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407 results about "Substance amount" patented technology

Amount of substance (also called chemical amount) is a quantity defined by standards to measures the size a group of individual elementary entities, such as atoms, molecules and electrons, along with other particles. The International System of Units (SI) defines the amount of substance to be equal to the number of elementary entities present.

Image processing system, image processing method, and computer readable medium

Provided is an image processing system, including a depth calculating section that calculates a depth of an object from a surface of a body, the object existing inside the body; a light receiving section that receives light from the object; and a substance amount calculating section that calculates an amount of a substance, which generates the light received by the light receiving section, inside the object based on the depth of the object calculated by the depth calculating section and an amount of light received by the light receiving section.
Owner:FUJIFILM CORP

Method and apparatus for providing facial rejuvenation treatments

An apparatus provides automatically controlled facial rejuvenation treatments and is comprised of a scanner for scanning a patient's face, a treatment robot, including a plurality of dermatological devices for treatment of facial skin, and a computer coupled to the scanner and robot for determining a treatment protocol of the patient's face based on a scanned input of the patient's face and for generating a plurality of commands for the treatment robot for movement and / or control of the plurality of dermatological devices for the automated treatment of the skin of the patient's face. A dermatological laser, needle injector, and / or air injector are used. The needle injector injects a minute amount of substance at a multiplicity of points within a computer-identified treatment area on the patient's face.
Owner:LEMCHEN MARC S

Method and apparatus for providing facial rejuvenation treatments

An apparatus provides automatically controlled facial rejuvenation treatments and is comprised of a scanner for scanning a patient's face, a treatment robot, including a plurality of dermatological devices for treatment of facial skin, and a computer coupled to the scanner and robot for determining a treatment protocol of the patient's face based on a scanned input of the patient's face and for generating a plurality of commands for the treatment robot for movement and / or control of the plurality of dermatological devices for the automated treatment of the skin of the patient's face. A dermatological laser, needle injector, and / or air injector are used. The needle injector injects a minute amount of substance at a multiplicity of points within a computer-identified treatment area on the patient's face.
Owner:LEMCHEN MARC S

Image processing system, image processing method, and computer readable medium

Provided is an image processing system, including a depth calculating section that calculates a depth of an object from a surface of a body, the object existing inside the body; a light receiving section that receives light from the object; and a substance amount calculating section that calculates an amount of a substance, which generates the light received by the light receiving section, inside the object based on the depth of the object calculated by the depth calculating section and an amount of light received by the light receiving section.
Owner:FUJIFILM CORP

Preparation method and application of phosphorus-nitrogen-carbon-containing aggregate and intumescent flame retardant

The invention discloses a preparation method of a phosphorus-nitrogen-carbon-containing aggregate and intumescent flame retardant of a nano-sheet structure. The preparation method is characterized in that phytic acid, melamine and a solvent are prepared, the substance amount ratio of the phytic acid to the melamine is 1: 3 to 1: 15, and 20-50 ml of the solvent is added into every 0.01 mol of the melamine; the melamine is added into a reaction container provided with a thermometer and a stirrer, the solvent is added with stirring, the phytic acid is added at the temperature of 20-40 DEG C, and a reaction is conducted with stirring for 20-50 minutes, so that reaction liquid is obtained; and the reaction liquid is poured into a reaction still to react for 24-56 h at the temperature of 70-120 DEG C, cooling and suction filtration are conducted, solid is washed with ethyl alcohol and then washed with water till the pH is 7, and the solid is dried, so that the flame retardant is obtained. The preparation method is simple and environmentally friendly, and the synthesized phosphorus-nitrogen-carbon-containing aggregate and intumescent flame retardant of the nano-sheet structure has good compatibility with a polymer matrix and has good flame retardance.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Method for preparing hydroxyapatite-natural macromolecular nano compound with one-pot method

The invention discloses a method for preparing a hydroxyapatite-natural macromolecular nano compound with a one-pot method. The method disclosed by the invention has the core characteristics that raw material powder is directly added, and mainly comprises the following steps: adding calcium salt and phosphate into a natural macromolecular solution according to the amount of substance ratio of Ca / P of 5 to 3; adjusting the pH of the system to 10 to 12 by using an alkali solution, wherein calcium ions, phosphate ions and hydroxyl ions in the system and natural macromolecules have an in-situ co-precipitation reaction; washing a reaction product to be neutral, and drying to obtain the hydroxyapatite-natural macromolecular nano compound; grinding and sieving to prepare nano composite particle products with different specifications. The method disclosed by the invention is simple and has moderate reaction conditions and small energy consumption; the obtained hydroxyapatite-natural macromolecular nano compound has good granularity, rigidity, microscopic appearance and crystallinity, and can be widely applied to the fields of bone defect repairing tissue engineering materials and medical equipment and the like of dental department, orthopedic surgery and the like.
Owner:HUBEI SAILUO BIOLOGICAL MATERIAL CO LTD

Graphene nano sheet and SnS2 composite nano material and synthesis method thereof

The invention discloses a graphene nano sheet and SnS2 composite nano material and a synthesis method thereof. The composite material is characterized by being formed by compounding a graphene nano sheet and a SnS2 nano material, wherein the substance amount ratio of the graphene nano sheet to the SnS2 nano material is 1:1-4:1. The preparation method comprises the following steps of: preparing a graphite oxide nano sheet from graphite by using a chemical oxidation method, then dissolving L-cysteine into deionized water, adding stannic chloride, and dissolving the stannic chloride with full stirring, wherein the molar ratio of the L-cysteine to the stannic chloride in the solution is 6:1-12:1; and adding the graphite oxide nano sheet into the solution, performing ultrasonic treatment so that the graphite oxide nano sheet is fully dispersed in the hydrothermal reaction solution, and synthesizing the graphene nano sheet and SnS2 composite nano material by a one-step hydrothermal method, wherein the mass ratio of the graphene nano sheet to the SnS2 nano material in the composite material is 1:1-4:1. The method has the characteristics of mild reaction condition and simple process. The synthesized graphene nano sheet and SnS2 composite nano material serving as an electrode material of a new energy battery or serving as other materials has wide application.
Owner:ZHEJIANG UNIV

Method for accurately measuring absorbed phase density of methane on shale

The invention relates to a method for accurately measuring absorbed phase density of methane on shale. The method comprises the following steps: 1) smashing a piece of shale sample to be 60-80 meshes, and dividing the powder into two; 2) performing a volumetric method isothermal adsorption experiment on the first shale sample, and obtaining a calculation model of the amount n, adsorbing CH4, of the adsorbed state methane substance; 3) performing a weight method isothermal adsorption experiment on the second shale sample, and obtaining a calculation model of the mass m, adsorbing CH4, of the adsorbed state methane; 4) performing adsorbed phase volume correction on the calculation model of the amount n, adsorbing CH4, of the adsorbed state methane substance, obtained in the step 2) and the calculation model of the mass m, adsorbing CH4, of the adsorbed state methane, obtained in the step 3), so as to obtain the corrected substance amount calculation model and the corrected mass calculation model of the adsorbed state methane; 5) according to a definition formula of the amount of substance, combining with the two calculation models in the step 4), and determining the mass m, adsorbing CH4, and the volume V adsorption of the adsorbed state methane; 6) according to the definition of the density, determining an exact adsorption value of the adsorbed phase density rho of methane on the shale.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Handheld medical substance dispensing system, apparatus and methods

Various handheld medical dispensing configurations and methods including the following: Handheld medical dispensing system comprises a syringe, which has a plunger, releasably mounted to syringe actuation apparatus, the apparatus having an actuator configured such that it can move the plunger more than once to dispense a plurality of amounts of substance from the syringe. A method of dispensing fluid from a syringe comprises holding a medical substance delivery system including a syringe, which has a needle, and which is secured to syringe actuation apparatus configured to dispense predetermined amounts of the substance from the syringe, penetrating the needle at one patient site and using the apparatus to deliver a predetermined amount of the substance, and penetrating the needle at another patient site and using the apparatus to deliver a predetermined amount of the substance.
Owner:ACCUNIT

Novel multifunctional mesoporous glass bracket with biological activity as well as preparation method and purpose thereof

The invention provides a multifunctional mesoporous glass bracket with biological activity, and the glass bracket with biological activity has a amorphous form glass structure, and 90%-99.999% of macropores are communicated; the glass bracket with biological activity also contains 1-15 mol% of copper, which is based on calculation of total substance amount of the glass bracket with biological activity CuO-CaO-P2O5-SiO2. The invention also provides a preparation method of multifunctional mesoporous glass bracket with biological activity, which employs a sol-gel method to prepare mesoporous glass bracket with biological activity containing different copper contents; the copper-containing mesoporous glass bracket with biological activity has the advantages of blood vessel forming potential, ossification property, medicament deliver and antibacterial property.
Owner:中科硅诺(太仓)生物材料科技有限公司

Composite anode material LiMnPO4-Li3V2(PO4)3/C for lithium ion battery and preparation method of material

The invention relates to a composite anode material LiMnPO4-Li3V2(PO4)3 / C for a lithium ion battery and a preparation method of the material. LiMnPO4 and Li3V2(PO4)3 in the LiMnPO4-Li3V2(PO4)3 / C are stoichiometric compounds; a substance amount ratio of the LiMnPO4 to the Li3V2(PO4)3 is equal to 1 / x, wherein x is more than 0 and is less than or equal to 1; and the carbon content in the compound is 1wt%-8wt%. The preparation method of the composite anode material comprises the following steps of: dissolving a lithium source compound, a manganese source compound, a vanadium source compound and a phosphorus source compound in de-ionized water according to a mol ratio of Li to Mn to V to P of (1+3x) to 1 to 2x to (1+3x), thus obtaining a solution, wherein x is more than 0 and is less than or equal to 1; secondly, carrying out spray drying on the solution to obtain precursor powder; heating the precursor powder in a tube furnace; mixing products after heat treatment with a carbon source matter, carrying out ball milling on the mixture to obtain slurry, and then drying the slurry; pre-sintering the slurry in inert atmosphere, and then roasting and cooling the slurry to obtain the composite material LiMnPO4-Li3V2(PO4)3 / C. The composite anode material for the lithium ion battery prepared by the method has high capacity and good rate capability, and is applicable to a power battery.
Owner:新乡市中天新能源科技股份有限公司

Method for synthesizing linear alkylbenzene

The invention provides a synthetic method for linear alkylbenzene. By taking linear olefin containing 2 to 20 carbon atoms and benzene as raw materials under the reaction condition of a temperature being 10 to 450 DEG C, a pressure being 0.1 to 15MPa, the ratio of the amount of substances of benzene and the olefin is 2 to 100:1 and the airspeed of a feeding total mass is 0.1 to 20 h<-1>, and an alkylation reaction is carried out by catalyzing by a solid acid catalyst, the linear alkylbenzene is obtained. The solid acid catalyst is M-SBA-15 typed mesopore molecular sieve catalyst or compound solid acid catalyst which is obtained by modifying the M-SBA-15 typed mesopore molecular sieve catalyst. The catalyst adopted by the invention has no corrosion, is friendly to environment and has good activity stability; therefore, higher olefin conversion and reaction selectivity can also be obtained even under comparatively lower temperature. Furthermore, the device is stable and has long operation time; therefore, frequent switching operation on the reaction and regeneration of the reactor can be avoided.
Owner:ZHEJIANG UNIV OF TECH

Novel method for preparing lithium ion battery anode ternary material LiCoxNiyMn2O2

The invention relates to a preparation method of ternary system material, in particular to a preparation method of lithium cobalt nickel manganese oxide ternary system material for lithium ion batteries. The invention applies ensured ternary system material salt as raw material. After needed matching weight, by means of eve dissolving and mixing, a composite metal oxide prepared by a spray-roasting method is used as a fore body. The fore body is mixed with a lithium-source compound according to the substance amount of 1:1-1.5, and then roasting is carried out at the temperature of 700 to 1000 degrees centigrade to obtain the ternary system material. The tail gases, such as vapor, acidic gas, generated in the spray-roasting process are absorbed by a washing tower to obtain acid. The invention has the advantages of advanced technique, stable production, low cost, no waste water discharge, environmental protection, high product purity, even granularity, high crystallinity, etc.
Owner:ZHEJIANG HUAYOU COBALT

Method for producing sodium alginate by applying brown algae

The invention discloses a method for producing sodium alginate by applying brown algae. The method is characterized by treating the brown algae by utilizing a fenton method to obtain a treatment product and extracting the sodium alginate from the treatment product, wherein the particular process of treating the brown algae by utilizing the fenton method comprises the following steps of soaking the brown algae in a ferrous ion solution, wherein the weight ratio of the brown algae and ferrous ions in the ferrous ion solution is (500:1)-(10:1); then adding a hydrogen peroxide solution to the ferrous ion solution, and treating for 1-100 minutes, wherein the amount of substance ratio of the ferrous ions and hydrogen peroxide in a mixed solution is not lower than 1:1. The method disclosed by the invention has the advantages of low energy consumption, convenient operation, low water consumption and fast degradation, is used for increasing the output of the sodium alginate produced by applying the brown algae and especially provides a simple, convenient and effective method for producing the low-viscosity sodium alginate.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Method for preparing ZSM-5 molecular sieve without template agent

The invention relates to a method for preparing a ZSM-5 molecular sieve without template agent. The method comprises the following steps of: smashing the mineral resource containing silicon oxide and aluminum oxide into powder, and roasting; leaching the roasted powder with acid liquor, regulating the amount of substance ratio of the silicon oxide to the aluminum oxide in solid phase to be (14:1)-(85:1), separating the solid phase, and removing impurities from the solid phase; mixing the obtained solid phase, the alkali and the water in the mass ratio of 1:(0.05-0.5):(5-30), carrying out hydrothermal reaction at 130-220 DEG C to crystallize for at least 18 hours, and removing impurities, thus obtaining the ZSM-5 molecular sieve. The method has the characteristics of adding no template agent, adding no additional silicon source or aluminum source, and saving the cost; the technology is simple to operate, the conditions are easy to control, and high value added utilization of waste resources is realized.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Polyurethane-based pressure-sensitive adhesive

Polyurethane-based pressure-sensitive adhesive wherein the polyurethane comprises the chemical reaction product of at least the following starting materials:a) polyisocyanates comprising at least one aliphatic or alicyclic diisocyanate and at least one aliphatic or alicyclic polyisocyanate having an isocyanate functionality of three or more than three, the amount-of-substance fraction of the aliphatic or alicyclic polyisocyanates having an isocyanate functionality of three or more than three as a proportion of the polyisocyanates being at least 18 per cent, andb) at least one pressure-sensitively adhesive, hydroxyl-functionalized polyurethane prepolymer.
Owner:TESA SE

Composite oxide supported ruthenium-based ammonia synthesis catalyst and its preparation method

The invention provides a ruthenium catalyst for ammonia synthesis with high activity which has composite oxide as a carrier, and a preparation method thereof. The ruthenium catalysts for ammonia synthesis comprises composite oxide as the carrier, metal Ru as an active component, wherein the capacity is 1-12 wt.% of the active carbon weight calculated based on Ru. The composite oxide is formed by magnesium and one or two or more than two nonferrous metal of: 1) alkaline earth but not magnesium; 2) alkali metals; 3) rare earth metal, wherein the ratio of magnesium and the nonferrous metal based on the amount of substance is 0.2-25:1. The catalyst of the invention has higher catalytic activity and better application prospects compared with the existing ruthenium catalyst for ammonia synthesis which has oxide as a carrier.
Owner:ZHEJIANG UNIV OF TECH

Lithium adsorbent and preparation method of lithium adsorbent

The invention discloses a lithium adsorbent and a preparation method of the lithium adsorbent. The preparation method comprises the following steps: step S1: sufficiently mixing an aluminum chloride solution with the lithium compound to form a reaction preliminary body, wherein the amount of substance of the aluminum chloride to the lithium compound is (1.8 to 2.2) to 1, and the lithium compound is one of the lithium hydroxide, lithium carbonate and lithium chloride; step S2: adding a sodium hydroxide solution in the reaction preliminary body, wherein the amount of the substance of the sodium hydroxide to the aluminum chloride is (2.5 to 3.5) to 1; reacting to generate LiCl.2.2-2.8Al(OH)3.2.7-3.9H2O so as to form a first product; step S3, performing solid-liquid separation, drying, grinding and smashing on the first product to form a second product; step S4, adding adhesive and the liquid chlorine in the second product to realize mixing granulation, thereby forming a third product; and step S5, crushing and sieving the third product to obtain the lithium adsorbent. The preparation process of the lithium adsorbent is simple and efficient, the prepared lithium adsorbent is excellent in property, and the raw material has great selectivity, so that the preparation cost of the lithium adsorbent is effectively saved.
Owner:ЦИНХАЙ СОЛТ ЛЕЙК ИНДАСТРИ ГРУП КО ЛТД

Method for removing phosphorus in water by utilizing ferric salt-modified eggshells

The invention belongs to the processing field of sewage containing phosphorus, and discloses a method for removing phosphorus in water by utilizing ferric salt-modified eggshells. The method comprises the following steps: the modified process of the eggshell: mixing 0.1-0.5mol / L of ferric salt solution and eggshell power at the temperature of 10-60 DEG C, wherein the mass ratio of substance amount of ferric salt to the eggshell powders is 0.001-0.0015mol / g; subsequently continually stirring for 24h; filtering; finally placing into an oven; drying at the temperature of 100-105 DEG C; sieving through a 100-mesh sieve to obtain the modified eggshell powders; and placing the modified eggshell powders into a dryer for later use; and phosphorous removal process in sewage: adding 0.1-1g of modified eggshell powders to 100mL of solution containing phosphorus with the concentration of 0.2-50mg (P) / L, wherein the pH of the solution is 3-10; performing constant temperature vibration at the temperature below 10-40 DEG C in the speed of 50-200r / min; and carrying out 0.45 mu m filter membrane after vibrating for 10min-6h.
Owner:常熟紫金知识产权服务有限公司

Handheld medical substance dispensing system, apparatus and methods

Various handheld medical dispensing configurations and methods including the following. Handheld medical dispensing system comprises a syringe, which has a plunger, releasably mounted to syringe actuation apparatus, the apparatus having an actuator configured such that it can move the plunger more than once to dispense a plurality of amounts of substance from the syringe. A method of dispensing fluid from a syringe comprises holding a medical substance delivery system including a syringe, which has a needle, and which is secured to syringe actuation apparatus configured to dispense predetermined amounts of the substance from the syringe, penetrating the needle at one patient site and using the apparatus to deliver a predetermined amount of the substance, and penetrating the needle at another patient site and using the apparatus to deliver a predetermined amount of the substance.
Owner:ACCUNIT

Organic lead inhibitor and application thereof

The invention discloses an organic lead inhibitor and application thereof. A preparation method of the organic lead inhibitor includes the steps that polyacrylamide with the molecular weight ranging from 200 to 1000000 is reacted with carbon disulfide for 1-12 h at 20-80 DEG C in the presence of alkali, and the organic lead inhibitor is obtained after reaction, wherein the amount of substance of the carbon disulfide is larger than 0 and equal to or small than that of acrylamide monomers in the polyacrylamide, and the molar ratio of the alkali to the carbon disulfide is 1-1.2:1. The organic lead inhibitor can be applied to copper-lead separation or copper-zinc separation or copper-lead-zinc separation. The embodiment of the organic lead inhibitor can effectively inhibit lead ore and is safe, low in toxicity, convenient to use and capable of effectively solving the problems of poor operating environment, difficult wastewater treatment and serious environmental pollution caused by an existing lead inhibitor.
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY

Method for preparing catalyst for hydrogenation reaction of dimethyl oxalate and product

The invention discloses a method for preparing a catalyst for a hydrogenation reaction of dimethyl oxalate, which comprises the following steps of: dissolving copper nitrate in water at room temperature to prepare aqueous solution of copper nitrate, wherein the concentration of the aqueous solution is between 0.04 and 1.0 mol / L; adding urea to dissolve a solid completely, adding silica sol with stirring, and continuing to stir for over 4 hours; adding a reaction mixture into a hydrothermal kettle, and keeping the temperature between 50 and 250 DEG C until the pH value is between 6 and 7; and filtering, and washing, drying, roasting and reducing the obtained solid to obtain a catalyst with 0.5 to 50 percent of the capacity of copper, wherein a ratio of the amount of substance of the coppernitrate to the urea is 1: (2-10). The invention also discloses a catalyst prepared by the method. In the preparation method, the catalyst is prepared from the low-cost silica sol serving as a siliconsource and the urea serving as a precipitant by a method of uniform precipitation, so the method has a simple process condition and is favorable for industrial production.
Owner:ZHEJIANG UNIV

Discoloration indicator for shelf life of perishable product and preparation method thereof

ActiveCN102735796ADistinguishable color changeAdjustable color change rateAnalysis using chemical indicatorsGold nanorodExtinction
The invention provides a discoloration indicator for shelf life of a perishable product and a preparation method thereof. The preparation method comprises the following steps: 1) preparing a surfactant aqueous solution containing chloride or bromide ions, a soluble ascorbate aqueous solution, a soluble weak acid or weak acid salt aqueous solution and a soluble silver salt solution, wherein concentration of each of the four aqueous solutions is not less than 0.1 mM; and 2) mixing gold nanorod with a largest extinction wavelength not less than 700nm with the four solutions in the step 1) to obtain the indicator, and conducting a metachromatism. During mixing, concentration of gold nanorod in the indicator needs to be adjusted to realize an optical density of the solution no less than 0.1cm<-1> at 500-520nm; usage amount of soluble silver salt in the indicator is no less than 4 times an amount of substance of gold in the gold nanorod solution matter; and usage amount of other reagent is adjusted according to shelf life of an indicating object. According to the invention, discoloration process of the perishable product with change of temperature is tracked and recorded to simulate a metamorphic process of the product to be indicated, and quality and shelf life of the product are visually indicated through the color.
Owner:PEKING UNIV

Reusable substance amount sensor in prodn. of organic luminous device

The present invention relates to a method for controlling the deposition of organic materials in the manufacture of an organic light-emitting device, the method comprising: depositing an organic material in a deposition area to form a layer of an organic light-emitting device; setting a movable sensor, when the sensor moves to A signal indicative of the deposition rate and thickness of the organic material forming the layer is provided in the deposition zone and when covered during the deposition step. The method further includes: controlling the deposition of the organic material based on the signal to control the deposition rate and thickness of the organic material forming the layer; moving the movable sensor from the deposition area to a cleaning position; and removing the sensor from the movable sensor. Organic materials enable removable sensors that can be reused.
Owner:GLOBAL OLED TECH

Synergistic agent for flue gas desulfurization process adopting wet limestone-gypsum method and application thereof

The invention discloses a synergistic agent for a flue gas desulfurization process adopting a wet limestone-gypsum method and application thereof, and belongs to the technical field of flue gas SO2 control directly applied to atmospheric environment protection. The synergistic agent is sodium pyroborate or hydrate thereof. The synergistic agent can be applied according to the following mode: the sodium pyroborate (molecular formula Na2B4O7) or hydrate thereof is dissolved in water to obtain a synergistic agent suspension; and the synergistic agent suspension is added in a desulfurization absorber liquid holding groove, wherein in the desulfurization absorber liquid holding groove, the synergistic agent suspension is added in the sodium pyroborate with the amount-of-substance concentrationof 1.46*10<-4>-7.29*10<-3>mol.L<-1>. According to the synergistic agent provided by the invention, the desulfurization efficiency can be remarkably improved on the premise of not changing a traditional desulfurization system.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Composite flocculating agent for flocculation treatment of fracturing flow-back fluid and preparation method thereof

The invention provides a composite flocculating agent for flocculation treatment of a fracturing flow-back fluid and a preparation method thereof. The composite flocculating agent comprises the following raw materials: water glass, a coupling agent, an acrylamide monomer, a cationic monomer, a crosslinking agent and an initiating agent, wherein according to amounts of substances, the ratio of water glass to the acrylamide monomer is 1 to (1-10), and the ratio of the acrylamide monomer to the cationic monomer is (0.5-10) to 1; and according to mass, the amount of a silane coupling agent KH570 accounts for 0.005-0.05% of that of water glass, the amount of the crosslinking agent accounts for 0.005-0.1% of that of the acrylamide monomer, and the amount of the initiating agent accounts for 0.005-0.1% of the total mass of the acrylamide monomer and the cationic monomer. The preparation method disclosed by the invention is used for preparing the SiO2-cationic polyacrylamide composite flocculating agent by adopting an aqueous solution polymerization process, does not introduce an organic solvent, cannot cause pollution to the environment, and is simple in production process, mild in reaction and easy to perform; and the flocculating agent disclosed by the invention has a good flocculation treatment effect in a flocculation treatment process of a shale gas fracturing flow-back fluid.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Handheld medical substance dispensing system, apparatus and methods

Various handheld medical dispensing configurations and methods including the following: Handheld medical dispensing system comprises a syringe, which has a plunger, releasably mounted to syringe actuation apparatus, the apparatus having an actuator configured such that it can move the plunger more than once to dispense a plurality of amounts of substance from the syringe and having a housing adapted for singled handed administration of an injection.
Owner:ACCUNIT

Method for preparing high-purity pseudo-boehmite

The invention belongs to the technical field of inorganic materials and relates to a method for preparing high-purity pseudo-boehmite. The method for preparing the high-purity pseudo-boehmite comprises the following steps: under the condition of stirring, adding hydrolysate containing a pore-forming agent into an aluminium isopropoxide-isopropanol solution according to a given ratio, and carrying out hydrolysis reaction at the temperature of 60-80 DEG C for 2-8 hours, wherein the hydrolysate containing the pore-forming agent is prepared from deionized water and isopropanol in a mass ratio of 1:(0.5-3) and in ratio by amount of substance of (2-20):1; drying hydrolysis products at the temperature of 60-260 DEG C, so that the high-purity pseudo-boehmite is obtained. The method for preparing the high-purity pseudo-boehmite has the advantages that no waste is discharged in the whole preparation process, and an environment-friendly technology is realized; and meanwhile, a reaction flow is simple, and control is easy.
Owner:DALIAN UNIV OF TECH

Method for preparing flaky calcite calcium carbonate crystal

The invention relates to a method for preparing a flaky calcite calcium carbonate crystal, which comprises the following steps of: according to the substance amount ratio of calcium chloride to sodium carbonate as 1.4-1.8:1, adding boric acid or oxalic acid as a crystal shape control agent accounting for 0.8-4.2 percent of the mass of the sodium carbonate into 0.52-3.96mol / L of sodium carbonate solution, and controlling the solution temperature to be 40-90 DEG C; taking 1.24-6.32mol / L of calcium chloride solution, and controlling the solution temperature to be 40-90 DEG C; dropwise adding the calcium chloride solution into the sodium carbonate solution, stirring as dropwise adding, then stirring at constant temperature for 0.5-2 hours, settling at room temperature for 12-36 hours, and filtering to obtain precipitates; and repeatedly washing the precipitates with water to be neutral, removing adsorbed chloride ions, then filtering, and carrying out vacuum drying at the temperature of 40-80 DEG C to prepare the flaky calcite calcium carbonate crystal. A product is confirmed as a calcite crystal through X-ray diffraction analysis; and a scanning electron microscope result shows that the crystal is regularly flaky. The method has the advantages of low cost, simple process and regular product appearance.
Owner:HENAN UNIV OF URBAN CONSTR
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