96 results about "Metal chelate" patented technology

The invention relates to the technical field of biological separation materials, and discloses an amine-functionalized magnetic nano composite material and application thereof in protein separation and purification. The material has a core-shell structure and comprises a magnetic ferroferric oxide nano core, an ordered mesoporous silicon dioxide intermediate layer and a covalent grafted polyethyleneimine functional layer. By controlling the matching relationship between the pore diameter of mesopores and the molecular size of the polymer and adopting a crosslinking strategy, the material has high magnetic responsiveness, rapid mass transfer performance and high-density surface amino groups. The material shows high adsorption capacity, rapid adsorption kinetics and good cycle stability in the protein separation process, and is suitable for enrichment purification and metal chelating affinity separation of protein in a biological sample. According to the invention, the technical problems of low protein adsorption capacity, slow dynamics and poor cycling stability caused by compact shell layer, non-uniform amino distribution and limited mass transfer of the existing amine functionalized magnetic material are solved.

The invention relates to the technical field of industrial flue gas purification, in particular to a desulfurization and denitrification integrated flue gas purification system and method.The desulfurization and denitrification integrated flue gas purification system comprises an integrated washing tower, and the washing tower sequentially comprises an atomization venturi section, a desulfurization section, a denitrification section, a desulfurization section and a denitrification section which are communicated in the flue gas flowing direction, and the atomization venturi section is used for conducting preliminary acceleration, cooling and dust particle pre-wetting on introduced flue gas; the rotational flow centrifugal section is used for enabling the flue gas and the washing liquid to generate strong rotary centrifugal motion so as to realize gas-liquid-solid primary separation and mass transfer; the boiling foam absorption section is used for enabling the washing liquid at the bottom of the tower to form a boiling foam layer through an air distribution device and flue gas with a specific flow speed so as to provide a huge gas-liquid contact area; the dehydrating and demisting section is used for separating liquid drops entrained in the purified flue gas; by skillfully combining NO trapping by metal chelating and wet desulfurization by calcium, alkali and method, the method is realized in a unique boiling centrifugal tower, dust removal, desulfurization and denitrification are synchronously and efficiently completed in one tower body, the system is compact, and the investment and operation cost is low.

An amido group-containing monomer composition contains 80.00 to 99.99 mass % of an amido group-containing monomer (a) of the following formula (1) and 0.01 to 20.00 mass % of a metal chelate complex (b) having carbonyl group as a ligand:wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrocarbon group having a carbon number of 1 to 6, R3 represents a hydrocarbon group having a carbon number of 1 to 23, and R4 represents hydrogen or a methyl group.

The application discloses a demetallization agent, a preparation method and application method thereof, and a use of a demetallization auxiliary agent. The demetallization agent comprises a core-shell structure, is composed of an organic material with a chelating functional group, and comprises a core and a shell layer. The core is a sub-micron organic polymer particle, and the shell layer is an amphiphilic polymer with a functional group of strong electrostatic adsorption and metal chelating capacity connected to the surface. The preparation method of the demetallization agent comprises the steps of initiating connection and preparing the demetallization agent. The demetallization auxiliary agent has strong chelating capacity in an aqueous phase, and can transfer the metal chelated by the demetallization agent to the demetallization auxiliary agent. In addition, the application of the demetallization agent and the demetallization auxiliary agent to non-acid crude oil demetallization is disclosed. The demetallization agent and the demetallization auxiliary agent are suitable for removing metals such as nickel and vanadium in crude oil, have high demetallization agent grafting rate, increase the contact time of the demetallization agent and the oil phase, and have the characteristics of low cost, easy production and environmental friendliness.

The problem of the present invention can be solved by an adhesive which contains a specific acrylic copolymer (A), an isocyanate compound (B), and a metal chelate (C), and which satisfies all of the following (1)-(3) after curing. (1) 3.0 * 10 < 4 > Pad; g '(-20) lt; 4.0 * 10 < 5 > Pa, (2) 5lt; g '(-20) / G' (200) lt; 17, (3) 2lt; tan delta (-20) / tan delta (200) lt; 6.5); wherein in the formula, G '(-20) refers to the storage modulus at-20 DEG C and 1 Hz, G' (200) refers to the storage modulus at 200 DEG C and 1 Hz, tan delta (-20) refers to the loss tangent at-20 DEG C and 1 Hz, and tan delta (200) refers to the loss tangent at 200 DEG C and 1 Hz.

There is provided a resin composition including a resin having an alkyl group on a side chain of a molecule thereof, an inorganic filler and an antioxidant, wherein the antioxidant is either of a hydrazide-based antioxidant or a combination of a hindered phenol-based antioxidant and an organic metal chelate-based antioxidant.

The invention belongs to the technical field of catalytic materials, and particularly discloses an ionic liquid catalyst for preparing methylacrolein and a preparation method of the ionic liquid catalyst. According to the preparation method, ionic liquid (protonated morpholine hydrochloride or 1-butyl-3-methylimidazole chloride salt) and metal chloride are subjected to a reaction, metal chelating ionic liquid is obtained, and the ionic liquid catalyst is obtained. The ionic liquid catalyst disclosed by the invention is simple in synthesis operation and mild in reaction condition, and has good industrial amplification potential; compared with the traditional supported or single metal salt catalyst, the catalyst provided by the invention has the advantages that the metal ion loss or agglomeration phenomenon is not easy to occur in the use process, the service life of the catalyst is effectively prolonged, and the problem that the existing catalyst is easy to inactivate is solved; the catalyst is adjustable in active center, high in selectivity and excellent in catalytic performance.

The invention discloses a biomass waste-based compost fertilizer for improving saline-alkali soil and a preparation method thereof, and belongs to the technical field of fertilizer preparation, the compost fertilizer comprises the following raw materials: a biomass waste basic mixture, charcoal, desulfurized gypsum, zeolite powder, hydroxyapatite, sodium lignin sulfonate, EDTA-metal chelate and polyaspartic acid; the biomass waste base mixture comprises animal waste, crop straw and agricultural product processing by-products. On the basis of a biomass waste resource utilization concept, the compost fertilizer with a multi-mechanism synergistic effect is constructed through precise compatibility of components such as the biochar, the desulfurized gypsum, the zeolite, the hydroxyapatite, the natural polymer and the metal chelate and optimization of a two-stage fermentation and aging process, and aims to break through the bottleneck of the prior art. An innovative solution is provided for green and sustainable improvement of the saline-alkali soil.

The present invention relates to the field of polypeptide compositions, and specifically relates to a polypeptide metal chelate and the use thereof in the field of cosmetics. The polypeptide metal chelate is formed by means of the chelation of a polypeptide compound with a metal ion compound. A structure of the polypeptide compound is: [γ-Glu]n-AA, wherein n≥1, and AA is selected from glycine, alanine, valine, leucine, isoleucine, methionine (Met), proline, tryptophan, serine, tyrosine, cysteine, phenylalanine, asparagine, glutamine, threonine, aspartic acid, glutamic acid, lysine, arginine or histidine. The polypeptide zinc chelate prepared by the present invention has significant oil-controlling and anti-inflammatory effects, and can be compounded with other raw materials to prepare cosmetics with oil control and acne removal effects.

The application discloses a high-strength, large-pore-volume phosphorus-containing binder, characterized in that the binder comprises a glue, a curing agent and a modifier; the glue comprises a phosphorus-containing compound and an aluminum-containing compound; the curing agent comprises a gamma-aluminum oxide precursor, an acid and an alkylammonium salt, and the modifier is a metal chelate; wherein the colloidal solubility index of the gamma-aluminum oxide precursor is less than or equal to 50%; and the modifier is reacted with the glue in a high-shear dispersion emulsifier. The phosphorus-containing binder provided by the application, in combination with a conventional method, can obtain a catalytic cracking catalyst which, on the basis of high molecular sieve content and large pore volume, still has high wear resistance.

The present application relates to the field of environment-friendly metal surface pretreatment technology, and discloses a metal chelating film forming agent, a preparation method and application thereof, wherein low-molecular polysilazane resin and zirconium triethanolamine compound are used as film forming agents, epoxy modified silicone resin is used as an auxiliary film forming agent, aspartic acid diacetic acid tetrasodium is used as a chelating dispersant, tetramethyl decyne glycol is used as a wetting agent, n-butanol is used as a leveling agent, and interface stable graphene with Schiff base functional groups, quinoline functional groups and quaternary ammonium salt functional groups on the surface is used as a corrosion-resistant filler to prepare the metal chelating film forming agent, wherein the present application is environmentally friendly, and after the leak detection process of the compressor muffler, no alkaline cleaning agent is needed for cleaning and treatment, and the subsequent spraying can be directly performed, on the other hand, the metal substrate surface can be combined by physical adsorption and chemical adsorption to produce strong bonding force, and a dense protective film is formed on the metal substrate surface, thereby achieving the beneficial technical effect of significantly improving the corrosion resistance.

This invention provides a binder for a catalytic cracking catalyst and its preparation method. The binder comprises a binder, a curing agent, and a modifier. The curing agent is prepared by a hydrothermal reaction of a γ-alumina precursor, an acid, and an alkylammonium salt. The modifier is prepared by reacting a multi-metal chelate ligand, a metal central ligand, ethanol, and an organic acid. The binder comprises a phosphorus-containing compound and an aluminum-containing compound. In the binder for the catalytic cracking catalyst provided by this invention, a multi-metal chelate modifier composed of a multi-metal chelate ligand and multiple metals is introduced. Under the promotion of organic acid and ethanol, a multi-metal chelate modifier can be prepared in situ during the binder preparation process. Compared with directly using commercially available metal chelates, the in-situ prepared multi-metal chelate modifier has better water solubility and can promote the binding of the modifier with the phosphorus-aluminum sol, resulting in a better modification effect.

The invention discloses a catalyst and application thereof.The catalyst is obtained by firstly preparing a precursor, then calcining the precursor and conducting acid pickling, and the precursor is obtained by firstly dissolving ferric salt and a metal chelate in a solvent, adding nano metal oxide into the system, conducting uniform mixing and then removing dissolution; the finally obtained catalyst is a porous material with iron monatomic loaded on nitrogen-doped carbon, the specific surface area is large, the catalytic effect is improved, the raw material cost is low, and the preparation process is simple; in addition, the catalyst disclosed by the invention is good in stability and good in recoverability; when the catalyst is used for catalyzing oxidation of amino-containing compounds into nitrile compounds, the reaction conditions are mild, the substrate adaptability is good, the reaction is carried out in a water phase, no additional organic reagent needs to be added, the selectivity is good, and the product yield is high.

The invention discloses a green synthesis method of a phytic acid-derived metal chelate as a flame inhibitor. The green synthesis method comprises the following steps: S1, preparing a metal compound solution with a specific concentration; s2, preparing a phytic acid solution with an adaptive concentration, fully and uniformly mixing the phytic acid solution with the solution obtained in the step S1, and then carrying out magnetic stirring operation; s3, introducing a sodium hydroxide solution with a specific concentration into the mixed solution, and accurately regulating and controlling the pH value of the solution; s4, in an inert gas protection environment, performing hydrothermal reaction on the solution obtained in the step S3; and S5, after the reaction in the step S4 is finished, drying the product, and washing the precipitate to finally obtain the target chelate material. The phytic acid chelate prepared by the invention is excellent in flame inhibition performance, and can be widely applied to the fields of fire extinguishing agents and flame-retardant materials.

To provide an adhesive composition capable of yielding an adhesive that exhibits a well-balanced combination of adhesive properties (adhesion, tack) and peelability on various substrates, and particularly an acrylic resin composition for use as masking tapes that does not leave any residue.SOLUTION: An adhesive composition containing an acrylic resin (A) and a crosslinking agent (B), in which, relative to all structural units of the acrylic resin (A), the content of structural units derived from 1-methylheptyl (meth)acrylate (a1) is 10 to 90 wt.%, and the content of structural units derived from an ethylenically unsaturated monomer (a2) containing a functional group is 0.1 to 10 wt.%, and the crosslinking agent (B) includes a metal chelate-based crosslinking agent (b1).SELECTED DRAWING: None

The application discloses a kind of odorless environmental protection microcapsules, odorless environmental protection asphalt additive and its preparation method.The odorless environmental protection microcapsules of the application include composite shell material and core material, wherein the composite shell material includes inorganic base layer shell / nano tomaline / polydopamine, and the core material includes one or more odorless agents;The surface of the shell material is loaded with metal chelate.The odorless environmental protection microcapsules of the application can not only efficiently and durably reduce the content of irritating gas in asphalt fume, but also make asphalt emit pleasant fragrance during construction, providing a new idea for the environmental protection application of asphalt.

The invention discloses a cutting method for an LED epitaxial wafer, and relates to the technical field of wafer cutting, and the cutting method comprises the following steps: taking long-chain copolymer amphoteric buffer resin as a component A and an amino-functionalized metal chelating trapping agent as a component B, and mixing to prepare a protection solution; coating the protection liquid on the surface of the LED epitaxial wafer to form a liquid film; baking the liquid film to enable the solvent and volatile components in the liquid film to escape, and forming a solid protection layer on the surface of the LED epitaxial wafer; cutting the LED epitaxial wafer; and the cut LED epitaxial wafer is washed, so that the solid protective layer is dissociated rapidly, and cutting chips and metal slag are carried to thoroughly fall off from the surface of the wafer. According to the method, a protection system with stress buffering and active capturing functions is constructed, mechanical shearing force generated by high-speed cutting is effectively dissipated by utilizing molecular rheological characteristics, wafer edge breakage is prevented, thorough water washing desorption is realized through a hydrophilic induced swelling disintegration mechanism, and electrode oxidation and residue are avoided.

The invention belongs to the technical field of electromagnetic compatibility, and discloses a method for preparing a light magnetic carbon composite electromagnetic compatibility material by inducing chelate salt through carbon nitride, which comprises the following steps: 1, fully dispersing metal chelate salt and graphitized carbon nitride to form a uniform mixture; and 2, carrying out temperature programming calcination treatment on the uniform mixture to obtain the target magnetic carbon composite material. According to the present invention, the construction of the rich porous structure is achieved, the preparation process is simple and environmentally friendly, the template method adopted for the conventional porous structure inevitably comprises the introduction and the removal of the template agent in the whole production process, the use of the acid, the alkali or the oxidizing agent is involved, and the harm and the pollution are serious; the adopted carbon nitride template can be decomposed in the high-temperature pore-forming process for preparing the wave-absorbing agent, so that the problem of subsequent template removal is avoided.

The invention relates to a modified diaphragm for a zinc-iodine battery, the modified diaphragm comprises a diaphragm base material, and an aspartic acid metal chelate is adsorbed on one side, close to a battery positive electrode material, of the diaphragm base material; a zinc-loving composite functional material is arranged on one side, close to a battery negative electrode material, of the diaphragm base material, and one side of the zinc-loving composite functional material efficiently adsorbs polyiodide ions through a multi-network of electrostatic attraction, coordinate bonds and hydrogen bonds, so that the ion selectivity is improved, the shuttle effect of a polyiodide compound is effectively prevented, and the service life of the battery is prolonged. And the other side forms uniform electric field distribution and zinc flux on the surface of the negative electrode through the zinc-loving composite functional material, so that dendritic crystal growth is inhibited. In addition, the invention also provides a preparation method of the modified diaphragm for the zinc-iodine battery and the battery.

The present invention relates to a new class of compounds of general formula (I), to the metal chelates with a metal ion suitable for computed tomography thereof, to the Gd3+ chelate complexes thereof, to methods of preparing said compounds, and to the use of said compounds as contrast agents in diagnostic imaging, such as in magnetic resonance imaging (MRI) and computed tomography (CT).

The invention provides a magnetic separation liquid for improving magnetic separation cleaning effect, the magnetic separation liquid comprises a defoaming agent, a surfactant and a metal chelate, the surfactant comprises an anionic surfactant, a cationic surfactant and a nonionic surfactant, the anionic surfactant, the cationic surfactant and the nonionic surfactant are combined according to a specific proportion, and the metal chelate is a metal chelate. And a strong synergistic effect can be achieved. By using the magnetic separation liquid on the chemiluminescence instrument, a more thorough cleaning effect can be realized, a value jumping phenomenon caused by incomplete magnetic separation in a cleaning process in a detection process is effectively reduced, the repeatability of a detection result is remarkably improved, and the accuracy and reproducibility of a measured value are ensured.

To provide a heating roller whose resistance can be reduced, whose sufficient performance can be maintained over a long term and whose warming-up time can be shortened.SOLUTION: In the heating roller 100, a conductive layer 1 of a heating resistor is laminated on a cylindrical metal roller 3 via an insulating layer 2, and power is supplied to the heating resistor to generate heat. The heating resistor contains at least a predetermined amount of multi-walled carbon nanotubes, a predetermined amount of a silica-containing epoxy resin, and a predetermined amount of an organic metal compound, and the organic metal compound is at least one compound selected from the group consisting of an organic metal chelate compound and a metal alkoxide containing at least one metal selected from the group consisting of titanium, zirconium, and aluminum.SELECTED DRAWING: Figure 1

This invention discloses a sludge conditioner comprising a nanoscale hydrophobic material loaded with a polynuclear metal chelate. The conditioner, by weight percentage, comprises the following components: 10-20% hydrophobic material, 30-35% chelated iron solution, 10-15% polynuclear metal salt, 5-10% dispersant, 2-5% pH adjuster, and the balance being deionized water. This sludge conditioner can disrupt the EPS (expanded saline solution) of the sludge system, dissolve microbial cells in the sludge, release bound water within the sludge, reduce electrostatic repulsion, improve the hydrophobicity of microbial cells in the sludge, and release free water and surface water, thereby significantly improving the dewatering performance of the sludge.

The application discloses an environmentally-friendly sand-containing fog seal layer with insect-repelling function and a preparation method thereof. The environmentally-friendly sand-containing fog seal layer with insect-repelling function comprises the following components in parts by mass: asphalt 35-70 parts, water 30-70 parts, composite emulsifier 2-8 parts, defoaming agent 0.5-3 parts, acrylic ester 5-30 parts, photoinitiator 0.1-1 part, suspending agent 20-40 parts, fine sand 20-45 parts and environmentally-friendly insect-repelling microcapsule 5-40 parts. The environmentally-friendly insect-repelling microcapsule has a shell material comprising silicon dioxide / nano-electric jade and a core material comprising one or more of pyrethrin compounds, carboxylic ester compounds, amide compounds and plant extracts. The shell material is loaded with metal chelate on the surface. The environmentally-friendly sand-containing fog seal layer with insect-repelling function has good road performance and insect-repelling performance, and can effectively inhibit the amount of pollutants generated by high-temperature sunlight on the asphalt pavement.

Provided are surface-treated infrared-absorbing fine particles that are infrared-absorbing fine particles each having a crystallite size greater than or equal to 30 nm and a surface that is coated with a coating layer that contains at least one selected from a hydrolysis product of a metal chelate compound, a polymer of the hydrolysis product of the metal chelate compound, a hydrolysis product of a metal cyclic oligomer compound, and a polymer of the hydrolysis product of the metal cyclic oligomer compound.

Provided are: a ZrO2 liquid dispersion which can reduce the viscosity of a curable composition and can give a good refractive index of the curable composition when being added to the curable composition together with a polymerizable compound; a method for producing the liquid dispersion; and a curable composition which can have a low viscosity and a good refractive index.　The ZrO2 liquid dispersion comprises: coated ZrO2 particles that are coated with a metal chelate-based surface treatment agent and have an average particle diameter of 1.0 nm to 150.0 nm inclusive; and a dispersion medium for the coated ZrO2 particles.

The application provides a detection method of small molecule substances. The detection method comprises the following steps: mixing, incubating and mixing a sample, a diluent and a ligand, the small molecule substances in the sample are specifically combined with the ligand to form an immune complex, a complex antibody labeled with a signal generator is added, the complex antibody is specifically combined with a new conformation formed by the small molecule substances and the ligand to form a ternary immune complex, and the content of the ternary immune complex is detected; the molecular weight of the small molecule substance to be detected is less than 2000D; the diluent comprises a metal chelate and a buffer; the metal chelate comprises EDTA-2K or EDTA-2Na; the sample is a serum sample or a plasma sample, and the method solves the problem of detection difference between serum and plasma blood collection tube samples in the existing small molecule detection field.

The invention discloses an adhesive for a polaroid. The adhesive comprises the following components in parts by mass: 100 parts of an acrylate copolymer, 2-30 parts of an isocyanate compound, 1-10 parts of a metal chelate, 1-10 parts of an epoxy compound and 50-500 parts of a solvent, the acrylate copolymer is synthesized by copolymerizing the following raw materials in percentage: 60 to 80 percent of acrylate monomer, 10 to 30 percent of carboxylic acid vinyl ester monomer and 5 to 10 percent of acrylate containing carboxyl. The adhesive for the polaroid has high light transmittance and high cohesive force, can show good yellowing resistance under illumination and oxidation conditions, and can still keep good adhesive performance and optical stability in a high-temperature and high-humidity environment.

The application relates to the technical field of food safety detection, and discloses a pathogenic bacteria multi-modal detection method based on a nano-composite material and a neural network, which comprises the following steps: preparing a nano-composite material based on the metal chelating property and interface regulation technology of cuttlefish ink source nanoparticles; constructing a dual-mode immunosensing detection platform based on the nano-composite material and a lateral flow immunoassay detection platform; preliminarily detecting pathogenic bacteria based on the dual-mode immunosensing detection platform to obtain dual-mode detection signals; extracting multi-modal signal characteristics of the dual-mode detection signals based on a fusion architecture of a multilayer perceptron and a radial basis function; and analyzing the multi-modal signal characteristics based on a neural network algorithm and outputting detection results and prediction results of the pathogenic bacteria. The application combines nano-composite engineering, multi-modal signal transduction and machine learning organically, breaks through the bottleneck of traditional detection technology, and realizes dual-mode detection of rapid and accurate detection and risk assessment of foodborne pathogenic bacteria.