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Biocompatibility modified starch sponges
ActiveCN101455857AFlexibleActive bleeding is easily controlledAbsorbent padsBandagesFreeze-dryingBiocompatibility Testing
The invention relates to biocompatible modified starch sponge and use of the biocompatible modified starch sponge as a hemostatic material, an anti-adhesion material, a material for promoting tissue healing, a surgical sealant or a wound tissue adhesive. Modified starch is one or a combination of more than one among pre-gelatinized starch, acid modified starch, dextrin, oxidized starch, esterified starch, etherified starch, crosslinked starch, grafted starch and composite modified starch. The sponge is prepared by vacuum freeze drying of the modified starch and other biocompatible hemostatic material, coagulant, plasticizer and so on. The biocompatible modified starch sponge has the advantages that the biocompatible modified starch sponge has flexible form and good biocompatibility, can be directly acted on bloody wound surfaces, avoids the conditions of hypersusceptibility, infection and difficult healing of wounds caused by adoption of hemostatic materials such as animal source / human source collagens, obviously improves the water absorption speed, has larger viscosity, forms a zymoplastic mixture which has good adhesion, calks broken tissues and blood vessels, and is used for hemostasis of active hemorrhage.
Owner:BEIJING UNIVERSAL LIKANG TECH CO LTD
Modified starch absorbable hemostasia material and preparation method thereof
ActiveCN101361986AHigh viscosityImprove water absorption speedSurgical adhesivesPharmaceutical delivery mechanismWound healingBiomedical engineering
Owner:BEIJING UNIVERSAL LIKANG TECH CO LTD
Epoxy resin modified water-based polyurethane emulsion and preparation method thereof
InactiveCN101717488AHigh molecular weightImprove cohesive energyPolyurea/polyurethane coatingsPolyesterWater based
The invention relates to an epoxy resin modified water-based polyurethane emulsion and a preparation method thereof. The emulsion comprises the following components in percentage by weight: 20 to 40 percent of isophorone diisocyanate, 20 to 40 percent of polyester, 5 to 10 percent of hydrophilic chain extender, 2 to 10 percent of chain extender, 1 to 3 percent of crosslinker, 3 to 10 percent of neutralizing agent, 2 to 10 percent of epoxy resin and 10 to 20 percent of acetone. The preparation method comprises the steps of feed preparation, polyester dehydration, the synthesis and neutralization of prepolymer, and chain extension and emulsification. Compared with the prior art, the epoxy resin modified water-based polyurethane emulsion has the advantages of high hardness of film, good water resistance and solvent resistance and the like, and is widely applied in the field of packaging coatings.
Owner:SHANGHAI WEIKAI CHEM
Hard polyurethane foam
The invention relates to a hard polyurethane foam. The hard polyurethane foam is composed of a component A and a component B at a weight ratio of 1:0.7-1.2. The component A comprises, by weight, 100 parts of a compound polyhydric alcohol containing phenylenediamine polyether glycol and polyester ether polyhydric alcohol, 10 to 50 parts of a physical foaming agent containing trans-1,1,1,4,4,4-hexafluoro-2-butene, 1 to 4 parts of a catalyst, 1 to 5 parts of a surfactant, and 0.5 to 3.0 parts of water; and the component B is polymethylene polyphenyl isocyanate. The foams of the hard polyurethane foam are fine and uniform; heat conductivity coefficient is low; comprehensive properties are excellent; and K value<=19.0mW / (m.K) at 24 DEG C, and K value<=17.0mW / (m.K) at 0 DEG C.
Owner:NANJING HONGBAOLI POLYURETHANE
Sludge treatment method based on hydrothermal carbonization
InactiveCN103755124AEmission reductionIncrease organic carbon contentSludge treatment by de-watering/drying/thickeningSludge treatment by thermal conditioningSludgeToxic material
The invention relates to a treatment method of sludge generated by urban sewage treatment plant and industrial sludge and discloses a sludge treatment method based on hydrothermal carbonization. The sludge treatment method comprises four steps: sludge preheating treatment, hydrothermal carbonization, waste heat recovery and dehydration desiccation. By adopting the sludge treatment method, as the sludge is converted to hydrothermal carbon by adopting a hydrothermal carbonization technology, pathogenic microorganisms in the sludge are completely killed, most heavy metal pollutants in the sludge are dissolved out, and organic toxic substances in the sludge are effectively decomposed, so that the energy recovery utilization rate is high, and the sludge treatment method is clean, environment-friendly, rapid and effective and has high product additional values.
Owner:HANGZHOU HUHUI ENVIRONMENTAL PROTECTION TECH
Boiler coal combustion-improving desulfurizing and denitrifying agent composition and preparation method thereof
The invention provides a boiler coal combustion-improving desulfurizing and denitrifying agent composition. The composition comprises the following raw materials in parts by weight: 2-7 parts of sodium carbonate, 1-3 parts of alumina, 2-8 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 2-6 parts of ferric oxide, 3-10 parts of potassium permanganate, 3-10 parts of potassium chlorate, 10-35 parts of activated attapulgite clay, 15-30 parts of urea, 2-4 parts of ammonium formate, 2-4 parts of ammonium chloride, 6-23 parts of ammonium acetate, 3-9 parts of manganese oxide, 9-12 parts of copper chloride, 1-3 parts of copper oxide, 2-4 parts of zinc sulfate, 1-3 parts of zinc nitrate, 7-18 parts of potassium dichromate, 1.0-1.5 parts of titanium dioxide, 0.5-1.0 part of barium molybdate, 0.5-1.5 parts of cobalt sulfate, 0.5-1.5 parts of vanadium pentoxide, 0.3-0.7 part of cerium oxide, 0.1-0.2 part of sodium dodecyl benzene sulfonate and 0.1-0.2 part of alkyl glyceryl ether. The composition is convenient to use, has stable properties, plays roles of combustion improving, desulfurization and denitrification, has coal saving rate of 8-25% and can remove fixed sulfur by 50-70%.
Owner:兰州熙瑞化工科技有限公司
Mono-component varnish composition, preparation method and purpose thereof
ActiveCN106916503AImprove radiation resistanceGood weather resistancePretreated surfacesPolyurea/polyurethane coatingsWeather resistanceAcrylic resin
The invention discloses a mono-component varnish composition, which comprises at least a polymer having a hyper branched or dendritical structure; at least one type of hydroxyl acrylic resin or hydroxyl methacrylate resin; at least one type of organosilicon-modified acrylic resins; at least a crosslinking curing agent; at least an acid catalyst; at least a rheological control agent; at least an auxiliary agent and at least a solvent; and the mono-component varnish composition has the advantages of high scratch resistance and high weather resistance. The provided mono-component varnish composition can effectively increase the smoothness of the surface of a varnish composition film, and increases the rub resistance of the film; in addition, the introduction of the organosilicon-modified acrylic resin can further increase the weatherability of the varnish composition film.
Owner:LANGFANG NIPPON PAINT +2
Hydrophilic active biological film suspend carrier and method for making the same
InactiveCN101284694AImprove adhesionSufficient dissolved oxygenSustainable biological treatmentBiological water/sewage treatmentActive agentCatalytic oxidation
The invention discloses a hydrophilic and active biological film suspended carrier as well as the manufacturing method thereof. The carrier substrate adopts polyethylene or polypropylene resin, and hydrophilic and polymeric surfactant, biological enzyme accelerator and microbial affinant mixing granulations are added, thereby being molded by extrusion. The carrier is characterized in that firstly, the carrier has good hydrophilicity and mass transferring property; secondly, the carrier has the characteristics of catalyzing the oxidation reaction and the reduction reaction; thirdly, the carrier has microbial affinity; fourthly, the carrier has the characteristics of large specific surface area, fast biological film cultivation speed and high load impact resistance; and fifthly, the manufacturing cost is low, and the processing technology is simple.
Owner:于春荣
Rare earth upconversion nano crystal/silver difunctional composite nano material, preparation method thereof and application thereof in cancer detection and treatment
InactiveCN101948694ANot easy to decomposeGood light stabilityEnergy modified materialsColor/spectral properties measurementsTumour tissueNear infrared laser
The invention provides a rare earth upconversion nano crystal / silver difunctional composite nano material and a preparation method thereof as well as application thereof in preparation of medicine for treating tumour. The composite nano material can inhibit the growth of tumour tissue and can be used with anti-tumour medicine, thus improving medicine effect and achieving the aim of treatment; thecomposite nano material is difficult to decompose and has good light stability; damage to human body is less, the composite nano material can be taken as heat sensitizing agent and can absorb infrared light, the near infrared region (800-1200nm) is a transmission window of organism tissue, and damage of near infrared laser to human body is far less than that of laser in other wavebands, thus reducing damage to human body, being capable of being used as photothermal conversion agent and being superior when used for diagnosis and treatment on malignant tumour.
Owner:JILIN UNIV
Novel method for recovering solvent for polymerization of poly(p-phenytene terephthalamide)
The invention relates to a novel method for recycling a solvent used for polymerizing the poly (p-phenylene terephthalamide) which has a shortened form of para-aramid or PPTA. The method comprises the following steps that: the PPTA polymer made by the low-temperature solution polycondensation contains a large amount of solution N-Methyl pyrrolidine which has a shortened form of NMP and certain amount of calcium chloride (CaCl2), the PPTA polymer is washed by deionized water for a plurality of times, the PPTA polymer is collected to enter a drying system, a scrub solution is neutralized and enters a neutralizing liquid storage tank of a solvent recycling system; the neutralizing fluid is processed by a two-stage film evaporator to remove the CaCl2 added to the polyreaction and generated by the neutralizing reaction, the hydration NMP enters the middle part of a topping still from the top of the film evaporator in a state of mixed gas to remove most of water by the distillation process, the purity quotient of NMP is improved further and the minim water inside the NMP is lowered by the rectification and purification processes, the obtained NMP has a purity quotient higher than 99.5 percent, a water content lower than 100ppm, thereby completely satisfying the requirement of PPTA polymerization. The technique is used for recycling the solvent for PPTA polymerization; the recycling rate of the NMP is higher than 96 percent, thereby lowering the cost further and providing reliable guarantee for the industrialization of the para-aramid.
Owner:SINOCHEM HIGH PERFORMANCE FIBER MATERIALS CO LTD
Biocompatibility pre-gelatinized modified starch and preparation thereof
InactiveCN101497670AAbsorbentSpeed up absorptionSurgical adhesivesFibre treatmentBiocompatibility TestingHigh pressure
The invention relates to a biocompatible pre-gelatinized modified starch. The water absorbency is not less than one time, and the biocompatible pre-gelatinized modified starch is taken as biocompatible hemostatic material, biocompatible anti-blocking material, biocompatible tissue-healing promoting material, biocompatible surgical sealant or biocompatible wound closure tissue glue. The invention has the advantages that the biocompatible pre-gelatinized modified starch is directly acted on the wounded area with blood for immediately stopping bleeding, has obviously increased water absorbency and speed of water absorption and greater viscosity and stickiness and further plays the role in preventing the tissue and the blood vessel from being damaged during the process of stopping bleeding; the modified starch is easy to swell or dissolve in water, and is washed by normal saline after the bleeding stopping so as to reduce the residual in the body, to be favorable for wound healing and to avoid the pain due to tearing the gauze and the bandage out; the pre-gelatinized modified starch has the actions of bacterial resistance and anti-inflammatory; and the pre-gelatinized modified starch is stable, not easy to decompose, long in guarantee period, convenient for storage, resistant at high pressure and low pressure, resistant at high temperature and low temperature and not easy to change the physicochemical characteristics.
Owner:纪欣
Wood-plastic composite material and preparation method thereof
The invention belongs to the field of high-molecular material modified technology, and discloses a wood-plastic composite material and a preparation method thereof. The wood-plastic composite material is prepared by the following components of, by weight, 40-75 parts of a plastic substrate, 20-50 parts of wood powder and 5-10 parts of auxiliary agents. The preparation method of the wood-plastic composite material comprises the following steps of (1) mixing 20-50 parts of the wood powder, 40-75 parts of the plastic substrate and 5-10 parts of the auxiliary agents which are treated by silanization adequately, for 10-60 min; (2) extruding and granulating the uniform mixture obtained from the step (1) by using a double screw extruder, forming by introducing the obtained materials into an injection machine or flat-panel vulcanizing machine, or forming by introducing the uniform mixture obtained from the step (1) into the flat-panel vulcanizing machine. An inorganic layer is formed on the surface of the wood powder, thereby facilitating improving the interface bonding property between the inorganic layer and the plastic matrix, increasing heat resistant temperature of the wood powder and allowing the wood powder not to be decomposed in a processing process.
Owner:SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
Process for reclaiming city domestic sludge
ActiveCN101333123ASolve processing problemsRelieve pressureBio-organic fraction processingOrganic fertiliser preparationMushroomBiology
The invention relates to the technical field of sludge resource technology, in particular to a technology which uses aerobic biological-physical-chemical jointed rapid fermentation technology to treat the urban living sludge resources; municipal sludge, mushroom dregs and green garbage are mixed based on a proper proportion; then an appropriate amount of quicklime is added to the mixture for fermentation through the aerobic biological-physical-chemical jointed technology; the fermentated product is screened and sorted to form the refined organic fertilizer. The technology can make fast treatment to three waste resources including the municipal sludge, the urban green garbage and the mushroom dregs; the technology can also adjust the material proportion of the mixture based on the nutritional characteristics of various gardens and fruit trees, as well as the resource conditions in different areas, so that the obtained organic fertilizer can achieve best effect. The organic fertilizer has full nutrients, good fertilizer efficiency, long fertilizer effect period and high utilization rate, which has the functions of improving the soil activity, resisting drought, saving water, preventing disease and improving crop yield and quality so as to eventually reduce the municipal sewage sludge and realize harmless treatment to the municipal sewage sludge resource.
Owner:DONGGUAN SHENGYIN BIO ORGANIC FERTILIZER
A method for preparing a g-C3N4/carbon quantum dot composite electrode
ActiveCN103745836AImprove performanceNot easy to decomposeHybrid/EDL manufactureCapacitanceElectron transfer
Provided is a method for preparing a g-C3N4 / carbon quantum dot composite electrode. The method comprises: adding carbon quantum dots into ethanol in order to prepare carbon quantum dot ethanol solution; mixing urea with the carbon quantum dot ethanol solution, performing ultrasonic dispersion on the mixed solution and then transferring the mixed solution to a crucible; warming the mixed solution to 350 to 700 degree centigrade with a muffle furnace step by step, maintaining the temperature for one to three hours and then decreasing the temperature of the mixed solution to room temperature; and grinding the obtained substance with ethanol and filtering the same so as to obtain g-C3N4 / carbon quantum dot composite material. The method has advantages of simpleness, no by-products, raw material easy to obtain, and low price. The obtained composite material is stable in performance, uneasy to decompose, and nontoxic. The method may increase the electron transfer rate of the g-C3N4 material, has good conductive performance, enhances electrode specific area, improves the electron adsorption capability of an electrode surface, and effectively increases the specific capacitance of a capacitor.
Owner:BOHAI UNIV
Stuffing for capacitor and preparation method thereof
ActiveCN103035405AWell mixedGood natureThin/thick film capacitorFixed capacitor housing/encapsulationVegetable oilParaffin oils
The invention relates to a stuffing for a capacitor. The stuffing for the capacitor, according to the quality percentage, comprises 20% to 40% of vegetable oil, 2% to10% of paraffin, 45% to75% of stuffing, and 0.5% to 5% of vegetable oil antioxidant additives. The preparation method of the stuffing for the capacitor includes the following procedures: the vegetable oil is heated up to 80 DEG C to 120 DEG C, is under vacuum treatment at least 8 hours, then breaking the vacuum, is added into vegetable oil antioxidant additives, and is under vacuum treatment again at least 8 hours with the temperature keeping in the range of 80 DEG C to 120 DEG C. The paraffin is heated up to 70 DEG C to 120 DEG C to melt. The stuffing for the capacitor can be obtained through mixing the vegetable oil after the heat treatment, melted paraffin and the stuffing together. The stuffing for the capacitor has electrical performance and physics and chemistry performance.
Owner:ANHUI MASCOTOP ELECTRONICS
Preparation method of 2-chloronicotinic acid
InactiveCN101117332ANot easy to decomposeLittle pollutionOrganic chemistryHalohydrocarbonPositive pressure
The invention discloses a preparation process for 2-Chloronicotinic acid. In the prior art, the disadvantage is that the overdosed catalyzer is used and has a bad effect, the oxidation yields are very low; during the chlorination reaction, POCl3 can make chloro-substitutions on a plurality of positions of nicolinamide- N- oxido, which leads to that the chloro-substitution products on 2-position have low yields. In the invention, with the existence of acetyl pyruvic molybdenum, the 3-Pyridinecarbonitrile takes water as the solvent and is dripped in 20 to 30 percent of H2O2, and then is made a heat preservation to realize a full oxidation reaction; under the anhydrous reaction and with the positive pressure protection of nitrogen, the acquired nicolinamide- N- oxido is cooled between minus 10 and 10 DEG C to be diluted by the halohydrocarbon solvent, and then is dripped in the organic base, and is reacted with the chlorination reagent under the action of phenyl dichlorophosphate; the strong alkaline solution is used to make a dehydration reaction with the acquired 2-chloro-3-cyanopyridine. The invention takes the acetyl pyruvic molybdenum as the catalyzer and oxidizer, has high oxidation yields; adopts the organic base as the acid-binding agent, makes chloro-substitutions between the chlorination reagent and the nicolinamide- N- oxido, and has above 85 percent of chloro-substitution yields.
Owner:ZHEJIANG MEDICINE CO LTD XINCHANG PHAMACEUTICAL FACTORY
Method for preparing intra-operative hemostatic material by cross emulsification of plant starch
ActiveCN102139123ANot easy to decomposeExtended shelf lifeAbsorbent padsBandagesTissue CompatibilityBiology
The invention discloses a method for preparing an intra-operative hemostatic material by cross emulsification of plant starch. The method comprises the following steps of: taking plant starch as a raw material; gelatinizing; carrying out enzymolysis; emulsifying and cross-linking; carrying out solvent extraction; washing; spray-drying; sieving; sterilizing; and packaging to obtain the hemostatic material. The hemostatic material prepared by adopting the method disclosed by the invention has excellent biological barrier properties and tissue compatibility, can directly act on a hemorrhagic wound surface, and is especially convenient for organs and tissues with complex shapes. The selected material is plant starch which has the advantages of no toxicity, no irritation, rich sources, low price, simple and feasible production processes, high water absorption speed, short hemostatic time, good using effect and wide clinical application prospect.
Owner:杜宝堂
Application of carbon dot @ inorganic oxide to preparation of anti-ultraviolet product
InactiveCN106521679AWide UV absorption rangeLow UV transmittanceCosmetic preparationsToilet preparationsFiberDecomposition
The invention discloses application of a carbon dot @ inorganic oxide to preparation of an anti-ultraviolet product. The anti-ultraviolet product may be any one selected from a group consisting of a fiber, a cosmetic, paint, printing ink, resin and rubber. The anti-ultraviolet product prepared from the carbon dot @ inorganic oxide has the advantages of no toxicity, capacity of absorbing UVA and UVB at the same time, low cost, no proneness to decomposition, good stability, etc.
Owner:SOUTH CHINA AGRI UNIV
Method for preparing iron-free aluminium sulfate and superfine active carbon white utilizing aluminium first-class ore
InactiveCN1850607AConcentration easyDo not reduce the concentrationSilicaAluminium sulfatesSurface-active agentsActive particles
The invention discloses a method for preparing iron-free aluminum sulfate and superfine active white carbon black with bauxite, crushing the bauxite and removing dissociative iron source by magnetic separation, and then reacting with vitriol; adding in dithiocarbamate with medium and high molecular weights and multiple functionalities to remove iron ions by solid phase reaction, and filtering, where the filtrate is iron-free aluminum sulfate; washing filter residue with alkaline water solution, surface active agent water solution, and tap water, respectively, to neutralize it, then after reacting with alkali, filtering, making filtrate, inorganic acid and active particles react mutually, filtering, water-washing, and drying to obtain the superfine active white carbon black. And the method has simple process, and low cost, applied to industrialized production, where the iron content of the prepared aluminum sulfate is less than 15 ppm, and the grain size, specific surface area, tensile strength, added value of the superfine white carbon black are 0.5-5 mum, greater than 200 m2 / g, higher than 17.0 MPa, and high, respectively.
Owner:杭州百事特实业股份有限公司
Method for equivalent dialysis through directly adopting membrane treatment
InactiveCN106262665AReduce energy consumptionReduce removal rateSemi-permeable membranesFood membrane processLiquid wasteLiquid storage tank
The invention discloses a method for equivalent dialysis through directly adopting membrane treatment. The method comprises the following steps: S1: storing the filtrate of Acesulfame in a filtrate storage tank, which is taken as a stock solution; S2: adopting a hot water circulation system to increase the temperature of the stock solution in the filtrate storage tank, setting membrane ingress pressure and membrane egress pressure simultaneously, and through transmission and concentration of an organic membrane, allowing a clear membrane liquid to flow to a clear membrane liquid storage tank for recycle; S3: when the clear membrane liquid flux in the clear membrane liquid storage tank drops to 20-60L / PM, using the same amount of water to dialyze, and dialyzing the Acesulfame out and recycling; S4: discharging the residual liquid in a circulation tank to a liquid waste disposing center directly so as to have liquid waste disposal; and S5: washing and detecting membrane equipment. The method disclosed by the invention adopts the hot water circulation system for heating and omits the concentration treating and recycling process, so that the energy consumption is saved, the concentration temperature is low, the material is difficult to break down, the purposes of liquid decoloration and organic salt treatment are realized, the product obtained can be recycled directly, and the equipment has a simple structure and a low treatment cost.
Owner:ANHUI WEIDUO FOOD INGREDIENTS CO LTD
Lithium ion battery and electrolyte thereof
ActiveCN102738511AReduce thickness swellImprove stabilitySecondary cellsHigh temperature storageReductive decomposition
The invention, belonging to the technical field of lithium ion battery, particularly relates to a lithium ion battery electrolyte capable of improving the high temperature storage performance of a lithium ion battery, comprising a non-aqueous solvent, lithium salts dissolved in the non-aqueous solvent, and an additive which is a compound of formula (I), wherein R1, R2, and R3 are selected from hydrogen atom, alkyl containing 1-12 carbon atoms, cycloalkyl containing 3-8 carbon atoms, and aryl containing 6-12 carbon atoms, and n is an integer in the range of 0-7. The compound can effectively passivate the anode and cathode surfaces, prevent oxygenolysis of the electrolyte ingredients on the anode surface and prevent reductive decomposition on the cathode surface, thus gas generation of the battery is reduced, and the high temperature storage performance of the lithium ion battery is raised. In addition, the invention further discloses a lithium ion battery containing the electrolyte.
Owner:NINGDE AMPEREX TECH
Organic composite efficient sulfur removal agent for oil-gas field and preparation method and application of organic composite efficient sulfur removal agent
ActiveCN106479468AEfficient removalReduce contentGaseous fuelsDrilling compositionDecompositionGlycerol
The invention discloses an organic composite efficient sulfur removal agent for oil-gas field and preparation method and application of the organic composite efficient sulfur removal agent. The sulfur removal agent is characterized in that water serves a solvent and comprises an alcohol amine component A, an alcohol amine component B, a triazine derivative, inhibiter, synergist and low-molecular mass alcohols; the alcohol amine component A refers to methyldiethanolamine, the alcohol amine component B refers to one of triethanolamine and diethanolamine or a mixture of triethanolamine and diethanolamine; triazine derivative refers to hexahydro-1,3,5-tris-s-triazine; the inhibiter refers to seventeen alkenyl amide ethyl imidazoline; the synergist refers to sulfolane; the low-molecular mass alcohols refer to one of ethylene glycol and glycerol or a mixture of ethylene glycol and glycerol. The sulfur removal agent has the advantages of good selectivity on sulfuretted hydrogen, small dosage, quick effect, high sulfur removal efficiency, no corrosion of steel, stable product performance, difficulty in heating decomposition, capability of being biodegradable and the like; sulfide like sulfuretted hydrogen existing in extraction of an oil-gas well can be effectively removed or reduced to safety threshold value range in content, corrosion of sulfide on pipelines and equipment is inhibited, and safety on the equipment and operation personnel is guaranteed.
Owner:陕西森瑞石油技术开发有限公司
Preparation method of in-situ quaternized antibacterial agent on surface of carbon nano tube
ActiveCN106118198AImprove antibacterial propertiesHigh densityAntifouling/underwater paintsPaints with biocidesEscherichia coliFiber
The invention discloses a preparation method of an in-situ quaternized antibacterial agent on the surface of a carbon nano tube. The preparation method comprises the following steps: taking an acidulated carbon nano tube as a carrier, firstly grafting polyethylenimine to the surface of the carrier, and sequentially carrying out a tertiary amination reaction and a quaternization reaction on the grafted polyethylenimine so as to form an in-situ quaternized quaternary ammonium salt long-acting antibacterial agent of the carbon nano tube. The preparation method disclosed by the invention is simple and safe and is more environment-friendly, a synthetic method of the antibacterial agent is simple, less devices are used, the antibacterial effect is excellent, the using safety is high, a wide application value is obtained, and the agent can be applied to base materials such as coating, plastics, rubber, fiber and the like and material preparation and device system for water treatment, air purification and the like. The minimum antibacterial dosages of a target product of the invention on staphylococcus aureus and typical bacteria of Escherichia coli are respectively as low as 50 mg / L and 20 mg / L.
Owner:SOUTHWEST JIAOTONG UNIV
Electrolyte for 4.5 V lithium ion battery
InactiveCN103441303AImprove high-pressure cycle performanceImprove cycle performanceSecondary cellsElectrolytic agentAcrylonitrile
The invention relates to an electrolyte for a 4.5 V lithium ion battery. The electrolyte comprises the following components in percentage by weight: 80%-89% of organic solvents, 10%-15% of lithium salt and 0.1%-5.0% of additives, wherein the additives are nitrile compounds, and the nitrile compounds include one of butanedinitrile, adiponitrile, sebaconitrile, acrylonitrile, cyclohexyl nitrile, 1,2-cyclohexyl dinitrile, phthalonitrile and cyanopyridine. According to the invention, the additives effectively improve the high-pressure cycle property of the lithium ion battery, can enhance the voltage of a common electrolyte to 4.5 V and are obvious in effect. The electrolyte disclosed by the invention is difficult to decompose under high voltage of 4.5 V, obviously enhances the cycle property of the lithium ion battery, and less influences the battery capacity.
Owner:嘉德力电源科技(苏州)有限公司
Astragaloside injection preparation and its preparing process
InactiveCN1543976AClear contentQuality is easy to controlOrganic active ingredientsPharmaceutical delivery mechanismAstragalosideFluid infusion
The invention discloses an astragaloside IV injection preparation (small injection, powder injection, glucose fluid infusion and sodium chloride fluid infusion), and the process for its preparation, wherein the auxiliary solvent and solvent assisting deflocculating agent are screened, which has proved that propylene glycol, ethanol, glycerin, polyethylene glycol, benzyl benzoate and acetic acid dimethylamide has solubilization function for astragaloside IV.
Owner:上海博泰医药科技有限公司
Preparation method of binary polymer molecule brush heavy metal chelating agent
ActiveCN106430499ASolve poor precipitation effectSolve the incomplete precipitation defectWater contaminantsWater/sewage treatment by flocculation/precipitationCoordination sitePolysulfide
The invention relates to a preparation method of binary polymer molecule brush heavy metal chelating agent. The preparation method is characterized by comprising steps of dissolving 5-10 parts by weight of binary polymer molecule brush in 10-50 parts of water; stirring for 1-10 hours under 20-30 DEG C, and obtaining micellar solution of nanometer heavy metal chelating agent. The invention solves the defects that the settling effect of heavy metal ion is bad and the settlement is completed by micromolecule polysulfide; every molecular chain can provide hundreds and even thousands of coordination sites to match and crosslink with heavy metal ions, and thereby obtaining micron order to millimeter aggregation, and effectively settling and separating from water body. The generated aggregation is good in stability, not easy to decompose and generate the secondary pollution.
Owner:西安领伯环保科技有限公司
Method for recovering metal materials in waste ternary power batteries
ActiveCN108193050AImprove reducibilityReduce corrosionPhotography auxillary processesWaste accumulators reclaimingPurification methodsPhosphoric acid
The invention relates to a method for recovering metal materials in waste ternary power batteries, and belongs to the technical field of battery material recovery and cyclic utilization. The method comprises the steps that positive and negative electrode mixed powder, phosphoric acid solution and the like react with each other, filtering is conducted to obtain a first solution; a potassium permanganate solution is added into the first solution for recovering manganese dioxide, a second solution is obtained, a butanone oxime solution is added into the second solution, butanone oxime nickel precipitation and a third solution are obtained, butanone oxime nickel is dissolved in hydrochloric acid, separating is conducted to obtain a fourth solution, and the fourth solution is subjected to electrodeposition to recover metal nickel; then mixed extractant is used for extracting cobalt ions in the third solution, separating is conducted to obtain an organic phase and a fifth solution, cobalt inthe organic phase is extracted by using sulfuric acid, a sixth solution is obtained, and the sixth solution is subjected to electrodeposition to recover metal cobalt; and a sodium carbonate solutionis added to the fifth solution, and lithium carbonate is recovered. The method for recovering the metal materials in the waste ternary power batteries adopts a mild and stable phosphoric acid-sodium bisulfite system; the multiple purification methods of precipitation, extraction and electrodeposition are used without interference to each other, and the separation effect is good; and the recoveredproducts have many types, and application is wide.
Owner:中国人民解放军陆军防化学院
High-temperature-resistant organic-solvent-resistant separating membrane material, separating membrane, and preparation method thereof
ActiveCN107551825AImprove corrosion resistanceImprove temperature resistanceSemi-permeable membranesPolymer scienceOrganic solvent
The invention relates to a high-temperature-resistant organic-solvent-resistant separating membrane material, a separating membrane, and a preparation method thereof, and belongs to the field of highmolecular material. The high-temperature-resistant organic-solvent-resistant separating membrane material is composed of, by weight, 20 to 40 parts of a high-temperature-resistant aromatic ring matrixcontaining resin, 20 to 40 parts of a carboxyl-containing polymer, 0 to 60 parts of a matrix reinforcing material, 0.1 to 10 parts of a water soluble pore forming agent, and 100 to 300 parts of a solvent. The high-temperature-resistant organic-solvent-resistant separating membrane prepared from the high-temperature-resistant organic-solvent-resistant separating membrane material possesses excellent corrosion resistance, heat resistance, mechanical properties, pollution resistance, and high separating efficiency, is a high performance separating membrane, and is promising in application prospect.
Owner:安徽旭云商务咨询有限公司
Foaming agent for shield
The invention discloses a foaming agent for a shield. The foaming agent contains the components in percentage by weight: 1.0-10.0% of alpha-olefin sulfonate (AOS), 1.0-8.0% of sodium fatty alcohol -polyoxyethyleneether sulfate (AES), 1.0-6.0% of ammonium lauryl sulfate (K12 ammonium), 1.0-6.0% of cocoanut fatty acid diethanolamide (6501), 1.0-5.0% of dodecyl dimethyl betaine (BS-12), 0.005-0.1% of fluorocarbon surfactant (FS), 0.2-5.0% of sodium nitrilo triacetate (A92R), 0.2-5.0% of ethylene diamine tetraacetic acid disodium salt (EDTA) and the balance of water. The foaming agent for the shield provided by the invention realizes high multiple foaming rate, long foam stabilizing time, nontoxicity and innocuity and is an environment friendly biodegradable product which does not contain phosphorus.
Owner:GUANGZHOU TAISHENG BIOTECH
Method for preparing soluble kelp cellulose
ActiveCN102787519AEnzymolysis temperature is lowMild conditions for enzymatic hydrolysisPaper material treatmentFood preparationDietary fiberCellulase
The invention discloses a method for preparing soluble kelp cellulose. The method includes the steps: firstly, preparing kelp dietary fibers from kelp residues by means of flocculation, decalcifying, bleaching, washing and the like; secondly, performing steam explosion to obtain insoluble kelp cellulose, then adding low-temperature cellulase into the insoluble kelp cellulose, and performing enzymolysis in water bath at the temperature of 25 DEG C-35 DEG C to obtain the soluble kelp cellulose with the content of 90.14+ / -1.09wt% and the yield of 50-60%. When the soluble kelp cellulose is prepared, the low-temperature cellulase is used, enzymolysis is performed at the normal temperature, enzymolysis conditions are moderate, only macromolecules are sensitive to the cellulose, and macromolecules in kelp are easily decomposed while micromolecules are relatively stable and not easily further decomposed, so that the obtained soluble kelp cellulose is uniform in molecular weight and high in yield, cellulose content, water-holding capacity and expansibility. Moreover, the enzymolysis temperature is low, so that production energy consumption and operability are reduced.
Owner:QINGDAO HENGSHENG BIOLOGICAL PHARMA TECH DEV
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