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111 results about "Chemical function" patented technology
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Chemical classification systems attempt to classify elements or compounds according to certain chemical functional or structural properties. Whereas the structural properties are largely intrinsic, functional properties and the derived classifications depend to a certain degree on the type of chemical interaction partners on which the function is exerted.
Comprehensive treatment agent for soda alkaline land and use method thereof
InactiveCN101481281ALower pHSimple structureClimate change adaptationExcrement fertilisersDesorptionIon exchange
Owner:中农网联(北京)科技发展有限公司
Inhibition of NF-kappaB by triterpene compositions
The invention provides methods for the inhibition of inflammation by providing, to a cell, in need thereof, monoterpene compositions that inhibit NF-κB. These compositions may also contain a carrier moiety that renders the monoterpene composition membrane permeable. The carrier may include triterpenoid moieties, sugars, lipids, or even additional monoterpenoid moieties. The composition can also contain additional chemical functionalities. Methods for using these compounds to prevent and treat a wide range of inflammatory conditions, especially, premalignant inflammatory conditions are described.
Owner:RES DEVMENT FOUND
Heat Regulating Article With Moisture Enhanced Temperature Control
InactiveUS20100015430A1Improve heat carrying capacityHeat storage plantsMedical devicesTemperature controlCarrying capacity
An article having reversible thermal regulation properties comprises a substrate and a functional polymeric phase change material having a heat carrying capacity. The article is further characterized by a chemical function having moisture adsorbing properties that increase the heat carrying capacity.
Owner:OUTLAST TECH LLC
Water-based 6H-SiC monocrystalline substrate chemical mechanical polishing (CMP) solution and preparation method thereof
InactiveCN102337082AHigh removal rateNo damagePolishing compositions with abrasivesMicro nanoWater based
The invention discloses a 6H-SiC single chip global planar chemical mechanical polishing (CMP) solution. In the solution, spherical micro-nano particles are taken as grinding materials. The solution comprises the following components in percentage by weight: 0.2-10 percent of 1-3 types of spherical particles of 10-250 nanometers serving as grinding materials, 0.05-15 percent of dispersion stabilizer, 0.05-25 percent of additive having a chemical function, 0.001-5 percent of lubricating, a pH regulator for regulating the pH value to 9.5-13.5 and the balance of high-purity deionized water. The polishing solution has the advantages of controllable removing rate, no damage to a chip after polishing, high flatness, low price and low cost, and can be applied to the CMP process of hard and brittle crystal materials and precision CMP of other optical materials.
Owner:HENAN INST OF SCI & TECH
Fixed dried red blood cells and method of use
Fixed-dried red blood cells (RBCs), and processes for preparing the same are disclosed. The red blood cells, upon reconstitution with distilled water or appropriate buffer: bind oxygen with native affinities, have partial deformability, present minimal thrombogenicity to platelets, and have oblated blood group antigens. The RBCs are preferably fixed by means of cross-linkers with aldehyde functions such as paraformaldehyde or glutaraldehyde either alone or in combination. Native oxygen kinetics are achieved by preparing the red blood cells with 1,6-diphosphofructose. Blood group antigens and chemical functions that render the lyophilized RBCs thrombogenic are occluded by chemically attaching polyoxyethylene glycol polymers to the surface membrane of the red blood cells. The cross-linked red blood cells are preferably died by lyophilization.
Owner:THE UNIV OF NORTH CAROLINA AT CHAPEL HILL +1
Waveguide grating structure and optical measurement arrangement
InactiveUS20100026323A1High measurement accuracyMaterial analysis by observing effect on chemical indicatorResistance/reactance/impedenceLight beamOptical measurements
The present invention describes (bio)chemo-functional waveguide grating structures consisting of at least one (bio)chemo-functional waveguide grating structure unit or at least one (bio)chemo-functional sensor location with beam guidance permitting light beam separation, as well as detection methods for parallel analysis which are marking-free or based on marking.
Owner:ARTIFICIAL SENSING INSTR ASI
Luminous metal-organic framework material with chemical sensing function as well as preparation method and application thereof
InactiveCN103242352AHigh purityImprove stabilityChemiluminescene/bioluminescenceFluorescence/phosphorescenceOrganic solventMetal-organic framework
The invention relates to a luminous metal-organic framework material with a chemical sensing function, a preparation method of the luminous metal-organic framework material, and an application of the material in detection of nitrobenzene organic matters. The preparation method comprises the following steps of: dissolving 5-(4-pyridyl)-1, 3-phthalic acid and zinc salt into an organic solvent in a certain proportion; and then synthesizing in a solvothermal way so as to obtain the luminous metal-organic framework material. The preparation method is simple in preparation process, high in material purity and excellent in stability. The synthesized metal organic framework material has the maximum emission wavelength of 381nm in water, and the fluorescence intensity of the synthesized metal organic framework material is gradually reduced as the unceasing increase of the concentration of the nitrobenzene organic matters, therefore, the material can be well applied to the detection of the nitrobenzene organic matters, and has the advantages of being fast in speed, simple, convenient, great in selectivity, high in sensitivity, etc.
Owner:LIAOCHENG UNIV
Dual-organic-ligand MOF, preparation method of dual-organic-ligand MOF, dual-organic-ligand charged MOF and preparation method of dual-organic-ligand charged MOF
The invention provides a dual-organic-ligand MOF, the MOF structurally comprises two different organic ligands with dicarboxylic structures; and the two different organic ligands with the dicarboxylicstructures comprise a phthalic acid organic ligand and a dipicolinic acid organic ligand. The structure of the provided dual-organic-ligand MOF comprises two different organic ligands, different organic ligands in the framework have different chemical functional groups, a chemical formula having an amino structure and a pyridine structure is obtained, the framework structure is charged due to thetwo organic ligands with two different chemical functional groups, the limit of the neutral framework of the MOF is broken, in addition to the fact that the positively charged framework structure with a high specific surface area shows the characteristic of the high specific surface area in the adsorption process, the MOF having different functional groups and the charged framework structure strengthens the adsorption effect in the dye wastewater, and has a better effect on adsorbing charged substances like an anionic dye.
Owner:UNIV OF SCI & TECH OF CHINA
Encapsulated covered stent
This disclosure provides a description of medical devices with polymeric cobwebbing disposed near the surfaces of the medical device. This cobwebbing can contain drug(s) and can enhance the mechanical and chemical function of intraluminal stents. Methods of using these devices and methods of preparing the devices are disclosed, as well.
Owner:ABBOTT CARDIOVASCULAR
Process for recovery of coastal natural wetland and multistage antisoil regulation and control technology therefor
InactiveCN1880583AGuaranteed normal growthHydraulic engineering apparatusSustainable biological treatmentSelf maintenanceWater quality
The invention relates to a method for recovering the wetland of hurt lake, with plant biological theory, ecological theory, etc, wherein the invention can increase the lives of wetland system, and recover the natural wetland ecological system, to realize the self-maintenance function of natural wetland group. Therefore, via the metabolism, physical and chemical functions of wetland plant and soil, the organic and inorganic can be stop at the wetland system, while the harmful one is decomposed into innocuous one, to purify the water. The invention has low cost, and high purifying efficiency.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI +2
Polymer based lanthanide luminescent sensors for the detection of organophosphorus compounds
InactiveUS20050019218A1Analysing fluids using sonic/ultrasonic/infrasonic wavesComponent separationLanthanideNerve agent GD
A device for measuring and detecting the organophosphonis compounds, such as a pesticides or a nerve agents is provided. The devices function by selectively binding an organophosphorous compound to a luminescent functionality-imprinted copolymer. The copolymers possess a securely bound luminescent lanthamide ion, such as Eu3+, in a coordination complex that has been templated for the chemical functionality.
Owner:THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
Molecular templating of a surface
InactiveUS20050214471A1Strong hydrogen bondingMaterial nanotechnologyLiquid surface applicatorsHydrogenMolecular cluster
The present invention describes a method for producing a large area two-dimensional nanoscale network on the surface of a substrate. The network is formed by depositing a sub-mono-layer of molecule A onto the surface of the substrate followed by a different molecule B. The formation of the network relies on the hetero-molecular hydrogen bonding between molecules A and B to be stronger than the homo-molecular hydrogen bonding. By appropriate choice of molecules A and B, together with the substrate, it is possible to manipulate and control the structure, dimensions and chemical functionality of the network. The pores of the network can act as containment vessels for other molecules and be made sufficiently large to accommodate several large molecules or atomic / molecular clusters or particles.
Owner:NOTTINGHAM THE UNIV OF
Photosensitive material with Anderson type polyacid and preparation method thereof
ActiveCN102071012AGood response controllabilityMaintain propertiesGroup 6/16 element organic compoundsTenebresent compositionsFunction groupPolyoxometalate I
The invention discloses a photosensitive material with Anderson type polyacid and a preparation method thereof, which belong to the technical field of the preparation of polyacid functional materials. The preparation method comprises the steps of: firstly preparing a series of organic molecular long-chains with active chemical function groups; secondly, preparing the Anderson type polyacid modified by the function groups; and finally, grafting the derived Anderson type polyacid with the organic molecular long-chains through covalent bonds. By the method, the preparation of photosensitive materials with the Anderson type polyacid for the first time is realized, and the application field of polyoxometallate is expanded. The method has the advantages of simple preparation process, good repeatability, high yield and strong operability.
Owner:BEIJING UNIV OF CHEM TECH
Microbial electrochemical in-situ biogas desulfurization method
ActiveCN105176614AEnhanced couplingEasy to operateGaseous fuelsDispersed particle separationCatalytic oxidationSulfide
The invention relates to a microbial electrochemical in-situ biogas desulfurization method. According to the method, sulfate is generated through microbial catalytic oxidation hydrogen sulphide with an anode electrochemical function, the sulfuretted hydrogen is prevented from being released into biogas, biogas in-situ desulfurization is completed, and the purity of methane in the biogas is improved; meanwhile, the electrons and H<+> released through sulphide oxidization are used for fixing carbon dioxide synthesis methane through cathodes, the concentration of carbon dioxide in the biogas is lowered, and synchronous in-situ desulfurization and biogas purification are achieved.
Owner:CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
Method for preparing silver-carrying ion and copper ion kaolin anti-bacteria agent
A preparation method of kaolin antibacterial agent loaded with silver ion and copper ion pertains to the technical field of chemical function material. The method is characterized in that firstly silver salt, sodium dihydrogen phosphate, copper salt and water are mixed into solution, and then mixed with kaolin when stirring and finally added with ammonia chloride and ammonium dihydrogen phosphate, so as to obtain the kaolin antibacterial agent loaded with silver ion and copper ion after drying, grinding, calcining and regrinding. The method of low-temperature calcining kaolin loaded with silver ion and copper ion provided by the present invention has the advantages of simple process, good effect, being easy for realizing industrialization and no environment pollution.
Owner:中国高岭土有限公司
Brittleness inhibition method of chemical function improved wood
InactiveCN102320069AImproved chemical functionIncrease the molecular chain lengthPressure impregnationWood impregnation detailsOrganic acidUltimate tensile strength
The invention is a brittleness inhibition method of chemical function improved wood, and relates to a new method for wood function improvement. By toughening treatment, the negative influence of wood brittleness increase caused by modifying wood only by modified resin is reduced. The method particularly comprises the following steps of: first, preparation of a modifier; second, soaking of wood or wood base materials; third, reaction polymerization of a functional reagent om the wood or wood base materials. The used organic acid catalyst has excellent environmental protection performance, can react with hydroxyls in the modifier system and the wood so as to be fixed in the wood, has good leaching resistance, and has no environmental harm. Functionalized wood prepared by the technology of the invention has significantly improved impact strength. The impact strength of functionalized wood without toughening treatment is reduced by 75%, and the impact strength of functionalized wood with toughening treatment is reduced only by 35%. Meanwhile, the toughening treatment does not reduce other performance of the functionalized wood; the dimension stability is obviously improved; and the antiswelling efficient is up to 50-70%.
Owner:NORTHEAST FORESTRY UNIVERSITY
Early strength cement grout with low dehydration ratio for grouting
InactiveCN101628800AGuaranteed suspension stabilityImprove resistance to water dilutionSlurrySuspending Agents
The invention discloses early strength cement grout with low dehydration ratio for grouting. The stable early strength cement grout for pre-grouting of coal mineshaft surface comprises the following components in part by weight: 100 parts of silicate cement, 80-120 parts of water, 10-40 parts of suspending agent, 1 part of inorganic sodium salt and 0.03-0.1 part of organic alcohol early strength agent. The cement grout utilizes physical and chemical functions of composite admixture, improves the suspending stability of the cement grout and the early compression strength of a concretion body, improves the flow deformation feature and the movable shearing force of the grout and realizes controllable grout diffusion distance.
Owner:BEIJING CHINA COAL MINE ENG CO LTD
Method for preparing polymer-coated nano-cluster core-shell microsphere
InactiveCN101559922AIncrease concentrationIncrease with increasing concentrationNanostructure manufacturePolymer scienceIn situ polymerization
The invention relates to a method for preparing a core-shell microsphere taking nano-cluster as a core and polymer as a shell by an in-situ polymerization method. The method comprises three steps of preparing nano-particles, preparing the nano-cluster and preparing the core-shell microsphere, wherein the organic phase nano-particles can be prepared by a two-phase method, a phase transfer method or a high-temperature thermal decomposition method; the nano-cluster is prepared by a method of taking oil drops as a template; the polymer shell is prepared by adopting the in-situ polymerization method; the size of the microsphere can be regulated by changing the amount of surfactant; and the thickness of the polymer shell can be achieved by adjusting the concentration of polymeric monomer. The method is a novel method combining the nano-luster with the polymer. The polymer-coated nano-cluster core-shell microsphere prepared by the method not only improves the stability and biocompatibility of the nano-cluster, but also introduces new chemical functions so as to integrate the functions of the nano-cluster and the polymer. Therefore, the method provides the novel multifunctional material with good stability for research on biomarkers, drug detection and sensors.
Owner:JILIN UNIV
Film-coating liquid of vanadium dioxide thin film and preparation method and application of thin film
The invention belongs to the field of chemical functional materials and discloses a film-coating liquid of a vanadium dioxide thin film and a preparation method and application of the vanadium dioxide thin film. The film-coating liquid of the vanadium dioxide thin film comprises the following solutes in percentage by weight: a compound of tetravalent vanadium with the mol concentration of 0.001-10Mol / L and addictive with mass percentage of 0.01-40, wherein the addictive is selected from one or more of oleinic acid, hydrochloric acid, hydrofluoric acid, aqueous ammonia, hydrogen peroxide, glycol, glycerol, oleyl amine, cetyl trimethylammonium bromide, tetraproylammonium bromide and polyving akohol. The invention also discloses a preparation method of the vanadium dioxide thin film and can obtain a rutile type vanadium dioxide thin film with high visible transmissivity and infrared intelligent regulation and control capability, so that the thin film prepared by the method can meet energy-saving windows with different application requirements. The invention has the advantages of simple preparation process, favorable safety and suitability for large-scale industrial preparation and generalization.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Preparation method and application method of saline-alkali soil conditioner
ActiveCN104610974AIncrease exchange volumeImprove stress resistanceAgriculture tools and machinesOrganic fertilisersCation-exchange capacityAlkali soil
The invention relates to a preparation method and application method of a saline-alkali soil conditioner. The preparation method comprises the following steps: mixing a peat or lignite raw material containing humic acid with well ground attapulgite ore powder at a ratio (0-1):1; then, spraying concentrated sulfuric acid accounting for 80-110% of the total weight of the mixture under the condition of stirring or kneading; feeding into a curing cabin, and stacking for curing or aging for 24h; and finally crushing the cured material into 80-mesh fine powder, thus obtaining the saline-alkali soil conditioner. The saline-alkali soil conditioner can be prepared into a granular product through granulating and drying so as to be used or can be premixed with other acidic organic and inorganic fertilizers and then used; the use amount of the saline-alkali soil conditioner is 0.6-0.8 ton per hectare. The saline-alkali soil conditioner integrates the physical and chemical functions such as chemical salifying, complexing, neutralizing, ion exchange, adsorption and desorption, passivation and immobilization, alkali efflorescence prevention and demulsification, is capable of remarkably improving the cation exchange capacity of soil, desorbing and leaching salt groups and basic groups and remarkably reducing the pH value; film land in which the saline-alkali soil conditioner is used can ensure high yield of crops in the same year.
Owner:甘肃西部凹凸棒石应用研究院
Preparation method of nano-grade layered silver-carrying-amino acid complex antibacterial agent
InactiveCN102599164BImprove stabilitySolve technical problems that are prone to discolorationBiocideDisinfectantsSalt resistanceWater baths
The invention discloses a preparation method of a nano-grade layered silver-carrying-amino acid complex antibacterial agent. The method comprises the steps that: (1) silver salt, amino acid, and water are mixed according to a molar ratio of 1:1:2.7; the mixture is stirred for 30min under room temperature, and is stirred for 15min in a water bath with a temperature of 50 DEG C, wherein a stirring speed is 800r / min, such that a solution is prepared; (2) under a condition with a 50 DEG C water bath and a stirring speed of 800r / min, montmorillonite is added to the solution, and the mixture is stirred overnight under a hydro-thermal condition with a temperature of 50 DEG C, such that a material liquid is obtained; (3) solid-liquid separation is carried out; an obtained solid is dried under room temperature, such that a finished product antibacterial agent powder is obtained. The nano-grade layered silver-carrying-amino acid complex antibacterial agent is milk-white fluffy powder with excellent anti-tarnishing performance. With the method, the releasing-retardance and salt resistance of the antibacterial agent are improved. The antibacterial agent has a silver load of 18%. The antibacterial activity of the antibacterial agent is greatly improved. The method is suitable to be used in the technical field of chemical functional materials.
Owner:XIAN UNVERSITY OF ARTS & SCI
Method for improving grade of copper-molybdenum separated molybdenum concentrate of skarn copper-molybdenum ore
The invention relates to a method for improving the grade of copper-molybdenum separated molybdenum concentrate of skarn copper-molybdenum ore and belongs to a method for copper-molybdenum separation of skarn copper-molybdenum ore to obtain molybdenum concentrate. The method is characterized in that an inhibitor and a dispersant are added into a bulk concentrate regrinding ball mill to improve the monomer separation degree of molybdenum ore, meanwhile, the inhibitor and the dispersant immediately act on fresh surfaces of copper ore and gangue mineral which are produced through regrinding to enhance the chemical function, the milling grade of copper-molybdenum separated molybdenum is improved, and over-ground gangue mineral is thrown out as soon as possible, so that the implementation of copper-molybdenum separation and the grade improvement of the molybdenum concentrate are both facilitated. By adoption of the method, good copper-molybdenum separated floatation indexes are acquired, and the grade of molybdenum is remarkably improved.
Owner:CHANGCHUN GOLD RES INST
Preparation method of nickel phosphide/foamed nickel electrochemical functional hydrogen evolution material
ActiveCN110512228AWide variety of sourcesExcellent catalytic hydrogen evolution performancePhysical/chemical process catalystsLiquid/solution decomposition chemical coatingHydrogenNickel oxide hydroxide
Relating to the technical field of hydrogen energy application, the invention discloses a preparation method of a nickel phosphide / foamed nickel electrochemical functional hydrogen evolution material.The method includes: pretreatment of a foamed nickel current collector, preparation of a chemical nickel-phosphorus plating solution, loading of a chemical nickel-phosphorus plating coating on the surface of a foamed nickel sheet, preparation of a nickel hydroxide / foamed nickel precursor containing a nickel-phosphorus coating, and preparation of a nickel phosphide / foamed nickel self-supporting electrode. The nickel phosphide / foamed nickel self-supporting electrode prepared by the method provided by the invention has excellent electrochemical catalytic hydrogen evolution performance, efficientand stable properties, and wide application range, the required materials have wide sources, the preparation process is convenient, the requirement for the pH value condition is wide, the preparationprocess is green and pollution-free, the technical implementation process is concise, easy to operate, and low in cost, and is easy for industrial popularization.
Owner:YANSHAN UNIV
Thermal insulation coating and preparation method thereof
InactiveCN103850122AImprove insulation lifeGood heat insulationFibre treatmentEnvironmental resistanceThermal insulation
The invention relates to the technical field of coatings and particularly relates to a thermal insulation coating for outdoor textiles. The thermal insulation coating comprises 12-15% of titanium dioxide, 3-5% of coalescing agent, 37-45% of waterborne polyurethane resin, 17-25% of waterborne polyester resin, 3-5% of glass beads, 3-5% of auxiliary and water. The substances are added at different times and are prepared into a finished product under the control of different stirring rotation numbers. When coated on a textile, the thermal insulation coating not only has water resistance, ultraviolet resistance and other basic physical and chemical functions, but also is environment-friendly, free of generating organisms harmful to human bodies, particularly favorable in thermal insulation effect and long in thermal insulation life; after the thermal insulation coating is used in a rugged environment for a period of time, the inside and outside thermal insulation difference can be still kept at 23+ / -2 DEG C.
Owner:纪冠峯
Compound high-efficiency flocculating agent
InactiveCN101519237AAdsorptiveWith flocculation abilityWater/sewage treatment by flocculation/precipitationWater qualityHydrolysis
The invention relates to a compound high-efficiency flocculating agent used for seriously polluted water. The flocculating agent takes water soluble polymer polyacrylamide as main materials, takes water soluble polymer acrylic acid, hydroxyethyl cellulose and ethyl acrylate as active coagulant aid, takes ferrous sulphate and aluminium sulphate of inorganic salts as catalyzing flocculating agent, uses the configured universal chemical industrial production equipment and adopts the technique processing technologies of metering blending, synthetic reaction, stabile concentration, vacuum hydrolysis and spray drying and the like; and a compound high-efficiency flocculating agent with high polymerization degree, high relative molecular quality, low use amount and simple use method is developed. Due to the unique molecular structure and chemical function, the compound high-efficiency flocculating agent has stronger absorption and flocculating effect to fine particles in seriously polluted water, can absorb the fine particles containing various inorganic substances and difficult degradable organic substances in the seriously polluted water and flocculate the fine particles into floccules, and can realize the purpose of improving and purifying the water quality after the flocculating groups are removed. The flocculating agent is especially applicable to the industrial wastewater treatment of seriously polluted enterprises of paper-making, printing and dyeing, leather-making, electroplating, food and chemical engineering and the like.
Owner:SIPING HAITE ENVIRONMENT PROTECTION EQUIP
Low-temperature preparation method and application of vanadium dioxide film
InactiveCN101805131ALower phase transition temperatureStable phase transition propertiesVanadium dioxideRoom temperature
The invention belongs to the field of chemical functional materials, relating to a low-temperature preparation method and application of a vanadium dioxide film. The preparation method adopts vanadyl acetylacetonate with low toxicity as a reactant; at the temperature of 250 DEG C -750 DEG C, the vanadium dioxide film with phase change characteristics is obtained under the condition of controlling sintering atmosphere. The phase change temperature of the film can be adjusted to be approached to the room temperature. The method has small energy consumption, simple preparation technology and favorable safety; and the obtained vanadium dioxide film has low sintering temperature and is suitable for industrial production in a large scale.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Method for preparing natural sunscreen and skin whitening components in cosmetics by utilizing fruits
InactiveCN106333894AImprove health statusPrevent agingCosmetic preparationsToilet preparationsIrritationRoom temperature
The invention discloses a method for preparing natural sunscreen and skin whitening components in cosmetics by utilizing fruits. Fruits sold on the market are cleaned twice with tap water; after the fruits are diced and weighed, carbohydrate which accounts for 5-30% the weight of the fruits and water which accounts for 1-3 times the weight of the fruits are added to completely dissolve sugar; the solid-liquid mixture is placed in a sterile fermentation tank and is subjected to controlled temperature fermentation for 90 days at room temperature of 20-39 DEG C; unsealing is performed after a fermentation period is due, and fermentation stock solutions are filtered and extracted in a sterile chamber. After the fermentation stock solutions undergo sterility detection, the fermentation stock solutions of different fruits are used independently or mixed proportionally, and natural perfume is added; and after the sterile test of the fermentation stock solutions is passed, filling is performed to obtain sunscreen components of the cosmetics. The sunscreen components are prepared by natural fermentation of fruit plants, and the sunscreen components have no artificial color and chemical functional components and have no adverse irritation to the skin.
Owner:LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Preparation method of nano-grade layered silver-carrying-amino acid complex antibacterial agent
InactiveCN102599164AImprove stabilitySolve technical problems that are prone to discolorationBiocideDisinfectantsSalt resistanceWater baths
The invention discloses a preparation method of a nano-grade layered silver-carrying-amino acid complex antibacterial agent. The method comprises the steps that: (1) silver salt, amino acid, and water are mixed according to a molar ratio of 1:1:2.7; the mixture is stirred for 30min under room temperature, and is stirred for 15min in a water bath with a temperature of 50 DEG C, wherein a stirring speed is 800r / min, such that a solution is prepared; (2) under a condition with a 50 DEG C water bath and a stirring speed of 800r / min, montmorillonite is added to the solution, and the mixture is stirred overnight under a hydro-thermal condition with a temperature of 50 DEG C, such that a material liquid is obtained; (3) solid-liquid separation is carried out; an obtained solid is dried under room temperature, such that a finished product antibacterial agent powder is obtained. The nano-grade layered silver-carrying-amino acid complex antibacterial agent is milk-white fluffy powder with excellent anti-tarnishing performance. With the method, the releasing-retardance and salt resistance of the antibacterial agent are improved. The antibacterial agent has a silver load of 18%. The antibacterial activity of the antibacterial agent is greatly improved. The method is suitable to be used in the technical field of chemical functional materials.
Owner:XIAN UNVERSITY OF ARTS & SCI
Petroleum drilling plugging and pressure-bearing agent and method of preparing same
InactiveCN109705827ARelaxed environmentReduce economic costsDrilling compositionWell drillingMicro gap
A petroleum drilling plugging and pressure-bearing agent and a method of preparing same. The plugging and pressure-bearing agent includes: bentonite, elastic particles, oil-soluble resin, asbestos powder, filler, an accelerator and a reinforcing curing agent. The plugging and pressure-bearing agent can effectively plug a gap being smaller than 3 mm; at a high temperature of 150 DEG C, pressure bearing capacity reaches 9 MPa, so that the product satisfies the demand of long-time high-temperature high-pressure-bearing situation. The product can be used for plugging micro-gaps in high temperaturemud rocks at the deep place of an extra deep well and collapse in fractured formations. The product achieves the plugging and anti-collapse effect through the chemical functions, has great pressure-bearing capacity, greatly prolongs the period of collapse, and guarantees safety of deep well drilling.
Owner:CHINA PETROLEUM & CHEM CORP +1
Sol-gel process for the functionalisation of a surface of a solid substrate
InactiveCN101010133AReduce consumptionFast and uniform functionalizationMaterial nanotechnologyPeptide librariesOligonucleotide chipSolid substrate
The invention relates to a sol-gel process for the functionalisation of a surface of a solid substrate in order to provide said surface with chemical functions that can react with chemical or biological molecules, i.e. chemical functions that can immobilise, attach, graft biological or chemical molecules. The invention can be used, for example, in the preparation of chemical and biological sensors, such as for the production of chips comprising DNA, oligonucleotides, sugars, peptides and small organic molecules.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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