22 results about "Metal chelate" patented technology

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 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.

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.

This invention relates to the interdisciplinary field of biomedicine and molecular imaging, specifically a novel magnetic resonance imaging contrast agent, its preparation method, and its application. The contrast agent uses thymosin α1 as the parent compound, linked with three identical substituents R, where R are metal chelate groups. These metal chelate groups are formed by coordination of a chelating agent and a metal ion; the chelating agent can be diethylenetriaminepentaacetic acid, etc., and the metal ion can be selected from gadolinium, manganese, and iron. The preparation method of the contrast agent includes: activating the chelating agent and grafting it onto thymosin α1 to form a chelate precursor; and coordinating the chelate precursor with a metal ion. The contrast agent prepared by this invention exhibits a significant T1 enhancement effect, lymphoselectivity, and reduced concomitant venous contamination; detection results show that it has excellent lymphatic system visualization capabilities in in vivo animal imaging, providing a prospective reference for replacing existing contrast agents.

The application discloses a high-strength, large-pore-volume and high-solid-content catalytic cracking catalyst and a preparation method thereof. The raw material of the catalytic cracking catalyst comprises a zeolite molecular sieve, a matrix and a binder. The matrix is composed of a gamma-alumina precursor with a peptization index of less than or equal to 50% and clay. The binder comprises a phosphorus-containing compound, an aluminum-containing compound and a multi-metal chelate. The catalytic cracking catalyst is prepared in a high-shear emulsifier. Compared with existing catalytic cracking catalysts, the catalytic cracking catalyst provided by the application has higher wear resistance, a large pore volume, a high molecular sieve content, a high solid content and excellent reaction performance.

The application provides a bio-based compound fertilizer synergist and a preparation method thereof. Through aspartic acid-lysine-metal chelate compound modification and a secondary granulation method, the nutrient controlled release effect is more optimal, and the synergist and the microelement supplement are combined; the seaweed extract can activate the expression of crop stress resistance genes, and the combination of gamma-aminobutyric acid and spermidine can repair the soil and crop microecology, and the crop growth and soil conservation are considered.

This document provides peptides and conjugates (e.g., radiopharmaceutical conjugates) that have avidity for a somatostatin receptor and their uses. The conjugate may comprise a 6-residue peptide, such as a 6-residue monocyclic peptide, a metal chelating agent, and optionally, a linker connecting the peptide to the chelating agent. The radiopharmaceutical conjugate may further comprise a radionuclide attached to the metal chelating agent.This document also provides methods for preparing the conjugates and methods for treating cancer by administering the described conjugates to a subject in need. The radiopharmaceutical conjugate may further comprise a radionuclide bound to the metal chelating agent. This document also provides methods for preparing the conjugates and methods for treating cancer by administering the described conjugates to a subject in need.

An earplug includes a body made of a silicone material containing a phosphorescent material that causes the earplug to glow in the dark after exposure to light. A filter for reducing sound is positioned within the body. The silicone material includes 80-90% polydimethylsiloxane and 5-15% of the phosphorescent material, such as zinc sulfide, strontium aluminate, or rare-earth metal chelates. A fin extends from the body and fits into folds of an outer ear to secure the earplug in place. The body has a layered design with multiple sections that gradually decrease in diameter toward a tip of the earplug.

The application discloses a high-strength and large-pore catalytic cracking aid and a preparation method thereof. The catalytic cracking aid comprises a molecular sieve, a substrate, a binder and a metal chelate. The substrate is composed of a gamma-alumina precursor with a peptization index of less than or equal to 50% and clay. The binder is prepared from a phosphorus-containing compound and an aluminum-containing compound. The molecular sieve has an MFI structure, and the molecular sieve with a pore diameter less than 0.7 nm accounts for 50 wt% to 100 wt% of the total amount of the molecular sieve. The binder, the metal chelate and the substrate are mixed in a high-shear emulsifier. The catalytic cracking aid provided by the application can keep excellent wear resistance and strength under the premise of high molecular sieve content and large pore volume through the cooperation between the components and the dispersion and emulsification of the components in the high-shear emulsifier in the preparation process. When used as a propylene aid and an octane aid, the catalytic cracking aid can not only make the device run smoothly, but also improve the propylene and octane content.

This invention provides a functional nano-predispersed slurry for fertilizers and its preparation method, relating to the fields of agricultural chemistry and new materials technology. The slurry is a stable suspension comprising a continuous liquid phase and a dispersed phase. The dispersed phase is a natural nanotube-shaped mineral carrier, on which a plant-derived active composition and an amino acid metal chelate are co-loaded. The natural nanotube-shaped mineral carrier is halloysite nanotubes, which constitute 3%-6% of the slurry by mass. The functional nano-predispersed slurry for fertilizers and its preparation method provided by this invention have the advantages of excellent stability, functional integration and synergistic effects, strong adaptability to downstream processing, standardization, and traceability.

The present disclosure relates to a method for preparing a metal-polymer resin composite with excellent bonding strength and bonding uniformity. The method includes a pretreatment step (S1) of etching a metal member, an electrolysis process step (S2) of forming an adhesive coating layer on a surface of the pretreated metal member, a drying step (S3) of drying the metal member with the adhesive coating layer formed on the surface, and an injection-molding process step (S4) of bonding a polymer resin to the dried metal member, and the electrolysis process is performed in an electrolyte solution containing a sulfur-containing compound and a metal chelate compound.

This invention relates to the field of desulfurization technology, and discloses a liquid-phase desulfurizing agent, its preparation method, its application, and a high-temperature desulfurization method. The liquid-phase desulfurizing agent provided by this invention comprises: an ionic liquid, a metal chelate, and an aqueous solvent, wherein the metal element includes Fe. The liquid-phase desulfurizing agent provided by this invention has the advantages of high sulfur absorption, high desulfurization efficiency, and high-temperature resistance.

This invention relates to the field of chemical reagent purification technology, specifically disclosing a method for preparing anhydrous ethanol, an electronic-grade reagent. The method includes the following steps: mixing industrial-grade ethanol with a metal chelate and then dehydrating it using a molecular sieve; subjecting the dehydrated ethanol solution to deep adsorption using an iminodiacetic acid-type chelating resin; then performing ion exchange using anion and cation exchange resins; followed by dual-tower distillation through a pressurized column and an atmospheric pressure column; and finally, performing four-stage precision filtration to obtain the final product. This invention, through a combination of molecular sieve dehydration, chelating resin adsorption, ion exchange, dual-tower distillation, and precision filtration, and by optimizing the process parameters and material selection for each step, can purify industrial-grade ethanol to an ultra-clean, high-purity level that meets G4 standards.

The application discloses an ion cage connected covalent organic framework compound and a preparation method and application thereof. The preparation method comprises the following steps: mixing an iron source, an oxime base derivative, a boric acid base derivative, a first solvent and a second solvent, and performing a liquid nitrogen freezing-pump air extraction-freezing cycle degassing treatment, then sealing and performing a condensation reaction to prepare a metal chelate connected covalent organic framework compound; and performing acid treatment on the metal chelate connected covalent organic framework compound to prepare the ion cage connected covalent organic framework compound. The preparation method provided by the application has the advantages of easy raw material, mild conditions, simple operation, and the like, and the prepared covalent organic framework compound has a clear cavity structure and a periodic arrangement of coordination sites, exhibits excellent chemical stability and regular channel characteristics, and has a wide application prospect in the fields of ion adsorption separation, heterogeneous catalysis and the like.

The application discloses an environmentally-friendly insect-repelling microcapsule, an environmentally-friendly insect-repelling asphalt additive and a preparation method thereof. The shell material of the environmentally-friendly insect-repelling microcapsule is a composite shell material comprising silicon dioxide / nano-electric jade, and the core material comprises one or more of a pyrethrum compound, a carboxylic acid ester compound, an amide compound and a plant extract; the shell material is loaded with a metal chelate on the surface. The environmentally-friendly insect-repelling microcapsule can not only efficiently and durably repel insects around roads, but also effectively inhibit the amount of pollutants generated by high-temperature action of asphalt in the production, construction and pavement process, thereby providing a new idea for functional utilization of asphalt materials.

This application provides a heat exchanger and its manufacturing method, as well as a thermal management system. The heat exchanger includes a metal substrate, which comprises a manifold, heat exchange tubes, and fins. The heat exchange tubes are fixed to the manifold, and the inner cavity of the heat exchange tubes communicates with the inner cavity of the manifold. The fins are located between two adjacent heat exchange tubes. The heat exchanger also has a coating, which includes a chemical conversion film layer. The chemical conversion film layer is applied to at least a portion of the surface of the metal substrate. The chemical conversion film layer includes zirconium and vanadium elements, and further includes an auxiliary agent, which includes at least one of phosphate and organometallic chelates. The composite coating on the surface of the metal substrate of the heat exchanger of this application has excellent barrier effect and uniform film thickness, which can effectively improve the corrosion resistance and service life of the heat exchanger.

This invention provides an integrated low-temperature preparation method for plant-derived multifunctional nanocomposite fertilizer particles, relating to the field of fertilizer manufacturing technology. The method includes the following steps: S1: Preparation of functional nano-slurry, mixing a plant-derived active composition with an amino acid metal chelate, adding a citric acid-modified halloysite nanotube carrier, and subjecting a loading composite reaction at 25-45°C for 2-3 hours under shear force to obtain the functional nano-slurry; the citric acid-modified halloysite nanotubes are obtained by dispersing halloysite nanotubes in a 0.5-2.0 wt% citric acid solution and stirring at 40-50°C for 1-2 hours; S2: Low-temperature binding and granulation, using the functional nano-slurry obtained in step S1 as a binder. The integrated low-temperature preparation method for plant-derived multifunctional nanocomposite fertilizer particles provided by this invention has the advantages of efficient protection of active ingredients, strong bonding, continuous and efficient process, and high product uniformity.

The application discloses a smoke-reducing and bird-repelling microcapsule, a smoke-reducing and bird-repelling asphalt additive and a preparation method thereof. The shell material of the smoke-reducing and bird-repelling microcapsule is a composite shell material comprising silicon dioxide / nano tourmaline, the core material comprises one or more of halogenated aromatic aldehyde and amino aromatic ester, and the surface of the shell material is loaded with a metal chelate. The smoke-reducing and bird-repelling microcapsule can not only persistently drive away road birds, but also efficiently and persistently reduce the content of irritating gases in asphalt smoke, thereby providing a brand-new idea for the environment-friendly application of asphalt.