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Preparation method for chitosan natural polymer modified crude oil desalting demulsifier
ActiveCN106188552ALimited demulsibilityIntensify the degree of emulsificationDewatering/demulsification with chemical meansQuaternary ammonium cationNon toxicity
The invention relates to a preparation method for a chitosan natural polymer modified crude oil desalting demulsifier. The method comprises the following steps: 1) modifying polyethylene glycol monomethyl ether by halogenating; 2) preparing glycidyl dimethyl alkyl ammonium chloride; 3) preparing quaternized carboxy alkyl chitosan; 4) causing the modified polyethylene glycol monomethyl ether to react with the quaternized carboxy alkyl chitosan, thereby obtaining a target product, polyethylene glycol monomethyl ether grafted quaternized carboxy alkyl chitosan. According to the invention, the chitosan natural high-molecular compound is taken as the raw material and has the advantages of wide resource, naturality, non-toxicity, sustainability, excellent biological compatibility of products, degradability, and the like. The demulsifier prepared according to the invention has excellent demulsification dewatering effect; the molecule of the demulsifier contains a large amount of carboxy alkyl groups and quaternary ammonium salt groups and the electronegative ions, including metal cation, naphthene acid radicals, and surfaces are electronegative grains and have strong combining capacity, so that the demulsifier has the capacities of demulsifying while removing oil-soluble salt.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Preparation method of polyether-grafted chitosan derivative crude oil desalting demulsifier
ActiveCN106279706AWide variety of sourcesDegradableDewatering/demulsification with chemical meansQuaternary ammonium cationPolyethylene glycol
The invention relates to a preparation method of a polyether-grafted chitosan derivative crude oil desalting demulsifier. The preparation method comprises the following specific steps: firstly, performing formylation modification on polyethylene glycol monoethylether; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternarization carboxyalkyl chitosan; fourthly, enabling formylation modified polyethylene glycol monoethylether to react with carboxy alkyl chitosan to obtain the polyether-grafted chitosan derivative crude oil desalting demulsifier. The polyether-grafted chitosan derivative crude oil desalting demulsifier disclosed by the invention is prepared by taking chitosannatural polymeric compounds as raw materials, and has the advantages of wide sources, naturalness, no toxicity, sustainability, good biocompatibility of a product, degradability and the like. The prepared demulsifier is good in demulsifying and dehydrating effect; meanwhile, a demulsifying molecule contains a large amount of carboxyalkyl groups and quaternary ammonium salt groups which have strong combining capacity to metal cation, ions with negative electricity such as naphthenic acid radicals as well as particles of which the surfaces are electronegative, so the polyether-grafted chitosan derivative crude oil desalting demulsifier has capacity of removing oil-soluble salts while demulsifying.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Synthesis method of crude oil desalting demulsifying agent
ActiveCN106279707ALimited demulsibilityIntensify the degree of emulsificationDewatering/demulsification with chemical meansHydrocarbon oils treatmentQuaternary ammonium cationSynthesis methods
The invention relates to a synthesis method of a crude oil desalting demulsifying agent. The method specifically includes the steps of firstly, conducting p-nitrophenyl ester modification on methoxypolyethylene glycol; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternized carboxy alkyl chitosan; fourthly, making the modified methoxypolyethylene glycol react with quaternized carboxy alkyl chitosan to obtain a product, namely polyethylene glycol questin grafted quaternized carboxy alkyl chitosan. A chitosan type natural high-molecular compound serves as the raw material and has the advantages of being wide in resource, natural, free of toxin, sustainable, good in product biocompatibility, degradable and the like; The prepared demulsifying agent is good in demulsifying dewatering effect; meanwhile, due to the fact that lots of carboxy alkyl groups and quaternary ammonium salt groups are contained in demulsifying agent molecules and have strong binding capacity with metal cations, naphthenic acid radicals and other ions with negative charges and particles with surface electronegativity, the oil-soluble salt removing capacity is achieved during demulsifying.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Resist composition, method of forming resist pattern, novel compound, and acid generator
ActiveUS20100136478A1Good solubilityExcellent propertyOrganic chemistryOrganic compound preparationCarbonyl groupSolubility
A resist composition including a base component (A) which exhibits changed solubility in an alkali developing solution under action of acid and an acid-generator component (B) which generates acid upon exposure, the acid-generator component (B) including an acid generator (B1) containing a compound having a cation moiety represented by general formula (I) (in the formula, R5 represents an organic group having a carbonyl group, an ester bond or a sulfonyl group; and Q represents a divalent linking group).
Owner:TOKYO OHKA KOGYO CO LTD
Multifunctional ion liquid system, preparation and application thereof
InactiveCN101037388AImprove activity and stabilityGood solubilityOrganic compound preparationGroup 5/15 element organic compoundsIonSolvent
The invention relates to a complex function ion liquid system, producing method and the application thereof belonging to new material and refinery chemical field. The complex function ion liquid system is composed of phosphine ligand functional ion liquid and alkali functional ion liquid, in which the phosphine ligand functional ion liquid is to link the traditional phosphine ligand to the typical ion liquid with an introducing position on the cation segment or the anion segment of the ion liquid. The cation ion and anion ion parts of the alkalescence functional ion liquid may have the alkaline group respectively or simultaneously. The provided complex function ion liquid can be applied in the coupling reaction of C-C / C-N. The advantages is that: complex function ion liquid system simultaneously plays a role of ligand, attaching acid agent and solvent and puts up an integrated cooperative catalytic effect; and it can be reused for several times and avoids using the poisonous, harmful and volatile organic solvent.
Owner:EAST CHINA NORMAL UNIVERSITY
Low-temperature acidification corrosion inhibitor and preparation method thereof
The invention relates to a low-temperature acidification corrosion inhibitor which is composed of 10-50 parts by weight of alkynol, 10-50 parts by weight of quaternary ammonium salt and 5-10 parts by weight of heterocyclic compound, wherein the alkynol is selected from butyn alcohol, hexynol, popargyl alcohol, 1,4-butyne glycol, dormison, methyl butynol, butyne glycol, and 4-trimethylsilyl isocyanate-3-butyn alcohol; the quaternary ammonium is selected from dimethyl benzyl ammonium chloride, rosin modified oleic acid group imidazoline quaternary ammonium salt, quaternary ammonium tribenzal-imidazoline, (4-vinyl)-quinoline benzyl quinoline chloride quaternary ammonium salt, (4-vinyl)-quinoline benzyl pyridine chloride quaternary ammonium salt, epoxypropane group quinoline chloride, epoxypropane group pyridine chloride, allyl quinoline chloride and allyl pyridine chloride; the heterocyclic compound is selected from bromination hexadecy pyridine, cetylpyridine chloride, chlorinated dodecyl pyridine and bromination myristyl lycine pyridine. The invention also relates to a preparation method of the low-temperature acidification corrosion inhibitor.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Tower-smelt organic-inorganic compound fertilizer and preparation method thereof
ActiveCN101781134AHigh nutrient contentGood solubilityAmmonium nitrate fertilisersOrganic fertilisersUreaChemistry
The invention discloses a tower-smelt organic-inorganic compound fertilizer and a preparation method thereof. The invention relates to the agriculture technical field, and specifically relates to an organic-inorganic compound fertilizer and a preparation method thereof. The method comprises the following steps: A, mixing carbamide solution or ammonium nitrate solution with potash fertilizer to obtain the mixture; and B, mixing and chelating potassium fulvate or ammonium humate with the mixture. In the organic-inorganic compound fertilizer prepared by the method, the weight percentage of the total content of nitrogen, phosphorus and potassium is more than or equal to 20%, the weight percentage of the content of the potassium fulvate or the humate is more than or equal to 8%, and the weightpercentage of the content of moisture is less than or equal to 2.0%. The organic-inorganic compound fertilizer has quick action of the chemical fertilizer, and also has the long residual action, soilimprovement effect and multifunctional environmental protection of the organic fertilizer, achieving the multiple effects of developing agriculture, improving soil and the like.
Owner:张博哲
Production technology of low-temperature instant-dissolving agar
The invention discloses production technology of low-temperature instant-dissolving agar. The technology includes the steps: adding cosolvent into seaweed glue liquid or adding water into agar and cosolvent, boiling, dissolving completely, processing through a high-pressure or superpressure device, dehydrating through a plate-and-frame filter press, microwave drying to sterilize till an appropriate amount of water is left, smashing and sieving to obtain low-temperature instant-dissolving products (physical modified agar); or processing through the high-pressure or superpressure device and spray-drying to obtain the products (physical modified agar); or processing through the high-pressure or superpressure device, superfreezing, thawing, filter-pressing, extruding through a screw compressor, airing and smashing to obtain the products (physical modified agar). The low-temperature instant-dissolving agar produced by using the technology method has the advantages of being fast in dissolving at the low temperature.
Owner:青岛德慧海洋生物科技有限公司
Polycyclic aromatic compound and light emission layer-forming composition
ActiveUS20180094000A1Good film formabilityGood solubilitySolid-state devicesSemiconductor/solid-state device manufacturingOrganosolvOligomer
The objective of the invention is to provide a polycyclic aromatic compound in which solubility to a solvent, film formability, wet coatability, thermal stability, and in-plane orientation are improved. This objective is achieved by a light emission layer-forming composition comprising: as a first component, at least one type of dopant material selected from the group consisting of polycyclic aromatic compounds represented by general formula (A) and polycyclic aromatic oligomer compounds including a plurality of structures represented by general formula (A); as a second component, a specific low-molecular-weight host material; and, as a third component, at least one type of organic solvent. In formula (A), ring A, ring B, and ring C each independently represent an aryl ring or a hetero aryl ring, Y1 is B, and X1 and X2 each independently represent O or N—R wherein at least one of X1 and X2 is N—R.
Owner:SK MATERIALS JNC CO LTD +1
Transdermal patch containing pramipexole
ActiveCN103432104AGood solubilityImprove uniformityOrganic active ingredientsNervous disorderSolventMicrogram
The invention discloses a transdermal patch containing pramipexole. The transdermal patch comprises a medicine carrying pressure-sensitive adhesive layer, the pramipexole, solvent and penetration enhancer, wherein the medicine carrying pressure-sensitive adhesive layer comprises acrylate pressure-sensitive adhesive containing carboxyl base groups and acrylate pressure-sensitive adhesive containing hydroxyl base groups, which form mixed pressure-sensitive adhesive; the pramipexole is dissolved in the acrylate mixed pressure-sensitive adhesive, with the content being 10 to 30 weight percent; the content of the mixed pressure-sensitive adhesive is 50 to 80 weight percent; the content of the solvent is 5 to 20 weight percent; the content of the penetration enhancer is 2 to 15 weight percent. The pramipexole can be dissolved in a mixed pressure-sensitive adhesive patch in a high concentration way and is not crystallized, the medicine availability is high, the pramipexole has good stability in pressure-sensitive adhesive matrix, and can be continuously administrated for 5 to 7 days in a transdermal way at a relatively stable permeation rate of being larger than 5.0 micrograms / cm2 / h, and the application area of a pramipexole patch is smaller than 40cm2.
Owner:GUANGDONG HONGSHANHU PHARM CO LTD
Wine of Jobíõs tear rice and method for preparing same
InactiveCN101333482AReduce cholesterolLower blood sugarAlcoholic beverage preparationCoixTreatment fever
The invention relates to a coix seed wine and a method for the production thereof, comprising the following materials in weight percentage: coix seed 20 to 30 percent, chrysanthemum 0.5 to 1 percent, cortex lycii radicis 1 to 1.5 percent, fleece-flower root 1.2 to 1.7 percent, and balance other grains. The coix seed wine combines all the materials, and is prepared by adopting the brewing technique, when taking excessive wine, the injury to intestine and stomach, liver, gallbladder, kidney and nerves can be alleviated, meanwhile, the wine has the efficacies of warming the intestine and stomach, inducing five pulses, regulating four limbs, promoting circulation of qi and blood, nourishing bones and muscles, benefiting spirit, darkening beard and hair, lighting the body, prolonging life, reducing fever and invigorating the lung.
Owner:赵文章
Preparation Methods and Uses of Doped VIB Group Metal Oxide Nanoparticles or Dispersions Thereof
InactiveUS20160178804A1Good solubilityFast reaction speedPigmenting treatmentOptical filtersTungstenThermal radiation
The present invention is related to a method for preparing VIB Group metal oxide particles or dispersions, wherein the VIB Group metal is tungsten or molybdenum. The methods include: 1) providing precursors of VIB Group metal oxide, reductants and supercritical fluids. 2) said VIB Group metal oxide particles, or dispersions are obtained by the reaction between said metal oxide precursors, and reductants are under supercritical state in said supercritical fluids. Especially, said VIB Group metal oxide can be tungsten bronze, molybdenum bronze, or tungsten and molybdenum bronze which can be present by the formula AxByMOz. Wherein, A represents element exists in the form of dopant cation; and B represents element exists in the form of dopant anion; O represents oxygen; 0≦x≦1, 0≦y≦1, 0<x+y≦1, and 2≦z≦3. The said VIB Group metal oxide particles and dispersions can be applied to the glasses of houses, buildings, automobiles, ships etc, with high transparency and NIR and UV lights shielding properties, by which the control of sunlight and heat radiation can be achieved.
Owner:BEIJING UNIV OF CHEM TECH +1
Starlike anti-shearing polyacrylamide for fracturing fluid and preparation method of starlike anti-shearing polyacrylamide
ActiveCN104497220AGood solubilityRegular and compact structureDrilling compositionPolyamideThioxanthone
Owner:SOUTHWEST PETROLEUM UNIV
Preparation method and applications of ant polypeptide
InactiveCN101928745AEasy to absorbGood solubilityNervous disorderHydrolysed protein ingredientsChemistryProtease
The invention relates to a preparation method and applications of ant polypeptide. The invention mainly overcomes the defects of difficult digestion and absorption and poor processing performance of ant protein. The method comprises the following steps: firstly, cleaning ants, drying the ants at low temperature, and crushing and sieving the ants to prepare dry ant powder; carrying out degreasing treatment by utilizing a supercritical CO2 extraction technology to prepare the ant protein; carrying out enzymolysis on the degreased ant protein by protease; then inactivating enzymes, sterilizing and filtering; carrying out vacuum concentration; and freeze-drying or spray-drying to obtain ant polypeptide powder. The ant polypeptide prepared according to the invention has stable properties and good processing performance, can be stored easily, and can be widely used for medicines, health care products, food raw materials or food additives; and because the ant polypeptide has low cost, less investment, high effect taking speed and high additional value, the ant polypeptide is suitable for industrialized production.
Owner:WUHAN TAIJI SANFENG BIOTECH
Cisplatin complex and preparation method thereof
ActiveCN102863627AGood biocompatibilityGood solubilityHeavy metal active ingredientsPharmaceutical non-active ingredientsSide chainSolubility
The invention provides a cisplatin complex which is formed by complexing cisplatin with polymer with a structure as a formula (I), and further provides a preparation method of the cisplatin complex. The cisplatin and the polymer with the structure as the formula (I) are in complex reaction in aqueous media to generate the cisplatin complex. The cisplatin complex has fine biocompatibility and is degradable, and polyethylene glycol is grafted on a side chain of the polymer, so that the prepared cisplatin complex has fine dissolvability. When the cisplatin complex is dissolved in the aqueous media, the cisplatin is protected by a hydrophilic polyethylene glycol chain segment and a hydrophobic amino acid chain segment, and accordingly sudden release of cisplatin caused by influences of a blood circulation system after intravenous injection can be effectively avoided, and stability of the cisplatin complex is improved. In addition, carboxyl contained in the cisplatin complex has pH sensitivity and deprotonation tendency in a low-pH environment, medicine release is facilitated, and medicine curative effect can be improved.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Nano composite material of asymmetric phthalocyanine and carbon nano-tube and preparation method thereof
InactiveCN101100563AGood solubilityImprove photoconductivityPigment treatment with non-polymer organic compoundsChemistryNanometre
A nanometer composite material of asymmetric phthalocyanine and carbon nanometer tube and its production are disclosed. The process is carried out by reacting organic small-molecular chemically modified carbon nanometer tube with nitro-substituted phthalic nitrile monomer to obtain carbon nanometer tube with phthalic nitrile group, in situ reacting it with phthalic nitrile monomer to obtain final product. It's tight and homogeneous, it has excellent dissolving, filming and photoelectric performances. It can be used in conductive, luminescent, solar battery and transistor industries.
Owner:TONGJI UNIV
Steel-structure anti-corrosion coating and preparing mehtod thereof
An anticorrosion paint for steel structure is prepared from the modified high-chlorinated polyethylene and alkyd resin or organic silicon modified acrylic resin, filler and assistant through respectively preparing priming paint and surface paint. Its advantages are high resistance to acid, alkali, salty fog, moisture and high temp. and low cost.
Owner:TONGJI UNIV
Freeze dried powder injection of cytarabine and its preparation process
InactiveCN1621042AGood solubilityGood solubility and stabilityPowder deliveryOrganic active ingredientsFluoroplexSolubility
The present invention relates to one kind of freeze dried fluoroplex powder for injection with visceran including fluoroplex, pH regulator, surfactant and / or freeze drying excipient. The preparation process includes adding fluoroplex into water, adding pH regulator under stirring to pH 8.4-9.2 and to clarify, filtering with microporous filtering membrane, freeze drying and sealing. Compared with common water injection of fluoroplex, the freeze dried fluoroplex powder for injection has higher stability, excellent dissolubility, high safety and long effective period.
Owner:HAINAN PULIN PHARMA +2
Pharmaceutical composition containing ibrutinib
InactiveCN106619643AGood solubilityGood compatibilityOrganic active ingredientsPharmaceutical non-active ingredientsDrugOrganic acid
The invention relates to a pharmaceutical composition containing ibrutinib. The pharmaceutical composition is prepared from, by weight, 13-15 parts of ibrutinib, 30-50 parts of solvent, 20-30 parts of solubilizer, 8-12 parts of filler, 6-10 parts of disintegrant and 21-26 parts of officinal organic acid, wherein the solvent is glycerolformal, and the officinal organic acid is a mixture of oleic acid and glyceryl monooleate based on the mass ratio of (1.7-2.1):1. The pharmaceutical composition containing ibrutinib has the advantages that compared with traditional pharmaceutical compositions, the variety of the solvent in the formula is changed, glycerolformal which is high in safety performance serves as the solvent with dosage unlimited, and multiple medicines are soluble in glycerolformal; meanwhile, due to the fact that the officinal organic acid is a mixture of oleic acid and glyceryl monooleate, the pharmaceutical composition containing ibrutinib is more stable and simpler than traditional pharmaceutical compositions adopting single officinal organic acid.
Owner:ABA CHEM SHANGHAI
Chestnut shell natural brown pigment extraction method
The invention relates to Chestnut shell natural brown pigment extraction method, which consists of refining the crude extract of chestnut shell brown pigment with aqueous solution of ethanol, stewing, filtering, drying the precipitate directly or by water spraying, thus obtaining refined pigment I product, recovering ethanol from the filtrate, evaporating the aqueous solution to dryness or spray drying, thus obtaining refined pigment II product.
Owner:SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
Benzimidazole-substituted polyimide, preparation method thereof, benzimidazole-substituted polyimide film, and preparation method and application of film
The invention provides a benzimidazole-substituted polyimide, a preparation method thereof, a benzimidazole-substituted polyimide film, and a preparation method and an application of the film, and belongs to the technical field of polyimide materials. The glass transition temperature of the benzimidazole-substituted polyimide film is 328-431 DEG C, the 5% thermal decomposition temperature is 498-537 DEG C, the tensile strength is 69-190 MPa, the tensile modulus is 3.5-6.2 GPa, the water absorption rate is 1.12-1.78%, the thermal expansion coefficient is 2.5-48.0 ppm / K, and the film is thermally soluble in m-cresol, N-methylpyrrolidone, dimethyl sulfoxide, N,N-dimethylformamide, N,N-dimethylacetamide and tetrahydrofuran organic solvents. The benzimidazole-substituted polyimide film providedby the invention has the advantages of high thermal stability, good dimensional stability, low water absorption rate, excellent mechanical properties, and good solubility in organic solvents.
Owner:DONGHUA UNIV
Blue reactive dyes for wool and preparation method thereof
The invention discloses blue wool reactive dye and a preparation method thereof. The general formula of the dye is as shown (on the lower right). The preparation method for the blue reactive dye comprises the following steps: copper phthalocyanine, a chlorosulfonic acid, thionyl chloride, ethanolamine and oleum are taken as main raw materials, and the blue wool reactive dye is prepared by chlorosulfonation, condensation, esterification, improvement of the concentration of the dye, adjustment of the chromatic light, adjustment of the strength, drying and packaging. The blue wool reactive dye obtained has higher reactivity, superior solubility, colorful chromatic light, good lightfastness performance and high exhaustion rate and fixation rate, and does not contain free metal ions and chemical raw materials which are strictly prohibited to be used. By adoption of the pre-mixing technology after film treatment, waste water and waste residue can be prevented from being generated, so that the blue wool reactive dye greatly promotes environmental protection.
Owner:TIANJIN DEK CHEM
Environmentally-friendly hot-melt pressure sensitive adhesive and preparation method thereof
PendingCN110093128AUniform molecular weightGood solubilityMineral oil hydrocarbon copolymer adhesivesNon-macromolecular adhesive additivesEnvironmental resistanceAntioxidant
The invention discloses an environmentally-friendly hot-melt pressure sensitive adhesive. The environmentally-friendly hot-melt pressure sensitive adhesive is prepared from, by weight, 25-35 parts ofa thermoplastic elastomer, 28-36 parts of modified petroleum resin, 6-10 parts of natural tackifying resin, 12-20 parts of a plasticizer, 2-3 parts of a modifying filler, 0.2-0.3 part of a coupling agent and 0.2-0.3 part of an antioxidant. The present invention also discloses preparation method of the hot-melt pressure sensitive adhesive. The thermoplastic elastomer is used as a matrix for the hot-melt pressure sensitive adhesive, the modified petroleum resin and the natural tackifying resin are used as tackifying resins, and no organic solvent is needed, so the raw materials are safe and environmentally friendly; the petroleum resin is modified, so the compatibility of the petroleum resin and the thermoplastic elastomer is improved, and the thermal stability of the hot-melt pressure sensitive adhesive is improved; and the reinforcing effect of the modifying filler improves the initial viscosity, the glass strength and the thermal stability of the hot-melt pressure sensitive adhesive are improved, so the environmentally-friendly hot-melt pressure sensitive adhesive with excellent performances is prepared.
Owner:黄敏
Dye for supercritical carbon dioxide dying and preparation and application of dye
ActiveCN103408961AGood solubilityThe synthesis process is simpleMonoazo dyesDyeing processEnvironmental chemistryColour fastness
The invention relates to a preparation method of dye and an application of the dye for supercritical carbon dioxide dying. The dye has a structural general formula as shown in specification, wherein R1 represents F or Cl, and R2 represents -N(CH3)2 or -N(C2H5)2. The dye is relatively moderate in dying condition, and is used for dying cotton fabrics under various conditions that the dying temperature is 60-100 DEG C, the dying duration is 1-3 hours, the dye concentration is 1-3%owf and the pressure is 200bar as well as used for implementing fastness and fixation rate tests on the dyed cotton fabrics.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Method for producing natural brown pigment of chestnut case
The invention relates to the technique of natural edible pigment in the food additives, which in detail a method for producing natural chestnut shell brown pigment, breaking the chestnut shell, extracting with base solvent after removing the flocculus, filtering the extracting fluid, condensing the filtering fluid, depositing, separating, drying and getting the natural chestnut brown pigment. The invention is characterized by the high productivity, good product quality, strong stability, simple process, low cost, changing the disposal to useful things, which opens a new way of producing natural brown pigment for food industry and at the same the industrialized production of the pigment contributes a lot for protecting ecological environment and increasing social benefit.
Owner:SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
Selfheal polysaccharide zinc chelate as well as preparation method and application thereof to anti-cancer drug
InactiveCN104031156AImprove reaction efficiencyGood solubilityOrganic active ingredientsMetabolism disorderAntiproliferative effectUltrafiltration
The invention discloses a selfheal polysaccharide zinc chelate as well as a preparation method and application thereof to an anti-cancer drug. The method comprises the following steps: crushing selfheal clusters, decolorizing by use of ethanol, adding distilled water, performing reflux extraction, deproteinizing the extracting solution, performing ultrafiltration, and freeze-drying the retained liquid to obtain polysaccharide; preparing a polysaccharide solution of which the concentration is 10 mg / mL to 40 mg / mL, heating to the temperature of 40-60 DEG C, regulating pH by using sodium hydroxide, slowly adding a zinc salt solution into the polysaccharide solution, reacting for 6-24 hours, simultaneously performing an discontinuous homogenization process by using a high-shear homogenizer, regulating the pH by using hydrochloric acid, centrifuging to obtain supernatant liquor, putting the supernatant liquor into a dialysis bag for dialysis, collecting the solution in the dialysis bag, and performing freeze-drying to obtain the selfheal polysaccharide zinc chelate. The product disclosed by the invention is simple and easy to implement in preparation method, has a remarkable anti-proliferation effect on human cancer cells and also causes no cytotoxicity to normal cells of the human body, so the selfheal polysaccharide zinc chelate is an ideal anti-cancer drug or a health care product and also has a zinc replenishment effect.
Owner:SOUTH CHINA UNIV OF TECH +1
Technical method for preparing 2-ethyl-2-hexenal by catalyzing self-condensation of n-butyraldehyde with acidic ionic liquid
ActiveCN102701926AGood solubilityLow steam pressureOrganic compound preparationCarbonyl compound preparationSelf-condensationEthyl phosphate
The invention relates to a technical method for preparing 2-ethyl-2-hexenal by catalyzing self-condensation of n-butyraldehyde with an acidic ionic liquid. The technical method comprises the following steps: adding the n-butyraldehyde and an acidic ionic liquid catalyst into a high-pressure autoclave, wherein the using amount of the acidic ionic liquid catalyst is 1-50 percent of the mass of the n-butyraldehyde; and magnetically stirring at 50-150 DEG C and reacting for 0.5-12h, wherein after self-condensation reaction of the n-butyraldehyde, the 2-ethyl-2-hexenal is obtained and the acidic ionic liquid catalyst is a Bronsted acidic ionic liquid or a Lewis acidic ionic liquid. The Bronsted acidic ionic liquid catalyst and the Lewis acidic ionic liquid catalyst are high in catalytic activity, good in selectivity, mild in reaction conditions and reusable; the conversion rate of the n-butyraldehyde is as high as 94.5%; the highest selectivity of the 2-ethyl-2-hexenal is 99.3%; and the acidic ionic liquid catalyst has higher catalytic performance than the traditional industrial liquid alkali catalyst and has a good prospect for industrial application.
Owner:HEBEI UNIV OF TECH
Preparation method of carbon nano tube/ thermoplastic polyurethane photoresponse intelligent driving material
The invention discloses a preparation method of a carbon nano tube / thermoplastic polyurethane photoresponse intelligent driving material. Surface modification is conducted on a carbon nano tube through the acidification and sulfonation processes, the functionalized carbon nano tube is mixed with the thermoplastic polyurethane through a solution mixing method, the carbon nano tube and the polyurethane are evenly mixed through ultrasonic processing, and the mixed solution is poured into a teflon grinding tool and is dried in vacuum mode to obtain a composite film. The composite film has good phofic driving performance, the composite film containing 1 wt% of carbon nano tube is capable of lifting 50g of objects by 3cm under irradiation of light, the response time is 7-8 seconds, and the shape restoring rate can reach over 80%. Simultaneously, the mechanical performance of the material is greatly improved, and the Young modulus is improved by 70% to 100%.
Owner:TIANJIN UNIV
Synthesis method and application of polydopamine modified graphene nanometer material with Ti<4+> fixed on surface
InactiveCN103145996AGood biocompatibilityImprove thermal stabilityPreparing sample for investigationMaterial analysis by electric/magnetic meansSynthesis methodsBiocompatibility Testing
The invention relates to a synthesis method and application of a polydopamine modified graphene nanometer material with Ti<4+> fixed on surface. The method comprises the following steps of: at first, dispersing graphene into dopamine-containing aqueous solution, quickly adding trismetyl aminomethane buffer solution into the dopamine-containing aqueous solution with uniformly distributed graphene under magnetic stirring, magnetically stirring at room temperature for 10 hours, washing and centrifugally separating so as to obtain a graphene nanometer material which has good water dispersibility and is modified by dopamine; and then, dispersing the material into 100mmol / L Ti(SO4)2 solution, magnetically stirring at room temperature for 2 hours, washing and centrifugally separating so as to obtain the polydopamine modified graphene nanometer material with Ti<4+> fixed on the surface. The material has the advantages that a method for fixing Ti<4+> is very simple; the surface is modified by a layer of polydopamine, so that the material has excellent environment stability and biocompatibility as well as good water dispersibility; the material can fix a great mount of Ti<4+>; and the synthesis method is simple and low in cost, and phosphrylation peptides are enriched in the matrix-assisted laser desorption / ionization time of a flight mass spectrometry (MALDI-TOFMS).
Owner:FUDAN UNIV
Vermiculizer for disposing high sulfur melted iron in vermicular cast iron production
The invention discloses a creeping agent used for processing high-sulfur iron melt to produce vermicaular graphite cast iron, containing the components in weight percent: rare-earth (RE) 15-35%, magnesium (Mg) 2-6%, silicon (Si) 35-45%, aluminum (Al) 1-5%, calcium (Ca) 1-5%, zinc (Zn) 0.5-2.5%, barium (Ba) 0.5-2.5%, and iron (Fe) the rest. It is melted of the raw materials of rare-earth silicon iron alloy, metal Mg, SiCa, SiBa, Al ingot, Zn ingot, etc. The invention has the characters of simple operation, good solubility, stable reaction, high absorptivity, high creeping rate, stable creeping effect, and strong anti-decay ability, and can meet the requirements of producing casts at different wall thicknesses, has wide marketing prospect and remarkable economic benefits.
Owner:HUAZHONG UNIV OF SCI & TECH
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