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Electric flocculation method and device for recovering and processing desulfurized wastewater
ActiveCN101817575AEliminate passivationImprove electrolysis current efficiencyWater/sewage treatmentWaste water treatment from gaseous effluentsPollutantDewatered sludge
The invention discloses electric flocculation method and device for recovering and processing desulfurized wastewater. The electric flocculation method for recovering and processing desulfurized wastewater comprises the following steps of: collecting desulfurized wastewater to enter an electric flocculation reactor, then, carrying out solid-liquid separation, recovering the separated clear effluent water in a clinker-flushing system of an electric power plant or directly discharging the separated clear effluent water, conveying the sludge to dewater in a mud-processing system, and returning the effluent water of the mud-processing system to a water intake system. Compared with the prior art, the electric flocculation technology is adopted to substitute a complicated chemical method for recovering and processing the desulfurized wastewater, can effectively remove pollutants in the wastewater, reaches a heavy metal processing rate up to 95-99 percent, a chlorine-processing rate over 80 percent and removal rates of ammonian, and the like over 90 percent, greatly shortens the processing time, improves the processing efficiency and saves the investment cost. Moreover, the electric flocculation processing device has small size, extremely small floor occupation, good environmental-protection performance and low cost without additional flocculating agents.
Owner:华电水务工程有限公司
DNA extraction method for polysaccharide-rich plant dried leaves
The present invention discloses a DNA extraction method for polysaccharide plant dried leaves. The DNA extraction method comprises dried leaf grinding, desaccharifying, cracking, extraction, precipitation, washing, detection and other steps, wherein desaccharifying is the key step, a pre-heated desaccharifying buffer solution is added before the nuclear membrane is not cracked and the genome DNA is not released, the leaf tissue solution is suspended under a 65 DEG C water bath condition so as to dissolve polysaccharides and other secondary metabolites in the buffer solution, and low speed centrifugation is adopted to remove the polysaccharides and other impurities, such that the final DNA obtained through precipitation has high concentration and high purity. The DNA extraction method is suitable for dried mature leaves of all cerasus plants and other polysaccharide-rich plants, wherein the concentration of the obtained DNA can be increased if the leaves are the young and tender leaves, and the more DNA with high quality can be obtained from the mature leaves.
Owner:SICHUAN AGRI UNIV
Bovine bone marrow peptide extraction method
InactiveCN105886583ASolve AbsorbencySolve the use problemPeptide preparation methodsFermentationSide effectNutrients substances
The invention relates to a bovine bone marrow peptide extraction method, which comprises steps of cleaning and breaking, digesting, discharging soup, hydrolyzing, filtering, concentrating and spray-drying. With the application of the extraction method disclosed by the invention, problems on the effective absorption and utilization of macromolecular protein in human body are effectively solved, and micromolecular transformation and extraction of the protein are achieved. Bovine bone marrow peptide, as a micromolecular peptide substance extracted from bovine bone marrow through biological enzymolysis, is extra-strong in activity of an essence ingredient, and the essence ingredient is quite easy for human absorption, so that human immunity can be comprehensively regulated. The bovine bone marrow peptide disclosed by the invention, as a quite clear nutrient substance, is free from chemical ingredients and hormones and is free from toxic and side effects to human body; the bovine bone marrow peptide can rapidly dissolve in water without stirring; a water solution of the bovine bone marrow peptide is represented as a clear and transparent liquid in white or light yellow, and the water solution is free from the precipitation of impurities or precipitates; and the bovine bone marrow peptide plays an important role in such physiological activities as human's growth, development, metabolism, reproduction and the like.
Owner:GUOTAI BIOLOGICAL TECH BEIJING CO LTD
Reaction type flame retardant for soft polyurethane foam and application
The invention discloses a reaction type flame retardant for soft polyurethane foam and an application, belonging to the technical field of the flame retardants. The reaction type flame retardant contains three components, namely a phosphorus-containing polyhydroxy compound, a halogen-containing polylol and a chain extender with two degrees of functionality. When the flame retardant is in use, the reaction type flame retardant can be directly added into polyether polylol and is good in compatibility with the polyether polylol, and the precipitation can be avoided. The polyurethane foam prepared by the reaction type flame retardant is lasting in flame retarding effect and further has the characteristics of low VOC (volatile organic compounds) and low atomization, the flame retarding effect can not be reduced after aging, and adverse impacts on physical properties of the foam can be avoided. The soft foam using the flame retardant has excellent flame laminating performance and great peeling strength, and is suitable for being used as an interior trimming material for automobiles and airplanes.
Owner:北京万博汇佳科贸有限公司
Fasudil hydrochloride pharmaceutical composition for injection
InactiveCN102266343AFix stability issuesHigh yieldOrganic active ingredientsPharmaceutical delivery mechanismPharmaceutical drugMedicinal chemistry
The invention discloses a pharmaceutical composition of fasudil hydrochloride for injection. The fasudil hydrochloride injection is composed of fasudil hydrochloride, cysteine hydrochloride and sodium chloride, each containing hydrochloric acid method Sudil 15-60mg, cysteine hydrochloride mg, sodium chloride mg. The preparation method is as follows: take 90% of the prescribed amount of water for injection, at a temperature of 55-65°C, add the prescribed amount of cysteine hydrochloride, stir to dissolve; add the prescribed amount of fasudil hydrochloride, stir until dissolved, and pour into Then add the sodium chloride of recipe quantity in the solution, stir until dissolving completely; Measure initial pH value, according to initial pH value, adjust pH value range with 4% sodium hydroxide solution and 10% cysteine hydrochloride solution in 5.5- 6.5; add medicinal charcoal to the mixture, stir; suction filter, add water for injection to the full amount, mix evenly; fine filter; fill; sterilize; The pharmaceutical composition of fasudil hydrochloride has good light stability, no crystallization and clarity, and good stability. The invention has the advantages of improving product yield, reducing cost, realizing industrialization, and better clinical application. more obvious advantages.
Owner:TIANJIN HANKANG PHARMA BIOTECH
Compound bifonazole nano-emulsion spray preparation and preparation method thereof
InactiveCN102526070AIncrease fat solubilityReduce onset timeAntibacterial agentsAntimycoticsFungicideActive agent
The invention discloses a compound bifonazole nano-emulsion spray preparation. The nano-emulsion spray preparation has the grain size of 1 nm to 100 nm and is formed by the following raw materials in mass percent: 30%-40% of surfactant, 3%-14% of cosurfactant, 5%-10% of oil phase, 0.8%-2% of bifonazole, 0.02%-0.1% of clobetasol propionate, 0.01%-0.2% of cinnamyl aldehyde and the balance of deionized water, wherein the sum of the mass percents of the raw materials is 100%. The compound bifonazole nano-emulsion spray preparation has multiple actions, such as fungicide, bactericide, anti-bacterial, anti-fungal, antiinflammation, itching relieving and the like, treats superficial skin fungous infection, fungous paronychia and candidal vulvovaginitis, and is also effective to external otitis and bacterial skin infection. The compound bifonazole nano-emulsion spray preparation prepared by a preparation method of the compound bifonazole nano-emulsion spray preparation has the advantages that: the activity of the three drugs is remarkably improved, the effect of sterilization and itching relieving is rapid, the recurrence is difficult, and the preparation method is simple, so that the compound bifonazole nano-emulsion spray preparation and the preparation method thereof have broad market prospects in the medicine field.
Owner:NORTHWEST A & F UNIV
Flushing device for mechanical seal of centrifugal pump
ActiveCN106122108AFlow is stable and cleanPrevents deposition of particulate impuritiesPump componentsPumpsCentrifugal pumpOrifice plate
The invention discloses a flushing device for a mechanical seal of a centrifugal pump, and belongs to the technical field of centrifugal pumps. The flushing device comprises a flushing pipe connected to the centrifugal pump; the liquid feeding end of the flushing pipe is connected with the outlet end of the centrifugal pump; the liquid discharging end of the flushing pipe is connected with the mechanical seal of the centrifugal pump; the flushing device is characterized in that the flushing pipe is connected with a tubular filter, a pressure gauge and a throttling orifice plate; the tubular filter is close to the outlet end of the centrifugal pump; the throttling orifice plate is close to the mechanical seal of the centrifugal pump; a first stop valve and a second stop valve are arranged on the flushing pipe; the first stop valve is positioned between the outlet end of the centrifugal pump and the tubular filter; and the second stop valve is positioned between the pressure gauge and the throttling orifice plate. The flushing device can both achieve a good cooling effect on the mechanical seal and prevent particle impurities from being deposited on the sealing surfaces of movable and fixed rings, thus effectively protecting the sealing surfaces of the movable and fixed rings, relieving wear and enhancing the sealing effect; and therefore, normal and stable operation of the centrifugal pump is guaranteed.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method and application of repair material for heavy metal cadmium polluted soil
ActiveCN105670643ASolubility product is smallWill not precipitateAgriculture tools and machinesContaminated soil reclamationCelluloseSolubility
The invention discloses a preparation method and application of a repair material for heavy metal cadmium polluted soil. The preparation method of the repair material comprises the following steps: (1) dissolving cellulose ether into water, and carrying out deoxidizing, so as to obtain a cellulose ether solution; (2) adding charcoal particles in absence of oxygen, and uniformly stirring; (3) adding a ferrous salt solution in absence of oxygen, and uniformly stirring; and (4) dropwise adding a sodium phosphate solution while stirring in absence of oxygen, and adequately stirring after the dropwise adding, so as to obtain cellulose ether stabilized supported nano-ferrous phosphate suspension liquid, namely the repair material for the heavy metal cadmium polluted soil. The repair material can be applied to the in-situ repair of the heavy metal cadmium polluted soil, is very small in solubility product, can be prepared for use in site and is convenient to implement, the secondary pollution is avoided, the preparation method is simple, the cost is low, the nutrients and moisture in soil are beneficially maintained, and the yield of crops is beneficially increased.
Owner:师大清远环境修复科技有限公司
Modification method of phosphogypsum for PVC material production
InactiveCN105482503AImprove processing rheologyHigh strengthPigment treatment with non-polymer organic compoundsFilling materialsParaffin oils
The invention relates to the technical field of PVC production filling materials and especially relates to a modification method of phosphogypsum for PVC material production. The method comprises mixing fresh phosphogypsum and quicklime until pH is in a range of 6-8 so that phosphogypsum free water content is reduced, carrying out heating treatment through a stirring heater, controlling the temperature in a range of 150-180 DEG C so that the fresh phosphogypsum is transformed into semi-hydrated phosphogypsum, adding paraffin into the semi-hydrated phosphogypsum so that phosphogypsum plasticity and rheological properties are improved and the dry phosphogypsum adsorbs water to form crystal water with an unstable structure, carrying out dry grinding and screening so that crystal water in the phosphogypsum is exposed, related content of phosphogypsum impurities in unit volume is reduced and phosphogypsum whiteness is improved, and carrying out stir-frying at a temperature of 180-200 DEG C so that a part of crystal water in phosphogypsum is lost. The prepared phosphogypsum is a mixture of semi-hydrated gypsum, III-type anhydrite and II-type anhydrite, has high rheological properties and plasticity and improves PVC quality.
Owner:GUIZHOU KAILIN GRP CO LTD
Oyster peptide extraction method
The invention relates to an oyster peptide extraction method which comprises the following steps: washing, boiling, removing decoction, hydrolyzing, filtering, concentrating and performing spray drying. By adopting the oyster peptide extraction method, the problem of effectively absorbing and utilizing macromolecular protein by human bodies is effectively solved, and macromolecular protein can be converted into micromolecular protein and extracted. The oyster peptide provided by the invention is prepared by extracting animal protein in a pure natural biological enzymolysis manner, is free of chemical component or hormone, free of toxic or side effect on human bodies, and is a very pure nutrient substance. The oyster peptide can be rapidly dissolved in water without stirring, the decoction can be clear and transparent and is a white or light yellow transparent liquid, and no impurity or precipitate is separated out. The oyster peptide has a remarkable effect on improving the male sexual function.
Owner:张恒
High-temperature resistant Ag-Cu-O metal sealing material and use method thereof
InactiveCN102248322AGuaranteed reliabilityGuaranteed chemical inertnessWelding/cutting media/materialsSoldering mediaElectrical conductorAlloy
The invention relates to a preparation and use method of a high-temperature resistant Ag-Cu-O metal sealing material for solid mixing conductor oxygen permeation membrane ceramic and support body stainless steel thereof. The sealing material takes Ag as a matrix; the content of Ag is 90.5-98.3 percent by weight; the contents of Cu and O are respectively controlled within 1.5-8.5 percent by weight and 0.2-1.1 percent by weight; the sealing temperature is 970-990 DEG C; and brazing sealing is carried out in an inert atmosphere (pure Ar or pure N2). The high-temperature resistant Ag-Cu-O metal sealing material disclosed by the invention is prepared by feeding the Ag-Cu alloy prepared in advance into an oxygen atmosphere furnace, controlling the weight increment to be 0.2-1.1 percent by weight and maintaining the temperature of 850 DEG C for 30h. The high-temperature resistant Ag-Cu-O metal sealing material obtained in the invention has high sealing property for the solid mixing conductor oxygen permeation membrane ceramic and the support body stainless steel thereof, has favorable chemical stability and belongs to the technical field of special ceramic welding materials.
Owner:SHANGHAI UNIV
Catalytic composite anti-bacterial fiber and preparation method and application thereof
ActiveCN109797450AImprove liquidityImprove surface activityFilament/thread formingMonocomponent polyesters artificial filamentPolyesterFiber
The invention provides a preparation method for a catalytic composite anti-bacterial fiber, and belongs to the field of fiber materials. The catalytic composite anti-bacterial fiber is prepared by performing profiled spinning treatment on a functional master batch and a polymer matrix. The functional master batch comprises a composite anti-bacterial catalyst, an additive and a high polymer. The composite anti-bacterial catalyst comprises nano metal particles and a photocatalyst. The high polymer and the polymer matrix independently comprise polyester or polyamide. The catalytic composite anti-bacterial fiber is capable of selecting the nano metal particles and the photocatalyst as the composite anti-bacterial catalyst, so the catalytic composite anti-bacterial fiber has the better anti-bacterial effect compared with the anti-bacterial fiber with a single anti-bacterial catalyst, and through using the additive, flowability and surface activity of the anti-bacterial catalyst are increased, so the anti-bacterial catalyst is uniformly distributed in the polymer matrix, and the composite anti-bacterial catalyst is prevented from being aggregated while mixed.
Owner:ZHEJIANG SCI-TECH UNIV
High temperature-resistant and high-insulation sealing glass and preparation method thereof
The invention discloses a preparation method of a high temperature-resistant and high-insulation sealing glass. The preparation method has the advantages that silicon dioxide is used as a skeleton structure; by adding BaO (barium oxide) as a generating body of glass, the melting temperature of the glass is lowered, the heat expansion coefficient of the glass is adjusted, and the fluidity of the glass is improved; by adding Al2O3 (aluminum oxide), an AlPO4 (aluminium phosphate) unit can be formed in the glass, and a straight chain is changed into a network structure, so that the structure of the glass is stable, and the chemical stability is improved; by adding ZrO2 (zirconium dioxide), the chemical stability of the glass is favorably improved; by replacing one part of BaO by other divalent metal oxides, such as CaO (calcium oxide), the melting temperature of the glass is lowered, the expansion coefficient of the glass is adjusted, and the chemical stability of the glass is improved; by adding TiO2 (titanium dioxide), the glass has high and low dielectric constants, and the electric insulation property of the glass is improved; by adding As2O5 (diarsenic pentoxide) into the formation of the glass structure, the separating from the network skeleton of the glass is avoided; the sealing temperature of the sealing glass is 1000 to 1050 DEG C, and the heat expansion coefficient is 70 to 100*10<-7> / DEG C; after sealing, the high temperature and high pressure resistant properties are good, and the insulation property is excellent.
Owner:XIAN SEAL ELECTRONICS MATERIAL TECH CO LTD
Alkyl ketene dimer sizing agent as well as preparation method and application thereof
InactiveCN111749046AReduce pollutionBiodegradableCoatings with pigmentsWater-repelling agents additionMagnesium aluminum hydroxidePolymer science
The invention belongs to the technical field of papermaking, and particularly relates to an alkyl ketene dimer sizing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a cellulose nanocrystalline dispersion liquid, magnesium aluminum hydroxide and an alkyl ketene dimer, and carrying out first emulsification to obtain an emulsion; and adding nano cellulose fibers into the emulsion, and carrying out second emulsification to obtain the alkyl ketene dimer sizing agent. The alkyl ketene dimer sizing agent emulsion prepared bythe invention has excellent surface sizing performance and alkyl ketene dimer hydrolysis resistance, and can still keep good paper surface sizing performance after being placed for 6 months (the emulsion sizing degree can reach 756 seconds after being placed for 180 days); the alkyl ketene dimer sizing agent has ultrahigh stability and cannot be demulsified, flocculated, precipitated or separatedout of a phase within 3-6 months, and the storage period of the alkyl ketene dimer sizing agent is obviously prolonged.
Owner:QILU UNIV OF TECH
Methyl methacrylate-styrene copolymer containing fluoro-acrylate and preparation method thereof
The invention relates to a methyl methacrylate-styrene copolymer containing fluoro-acrylate and a preparation method thereof. The copolymer is prepared from the following compositions in percentage by mass: 1 percent of monomers, 0.025 to 0.09 percent of sodium dodecylsulfate, 0.025 to 0.09 percent of polyoxyethylene nonyl phenyl ether, 0.09 to 0.15 percent of tetrafluoropropanol, 0.045 to 0.075 percent of normal butanol, 4.0 to 7.5 percent of water and 0.005 to 0.02 percent of initiator. The copolymer solves the problems of expensive fluorine materials and poor compatibility when fluorine-containing materials are used for improving the hydrophobicity of epoxy resin, and provides the method for synthesizing the copolymer containing the fluoro-acrylate. The method is simple and pollution-free, has low cost, and is a good method for preparing the copolymer containing the fluoro-acrylate.
Owner:HEBEI UNIV OF TECH
Solid strip water colorful paint as well as preparation and coating method thereof
The invention provides a solid state strip-type waterborne multicolor coating and a preparation method and coating method thereof; the coating mainly comprises cellulose, polyvinyl alcohol, white latex, titanium dioxide, talcum powder, lithopone powder, glycerol, ethylene glycol, calcium carbonate, sodium hexametaphosphate and pure water, etc.; after formulating, granulating, packaging and other procedures, the coating is prepared and coated through base processing, putty scraping, bottom coating brushing, medium coating brushing and multicolor coating surface spraying. The invention is rich in color, and convenient in operation, with strong stereoscopic decorative effect achieved by one step spraying.
Owner:唐小菊
Dispersible oil suspension agent for low-melting-point compound and preparation method thereof
InactiveCN104012526ASimple production processReduce manufacturing costBiocideAnimal repellantsSolventChemistry
The invention discloses a dispersible oil suspension agent for a low-melting-point compound and a preparation method thereof. The dispersible oil suspension agent is characterized by being composed of following substances in percentage by mass: 5%-25% of the low-melting-point compound, 10%-20% of an emulsifying agent, 2%-5% of a dispersant, 2%-5% of a thixotropic agent and residual amount of a solvent, wherein the low-melting-point compound is a compound with the smelting point of 25-70 DEG C. The product disclosed by the invention has good stability; a layering and precipitation phenomenon does not occur; solids are not separated out or the product is not frozen at a low temperature and the mobility is good; meanwhile, the energy consumption is low, the production efficiency is high and the physicochemical properties of the product are stable, so that the dispersible oil suspension agent is possibly prepared from a lot of the low-melting-point compounds.
Owner:ZHEJIANG TIANFENG BIOLOGICAL SCI
Synergist used in 5% avermectin emulsion in water
The invention relates to a synergist used in 5% high-content avermectin emulsion in water. The synergist is a mixture of palm oil methyl methyloctanoate and palm oil methyl methyldecanoate, wherein the content of palm oil methyl methyloctanoate is 50-58% by weight and the content of palm oil methyl methyldecanoate is 42-50%. The synergist helps to keep the stability of the avermectin emulsion in water and enables the avermectin emulsion in water to give full play to effect. According to the 5% avermectin emulsion in water prepared by using the synergist, the palm oil C8-C10 methyl esters have extremely good synergy effect and help to improve the stability of the 5% high-content avermectin emulsion in water; and no avermectin is precipitated when the 5% high-content avermectin emulsion in water returns to form at normal temperature after subjected to cold storage at 0 DEG C or refrigerated at a low temperature. The synergist helps to greatly improve the control effect on insects after the synergist-containing 5% high-content avermectin emulsion in water is applied according to a conventional application method.
Owner:天津市华宇农药有限公司
Preparation method for permanently-antistatic ionic-liquid high polymer master batch and application of permanently-antistatic ionic-liquid high polymer master batch in high-molecular materials
The invention provides a preparation method for a permanently-antistatic ionic-liquid high polymer master batch. The preparation method comprises the following steps: 1) adding high polymer monomer A, acid anhydride B and initiator C into a reaction vessel, introducing nitrogen for protection and carrying out a reaction at 65 to 250 DEG C for 3 to 8 h so as to obtain a segmented copolymer D; 2) adding 10 to 65 parts by weight of ionic liquid into 100 parts by weight of the segmented copolymer D, introducing nitrogen for protection and carrying out stirring at 65 to 250 DEG C for 1 to 5 h so as to obtain a segmented copolymer E; and 3) adding 70 to 99 parts by weight of the segmented copolymer E grafted by ionic liquid, 0.05 to 0.2 part by weight of anti-oxidant, 1 to 3 parts by weight of hydroxy silicone oil, 0 to 50 parts by weight of a filling material, 3 to 10 parts by weight of heat stabilizer and 3 to 5 parts by weight of silicone oligomer into an internal mixer, carrying out heating and uniform mixing under stirring and then carrying out extrusion and granulation so as to obtain the permanently-antistatic ionic-liquid high polymer master batch. The invention further provides application of the high polymer master batch in high-molecular materials. The permanently-antistatic ionic-liquid high polymer master batch has permanent antistatic performance and good compatibility with high polymer.
Owner:ZHEJIANG JAVA SPECIALTY CHEM CO LTD
Method for preparing vanadium pentoxide from vanadium-containing solution
InactiveCN102167400AQuality improvementAvoid it happening againVanadium oxidesAmmonia nitrogenMaterials science
The invention relates to a method for preparing vanadium pentoxide from vanadium-containing solution. The method mainly comprises the following steps of: oxidizing the vanadium-containing solution, adjusting the pH value, settling red vanadium or directly adjusting the pH value to settle the red vanadium; and calcining the red vanadium to obtain the vanadium pentoxide, washing sodium by using the vanadium pentoxide, and drying to obtain a refined vanadium product. The method has the advantages of good quality of product, small using amount of reagent, low production cost and the like, and the ammonia nitrogen waste water is not produced.
Owner:CENT SOUTH UNIV
Environment-friendly fire retardant polypropylene material of non-precipitating fire retardant and method for preparing same
The invention discloses an environment-friendly fire retardant polypropylene material of a non-precipitating fire retardant and a method for preparing the same. The polypropylene material is prepared from the following raw materials in percentage by weight: 80 to 91 percent of polypropylene resin, 6 to 11 percent of composite fire retardant, 0.8 to 2 percent of nylon resin, 0.8 to 1 percent of compatilizer, 1 to 5 percent of black masterbatch, 0.2 to 0.5 percent of antioxidant, and 0.2 to 0.5 percent of processing aid. The preparation method comprises the following steps of: mixing the raw materials according to the proportion, stirring the mixture by a high-speed mixer for 0.5 to 1 minute for even mixing, adding the mixture into a co-rotating twin-screw extruder with the length-diameter ratio of 30:1-75:1, controlling the temperature of the twin-screw extruder to between 180 and 210 DEG C, and obtaining the finished product by melt extrusion, tension bracing, cooling and granulation.The polypropylene material is suitable for manufacturing a shell of an electric product; and the shell has good fire retardant property, and the fire retardant is not precipitated from the surface when the shell is used for a long time, so that the appearance of the product is not affected, and the product is environment-friendly.
Owner:GUANGDONG JUSHI CHEM CO LTD
High-build epoxy coal tar pitch anticorrosive coating and preparation method thereof
InactiveCN102040902AGood resistance to microbial damageModerate softening pointCorrosion preventionAnti-corrosive paintsN-Butyl AlcoholTalc
The invention relates to a high-build epoxy coal tar pitch anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps of: adding dimethylbenzene, n-butyl alcohol, butanone, coal tar pitch resin liquid, toughened resin, precipitated barium sulfate, silk mica powder, talc powder, a hoof-joint type rheological control aid, a coupling agent 01, a CibaEFKA3650 aid, an organic defoaming agent and poly organic carboxylate into bisphenol A type epoxy resin with medium molecular weight, stirring, dispersing at a high speed, and grinding into a component A; stirring phenolic ammonia, an accelerator, ethanol and a CibaTINUVIN 460 light stabilizer to form a component B; and uniformly mixing the component A and the component B in a ratio of 10:1. The high-build epoxy coal tar pitch anticorrosive coating has certain toughness, and has excellent adhesion, high microbial corrosion resistance, long construction operating period and certain light ageing resistance when applied to prestressed concrete cylinder pipe (PCCP) exterior walls.
Owner:TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC
Mortierella alpine mutant strain and applications thereof
ActiveCN103642698AImprove qualityLow freezing pointFungiMicroorganism based processesOil qualityCrystallization
The invention relates to a mortierella alpine mutant strain ZR36 and applications thereof. Mortierella alpine ZR36 is preserved in China Center for Type Culture Collection (CCTCC) on 13th, September, 2013; preservation address is Wuhan university, Wuhan, China; and preservation number is CCTCC No.M2013419. The invention also provides applications of mortierella alpine ZR36 in production of arochidonic acid oil with low long-chain saturated fatty acid content. The content of long-chain saturated fatty acids, especially the content of long-chain saturated fatty acids containing more than twenty carbon atoms, in the arochidonic acid oil prepared using mortierella alpine ZR36 CCTCC No.M2013419 is relatively low (the total content of the long-chain saturated fatty acids containing more than twenty carbon atoms is less than 15wt%), so that freezing point of the obtained arochidonic acid oil can be reduced significantly, crystallization separation of saturated fatty acids caused by solidification of the arochidonic acid oil at relatively low temperatures is impossible, and oil quality is relatively high.
Owner:CABIO BIOTECH WUHAN CO LTD
Flame-retardant polyester
InactiveCN106947070AHigh phosphorus contentImprove flame retardant performanceFireproof paintsPolyester coatingsPolyesterHydrogen
The invention relates to flame-retardant polyester. The flame-retardant polyester has a structure as shown in a formula I which is described in the specification. In the formula I, each A' is independently selected from the group consisting of residues of diols; each B' and each B'' can be the same or different and are independently selected from the group consisting of residues of saturated or unsaturated anhydrides or acids; C' and C'' can be the same or different and are independently selected from the group consisting of residues of hydrogen and epoxy acrylate compounds under the limiting condition that C' and C" can not be hydrogen simultaneously; a is an integer in a range of 1 to 30; b is an integer in a range of 1 to 30; c is an integer in a range of 1 to 15; and the flame-retardant polyester has an acid value of 20 to 40. The invention also relates to a method for preparing the above-mentioned flame-retardant polyester and a composition containing the flame-retardant polyester.
Owner:ETERNAL MATERIALS CO LTD
Combined process for co-pyrolysis of coal and petroleum refining by-product
ActiveCN103788968AIncrease polarityImprove microwave absorption performanceDirect heating destructive distillationSpecial form destructive distillationMicrowave pyrolysisTar
The invention discloses a combined process for co-pyrolysis of coal and petroleum refining by-products. Feed coal is crushed, sent into a preheating drying zone, and mixed with petroleum refining by-products from a heat transfer system; and the mixture of coal and petroleum refining by-products is sent into a microwave pyrolysis reactor to generate semi coke and high temperature pyrolysis gas, the pyrolysis gas carries out heat exchange with the petroleum refining by-products in the heat transfer system and is separated into tar and low temperature pyrolysis gas, and the low temperature pyrolysis gas enters into a condenser system for further separation into tar and coal gas. The combined process can realize simultaneous pyrolysis of coal and petroleum refining by-products in the same temperature range to generate synergistic effect, so as to increase the yield of coal tar and improve the quality of coal tar.
Owner:CHINA PETROLEUM & CHEM CORP +1
Tyrosinase inhibitor microemulsion as well as preparation method and application thereof
InactiveCN103598988ASolve insolubleImprove biological activityCosmetic preparationsOrganic active ingredientsSolubilityDisease
The invention discloses tyrosinase inhibitor microemulsion as well as a preparation method and an application thereof, and belongs to the technical fields of foods, medicines and cosmetics. The microemulsion contains a matrix, a tyrosinase inhibitor norartocarpetin and water, wherein the matrix comprises 40%-60% of surface active agent, 20%-45% of cosurfactant and 5%-20% of oil phase; and the microemulsion is prepared by adding raw components according to a certain ratio. The tyrosinase inhibitor microemulsion can be used for overcoming the defects that the solubility of the natural tyrosinase inhibitor norartocarpetin in water is extremely low. The method provided by the invention is simple to operate and can be used for the spontaneous formation of the microemulsion. Nanoscale microemulsion can be formed by using water or an aqueous solution for diluting the tyrosinase inhibitor microemulsion. The obtained microemulsion can be used for effectively resisting enzymatic browning of fruits and vegetables, and preparing whitening cosmetics and other medicines for preventing and treating human hyperpigmentation diseases and melanomas (caused by excessive melanin) needing to inhibit the activity of tyrosinase.
Owner:JIANGNAN UNIV
A highly-wear-resistant thermoplastic polyurethane elastomer and a preparing method thereof
A preparing method of a highly-wear-resistant thermoplastic polyurethane elastomer is disclosed. The method includes 1) a step of preparing a mixture of polyester diol and 1,4-butanediol, namely a step of mixing the polyester diol and 1,4-butanediol according to a weight ratio of 100:15-100:40, adding a trace amount of silicone oil into the mixture, fully stirring the mixture at 80-90 DEG C for 0.5-1 h to obtain the mixture of the polyester diol and the 1,4-butanediol; and 2) a step of mixing and reacting the mixture obtained in the step 1), 4,4'-diphenylmethane diisocyanate the weight of which is 50-90% of the weight of the mixture, and a trace amount of a catalyst that is stannous 2-ethylhexanoate to obtain the polyurethane elastomer. The objective of the invention is to provide the highly-wear-resistant thermoplastic polyurethane elastomer which has low oil and powder exudation rates, good basic wear resistance and a low auxiliary agent exudation rate and the preparing method thereof.
Owner:清远新力化机有限公司
Method for preparing hydrogen peroxide
InactiveCN102001631ALow costReduce contentPeroxides/peroxyhydrates/peroxyacids/superoxides/ozonidesOrganic solventPhosphate
The invention discloses a method for preparing hydrogen peroxide. The hydrogen peroxide is prepared by hydrogenating, oxidizing and extracting working solution prepared from alkyl anthraquinone and an organic solvent. The method is characterized in that: the working solution is prepared from ethyl anthraquinone, amyl anthraquinone, tetrahydro amyl anthraquinone, tetrahydro ethyl anthraquinone and the organic solvent; the total anthraquinone accounts for 16 to 30 mass percent of the working solution; the total ethyl anthraquinone accounts for 46 to 75 molar percent of the total anthraquinone; the total amyl anthraquinone accounts for 25 to 54 molar percent of the total anthraquinone; the molar ratio of the tetrahydro ethyl anthraquinone to the ethyl anthraquinone is 0.26-2.67:1; and the organic solvent is mixture of arene and trioctyl phosphate, mixture of heavy aromatic and tetra-n-butylurea or mixture of the heavy aromatic, the trioctyl phosphate and the tetra-n-butylurea. Compared with the prior art, the method has the advantages of simplicity, convenience in operation, safety, readily available raw materials, low cost, high productivity and no environmental pollution, and is a hydrogen peroxide production process with extremely high industrial production value.
Owner:SHANGHAI FULEI INT TRADING
Tyrosinase inhibitormicro-emulsion and preparation method and application thereof
InactiveCN103960351ASolve insolubleImprove biological activityCosmetic preparationsOrganic active ingredientsDiseaseSolubility
The invention discloses a tyrosinase inhibitormicro-emulsion and a preparation method and an application of the tyrosinase inhibitor micro-emulsion, and belongs to the technical fields of foods, medicines and cosmetics. The micro-emulsion comprises a ground substance, tyrosinase inhibitors including steppogenin and artocarpanone, and water, wherein the ground substance comprises 45%-60% of surfactant, 20%-30% of cosurfactant and 10%-30% of oil phase. The micro-emulsionis prepared from various materials according to certain ratios. The defect of extremely low solubility of the tyrosinase inhibitors including steppogenin and artocarpanone in the water is overcome, the method which is simple in operation and can spontaneously form the micro-emulsion is provided, and the water or an aqueous solution is used for dilution so as to prepare the micro-emulsion with nanoscale grain size. The prepared micro-emulsion can be effectively used for preventing enzymatic browning of fruits and vegetables, preparing skin whitening cosmetics, preventing and treating chromatosis diseases and melanoma of a human body that are caused by excessive melanin, and preparing other medicines requiring inhibition of the tyrosinaseactivity.
Owner:JIANGNAN UNIV
Lansoprazole freeze-dried injection
ActiveCN101313895BGood resolubilityGood substance contentPowder deliveryOrganic active ingredientsForeign matterFiltration
Owner:JIANGSU AOSAIKANG PHARMA CO LTD
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