89 results about "Oxygen scavenger" patented technology

Disclosed is an oxygen scavenger composition including iron powder, activated carbon, water, a halide of an alkaline earth metal, and an alkaline substance, in which a content of the activated carbon is 20 parts by mass or more and 40 parts by mass or less with respect to 100 parts by mass of a content of the iron powder, a content of the water is 230 parts by mass or more and 370 parts by mass or less with respect to 100 parts by mass of the content of the activated carbon, and a content of the halide of the alkaline earth metal is 50 parts by mass or more and 65 parts by mass or less with respect to 100 parts by mass of the content of the water.

The invention provides an efficient boiler scale and corrosion inhibition composite agent and a preparation method thereof, and belongs to the technical field of water treatment agents. The sulfonated polycarboxylic acid copolymer is introduced, crystal nucleus formation is inhibited through chelation of carboxylic acid groups of the sulfonated polycarboxylic acid copolymer, the dispersing capacity and hard water tolerance are improved through sulfonic acid groups, normal growth of microcrystals can be adsorbed and interfered through regulation and control of isopropanol on molecular weight, and loose scale bodies easy to remove are promoted to be formed; the polyether grafted copolymer is used as an efficient dispersing agent, the main chain of the polyether grafted copolymer is responsible for adsorbing and anchoring generated tiny scale bodies, and extended polyether long side chains of the polyether grafted copolymer form a steric hindrance shielding layer to wrap particles and suspend stably, so that the scale bodies are prevented from gathering and growing up; the two components cooperate to form a scale inhibition defense line, and cooperate with auxiliary agents such as the compound amine and the deoxidant in the system to construct a comprehensive protection network, so that long-period stable operation of the boiler system is guaranteed.

The invention provides a soilless phase reservoir protection water-based drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The drilling fluid is prepared from the following raw materials in parts by mass: 100 parts of water, 0.2-0.4 part of a first pH regulator, 1-3 parts of a deoxidant, 0.1-0.4 part of a tackifying and shear strength improving agent, 2-4 parts of a filtrate reducer, 4-6 parts of magnesium-aluminum hydrotalcite, 4-6 parts of micro-nano aluminum oxide, 4-6 parts of superfine calcium carbonate, 4-6 parts of a lubricant, 1-2 parts of a corrosion inhibitor and 70-660 parts of an inorganic salt weighting agent. The drilling fluid disclosed by the invention is excellent in high-temperature resistance, good in rheological property and excellent in filtrate loss reduction performance; the drilling fluid disclosed by the invention can be prepared into saturated CaCl2 and saturated CaBr2 systems, does not contain barite and clay, is high in mud cake acid solubility, has permeability recovery of more than 72% after plugging, is good in reservoir protection, and has potential of on-site large-scale application.

The present invention relates to a kit for improving food shelf life comprising a sheet-like element component and an alkaline component. The sheet-like element component comprises a particulate filler comprising a mineral a binder and an oxygen scavenger. The oxygen scavenger is a compound comprising at least two phenolic hydroxyl groups, which can be deprotonated by the alkaline component, thus activating the oxygen scavenger. Further aspects of the present invention relate to an activated sheet-like element formed from the inventive kit, a process for the manufacture of a kit for improving shelf life, a process for the manufacture of a sheet-like element component, a process for activating the sheet-like element component, a supply device comprising the activated sheet-like element, a food packaging comprising the activated sheet-like element and the use of the kit or the activated sheet-like element in a food packaging and for prolonging food shelf life.

The application discloses a multi-component gas extinguishing agent composition, a capsule-based flexible fire extinguishing patch and a preparation method. The multi-component gas extinguishing agent composition comprises the following components: a chemical gas extinguishing agent, an oxygen scavenger, a light stabilizer, a polymerization inhibitor and a water scavenger. The chemical gas extinguishing agent comprises a main agent and a complexing agent, the main agent is perfluorohexanone, and the complexing agent is selected from one or more of 2-BTP, HFO-1336 and 8FE. The capsule-based flexible fire extinguishing patch comprises capsules and a fire-retardant patch, a plurality of capsules are pasted on the fire-retardant patch, the capsule comprises a wall material shell, the wall material shell is filled with the multi-component gas extinguishing agent composition, and the two ends of the wall material shell are sealed by using a sealing material. The fire extinguishing patch has the characteristics of large single fire extinguishing agent release amount, high efficiency, lightness, softness, high flexibility and wide applicability, and is suitable for small closed spaces, battery pack housings, flexible fire extinguishing blankets and other places and products.

The invention discloses a high-strength double-network gel for sealing cracks of a pressure-driven well, which comprises the following components in parts by mass: 0.5-2 parts of low-molecular-weight emulsion polymer; 0.1-0.3 part of a medium molecular weight polymer; 0.1 to 0.4 part of a phenol cross-linking agent; 0.1 to 0.4 part of an aldehyde cross-linking agent; 0.3 part of a deoxidant; the high-strength double-network gel is suitable for the technical field of oilfield chemistry, the high-strength double-network gel is constructed through the synergistic effect of a low-molecular-weight polymer and a medium-high-molecular-weight polymer, the shear resistance and the plugging strength are improved, and the high-strength double-network gel has the advantages that the high-strength double-network gel is suitable for plugging the fracture of the pressure-driven well; the shear resistance, the temperature resistance, the salt tolerance and the strength of the gel are greatly improved, a high-strength gel slug can be formed in a pressure-driven crack, then water is effectively plugged, the pressure-driven water injection swept area is enlarged, and the swept efficiency is improved.

Electrolyte for a battery cell, battery cell for a vehicle, and method for forming an electrolyte. The electrolyte comprises a base electrolyte. The base electrolyte comprises a primary lithium salt, a carbonate solvent, and an organic sulfate additive. The electrolyte also comprises lithium bis(fluorosulfonyl)imide (LiFSI), present in the range of 0.1 wt% to 1 wt% of the total weight of the electrolyte, a phosphite ester oxygen scavenger, present in the range of 0.01 wt% to 1.5 wt% of the total weight of the electrolyte, and fluoroethylene carbonate, present in the range of 0.5 wt% to 2.0 wt% of the total weight of the electrolyte. The base electrolyte is the remaining wt% of the total weight of the electrolyte, and the total wt% of the electrolyte is 100 wt%.

The invention discloses a preparation method of nitrile rubber, which comprises the following steps: (1) adding water, a vinyl nitrile monomer and an ionizable initiator into a polymerization kettle, stirring, heating, and cooling after the reaction is finished to obtain a reaction compound with an emulsification effect; (2) in the polymerization reaction, adding water, a cosolvent and the reaction compound obtained in the step (1), introducing nitrogen for replacement, then adding a deoxidant, a chain transfer agent with a surface activity function, conjugated diene and a vinyl nitrile monomer, heating, adding an ionizable initiator, and measuring the conversion rate of the reaction monomer in each period of time; and when the conversion rate is greater than 70%, adding a terminator and an anti-aging agent, stirring, degassing, adding a coagulant, flushing and drying to obtain the nitrile rubber. According to the preparation method, soap-free polymerization of nitrile rubber can be realized, the complexity of a post-treatment process is reduced, the environmental friendliness and economic benefits are improved, and the problem that the cleanliness of a product is difficult to improve is solved.

The application discloses a combined absorbent for removing acid gas and application, and belongs to the field of acid gas removal. The combined absorbent comprises a ring group substituted organic amine, a defoaming agent, a corrosion inhibitor, an oxygen scavenger, an organic solvent and a deionized water solvent. The application comprises the following steps: directly using the combined absorbent or using the combined absorbent after dilution with water to remove acid gas in raw material gas. The application of the combined absorbent is simple, low in cost and outstanding in synergistic effect, and especially obvious improvement is achieved in reducing energy consumption, reducing the circulation amount of the absorbent and corrosion of acid gas absorption and regeneration equipment.

Silicone hydrogel contact lenses suitable for use as daily disposable lenses, comprise a cured product of: a) a thermally-activated polymerization initiator, b) at least one oxygen scavenger includin

The invention discloses a corrosion inhibitor under an oxygen-carbon dioxide coexistence resistant condition as well as a preparation method and application thereof, and belongs to the field of corrosion prevention of oil and gas fields. The corrosion inhibitor at least comprises 20-40 parts of a corrosion inhibitor main agent, 3-7 parts of a synergist, 0.8-1.2 parts of a surfactant, 45-55 parts of a solvent, 10-18 parts of amino acid and 4-8 parts of a deoxidant. The corrosion inhibitor main agent is prepared from 15 to 25 parts of dihexyl hydrogen phosphate and 5 to 15 parts of oleic acid imidazoline; the synergist is prepared from 3 to 7 parts of organic alkynol; the corrosion inhibitor under the oxygen-carbon dioxide coexistence resisting condition has efficient corrosion inhibition performance in the oxygen and carbon dioxide coexistence environment.

This invention provides a carboxylated nitrile butadiene latex, its preparation method, and its application. The carboxylated nitrile butadiene latex, by mass parts, is composed of the following raw materials: butadiene, acrylonitrile, methacrylic acid, emulsifier, dispersant, electrolyte, ferrous sulfate, reducing agent, molecular weight regulator, oxygen scavenger, initiator, and demineralized water. The emulsifier is a mixture of anionic and cationic emulsifiers; the anionic emulsifier is sodium dodecyl sulfate, and the cationic emulsifier is a glycosyl gemini cationic surfactant. The mass ratio of the anionic emulsifier to the cationic emulsifier is 1:0.05–0.1. This carboxylated nitrile butadiene latex not only has low gel content and high mechanical stability, but its preparation method is also simple and controllable, making it easy for industrial production.

This invention discloses a water-based formate annular protective fluid for deep-sea oil and gas field development and its preparation method, specifically relating to the field of chemical corrosion prevention in oil and gas field development. The fluid comprises the following raw material components by mass percentage: 15wt%-40wt% organic-inorganic salt composite base fluid, 3wt%-8wt% green composite corrosion inhibitor, 2wt%-5wt% composite oxygen scavenger, 1wt%-3wt% zwitterionic bactericide, 2wt%-4wt% composite scale inhibitor, 0.5wt%-2wt% high-pressure stabilizer, 0.3wt%-1.5wt% environmental synergist, 1wt%-3wt% natural gas hydrate inhibitor, with the balance being deionized water. This invention, by employing a specific compounded high-pressure stabilizer and an optimized composite salt-based liquid, can withstand high-pressure environments exceeding 30 MPa and maintain excellent physical and chemical stability within an extreme temperature fluctuation range of -10°C to 180°C. After testing at 180°C for 168 hours, the liquid showed no stratification, no precipitation, and minimal density change, demonstrating its outstanding thermal stability and pressure resistance, making it fully adaptable to the harsh working conditions in the deep sea, from low temperatures on the seabed to high temperatures at the bottom of wells.

The invention provides an annulus protection fluid suitable for ultra-high-temperature working conditions of a myriameter deep well and a preparation method, raw materials comprise a weighting agent, a corrosion inhibition buffer system, a corrosion inhibition synergist, a deoxidant, an inorganic solubilizer and water, and the corrosion inhibition buffer system is a phosphate corrosion inhibition buffer system or a carbonate corrosion inhibition buffer system. The annulus protection fluid has the advantages of being adjustable in density, low in corrosivity, resistant to high temperature and gas cut, stable in performance, low in cost, simple in field operation, easy to prepare and the like, the application temperature can reach 230 DEG C, the density reaches 2.4 g / cm < 3 >, different well completion requirements are met, an oil sleeve is effectively protected, the sleeve damage and oil pipe corrosion failure risk is reduced, and smooth exploitation of oil gas is guaranteed.

The application discloses a kind of ground gathering and transferring pipeline corrosion inhibitor, including the following components by weight percentage: corrosion inhibitor main agent 10-45%, bactericide 5-25%, oxygen scavenger 5-10% and solvent 40-55%.A kind of ground gathering and transferring pipeline corrosion inhibitor preparation method is also provided, including the following steps: (1) as needed in reaction kettle, then add ethanol, stirring is uniform, to obtain solvent;(2) corrosion inhibitor main agent, bactericide and oxygen scavenger are sequentially added to solvent, heated to 50-60 DEG C, uniformly stirred 0.5-1.5h after gradually cooling down, to obtain ground gathering and transferring pipeline corrosion inhibitor.The application can effectively reduce the cell number of sulfate-reducing bacteria and iron bacteria, can reduce the corrosion of microorganism to pipeline and play better corrosion inhibition effect, thereby effectively solve the problem that gathering and transferring pipeline laid on ground in different environments is easily corroded, especially easily corroded by microorganism.

The application discloses a method for improving PPTC stability by using metastable oxide and PPTC, and belongs to the field of thermistors and circuit protection. The method comprises the following steps: mixing tungsten carbide powder and metastable oxide powder, vacuum drying to obtain dry modified tungsten carbide powder; and blending the dry modified tungsten carbide powder with polyvinylidene fluoride (PVD F ) to prepare PPTC. The application utilizes the instability of metastable oxides such as ferrous oxide (FeO) to make it react with oxygen in the environment in preference to tungsten carbide, thereby playing the roles of "sacrificial protection" and "oxygen scavenger", and the generated stable oxide further forms a barrier layer. It is verified by experiments that the PPTC prepared by the application has a significantly reduced resistance change rate after aging in a double-85 high temperature and high humidity environment, and has higher environmental stability.

The invention provides a slow-release fruit fumigation preservative based on a natural preservative and a preparation method thereof, and belongs to the technical field of fruit bacteriostasis and preservation, the slow-release fruit fumigation preservative comprises the following raw material components by weight: 27-35% of a deoxidant, 1.5-2% of calcium chloride, 60-70% of plant essential oil microcapsules, and 1.5-3% of modified calcium peroxide. A humidity response release mechanism is achieved through the chitosan-sodium alginate microcapsules, and the slow release effect of the plant essential oil is achieved; the deoxidant is used for rapidly reducing the initial oxygen concentration in the fruit package and weakening the aerobic respiration of the fruit package; the modified calcium peroxide slowly releases oxygen and absorbs carbon dioxide, so that anaerobic respiration is avoided. The preservative has the advantages of being non-contact, controllable in slow release, friendly in component and the like, and can effectively prolong the storage period of the fruits and maintain the quality of the fruits.

There is provided a coating formulation comprising an inorganic oxygen scavenger, a surfactant, an activator, a hydrophilic agent, optionally an additive and a plurality of monomers capable of forming a polymeric matrix, and a method to prepare the same. There is also provided an article comprising an inorganic scavenger, a surfactant, an activator, a hydrophilic agent and optionally an additive dispersed within a polymeric matrix, and a method to prepare the same.

A closure device for a container to provide a combined protection of inert gas and oxygen scavenger methods. The closure device comprises a body, a fastening member, one or more plurality of protrusions, a blister, a hollow shaft, and a seal member. The closure device is removably coupled to an open end of the container through a fastening assembly. The fastening assembly includes at least one of friction fit, a snap fit, a screw fit, or any of a variety of fastening mechanisms. The closure device provides a combined protection of inert gas and oxygen scavenger methods. This is beneficial because it prevents nutritional and organoleptic degradation processes of wine through oxidation while aids to preserve the fruitier and fresher aromas and flavors of the wine. The closure device is designed to fit snugly over the neck of the bottle and create an airtight seal.

The present invention provides a micro-nano capsule, a preparation method thereof, and a sustained-release gel containing the micro-nano capsule. The micro-nano capsule comprises amphiphilic silica micro-nano particles as a capsule shell and a crosslinker solution as a content, with the content being encapsulated by the capsule shell. The preparation method of the nano-microcapsule comprises preparing a crosslinker solution, stirring the solution with the amphiphilic silica micro-nano particles at a speed of 10,000 to 19,000 r / min for 1 to 2 minutes to obtain the micro-nano capsule. The sustained-release gel comprises the micro-nano capsule, a partially hydrolyzed polyacrylamide solution, and an oxygen scavenger solution. The sustained-release gel has a gelation time of up to 144 hours at 120°C.

This invention discloses a nano-air-driven oxygen-scavenging foaming agent, composed of the following components: 0.1%-2% surfactant, 0.1%-0.5% polymeric foam stabilizer, 0.1%-2% nanoparticle material, 0.2%-5% oxygen scavenger, and the balance being water. The invention also discloses a method for preparing the nano-air-driven oxygen-scavenging foaming agent, comprising the following steps: adding the prescribed amounts of nanoparticle material, polymeric foam stabilizer, and oxygen scavenger sequentially to the prescribed amounts of water, and finally adding the surfactant, stirring until homogeneous, and allowing to stand. This invention has the following beneficial effects: 1. The foaming volume of the oxygen-scavenging foaming agent is greater than 600 mL, the semi-foam lifespan is greater than 20 days (480 h), and the foaming performance and salt resistance are less than 100,000 mineralization; 2. Low oil-water interfacial tension and surface tension; 3. After being placed at 70°C for 10 hours, the dissolved oxygen concentration decreases from 5.345 mg / L to 0.042 mg / L.

A method of modifying a liquid sample containing an analyte so as to increase SERS signal intensity of the analyte is provided. The method of the present invention comprises the steps of: providing the liquid sample to be analyzed using SERS; and adding an oxygen scavenger to the liquid sample so as to remove dissolved oxygen from the liquid sample. A probe for remote sensing of an analyte in a liquid sample using SERS is also provided. The probe of the present invention comprises a detection chamber having a window that is transparent to SERS excitation light and Raman scattered signal, and tubing with a first and a second end, the first end of the tubing being flowably connected to the detection chamber and the second end of the tubing being configured to be placed in contact with a liquid sample.

Methods are provided for modifying a liquid sample containing an analyte to increase the SERS signal intensity of the analyte. The methods of the invention include the steps of providing a liquid sample to be analyzed using SERS, adding an oxygen scavenger to the liquid sample to remove dissolved oxygen from the liquid sample. Also provided is a probe for remotely detecting an analyte in a liquid sample using SERS. The probe of the invention includes a detection chamber having a window that is transparent to SERS excitation light and Raman scattered signals, and a conduit having a first end and a second end, the first end of the conduit being flowably connected to the detection chamber, the second end of the conduit being in contact with the liquid sample.

Various embodiments may relate to a non-volatile memory device. The non-volatile memory device may include a first electrode and a second electrode. The non-volatile memory device may additionally include a switching stacked arrangement between the first electrode and the second electrode, and an oxygen scavenger layer between the switching stacked arrangement and the second electrode. The non-volatile memory device may additionally include a diffusion barrier layer between the oxygen scavenger layer and the second electrode. The switching stacked arrangement may include alternating tunneling barrier layers and active layers. A first tunneling barrier layer of the tunneling barrier layers may be in physical contact with the first electrode. A last active layer of the active layers may be in physical contact with the oxygen scavenger layer. A bandgap of each of the tunneling barrier layers may be greater than a bandgap of each of the active layers.

A packaged, sealed container system for stable storage of a formulation of an oxygen-sensitive pharmaceutical compound, the packaged, sealed container system comprising a primary container including therein a formulation of an oxygen-sensitive pharmaceutical compound, a secondary outer container comprising a first flexible sheet layer, an opposing second flexible sheet layer, and a seal disposed along a common peripheral edge of the first and second flexible sheet layers, such that the primary container is disposed between and enclosed by the first and second flexible sheet layers of the secondary outer container. An oxygen scavenger is also disposed between and enclosed by the first and second flexible sheet layers of the secondary outer container. The oxygen scavenger is in fluid communication with the contents of the primary container.

There is provided an oxygen scavenger composition comprising iron, a metal salt and water, wherein the content of water per unit surface area of the iron present on the surface of the iron, [the content of water present on the surface of the iron] (g) / {the content of the iron (g) × the specific surface area of the iron (m2 / g)}], is 0.60 g / m2 or more and 2.00 g / m2 or less.

An entrained polymer is provided that includes in a blended form, a base polymer and a conjugated olefin, optionally lycopene or a derivative thereof. The resulting entrained polymer is useful in the manufacture of packaging for the protection of oxygen-sensitive contents. Also provided are systems and methods for reducing contamination in a product due to oxidation. Also provided are related methods of manufacture and methods of use.

A packaged, sealed container system for stable storage of a formulation of an oxygen-sensitive pharmaceutical compound, the packaged, sealed container system comprising a primary container including therein a formulation of an oxygen-sensitive pharmaceutical compound, a secondary outer container comprising a first flexible sheet layer, an opposing second flexible sheet layer, and a seal disposed along a common peripheral edge of the first and second flexible sheet layers, such that the primary container is disposed between and enclosed by the first and second flexible sheet layers of the secondary outer container. An oxygen scavenger is also disposed between and enclosed by the first and second flexible sheet layers of the secondary outer container. The oxygen scavenger is in fluid communication with the contents of the primary container.

The invention discloses a compressed air energy storage condensate water recovery and heat storage and exchange medium supply method and system, and belongs to the field of compressed air energy storage. Conveying the condensed water to a pretreatment device to remove lubricating oil and solid particles to obtain purified condensed water; conveying to a deep desalting device to remove dissolved salt so as to obtain desalted water; introducing a deoxidizing device to physically deoxidize to obtain deoxidized water; adjusting the water quality of the deoxygenated water, adding a chemical deoxidant to eliminate residual dissolved oxygen, and adding an alkaline agent to adjust the pH value so as to obtain adjusted condensate water; and finally, conveying to a heat storage and exchange system as a medium. The system comprises an air compressor unit, a condensate water collecting device, a pretreatment device, a deep desalting device, a deoxidizing device, a water quality adjusting device, a heat storage and exchange system, a control system and a supply pump. Condensate water generated in the air compression process is recycled and used as supplement water of the heat storage and exchange system after being treated, the process is simplified, the cost is reduced, and water resources are saved.

A memory device including a vertical stacking structure, a method for manufacturing the same, and an electronic device including the memory device are disclosed. A memory device including a vertical stacking structure according to one embodiment comprises an oxygen scavenger layer provided on a base substrate, a recording material layer provided on the oxygen scavenger layer and in direct contact with the oxygen scavenger layer, a channel layer provided on the recording material layer, a gate insulating layer provided on the channel layer, and a gate electrode provided on the gate insulating layer, wherein the oxygen scavenger layer includes an element that creates an oxygen vacancy in the recording material layer and does not include oxygen.