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40results about How to "Change surface charge" patented technology
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Preparation method of high-capacity monocrystalline type ternary cathode material
ActiveCN110002515AAccelerates the infiltration processEasy to storeCell electrodesSecondary cellsManganeseIncrease ph
A preparation method of a high-capacity monocrystalline type ternary cathode material comprises steps as follows: S1, a nickel cobalt manganese hydroxide precursor of a core-shell structure is prepared with a coprecipitation method, a loose and porous core is prepared by intermittently introducing a certain quantity of bicarbonate at the initial stage of core making, after core making ends, and loose flaky shells are prepared by substantially reducing the rotation speed and increasing pH; meanwhile, at the core-shell transition stage, a dispersant is added to effectively prevent agglomerationof the shells due to decrease of the rotation speed; S2, the prepared precursor and lithium salt are mixed and calcined once in the oxygen-rich atmosphere at the high temperature, and the monocrystalline type ternary cathode material is obtained. A battery is prepared from the ternary cathode material and has high capacity and good safety performance due to high lithium ion transport efficiency and reduced anisotropy in crystals. The problem of poor capacity of the material because of low lithium ion transport efficiency of monocrystalline type ternary materials is effectively solved. Besides,the monocrystalline type ternary cathode material is prepared through one-time sintering, the preparation procedure is simple, and the production cost is low.
Owner:南通金通储能动力新材料有限公司
Method for sustainably preparing nanometer cellulose
The invention discloses a method for sustainably preparing nanometer cellulose in an environment-friendly and economic mode. The preparing method includes the following steps that 1, cellulose raw materials and organic acid are hydrolyzed and esterified; 2, the treated cellulose is prewashed in a centrifugal sedimentation mode, the organic acid is separated to be continuously recycled, washed cellulose suspension liquid is dialyzed, and then reacted acid and accessory substances are removed; 3, the dialyzed suspension liquid is separated to obtain small-particle cellulose nanometer crystals; 4, cellulose solid precipitated on a lower layer of the suspension liquid is treated through a high-pressure homogenizer or an ultrasonication physical machine to obtain colloidal cellulose nanometer fibrils. According to the method, in the preparing process, the modified cellulose raw materials are synchronously hydrolyzed and esterified through relative-safety and environment-friendly food-grade organic acid; compared with inorganic strong acid, the used organic acid is low in corrosion performance, high in boiling point, small in reaction pressure and easy to control and operate, and the cellulose nanometer crystals with the stable quality and the cellulose nanometer fibril products with the stable quality can be obtained at the same time.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Compound type sludge dewatering conditioner and application method thereof
ActiveCN103113013AChange surface chargeEfficient dehydrationSludge treatment by de-watering/drying/thickeningChemical industryActive agent
The invention provides a compound type sludge dewatering conditioner which comprises the following components in parts by weight: 3-6 parts of ferric trichloride, 3-6 parts of calcium oxide, 1-2 parts of magnesium oxide, 1-4 parts of surfactant and 1-2 parts of sulfuric acid. The compound type sludge dewatering conditioner provided by the invention can realize efficient dewatering of sludge, the conditioning technology is simple and quick, the dosage of the conditioner is small, the moisture content of the dewatered sludge is reduced to below 45%, the pH value is 6-7, foul smell and the problem of capacity increase are avoided, and sludge reduction can be realized; and the compound type sludge dewatering conditioner has good environmental benefits, is favorable for subsequent sludge resource utilization, can be widely applied to the sewage and sludge treatment of the industries such as chemical industry, municipal affairs and the like, and is particularly suitable for treating the domestic sludge of urban sewage plant.
Owner:SHENZHEN WATER GRP CO LTD
Preparation of antigen-loaded polymer lipid nanosphere and application as vaccine adjuvant
ActiveCN106177974AIncrease intakeProcessing and submission is goodPowder deliveryPharmaceutical non-active ingredientsZeta potentialBiological activation
The invention relates to a polymer lipid nanoparticle, a preparation method and application thereof as a vaccine adjuvant system. The polymer nanoparticle is a solid sphere composed of a macromoleclar polymer, positively charged cationic lipid is inlaid on the surface, the nanoparticle surface can adsorb protein antigen, polypeptide antigen, viral antigen and other active drugs; the polymer nanoparticle has an average particle size of less than 300nm, a dispersion coefficient, i.e. a PDI (polydispersity) value of less than 0.2, and a Zeta potential average value of greater than 20mV. The polymer nanoparticle provided by the invention has the characteristics of uniform size, high antigen carrying rate, and good maintenance of antigen activity, when the polymer nanoparticle carries an antigen and serves as a vaccine adjuvant, the intake of antigen presenting cells (APCs) to the antigen can be increased, the activation level of antigen presenting cells is improved, and the follow-up immune response level is strengthened.
Owner:王连艳
Technique for treating fermentation wastewater by microbial fuel cell
InactiveCN105140549AChange surface chargeChange hydrophilicityFinal product manufactureBiochemical fuel cellsSodium acetateChemical oxygen demand
The invention discloses a technique for treating fermentation wastewater by a microbial fuel cell, and relates to a technique for treating wastewater. The method comprises the steps as follows: with conductive glass, carbon cloth or a carbon felt as electrode materials, active groups, polyelectrolyte multilayer films or nanoparticles / polyelectrolyte multilayer films are respectively modified on the electrode materials by an alkaline hydrolysis method, an acid hydrolysis method and a layer-by-layer self-assembly technique; the series materials are applied to an anode of a microbial fuel cell reaction device to treat the fermentation wastewater; with sodium acetate and lotus pond sludge as substrates, a microbial fuel cell system with a relatively high electricity generating rate, relatively good chemical oxygen demand (COD) removal effects and relatively high coulombic efficiency is obtained. The microbial fuel cell system is good in process repeatability, safe and reliable; the fermentation wastewater is treated; meanwhile, a relatively high electricity generating quantity and a relatively high electricity generating rate are achieved; the problems that the traditional microbial fuel cell is low in electricity generating efficiency and low in sewage COD removal rate are effectively solved; and the technique has a good industrial application prospect.
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
Method for preparing C/SiC material brake disc by carbon fiber prepreg tape
ActiveCN107573075AEnabling Content ProgrammabilityControllable areal densityFriction liningFiberCarbon fibers
A method for preparing a C / SiC material brake disc by a carbon fiber prepreg tape comprises the following steps: clipping the carbon fiber prepreg tape into a short carbon fiber tape with the length of 3-10 mm and pressing the short carbon fiber tape into a brake disc blank; carbonizing the blank to obtain a carbon / carbon preform; and finally carrying out carburizing treatment to obtain a product.Carburizing treatment comprises the steps of placing the carbon / carbon preform in a graphite crucible; heating the carbon / carbon preform for 0.5-2 hours at the temperature of 1,550-1,650 DEG C undervacuum or in an inert atmosphere; and then cooling the carbon / carbon preform in a furnace to finish carburizing treatment. A C / SiC composite material has the advantages of low cost, short process period, pollution-free preparation process, simplicity and controllability and the like on preparation of the carbon / carbon preform, and is expected to be extensively applied to a C / SiC composite brake disc.
Owner:LUOYANG INST OF SCI & TECH
Method for preparing nano FeOx/NiOy/mesoporous material catalyst, product and application of nano FeOx/NiOy/mesoporous material catalyst
InactiveCN104588067AUniform particle sizeEasy to shapeMolecular sieve catalystsWater contaminantsMesoporous materialBULK ACTIVE INGREDIENT
The invention discloses a method for preparing a nano FeOx / NiOy / mesoporous material catalyst. The method comprises the following steps: mixing and soaking an aqueous solution of Ni<2+> and Fe<3+> with a mesoporous material, drying, roasting and reducing to prepare a mixed-phase multi-metal oxide catalyst. The invention further discloses a catalyst prepared by the method and an application of the catalyst. According to the method disclosed by the invention, the mesoporous material is utilized to perform spatial definition on the growth of nano particles to obtain the nano particles with uniform particle diameters. Iron and nickel are co-loaded to further improve the shapes, the particle diameters and the dispersion of the nano particles, so that the activity of the catalyst is greatly improved, and the Fenton degradation rate and the hydrogen peroxide utilization rate of the organic substances are greatly increased. The catalyst application method is simple, the types and the proportions of the active ingredients can be precisely controlled through the reducing temperature, and multiple components co-exist in a polyvalent manner. The preparation method disclosed by the invention is simple; and the oxidant is green and environment-friendly, high in utilization rate, can directly react at a room temperature and has an industrial application prospect.
Owner:ZHEJIANG UNIV
Sludge deep dehydration method comprising wall breaking-penetrating-press filtrating process
ActiveCN102424512ACalorific value changeChange surface chargeSludge treatment by de-watering/drying/thickeningBurn treatmentFiltration
The invention relates to a sludge deep dehydration method comprising a wall breaking-penetrating-press filtrating process. The method comprises steps of: 1, a wall breaking step, wherein an organic wall breaking agent is added to sludge with a water content of 90-97%, and the mixture is mixed and stirred for no less than 5min; 2, a penetrating step, wherein a powdery penetrating agent is added tothe wall-broken sludge, and the mixture is mixed and stirred for no less than 10min; 3, a press filtrating step, wherein the wall-broken and penetrated sludge is delivered to a plate-and-frame filterpress by using a pump, and the water content of the sludge obtained after press filtration is 45-50%. The method is advantaged in that: the organic agent triethanolamine is adopted, the dosage of triethanolamine is extremely low, and triethanolamine can be completely burnt in a burning treatment, such that a compatibilization problem is avoided, and the heat value of the sludge is not influenced;a small amount of substances such as fly ash and coal powder is added to the penetrating system, such that penetration channels are formed, and water content in the sludge can flow freely; a common plate-and-frame filter press is adopted in the press filtrating process, the sludge regulated by using the wall breaking agent and the powder is press-filtrated in the plate-and-frame filter press, such that the water content in the sludge is reduced to below 50%.
Owner:苏州格瑞特环保科技产业发展有限公司
Application of resveratrol in preparing anti-SARS-CoV-2 (severe acute respiratory syndrome-coronavirus-2) medicine
InactiveCN111214463AImprove solubilityHigh drug loadingHydroxy compound active ingredientsAntiviralsActive agentCyclodextrin
The invention belongs to the field of medicine chemicals and in particular relates to application of resveratrol in preparing an anti-SARS-CoV-2 (severe acute respiratory syndrome-coronavirus-2) medicine. According to the application, in-vitro cell level experiments show that a prepared novel high-solubility quick-release RES (resveratrol) preparation has a certain inhibition function on SARS-CoV-2, the inhibition function is prior to that of RES which is independently used, and possibility of clinical use can be achieved. In the preparation, super-saturation formation modes are concluded intothree principles in mutual combination and mutual synergism, that is, the RES is formed at an amorphous molecular state by using a water-soluble high polymer material, a part of the RES at the molecular state is wrapped by using cyclodextrin and is distributed to the surface of the water-soluble high polymer material, and charges on the surface of a medicine-high polymer material complex are improved by using surfactants such as phospholipid and sodium cholate.
Owner:南京大渊医美生物技术有限公司
Synthetic method of ZSM-5/mordenite composite molecular sieve
ActiveCN102874839ASynthetic Method AdvantagesEasy to operateMolecular sieve catalystsMordenite aluminosilicate zeoliteSynthesis methodsMordenite
The invention discloses a synthetic method of a ZSM-5 / mordenite composite molecular sieve, comprising the following steps of: firstly carrying out alkali treatment on mordenite under an enclosed condition so as to prepare a structure-directing agent; mixing inorganic base, an aluminium source, a silicon source and water with stirring according to a certain mole ratio, adding the structure-directing agent, ZSM-5 zeolite and chloride, and crystallizing at the temperature of 160-180 DEG C for 15-45 hours so as to obtain the product. According to the method, the structure-directing agent is used to greatly raise directing efficiency of mordenite, greatly reduce the amount of mordenite and simultaneously increase crystallization degree of mordenite in the composite molecular sieve. During the synthetic process, addition of the chloride is beneficial to synthesis of the core-shell structured molecular sieve with high degree of complexation. The method provided by the invention is simple and easy to operate. Raw materials are cheap, easily available and nontoxic and harmless such that the use of expensive and toxic organic template raw materials is avoided. Therefore, production cost is reduced, and the whole preparation process is green and environmental friendly.
Owner:CHINA PETROLEUM & CHEM CORP +1
Environment-friendly chromium-free leather retanning method
ActiveCN111321260AImprove flatnessGood flexibilityTanning treatmentPre-tanning chemical treatmentCelluloseCarboxymethyl cellulose
The invention provides an environment-friendly chromium-free leather retanning method. The dyeing uniformity and strength of the leather are further improved, and the durability of the leather is improved. The retanning fullness and the filling property of the leather are improved, so that the leather with obviously higher cutting yield is obtained; a traditional retanning agent is designed into astrip-shaped microcapsule form, good filling performance is realized, the flatness of the leather is improved; in addition, the grain defects of the leather are well repaired, and the retanning agentcan be released for a long time under stress or heating through the design of the microcapsules, so that the obtained leather product is more durable; through cooperation of carboxymethyl cellulose,non-chromium metal and acrylic polymers, dyeing is brighter and more uniform, the tinting strength of the surface of the leather is improved, the color fading phenomenon is basically avoided, and theleather can be endowed with better properties such as bacterium resistance and mildew resistance according to needs. The leather process disclosed by the invention is green and environment-friendly, not only does not discharge chromium, but also reduces the use of dyes, and the microcapsule-shaped retanning agent is beneficial to recycling and has good social and economic benefits and applicationvalues.
Owner:河南中牛实业有限公司
Preparation method of high-viscosity attapulgite-based inorganic gel
ActiveCN112830497AChange the degree of dispersionChange surface chargeSilicon compoundsInorganic saltsAcid water
The invention discloses a preparation method of high-viscosity attapulgite-based inorganic gel, which comprises the steps of crushing natural attapulgite raw ore, rolling, dispersing into an acidic aqueous solution, activating, and sequentially carrying out rotational flow grading treatment and ultrasonic rod crystal beam dissociation treatment to obtain a suspension after rod crystal beam dissociation; adding inorganic salt into the suspension, and stirring to react to obtain a modified suspension; and obtaining the modified suspension through solid-liquid separation, finally, rolling a filter cake into slices, and drying the slices to obtain an inorganic gel product. According to the method, the attapulgite suspension subjected to acid activation, purification and rod crystal beam dissociation is subjected to inorganic salt modification and the like, so that the modification effect and the viscosity of the gel product are effectively improved, and the attapulgite-based mineral inorganic gel product with excellent suspension stability, viscosity and adaptability is obtained, and can be used as a tackifier and a suspension stabilizer to be applied to the fields of high-end coatings, biomedicine or daily chemicals and the like.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
Abrasion-resisting lining plate for producing aluminum oxide in ore grinding operation
ActiveCN107930781AExtended service lifeEasy to replaceGrain treatmentsRubber materialAluminium oxide
An abrasion-resisting lining plate for producing aluminum oxide in ore grinding operation comprises a steel lining plate and an abrasion-resisting rubber lining plate arranged on the inner wall face of the steel lining plate. A plurality of counter bores are distributed in the inner wall face of the steel lining plate so that when abrasion-resisting rubber materials is pressed into the abrasion-resisting rubber lining plate on the inner wall face of the abrasion-resisting rubber lining plate, part of abrasion-resisting rubber materials enter the counter bores to form connection bolt columns toachieve connection between the steel lining plate and the abrasion-resisting rubber lining plate. According to the abrasion-resisting lining plate, due to the fact that the abrasion-resisting rubberlining plate is arranged on the surface of the steel lining plate, the abrasion-resisting rubber lining plate plays a role in protecting the steel lining plate when a grinding body and ores directly impact the abrasion-resisting rubber lining plate, the abrasion-resisting rubber lining plate is easy to change after being damaged, and the service life of the steel lining plate is greatly prolonged.
Owner:平顶山京钰实业有限公司
Washing-resistant rubber lining for cyclone and preparation method thereof
InactiveCN108148230AEasy to replaceExtended service lifeReversed direction vortexPolymer scienceNano al2o3
The invention discloses a washing-resistant rubber lining for a cyclone and a preparation method thereof. The rubber lining is prepared by taking the nitrile rubber and butadiene rubber as matrix, taking polyurethane cellosilk, carbon fiber and polyamide fiber as the skeleton fiber, taking the sepiolite powder, carbon black and nano-aluminum oxide powder as filler, taking a aluminic ester couplingagent, liquid coumarone resin and modifying additive as the additive, and mixing the raw materials with anti-wearing auxiliary, a sulfurizing agent BPO and DM, wherein the anti-wearing auxiliary is prepared by mixing nitrile rubber powder, dioctyl phthalate, aluminium oxide, succinic acid and KH580; the modifying additive is prepared by mixing KH570, nanometer aluminum hydroxide, acetone and barium hydroxide. By arranging the rubber lining on the inner wall of the cyclone, thus the ore pulp directly impacts on the rubber lining, and the aim of protecting the inner wall of the cyclone is achieved; the rubber lining is easy to change after being damaged, and the service life of the cyclone is greatly prolonged.
Owner:北京中选耐磨设备有限公司平顶山分公司
Sewage treatment agent and preparation method and application thereof
PendingCN111925060AGood water solubility and stabilityLow costWater/sewage treatment by irradiationWater contaminantsEnvironmental chemistryPolyacrylamide
The invention provides a sewage treatment agent as well as a preparation method and application thereof, and relates to the technical field of sewage treatment, and the sewage treatment agent comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight: 20-40 parts of biologically modified zeolite powder and 10-23 parts of non-ionic polyacrylamide; the component B is prepared from the following raw materials in parts by weight: 8-18 parts of carbon-doped modified titanium dioxide, 5-10 parts of polyaluminum chloride, 3-8 parts of amino trimethylene phosphonic acid and 8-15 parts of silicate,. The sewage treatment agent has an excellent removal effect on dyes, organic pollutants, ammonia nitrogen, suspended solids, total phosphorus, heavy metals and the like in sewage, the treated wastewater can reach the first-grade discharge standard, and the preparation method is simple and convenient to popularize and apply.
Owner:陈叶
Simple preparation method of continuous compact mordenite membrane
ActiveCN112675713AAdd OH groupImprove bindingSemi-permeable membranesDispersed particle separationMicron scaleSilanes
The invention provides a simple preparation method of a continuous compact mordenite membrane, and mainly aims to solve the problem that a uniform, complete and high-flux membrane cannot be obtained due to poor binding force between a carrier and a seed crystal layer and thick seed crystal layer. The preparation method comprises the following steps: firstly, carrying out hydrolytic copolymerization on tetraethoxysilane and zirconium n-butoxide to prepare nano-scale SiO2-ZrO2 sol containing polyhydroxy; dispersing a micron-sized mordenite (MOR) molecular sieve into the silicon-zirconium sol to form a seed crystal solution; and finally, coating an alumina carrier tube with a seed crystal by adopting a dip-coating method, drying and roasting to obtain a complete and continuous seed crystal tube, and growing to form a film by adopting a secondary hydrothermal method. According to the invention, the problems of defects caused by poor binding force between the carrier and the seed crystal layer and membrane flux reduction caused by over-thick seed crystal layer are effectively solved.
Owner:CHANGZHOU UNIV
Krebs-type polyacid compound and preparation method thereof
PendingCN110423252AStrong penetrating powerHas antitumor activityAntineoplastic agentsGroup 7/17 organic compounds without C-metal linkagesHigh cellSurface charges
The invention discloses a Krebs-type polyacid compound and a preparation method thereof. Based on a unit {SbW9}, the Krebs-type polyacid compound Na2Mn2H6[Mn2(H2O)2(trz)2(SbO2)2(SbW9O33)2] is synthesized by self-assembly of 1,2,4-triazole and transition metal, and during the reaction, Sb(III) is partially oxidized to Sb(V). According to the invention, the structural characteristics of polyoxometallate and the biological effect of anti-tumor activity are utilized, and organic groups are introduced into a polyoxometallate (POM) framework to change the surface charge, polarity and oxidation-reduction characteristics of the POM framework, so that the functional POM with lower toxicity and higher cell penetration capacity is formed, and the prepared Krebs-type polyacid compound has an inhibition effect on tumor cells, shows high anti-tumor activity on gastric cancer cells, and can be used as an anti-tumor medicine.
Owner:YANGZHOU UNIV
Bactericidal/permeability-increasing protein: crystallization, x-ray diffraction, three-dimensional structure determination, rational drug design and molecular modeling or related proteins
InactiveUS20050209837A1Change surface chargeAltered lipid binding pocketsAnalogue computers for chemical processesBactericidal/permeability-increasing proteinLipid formationLipid Transport
The present invention solves the three-dimensional structure of BPI and thereby provides atomic coordinates of BPI from the analysis of x-ray diffraction patterns of sufficiently high resolution for three-dimensional structure determination of the protein, as well as methods for rational drug design, based on using amino acid sequence data and / or x-ray diffraction data provided on computer readable media, as analyzed on a computer system having suitable computer algorithms; and atomic coordinates are provided yielding structural information on related proteins, including the lipid binding and lipid transport protein family that includes BPI, LBP, CETP and PLTP.
Owner:BEAMER LESA +2
Preparation of resveratrol and preparation method for preparation
ActiveCN111184692AImprove stabilityChange surface chargePowder deliveryHydroxy compound active ingredientsPolymer scienceActive agent
The invention belongs to the field of pharmaceutical preparations, and particularly relates to a preparation making insoluble compound resveratrol solubilized under the action of synergetic supersaturation and a preparation method for the preparation. The preparation comprises the following components, in parts by weight, 10-25 parts of resveratrol, 65-83 parts of water-soluble high polymer materials, 6-21 parts of cyclodextrin, 0.6-3 parts of phospholipid and 0.4-1 parts of sodium cholate, wherein water-soluble high polymer materials serve as crystallization inhibitors, the cyclodextrin serves as an entrapment agent, and the phospholipid serves as a surface active agent.
Owner:南京大渊医美生物技术有限公司
Preparation of an antigen-loaded polymer lipid nanosphere and its application as a vaccine adjuvant
ActiveCN106177974BIncrease intakeProcessing and submission is goodPowder deliveryViral antigen ingredientsPeptide antigenPharmaceutical drug
The invention relates to a polymer lipid nanoparticle, a preparation method and application thereof as a vaccine adjuvant system. The polymer nanoparticle is a solid sphere composed of a macromoleclar polymer, positively charged cationic lipid is inlaid on the surface, the nanoparticle surface can adsorb protein antigen, polypeptide antigen, viral antigen and other active drugs; the polymer nanoparticle has an average particle size of less than 300nm, a dispersion coefficient, i.e. a PDI (polydispersity) value of less than 0.2, and a Zeta potential average value of greater than 20mV. The polymer nanoparticle provided by the invention has the characteristics of uniform size, high antigen carrying rate, and good maintenance of antigen activity, when the polymer nanoparticle carries an antigen and serves as a vaccine adjuvant, the intake of antigen presenting cells (APCs) to the antigen can be increased, the activation level of antigen presenting cells is improved, and the follow-up immune response level is strengthened.
Owner:王连艳
A kind of superhydrophobic fiber material and preparation method thereof
ActiveCN106567239BChange surface chargeReduce the surface energy of the materialPhysical treatmentLiquid repellent fibresFiberBiological activation
The invention provides a preparation method of a super hydrophobic fiber material. The preparation method comprises following steps: a nano material is dispersed in a dispersing agent so as to obtain a mixed solution; adhesion of the mixed solution onto a fiber material is carried out; and the fiber material with the mixed solution is subjected to vacuum activation so as to obtain the super hydrophobic fiber material, wherein the surface of the super hydrophobic fiber material is a super hydrophobic structure composed of the nano material, and the nano material and the fiber material are connected via Van der Waals' force. The invention also provides the super hydrophobic fiber material. In the preparation method, no binding agent is added, the super hydrophobic structure can be formed on the fiber material without surface treatment with fluorine-containing low surface energy materials, and connection of the super hydrophobic surface with the fiber material is firm, and falling is not easily caused.
Owner:浙江枫翎新材料科技有限公司
Preparation of nano-feo x /nio y /Methods, products and applications of mesoporous material catalysts
InactiveCN104588067BNot easy to loseGood lookingMolecular sieve catalystsWater contaminantsPtru catalystMesoporous material
Owner:ZHEJIANG UNIV
Compound type sludge dewatering conditioner and application method thereof
ActiveCN103113013BChange surface chargeEfficient dehydrationSludge treatment by de-watering/drying/thickeningChemical industryActive agent
Owner:SHENZHEN WATER GRP CO LTD
A preparation of resveratrol and its preparation method
ActiveCN111184692BImprove stabilityChange surface chargePowder deliveryHydroxy compound active ingredientsCholic acidActive agent
The invention belongs to the field of pharmaceutical preparations, and specifically relates to a preparation based on synergistic supersaturation that solubilizes the poorly soluble compound resveratrol and its preparation method. This preparation includes: resveratrol, a water-soluble polymer material as a crystallization inhibitor, cyclodextrin as a carrier, phospholipids and sodium cholate as a surfactant. The preparation includes the following components by weight: : 10 to 25 parts of resveratrol, 65 to 83 parts of water-soluble polymer materials, 6 to 21 parts of cyclodextrin, 0.6 to 3 parts of phosphorus ester, and 0.4 to 1 part of sodium cholate.
Owner:南京大渊医美生物技术有限公司
Compounded sludge dewatering conditioner and application and method thereof
ActiveCN103241922BEfficient dehydrationReduce dosageSludge treatment by de-watering/drying/thickeningChemical industryAluminate
The invention discloses a compounded sludge dewatering conditioner and application and a method thereof. The compounded sludge dewatering conditioner comprises the following components in parts by weight: 2-6 parts of ferric trichloride, 2-6 parts of magnesium chloride, 2-6 parts of calcium oxide, 1-3 parts of magnesium oxide, 1-3 parts of calcium aluminate, 2-4 parts of sodium dodecyl benzene sulfonate, 0.5-1 part of sulfuric acid and 0.5-1 part of ammonium chloride. After the sludge is dewatered by the compounded sludge dewatering conditioner, the moisture content of the sludge is reduced to be less than 45%, and the pH of the sludge is between 6-7; the sludge does not stink; less usage amount of the conditioner does not cause the problem of capacity increasing, and sludge reduction can be realized, so that the environmental benefit is good, the conditioner is beneficial to sludge resource utilization in following step, can be widely applied to sewage and sludge treatment in chemical industry, municipal administration and the like, and is very suitable for domestic sludge treatment in town sewage plants.
Owner:CISDI ENG CO LTD
A kind of multifunctional nanocomposite material and its preparation method and application
ActiveCN106310259BChange surface chargeGood T2 imaging contrastPowder deliveryEnergy modified materialsNanocompositePhotothermal therapy
Owner:SHANGHAI NORMAL UNIVERSITY
A kind of preparation method of vitamin K2
ActiveCN113403348BHigh purityTake by forceQuinone separation/purificationMicroorganism based processesVitamin K2Bacillus natto
The present invention relates to the technical field of vitamin K2, in particular to a preparation method of vitamin K2, which comprises the following steps: (1) adding a composite flocculant to the fermentation liquid of Bacillus natto, then performing solid-liquid separation, and collecting the liquid as the liquid, spare. (2) Concentrating the liquid to be extracted into a concentrate for subsequent use. (3) Freeze-drying the concentrated solution to obtain a freeze-dried powder containing crude vitamin K2 for future use. (4) Dissolving the freeze-dried powder in acetone, after the freeze-dried powder is completely dissolved, add water as a precipitant to precipitate vitamin K2, separate the precipitate and remove the acetone in the remaining liquid and reclaim it, and the remaining liquid is the mother liquor ,spare. (5) The mother liquor is combined with the concentrate prepared in the next step (3) to realize recycling of the mother liquor. The method of the present invention can not only effectively improve the purification degree of vitamin K2, but also can realize the effective utilization of mother liquor after extracting vitamin K2.
Owner:SHANDONG RUNDE BIOTECH CO LTD
Potassium permanganate mediated oxidation dyeing method
ActiveCN104294679BUniform colorReduce pollutionTanning treatmentDyeing processAnimal furPotassium dichromate
The invention relates to the field of animal fur processing and particularly relates to an oxidation dyeing method utilizing potassium permanganate as a medium. The oxidation dyeing method comprises the following steps: preprocessing raw material fur, and carrying out wool opening by virtue of a first mixing water solution containing sodium carbonate, ammonia water and a degreasing agent; washing; soaking the washed raw material fur for 20-40 minutes by virtue of a water solution containing potassium permanganate and a penetrating agent, adding lactic acid, continuously soaking, and carrying out oxidation dyeing after the soaking; washing the dyed raw material fur for eliminating a flooding phenomenon, carrying out retanning, drying, adding oil, standing, dry washing, and dry shoveling, so as to obtain finished products. According to the oxidation dyeing method, the potassium permanganate is utilized for replacing toxic potassium dichromate to serve as a medium auxiliary during the oxidation dyeing, the thicknesses and pores of obtained oxidation films are uniform, and the colors of the dyed fur are uniform; furthermore, the process is safe and reliable to operate, the environmental pollution is effectively reduced, and the obtained fur is safe and harmless to human bodies.
Owner:BEIJING FANBO CHEM
Slurry titanium dioxide and preparation method thereof
ActiveCN114106590AIncrease repulsionImprove dispersion stability and storage stabilityInorganic pigment treatmentChemistrySilicon oxide
The invention relates to the technical field of titanium dioxide, in particular to slurry titanium dioxide and a preparation method thereof. The slurry titanium dioxide comprises titanium dioxide, sodium hexametaphosphate and a dispersing agent which are sequentially coated with a first film layer and a second film layer from inside to outside; the first film layer comprises a zirconium coating layer or a silicon coating layer; the zirconium coating layer mainly comprises nano zirconium oxide and zirconium oxide; the silicon coating layer is mainly composed of nano silicon oxide and silicon oxide; the second film layer is mainly composed of nanometer aluminum oxide and aluminum oxide. The surface of titanium dioxide is coated with a specific coating layer, and particularly nano oxide is added into the coating layer, so that the number of micropores and the hydroxyl content of the surface of titanium dioxide can be increased, surface charges of titanium dioxide can be changed, and repulsive force among titanium dioxide particles and the binding degree between the particles and a dispersing agent can be enhanced; the heat treatment can reduce the isoelectric point of the inorganic coated titanium dioxide slurry and improve the dispersion stability and storage stability of the slurry titanium dioxide. And the slurry titanium dioxide can save the cost of secondary dispersion.
Owner:LOMON BILLIONS GRP CO LTD +1
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