56 results about "Metal chelate" patented technology

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.

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 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 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).

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.

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.

PSMA targeted metal chelate nanodrugs, methods of making these nanodrugs and methods of using them for radiodiagnosis and radiotherapy are provided.

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.

Disclosed in the present invention are a polymeric diamine ligand, a diamine ligand, a preparation method therefor, and the use in catalytic synthesis of a chiral alcohol. Specifically provided in the present invention is a polymeric diamine compound, the polymeric diamine compound having a structural framework shown as formula I. A polymeric diamine metal chelate prepared from the polymeric diamine compound may be used as a catalyst in a transfer hydrogenation reaction to obtain chiral alcohol compounds having a plurality of substituents with a low catalyst loading and a high yield. Moreover, said reaction involves mild conditions, no alkali participation and simple operation and does not need special reactors.

The invention discloses a quality-improving and yield-increasing soybean protein peptide water-soluble fertilizer and a production process thereof, and belongs to the technical field of fertilizers. The fertilizer comprises the following components in parts by weight: 20-30 parts of urea, 50-65 parts of potassium sulfate, 5-10 parts of monoammonium phosphate, 2-10 parts of a chelating agent, 0.5-5 parts of an anti-blocking agent, 0.5-2 parts of seleno-amino acid and 1-5 parts of a soybean protein peptide-metal chelate. Through the synergistic compatibility of the soybean protein peptide-metal chelate and the seleno-amino acid, the yield and the quality of the soybeans are jointly improved, and the soybean protein peptide-metal chelate compound has a good application prospect.

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 invention discloses green antibiotic-free feed for quails in the egg producing period and a preparation method of the green antibiotic-free feed, and belongs to the technical field of animal feed. The feed additive comprises a composite additive composed of modified quercetin and modified gallic acid. The modified quercetin is subjected to acetylation, glycosylation, phosphorylation and deacetylation, so that the water solubility and bioavailability are improved; the modified gallic acid constructs a metal chelating compound through esterification, Michael addition and zinc coordination, the modified quercetin is responsible for core antioxidation, and the phytosterol component in the modified gallic acid synergistically regulates lipid metabolism, so that a multifunctional system capable of regulating antioxidation, calcium homeostasis and lipid metabolism in the egg laying period of quails is formed.

The invention discloses preparation and application of an iron chelate for reducing degradation of lactoferrin in stomachs of dogs and cats, and relates to the technical field of metal chelate preparation. Polysaccharide extracts of okra and tremella are chelated with Fe < 3 + > to prepare the iron chelate, and the iron chelate can increase Fe < 3 + > concentration and liquid viscosity in a local environment around lactoferrin in the stomachs of dogs and cats to inhibit Fe < 3 + > from being separated from the lactoferrin, so that the structural stability of the lactoferrin in the stomachs of dogs and cats is improved, and degradation of the lactoferrin is reduced. The iron chelate provided by the invention can be applied to or matched with related products of lactoferrin.

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.

The invention discloses an insect-expelling and weight-gaining microcapsule and a preparation method thereof. The insect-expelling and weight-increasing microcapsule comprises a shell material and a core material, the shell material comprises urea resin / nano tourmaline, and the core material comprises one or more of an insecticide and a plant extract; a metal chelate is loaded on the surface of the shell material. The insect-expelling and weight-increasing microcapsule disclosed by the invention not only can efficiently and lastingly expel insects around potted plants and kill possible eggs, but also can slowly release nutrient substances required by growth of crops, thereby providing a brand new thought for development of slow-release fertilizers.

The invention relates to the field of detection, and discloses a method for detecting the chelation rate of a methionine hydroxy metal chelate, which comprises the following steps: taking two same methionine hydroxy metal chelate samples to be detected, respectively performing volume metering and ultrasonic extraction by using diethyl ether to obtain a first extract and a second extract, measuring the mass content w1 of free methionine hydroxyls in the first extract liquor, measuring the mass content w2 of metal ions in the second extract liquor, and meeting the condition that w2 is equal to 0, wherein w1 is the mass content of free methionine hydroxyls in the first extract liquor, and w2 is the mass content w2 of metal ions in the second extract liquor; taking a methionine hydroxyl raw material sample for preparing the methionine hydroxyl metal chelate sample to be detected, measuring the total methionine hydroxyl mass content as w3, and calculating the chelation rate according to the formula that the chelation rate is equal to (w3-w1) / w3 * 100%. According to the present invention, the diethyl ether is adopted as the extraction solvent, such that the detection error caused by the large separation difficulty of the free-state methionine hydroxylate and the binding-state methionine hydroxylate during the detection process is improved, and the detection accuracy is improved.

The invention discloses a carbon fiber composite material for in-situ generation of radiation refrigeration particles and a preparation method thereof. The preparation method comprises the following steps: firstly, adding a coupling agent and a silicate ester precursor solution into epoxy resin, and carrying out hydrolytic condensation to generate silicon dioxide particles in situ; preparing a metal chelate from an organic metal compound, a chelating agent and organic acid, adding the metal chelate into an anhydride curing agent solution, and reacting to generate oxidized metal particles in situ; the two components are mixed with a curing accelerator, the mixture and carbon fiber cloth are prepared into prepreg, and the prepreg is laid and subjected to hot press molding. Through a step-by-step bi-component in-situ generation strategy, the radiation refrigeration functional particles are integrated in a carbon fiber composite material matrix in a high-dispersion and strong-interface combination mode, the problems of poor adhesive force of a traditional coating method and agglomeration of a particle direct adding method are solved, and the obtained composite material is high in sunlight reflectivity and atmospheric window emissivity and good in radiation refrigeration performance. Meanwhile, the interlaminar shear strength is kept at 5969 MPa, and the high-efficiency radiation refrigeration material has an efficient radiation refrigeration function and excellent mechanical properties.

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.