as to promote esterification reaction. Optimized preparation conditions comprise the holding temperature of 180 DEG C, the holding time of 12 hours and the molar ratio of BTC to TBT of 2: 1. The obtained SJZ composite material shows high specific capacity (for example, the first-circle discharge capacity of an optimal sample is 1344.7 mAh / g and is increased to 497.7 mAh / g after 100 circles) and good cycle performance and rate capability, the preparation conditions (temperature and time) are relatively mild, and the SJZ composite material shows application potential as a lithium ion battery negative electrode.

The application provides a volatile gas detection method based on gas chromatography-ion mobility spectrometry, and belongs to the volatile gas detection field. The method comprises the following steps: using a MOFs functionalized adsorption tube to selectively capture volatile gas generated in petroleum chemical industry; the MOFs functionalized adsorption tube is internally sequentially filled with a silver ion modified UIO-66 metal organic framework, copper benzene tricarboxylate, and a mixed layer of a poly 2,6-diphenyl p-phenylene ether / graphitized carbon black composite adsorbent and a carbon molecular sieve adsorbent; through a two-stage thermal desorption procedure, the captured volatile gas is desorbed from the adsorption tube; and the desorbed volatile gas is introduced into a gas chromatography-ion mobility spectrometry instrument for volatile gas content determination. Thus, the efficiency and accuracy of the content detection of the volatile gas in the petroleum chemical industry are improved.

The present invention provides compounds useful as selectively soluble supports (or tags) for oligonucleotide synthesis that can be removed in a high yield under basic conditions and can afford a resulting product at a high purity in an organic synthesis reaction such as peptide synthesis, oligonucleotide synthesis, and the like. The protecting reagent is a selectively soluble compound of Formula (I), which is derived from a tricarboxylic acid.

The invention discloses a lead adsorption material, a preparation method thereof and application of the lead adsorption material in perovskite photoelectric device packaging, and belongs to the technical field of perovskite photoelectric device packaging. Two novel lead ion adsorption materials are prepared by taking 2-phosphonic-1, 2, 4-tricarboxylic acid butane or 2, 3-dimercaptosuccinic acid matched with polyvinyl alcohol and glycerol as raw materials. The prepared lead adsorption material is suitable for various situations needing to control lead release, for example, lead leakage in a perovskite photoelectric device is controlled, one of the two lead adsorption materials is integrated into a traditional packaging layer of the device to form a composite packaging layer, the impact strength and the waterproof and anti-oxidation capacity of the photoelectric device are enhanced by utilizing the traditional packaging layer, and the photoelectric device is prevented from being damaged. According to the perovskite photoelectric device, toxic lead in the damaged photoelectric device is prevented from being exposed to the environment through the lead adsorption layer made of the lead adsorption material, the lead adsorption layer still has excellent lead adsorption capacity after long-term temperature circulation, the service life of the perovskite photoelectric device can be effectively prolonged, the stability of the perovskite photoelectric device can be effectively improved, and potential pollution of the perovskite photoelectric device to the environment is reduced.

The invention relates to a single-component system for coatings, comprising: a) at least one blocked polyisocyanate containing two or more 2-carbamoylpropane-1,2,3-tricarboxylate structures; b) at least one binder which is reactive toward isocyanate groups and has, on a statistical average, at least two isocyanate-reactive groups per molecule; c) optionally catalysts; and d) optionally solvents and / or optionally auxiliaries and additives. The invention further relates to the use thereof and to methods for producing aqueous, solvent-free or solvent-containing lacquers, paints, adhesives and molded articles, as well as to the corresponding products.

The invention provides a special reverse osmosis scale inhibitor for high-silicon water and a preparation method thereof, and the scale inhibitor comprises the following raw materials by mass: 40-65 wt% of polyamino polyether methylene phosphonic acid, 5-18 wt% of 2-hydroxyphosphonoacetic acid, 2-15 wt% of 2-phosphoric acid-1, 2, 4-tricarboxylic acid butane, 3-20 wt% of polyepoxysuccinic acid, 2-30 wt% of a sulfonate copolymer and 1-30 wt% of an acrylic polymer. The scale inhibitor reduces the energy consumption of a reverse osmosis system increased due to membrane pollution by reducing the formation of silicon scale, and can meet the environment-friendly requirement.

The invention is characterized in that the alkyl group thereof is derived from propane tricarboxylate of an isomer mixture of hexanol and benzyl alcohol, and when the propane tricarboxylate is applied to resin, excellent migration resistance, volatilization loss and stress resistance as well as high plasticization efficiency can be obtained.

The invention belongs to the technical field of medicine synthesis, and particularly relates to a synthesis method of a ketorolac key intermediate. The method comprises the following steps: reacting 2-benzoyl pyrrole with methane triethyl tricarboxylate under the action of tert-butyl hydroperoxide, potassium iodide, cuprous iodide and tetrabutylammonium iodide, and carrying out post-treatment to obtain the 5-benzoyl pyrrole-2-methane triethyl tricarboxylate (M-1). The method has the advantages of mild reaction conditions, simple operation, few reaction steps, high product yield and high purity, and is suitable for industrial large-scale production. The problem that a large amount of manganese ions and acetic acid exist in a system in the prior art is avoided.