163 results about "Sequestering Agent" patented technology

To provide a liquid detergent composition that achieves both cleaning and disinfecting power, and also exhibits excellent stability of silver compounds at high temperatures. [Solution] A liquid detergent composition comprising (A) component: an alkanolamine represented by the following formula (a), (B) component: a chelating agent, (C) component: a surfactant comprising one or more selected from the group consisting of anionic surfactants (C1), nonionic surfactants (C2), amphoteric surfactants (C3), and semipolar surfactants (C4), and (D) component: a silver compound, wherein the pH at 25°C is 6 to 11. [C1] TIFF2026105304000022.tif48170

This invention provides an antimicrobial peptide spray, its preparation method, and its application in the prevention and treatment of peristomal skin infections. The spray comprises, by weight percentage, 0.05%-0.5% of a complex antimicrobial peptide, 0.1%-5% of a moisturizing and repairing film-forming matrix, 0.05%-0.2% of a buffer, 0.8%-1.2% of an isotonic regulator, 0.01%-0.5% of a stabilizer, and 0.005%-0.05% of a metal ion chelating agent, with the balance being water for injection. The complex antimicrobial peptide is composed of bovine lactoferrin antimicrobial peptide, sericin oligopeptide, and buckwheat-derived anti-inflammatory active peptide in a weight ratio of (3-5):(2-3):1. This spray possesses four core functions: broad-spectrum antibacterial activity, inhibition of bacterial biofilm, anti-inflammatory and soothing effects, and skin barrier repair. It is less likely to induce bacterial resistance, does not irritate damaged skin around the stoma, and can effectively prevent and treat peristomal skin infections.

This invention relates to a method for preparing copper-modified lead apatite. The method includes: sequentially subjecting precursor materials to a first hydrothermal process and a second hydrothermal process, followed by calcination to obtain copper-modified lead apatite; the precursor materials include liquid-phase precursor materials or solid-phase precursor materials; the liquid-phase precursor material is obtained by mixing lead salt, copper salt, phosphorus source, pH adjuster, chelating agent, and solvent; the solid-phase precursor material is obtained by mixing copper compound and lead compound; the temperature of the first hydrothermal process is lower than the temperature of the second hydrothermal process. The preparation method provided by this invention, by treating rationally designed raw materials using a specific hydrothermal process, can obtain copper-modified lead apatite with extremely low impurity content, which is beneficial for broadening the application fields of copper-modified lead apatite and improving its performance.

This invention discloses a treatment process for high-concentration sulfate wastewater, belonging to the field of wastewater purification technology. The invention first provides a multifunctional composite ion sieve, the raw materials of which include magnetic core microspheres, calcium aluminate precursor components, heavy metal chelating agents, scale inhibitors, antioxidants, antibacterial agents, host-guest recognition agents, polysaccharide compounds, polyacrylic acid compounds, crosslinking agents, and initiators. The ion sieve is prepared through steps including magnetic core preparation, calcium aluminate precursor functional layer deposition, small molecule modification layer loading, and pH-responsive outer shell coating. In use, the ion sieve is added to wastewater and stirred for adsorption. After adsorption saturation, solid-liquid separation is achieved through magnetic separation, and the material is regenerated and recycled sequentially using desorption and reconstruction solutions.

The application discloses an aluminum alloy cleaning agent and a preparation method and application thereof, and belongs to the technical field of cleaning agents. The aluminum alloy cleaning agent comprises the following raw materials in parts by weight: 7-12 parts of ionic surfactant A, 3.5-6 parts of non-ionic surfactant B, 0.2-3 parts of a dispersing solubilizing agent, 0.8-1.5 parts of a penetrating agent, 3-6 parts of a chelating agent, 0.2-2 parts of an inhibitor, 0.01-0.05 parts of a defoaming agent and 67-83 parts of deionized water. The non-ionic surfactant A comprises at least one of a fatty alcohol polyoxyethylene ether and a nonylphenol polyoxyethylene ether. The non-ionic surfactant B comprises a sorbitan fatty acid ester. The dispersing solubilizing agent comprises a polyhydric alcohol. The aluminum alloy cleaning agent can effectively improve cleaning power, avoid aluminum alloy tarnishing, and is environmentally friendly. The application further provides a preparation method and application of the aluminum alloy cleaning agent.

Soluble metal ions contained in clay and loam can migrate to the surface with the moisture present in the clay building materials and react there with oxygen. This can lead to the formation of manganese dioxide and thus to discoloration of the building material surface. This reaction can be reversed using reducing agents such as HDEP and hydrogen peroxide and effectively prevented by the use of chelating agents such as HEDP or citric acid.

This invention discloses a method for preparing vicinal diamine derivatives, belonging to the field of pharmaceutical intermediates and organic synthesis technology. Specifically, under an inert atmosphere, an aldehyde imine, an N-aryl tertiary amine, a base, a cadmium selenide quantum dot catalyst, and a solvent are mixed and reacted under blue light irradiation for 8-24 hours. After extraction with ethyl acetate and saturated brine, the organic phase is collected, dried, the solvent is removed by vacuum distillation, and purified by column chromatography to obtain the vicinal diamine derivatives. The vicinal diamine derivatives synthesized by this invention can be used as synthetic intermediates and metal ion chelating agents in drug synthesis and fine chemical industries.

The application discloses a walnut polypeptide, and the amino acid sequence of the walnut polypeptide is Phe-Phe-Asp-Gln-Gln-Glu. The walnut polypeptide FFDQQE can form a stable peptide calcium chelate. It is proved through structural characterization and cytotoxicity experiments that the calcium chelating capacity of the walnut polypeptide FFDQQE can be further enhanced by ultrasonic-assisted chelation. The walnut polypeptide FFDQQE can be used in the preparation of a calcium chelating agent, and the walnut polypeptide FFDQQE has no toxic side effects on the body and is safe and edible.

The application discloses a composition and a preparation method of a ripretinib cream, and the composition comprises: an active ingredient of ripretinib or a pharmaceutically acceptable salt thereof and excipients, wherein the excipients are composed of an oily base, a humectant, an emulsifier, water, a thickening agent, a preservative and a chelating agent, etc. The ripretinib cream composition disclosed by the application has the advantages of simpler preparation process, fewer excipients, smaller liquid drop particle size of the produced cream, no precipitation of the raw material drug in the use process, and equivalent clinical curative effect to the original Opzelura TM . The ripretinib cream composition disclosed by the application has the advantages of simpler preparation process, fewer excipients, smaller liquid drop particle size of the produced cream, no precipitation of the raw material drug in the use process, and equivalent clinical curative effect to the original Opzelura TM .

A process for preparing a granule containing (A) at least one chelating agent selected from alkali metal salts of methylglycinediacetic acid (MGDA) and iminodisuccinic acid (IDS) and, optionally, (B) at least one homopolymer or copolymer of (meth)acrylic acid, partially or completely neutralized with alkali, wherein said process comprises the steps of (a) providing an aqueous solution or slurry containing chelating agent (A) and, if applicable, (co)polymer (B), (b) removing most of said water by spray granulation in a fluidized bed, (c) treating the resulting granule in a vessel at least a portion of which rotates about a horizontal axis and wherein said vessel is selected from paddle mixers, drop mixers, and grate mixers.

The application relates to the field of industrial cleaning and film stripping technology, in particular to a magnetic force polishing film stripping agent and a preparation method thereof, which is prepared from the following raw materials in percentage by weight: 10-20% of environment-friendly organic solvent, 1-10% of corrosion inhibitor, 5-15% of surfactant, 5-15% of lubricant, 1-10% of organic additive, 1-5% of chelating agent, and the rest of deionized water; the environment-friendly organic solvent is composed of D-limonene and gamma-valerolactone; by adopting the above formula, the organic film layers such as acrylate and epoxy resin can be quickly softened and peeled off at normal temperature to 50 DEG C, and high temperature or ultrasonic assistance is not needed, so that energy consumption is reduced. The system does not contain strong acid and strong base, the corrosion inhibitor can form effective protection on active metals such as aluminum, magnesium and zinc, and corrosion and surface damage are avoided; the surfactant and the lubricant can synergistically improve wetting and permeability and reduce mechanical scratches; the chelating agent can stabilize metal ions and prevent redeposition; the organic additive can optimize dissolution kinetics. The overall formula is low-toxic and low-volatility, and has high film stripping efficiency and substrate compatibility.

The application provides a cable cooling liquid and a preparation method and application thereof, and belongs to the technical field of cooling liquids, and comprises the following raw materials: perfluorobutyl methyl ether, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether, a plasticizer, a cosolvent, a chelating agent, a retarder, a flame retardant and an antioxidant. The cooling liquid prepared by the technical scheme provided by the application can achieve the purposes of excellent heat conduction capacity and corrosion resistance to cable materials.

This invention discloses a stable nalmefene hydrochloride injection and its preparation method, relating to the field of biomedical technology. The injection consists of nalmefene hydrochloride, sodium chloride, hydrochloric acid, and water for injection, and contains no metal ion chelating agents, with a pH value controlled between 3.5 and 3.6. The method includes: preparing the solution and adjusting the pH under high-purity nitrogen protection in a solution preparation system with low metal ion introduction risk; filtering the solution through a polyethersulfone membrane with low metal leaching, and then filling it into ampoules with a vulcanized inner surface. This invention, through the systematic integration of multiple measures such as source control of the solution preparation system, inert atmosphere protection, precise pH control, surface passivation of packaging materials, and the use of high-purity materials, synergistically inhibits the metal ion catalytic oxidation of the active ingredient, ensuring that the content of the key degradation impurity II (2,2'-bisnalmefene) remains stably below the quality standard during long-term storage, solving the problem of chemical stability control of products in chelator-free formulations, and combining safety and process robustness.

The invention provides novel compounds of formula (I), stereoisomers and pharmaceutically acceptable salts thereof: (wherein: Q is a lipophilic, zinc chelating moiety which is selective for Zn2+ ions; L1 is a covalent bond or a C1-6 alkylene chain in which one or more -CH2- groups of the alkylene chain are optionally replaced by a group independently selected from -CO- and -NR4- (where R4 is H or C1-3 alkyl); Y is selected from the following groups: (II) and (III) (where each R5 is independently H or C1-3 alkyl; and R6 is H or C1-3 alkyl); L2 is a covalent bond or a C1-6 alkylene chain in which one or more -CH2- groups of the alkylene chain are optionally replaced by a group independently selected from -CO- and -NR7- (where R7 is H or C1-3 alkyl); R is -OH, -O-C1-6 alkyl, -O-(CH2)p-O-CO-C1-6 alkyl (where p is an integer of 1 or 2) or -O-CH(CH3)-O- CO-C1-6 alkyl; each R1 is independently selected from halogen and C1-3 alkyl; each R2 is independently selected from halogen and C1-3 alkyl; R3 is H or C1-3 alkyl; n is an integer of 0 or 1; and m is an integer of 0 or 1). The compounds according to the invention are selective zinc chelators that find use as adjuvants in the treatment of bacterial infections and / or bacterial biofilms that harbour such infections. For use in such treatment, the compounds are used in combination with an antibacterial agent, for example a β-lactam antibiotic. The invention further provides a triple combination therapy for use in the treatment of bacterial infections and / or bacterial biofilms which comprises co-administration of the compounds to a subject in combination with a β-lactam antibiotic and a serine β-lactamase inhibitor.

The application relates to the technical field of veterinary drugs, and particularly discloses aureomycin soluble powder and a preparation method thereof. The aureomycin soluble powder is composed of the following components in mass percentage: aureomycin phosphate salt 20-55%, chelating agent 0.5-2.5%, penetration promoter 0.5-2.5%, and organic acid carrier in residual amount; the aureomycin phosphate salt is mainly obtained by chemically modifying hydrochloric acid aureomycin with chlorophosphite di-tert-butyl ester, and then reacting with an alkali to form a salt. According to the application, the aureomycin is chemically modified into a phosphate salt, and the chelating agent and the penetration promoter are used in cooperation, so that the key problems of poor water solubility and low absorption rate are fundamentally solved, the solubility is improved by an order of magnitude, the oral bioavailability is significantly improved, and meanwhile, the complicated super-micro pulverization treatment required by a traditional process is avoided.

The application discloses a low-recess silicon through-hole copper film chemical mechanical polishing liquid and application thereof. The low-recess silicon through-hole copper film chemical mechanical polishing liquid comprises abrasive particles, an oxidizing agent, a chelating agent, a corrosion inhibitor, a butterfly-shaped recess inhibitor and water; the butterfly-shaped recess inhibitor is selected from structural compounds of formula 1 and / or formula 2, two C6-C12 hydrophobic alkyl chains of the structural compounds isolate the attack of chemical substances on the copper film layer, have more excellent steric hindrance than linear alkyl sulfate with the same number of carbon atoms, can synergistically act with the corrosion inhibitor to further reduce the copper corrosion rate, and thus improve product yield. Meanwhile, the butterfly-shaped recess inhibitor is adsorbed on the surface of the copper film layer in the groove, protects the copper film layer from being excessively removed in the over-polishing time, and thus significantly improves the butterfly-shaped recess after polishing. Although the overall removal rate of the copper film slightly decreases, high and adjustable copper removal rates can be achieved under lower down pressure, and production efficiency is ensured.

This invention discloses a softening treatment device and method for high-temperature oilfield wastewater, relating to the field of wastewater treatment technology. Oilfield wastewater enters a pre-desorption tank for impurity removal. The barium-strontium adsorption tank contains, from top to bottom, a fine quartz sand layer, a chelating resin layer, and a coarse quartz sand layer. The silicate pre-desorption tank contains an acid-base regulator, a dispersant, and a magnesium oxide suspension. The carbonate softening tank contains a dispersant, a coagulant aid, a soda ash solution, and a chelating agent. The stabilizing tank contains, from top to bottom, a modified activated carbon layer and an exchange resin layer. This invention uses the pre-desorption tank to initially separate oil, suspended solids, and corrosion products. A specialized chelating resin selectively adsorbs barium-strontium ions. In the silicate pre-desorption tank, pH is precisely controlled and magnesium oxide is added to directionally generate settleable magnesium silicate flocs. In the carbonate softening tank, crystal form control and coagulation aid work synergistically to promote the precipitation of calcium and magnesium in the form of large calcite particles.

A highly efficient and environmentally friendly liquid metal degreasing agent and its preparation method are disclosed, belonging to the field of metal surface treatment technology. This degreasing agent is composed of a pH adjuster (a mixture of aminosulfonic acid and citric acid), a composite surfactant (a mixture of nonionic and anionic surfactants), a phosphorus-free chelating agent, a composite corrosion inhibitor, a defoamer, a detergent builder, and deionized water in specific weight proportions. The preparation method involves sequentially dissolving and mixing each component. This invention achieves highly efficient synergistic degreasing and rust removal under weakly acidic conditions. At room temperature, it provides excellent cleaning and corrosion protection for various metal substrates such as steel, aluminum alloys, and galvanized sheets. It is free of strong acids, phosphates, and heavy metals, making it environmentally friendly, safe, low-foaming, and stable. It is particularly suitable for automated spray production lines, comprehensively solving the problem of simultaneously achieving effective cleaning, substrate protection, and environmental protection requirements in existing technologies.

The invention relates to a metal surface treatment technology, in particular to an environment-friendly titanium alloy oxide skin removing chemical liquid medicine which comprises the following raw materials in percentage by mass: 10-30% of alkaline substance, 10-30% of solvent and the balance of water. The dosage of the metal ion chelating agent is 5%-10%; 0.1%-2% of a redox catalytic medium; 0.5-5% of a metal corrosion inhibitor; 5-15% of an accelerant; 0.5%-2% of a penetrant; and the balance of deionized water is supplemented. The environment-friendly titanium alloy oxide skin removing chemical liquid medicine can efficiently remove surface oxide skin and meanwhile is high in titanium alloy base material protection performance.

The application relates to an oil field pipeline siliceous scale cleaning agent and a preparation process thereof, and relates to the technical field of oil field pipeline maintenance and chemical cleaning. The agent comprises the following components: an interfacial active component 5-8%, a chelating agent 15-20%, a complex conversion agent 10-12%, a pH regulator 3-5%, a biodegradation promoter 2-3%, and deionized water 52-65%. The pH value of the agent system is 8-10. The oil field pipeline siliceous scale cleaning agent is matched with interfacial active components, chelating agents, complex conversion agents and various functional components to form a mutual cooperation relationship. Under the synergistic effect of the interfacial action and the chemical action, the effect of the cleaning agent can be improved, the industrial descaling and cleaning efficiency is greatly improved, the discharge of the agent meets the national environmental protection discharge standard due to the biodegradation promoter, the traditional agent is prevented from polluting the environment, the weak alkaline pH regulator has no corrosion effect on commonly used equipment substrates such as carbon steel, stainless steel and enamel, the equipment is not damaged in the descaling process, and the service life of the equipment is prolonged.

This invention provides an oxidizing bactericide, its preparation method, and its application. The oxidizing bactericide comprises 30-60 parts of a modified chloramine compound, 5-15 parts of a modified chelating agent, 3-10 parts of a delay agent, 2-8 parts of a synergist, 1-5 parts of a corrosion inhibitor, and water to a total weight of 100 parts. The oxidizing bactericide of this invention exhibits stronger bactericidal effects, higher stability, and a longer shelf life. It also overcomes the drawback of traditional bactericides that easily corrode reusable membranes, significantly reducing the operation, maintenance, and consumable costs of water treatment systems, and possesses promising prospects for industrial application.

Functionalized materials that act as sorbent, as well as methods of making such materials and systems of using such materials, are provided. The disclosed processes, methods, and materials can be used for the separation of CO2 from fluid streams. In one aspect, the disclosed materials are synthesized by forming coated particles through the introduction of porous particles, such as silica, to a first reagent comprising a polymer. Then the functionalized material is formed as functionalized coated particles by the introduction of a second reagent comprising at least one adsorbing moiety to the surfaces of the coated particles. Formation of the functionalized material is in the presence of a chelating agent, antioxidant, and / or crosslinker. In some instances, formation of the functionalized material is further in the presence of a third reagent comprising an interaction moiety that is incorporated into the functionalized coated particles.

This invention discloses a one-bath process for preparing medical cotton, comprising the following steps: after removing impurities from cotton fiber raw materials and pre-treating them, the cotton fiber is pressed into cotton cakes; the cotton cakes are immersed in a working solution composed of water, a compound enzyme, an alkali, a bleaching agent, a chelating agent, and a surfactant; the temperature is raised to 45-50°C and maintained for 20-30 minutes; the temperature is further raised to 60-80°C and maintained for 30-40 minutes; the reaction solution is drained, and the cotton cakes are transferred to a washing tank and rinsed with hot water until the pH value is neutral; after centrifugation and dehydration, the product is dried. This process ensures whiteness while further reducing the operation time of the one-bath method, further reducing strength damage to cotton fibers, and lowering costs.

The present application relates to the technical field of wet desulfurization technology of coal-fired power plants, and discloses a desulfurizer and a preparation method and application thereof, the desulfurizer provided by the present application comprises, in percentage by mass, limestone, magnesium oxide, diatomite, hydroxyapatite, magnesium aluminum silicate, titanium hydroxyl oxide, poly-aspartic acid calcium chelating agent and an auxiliary agent. The desulfurizer provided by the present application has high activity, high reaction rate, good dispersibility and no obvious agglomeration, and is not prone to block the pipeline during the spraying process. In addition, the activity of the desulfurizer remains stable under the condition of fluctuation of the load of the unit, thereby ensuring long-term stable operation of the desulfurization system, and the desulfurizer can be efficiently adapted to high-sulfur flue gas with a SO2 concentration of 3000 mg / m 3 -5000 mg / m 3 , solves the problem of insufficient reaction of the desulfurizer under high-sulfur flue gas, has high utilization rate of the desulfurizer and high desulfurization efficiency, and the generated gypsum has high purity, uniform particle size and low water content, thereby reducing the disposal cost of solid waste.

According to a natural detergent composition, a detergent composition according to one aspect does not use synthetic chemical components such as metal ion chelating agents, unlike conventional synthetic detergents, so it does not cause environmental pollution, is harmless to the human body, is non-irritating to the skin, has low mineral salt precipitation, and has excellent cleaning power.

Use of a chelating agent in a surfactant composition to provide transparency and / or to substantially prevent discolouration, wherein the chelating agent comprises at least one aminopolycarboxylic acid or a salt thereof.

The application discloses a substation oil-filled equipment live extinguishing medium, and the mass concentration ratio of raw materials of the extinguishing medium is as follows: 5-35% of ethylene glycol, 5-20% of non-ionic foaming emulsifier, 3-8% of ethylene glycol butyl ether, 2-5% of non-ionic film-forming spreading agent, 0.2-0.6% of xanthan gum, 0.15-0.5% of non-ionic organic corrosion inhibitor and 0.5-1.5% of metal chelating agent, and the rest is deionized water with conductivity lower than 10 mu s / cm. The product formula uses non-ionic raw materials, and after being mixed with water in a proportion, the conductivity is lower than 200 mu s / cm. The conductivity of the extinguishing agent is prevented from being improved under long-term storage by adding a corrosion inhibitor / chelating agent compound, and the extinguishing agent can be used in combination with a water quality monitoring and processing device to realize spraying and extinguishing for live equipment within the effective period of the extinguishing agent. The extinguishing medium uses a new type of fluorosilicon / fluoroether structure film-forming agent, which can be naturally degraded in the environment on the basis of ensuring hydrophobicity, oleophobicity, film forming and spreading. Meanwhile, by adding a new type of high-efficiency cooling and emulsifying aid, the ability of the product to quickly extinguish and prevent re-ignition is ensured.

The invention discloses an environment-friendly high-performance titanium alloy polishing composition as well as a preparation method and application thereof, and relates to the technical field of metal material surface treatment. According to the environment-friendly high-performance titanium alloy polishing composition, the pH value of a basic system is adjusted to 9.5-10.0 through a pH adjusting agent; the base system comprises the following components in percentage by mass: 10-30% of silica sol, 3-4% of an anti-gel stabilizer (urea or methylurea), 2-3% of a heat transfer improvement and surface defect inhibitor (ethylene glycol or propylene glycol), 0.1-0.2% of a wetting leveling agent, 1-2% of an alcohol amine complexing agent and 0.5-1% of an aminopolycarboxylic acid chelating agent besides water. According to the environment-friendly high-performance titanium alloy polishing composition, on the premise that an oxidizing agent is completely abandoned, perfect balance of high stability, high polishing rate and excellent surface quality is achieved through unique formula design, and the environment-friendly high-performance titanium alloy polishing composition has the advantages of being environmentally friendly and high in safety.

The application discloses a TiN removing composition with good copper-cobalt-tungsten compatibility, which comprises an oxidizing agent, an alkaline substance, a carboxylate, a metal corrosion inhibitor, a chelating agent and deionized water. The etching liquid of the application is used for removing metal hard mask material TiN and cleaning etching residues in an advanced copper process, has excellent compatibility protection relative to Low-K materials and Cu, Co and W-containing materials, and in addition, the composition of the application has a long service life.

The application relates to the technical field of chemical mechanical polishing, in particular to a fine polishing composition for polishing hard and brittle materials and a preparation method and application thereof, the fine polishing composition comprising a chelating agent, a dispersing agent, an inorganic salt, a pH regulator, aluminum oxide particles, silicon dioxide particles and a solvent. The application uses compounded aluminum oxide particles and silicon dioxide particles as abrasive particles, greatly improves the material removal rate while ensuring the original surface quality, and obtains an ultrasmooth surface with a surface roughness Ra of nanometer level.