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31 results about "Dimercaprol" patented technology
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Dimercaprol, also called British anti-Lewisite (BAL), is a medication used to treat acute poisoning by arsenic, mercury, gold, and lead. It may also be used for antimony, thallium, or bismuth poisoning, but the evidence for these uses is not very strong. It is given by injection into a muscle.
Method and composition for inhibiting bacteria
InactiveUSRE37793E1Prevent bacterial growthAvoid bacterial infectionHeavy metal active ingredientsBiocidePreservativeDisinfectant
A composition comprising a trivalent bismuth salt, particularly bismuth nitrate, and dimercaprol is described. Methods for using the composition as a bacteriocidal and bacteriostatic agent and as a disinfectant and preservative are also provided.
Owner:WINTHROP UNIV HOSPITAL
Zinc sulfide nano particle with sulfydryl surface finish and preparation method thereof
InactiveCN102765745AGood dispersionImprove bindingMaterial nanotechnologyZinc sulfidesThioureaIn situ polymerization
Provided are a zinc sulfide nano particle with sulfydryl surface finish and a preparation method thereof. A solvent heat synthesis method is adopted, thiourea is selected to serve as a sulfur source, zinc acetate is a zinc source, and N,N-dimethylformamide serves as a reaction medium. 2,3-dimercaprol ethyl sulfo-propanethiol (BES) serves as dressing agent ligand which is mixed with zinc and the sulfur source according to certain proportion, reaction is carried out for 6-12 hours at the temperature of 120-160 DEG C through condensation backflow, the zinc sulfide nano particle with the sulfydryl surface finish is synthetized in situ, particles are even in dispersion, and average size is within 100nm. The zinc sulfide nano particle provided with the sulfydryl surface finish and obtained by using the preparation method is high in interface refractive index, good in dispersibility and moderate in reaction, contribute to in situ polymerization compound with macromolecules, can serve as an electroluminescence material, is particularly suitable to compound with optic plastic to improve refractive index, and serves as optical elements such as a lens.
Owner:JIANGSU UNIV
Dimercaptopropanol modified clay mineral material, and preparation method and application thereof
ActiveCN104549166AQuick removalReduce dosageOther chemical processesWater contaminantsAdsorption equilibriumClay minerals
The invention belongs to the fields of mineral material technology and heavy metal treatment technology, and discloses a dimercaptopropanol modified clay mineral material, and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding clay mineral into anhydrous ethanol to prepare a suspension, and carrying out ultrasonic dispersion treatment on the suspension; (2) adding dimercaptopropanol into the suspension, uniformly mixing, regulating PH value to be acidic, and refluxing to react to obtain a modification product solution; and (3) centrifuging the modification product solution, washing the obtained precipitate to be meutral, drying, grinding and screening to obtain the dimercaptopropanol modified clay mineral material. The dimercaptopropanol modified clay mineral material can be used as an adsorbent for heavy metal wastewater treatment, has the advantages of low material consumption, short adsorption equilibrium time and greatly higher adsorption effect for Hg (II), and is suitable for high-efficiency removal of Hg (II) in wastewater.
Owner:广州市佳境水处理技术工程有限公司
Hypertension three-enzyme inhibitor vacuum blood collection tube and manufacturing method thereof
InactiveCN104510481AReduce tedious workImprove work efficiencyDiagnostic recording/measuringSensorsRubber materialBlood Collection Tube
Provided is a hypertension three-enzyme inhibitor vacuum blood collection tube, an opening plug and a cap used for sealing a blood collection test tube; an anticoagulation agent is arranged inside the blood collection test tube; the opening plug is made of a butyraldehyde rubber material; and the cap is made of a polyethylene material; the manufacturing method comprises the following steps: preparing the anticoagulation agent based on a mass mixing ratio that dimercaprol dimercaptopropanol:8-hydroxyquinoline sulfate:EDTA-k2 = 1:2:4; using a special machine to clean the inner wall of a test tube, and injecting the anticoagulation agent which is well mixed based on the ratio into the test tube in a super clean bench sterile environment; vacuuming based on the volume of the blood collection tube, and assembling the test tube with the safety cap; using an aluminum foil paper to package and keep the blood collection tube in a dark place after the blood collection tube is assembled, thus finishing manufacturing the vacuum blood collection tube; due to the anticoagulation agent is previously arranged inside the blood collection tube, tedious works such as clinically mixing the agent and adding into additives onsite are reduced, thus the blood sample collection is convenient, the work efficiency is increased and the detection effect is more precise.
Owner:WENZHOU GAODE MEDICAL INSTR
Chromium-free passivator with high corrosion resistance for batch hot galvanizing
PendingCN113293365AHigh affinityImprove stabilityHot-dipping/immersion processesO-Phosphoric AcidThiourea
The invention discloses a chromium-free passivator with high corrosion resistance for batch hot galvanizing. The chromium-free passivator is a mixed solution composed of silica sol, phosphoric acid, a complexing agent, nitric acid, a silane coupling agent and deionized water. The chromium-free passivator comprises the following components including, by mass, 1%-5% of silica sol, 0.3%-0.8% of phosphoric acid, 2%-8% of a complexing agent, 5%-10% of a silane coupling agent and the balance deionized water, wherein the complexing agent is one or a combination of more of dimercaptopropanol, sodium dimercaptopropane sulfonate, mercaptoethylamine, mercaptoacetic acid, thiourea, ammonium fluoride and 8-hydroxyquinoline. The invention also discloses a preparation method and a use method of the chromium-free passivator with the high corrosion resistance for batch hot galvanizing. The chromium-free passivator for hot galvanizing contains the silane coupling agent and silica sol, the silane coupling agent has the effect of enhancing the affinity between organic matter and inorganic compounds, toxic and harmful substances such as the chromium element and harmful chemicals are not contained, stability is good, the drying speed is high, and the passivating effect is good.
Owner:WUXI EPIC TECH
Stabilizing agent for treating waste incineration fly ash, preparation method and application thereof
ActiveCN107050733AImprove removal efficiencyEasy to operateTransportation and packagingSolid waste disposalPhosphateOperability
The invention discloses a stabilizing agent for treating waste incineration fly ash. The stabilizing agent comprises the raw materials of alkyl dithiocarbamate, dimercaprol dimercaptopropanol, cellulose, phosphate and water. The stabilizing agent for treating the waste incineration fly ash has the following advantages: the fly ash produced in technologies for incinerating wastes of different type can be treated, so that the applicable scope is wide; effective reaction can be finished under the pH of 4-14 of aqueous solution; the stabilizing agent can be chelated with different heavy metal ions in the waste incineration fly ash in order to generate chelate precipitate which cannot be dissolved in water; in addition, the reaction costs a little time, and the removing efficiency is high; the comprehensive treatment cost is low; the operation is convenient; the stabilizing agent is environmentally friendly, safe and nontoxic; compared with national and international well-known similar products, the stabilizing agent has the advantages that the removing efficiency is high and the operability is outstanding under the same dosage, and the treatment cost per ton is greatly decreased.
Owner:NANJING XINHAO POLYMER MATERIAL
Method for measuring content of magnesium element in aluminum alloy
InactiveCN103558217AThe measurement result is accurateClear end pointMaterial analysis by observing effect on chemical indicatorRare-earth elementEnvironmental resistance
The invention relates to a method for measuring the content of a magnesium element in an aluminum alloy. A compound masking reagent adopts a triethanolamine solution of iminodisuccinic acid, dimercaprol and tetrasodium glutamate diacetate, and triethanolamine reacts with Al<3+> and Fe<3+> to obtain a stable complex under an acidic environment, the formed complex is colorless and easily soluble, the iminodisuccinic acid and Cu<2+>, Ca<2+> and Zn<2+> form a stable complex; tetrasodium glutamate diacetate is strong in complexing power with rare earth element ions; dimercaprol is strong in complexing power with nickel and manganese ions, and is poor in complexing power with other ions. Thus, the compound masking reagent formed by multiple components is used for performing complexing masking on each element except for the manganese ions in the aluminum alloy in a targeted manner, and thus the detection accuracy is improved. The method for measuring the content of the magnesium element in the aluminum alloy, provided by the invention, is accurate in measuring result, and remarkable in end point, and has the environmental-friendly effects in the used reagent without pollution.
Owner:淄博市新材料研究所
Sodium fusidate freeze-dried powder injection and preparation method thereof
ActiveCN103169673AImprove stabilityReduce contentAntibacterial agentsOrganic active ingredientsFreeze-dryingArginine
The invention relates to the field of pharmaceutical preparation, and particularly discloses sodium fusidate freeze-dried powder injection and a preparation method thereof. The sodium fusidate freeze-dried powder injection disclosed by the invention is prepared from sodium fusidate, dimercaprol dimercaptopropanol, erythorbic acid, cysteine hydrochloride, phenylalanine, arginine and injection water in a freeze-drying manner. Preferably, the arginine, the dimercaprol dimercaptopropanol, erythorbic acid, cysteine hydrochloride and phenylalanine are taken as auxiliary materials of the sodium fusidate freeze-dried powder injection; stable performance of the sodium fusidate freeze-dried powder injection is improved by synergistic effect; the content of related substances is reduced; the characters of a product are maintained in a normal requirement; and safe use and long-term storage of clinical drugs are facilitated.
Owner:SHANDONG LUOXIN PARMACEUTICAL GROUP STOCK CO LTD
High-strength reinforced concrete pipe culvert and preparation method thereof
The invention discloses a high-strength reinforced concrete pipe culvert and a preparation method thereof. The preparation method includes the steps that firstly, shell calcined matter is soaked into activation liquid, and then activated shell calcined matter is obtained through filtering, drying and screening; secondly, cement, the activated shell calcined matter, pebbles, sand, coal ash and water are mixed so that concrete can be prepared; thirdly, the concrete is poured into a reinforcement cage, and then the high-strength reinforced concrete pipe culvert is prepared through curing, wherein the activation liquid comprises water, hydrochloric acid, sulfurous acid and dimercaprol dimercaptopropanol. The high-strength reinforced concrete pipe culvert prepared through the method has excellent fracture load and failure load indexes.
Owner:ANHUI YUTE CONCRETE STRUCTURE TECH
Antibacterial and flame-retardant modified glass cement and preparation method thereof
ActiveCN109880574AImprove bindingIncrease the amount of bindingNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesToluene diisocyanate1-Propanol
The invention discloses an antibacterial and flame-retardant modified glass cement. The antibacterial and flame-retardant modified glass cement comprises, by weight, 46-51 parts of a diamino flame-retardant monomer, 76-84 parts of a diacylchloro monomer, 13-14 parts of tetramethylammonium fluoride, 18-20 parts of 2,3-dimercapto-1-propanol, 8-10 parts of triethylamine, 26-29 parts of toluene diisocyanate, 4.8-4.9 parts of a silver nitrate solution having a concentration of 10 mg / g, and a proper amount of water. The glass cement prepared in the invention is solid and portable; and when the glasscement is used, the deprotonation effect of the triethylamine directly precipitates silver thiolate to form an ionic complex can be dissolved in order to form a viscous colloid, and the viscous colloid can then be used directly, so the problem that existing glass cements are colloid, needs to be stored in a sealing manner, and are prone to coagulate and affect the bonding property after being opened and remained is solved.
Owner:广东华成新材料有限公司
Preparation method of dimercaprol modified magnetic porous cotton composite microspheres
InactiveCN107583631AGood physical and chemical stabilityHigh mechanical strengthOther chemical processesWater contaminantsMicrosphereSilanes
The invention discloses a preparation method of dimercaprol modified magnetic porous cotton composite microspheres. The preparation method is characterized by comprising the following steps: firstly,dissolving absorbent cotton and glucan in 1-ethyl-3-methylimidazole thiocyanate to prepare magnetic porous cotton composite microspheres; then, carrying out surface amination on the magnetic porous cotton composite microspheres by the use of gamma-aminopropyl trimethoxy silane to obtain aminated magnetic porous cotton composite microspheres; and finally, adding the following ingredients accordingto the following mass percentage concentrations in a reactor: 68-74% of ethanol and 10-16% of dimercaprol; stirring and dissolving; adding 12-18% of the aminated magnetic porous cotton composite microspheres, stirring at constant temperature of 50+ / - 2 DEG C and carrying out reflux reaction for 3 h, cooling, washing with ethanol, carrying out solid-liquid separation and drying to obtain the dimercaprol modified magnetic porous cotton composite microspheres. The adsorbent has high adsorption capacity of arsenic and mercury, is low-cost and environmentally-friendly, has high mechanical strength,can be repeatedly used for more than 10 times, and is easy to separate.
Owner:UNIV OF JINAN
Method for resolution of 2,3-dimercapto propanol raceme
InactiveCN103387525AAccurate medicationMedication healthOrganic chemistryOrganic compound preparationSolubilitySolvent
The invention provides a method for resolution of 2,3-dimercapto propanol raceme. The method includes 1) reacting the 2,3-dimercapto propanol raceme with a first chiral resolving agent in a chiral solvent; 2) adding a second chiral resolving agent into a mixed solution obtained by the step 1) to make the 2,3-dimercapto propanol raceme form two chiral salts with different solubility; and 3) separating the two chiral salts with different solubility through a crystallization method, and respectively carrying out acidification treatment to obtain 2,3-dimercapto propanol optically-active isomers which are separated from each other. The optical activity of the first chiral resolving agent is opposite to that of the chiral solvent, the optical activity of the second chiral resolving agent is same with that of the chiral solvent, and the first chiral resolving agent is 3-methyl-2-butylamine and the second chiral resolving agent is an alkali metal salt of a fatty alcohol. Through chiral resolution of a drug, drug use of people can be more accurate and healthy.
Owner:NEW FOUNDER HLDG DEV LLC +2
Method for treating circulating cooling water of high-speed trains
InactiveCN109516575AEffective corrosion controlEasy to handleSpecific water treatment objectivesScale removal and water softeningHydroxylamine HydrochlorideCopolymer
The invention relates to the field of circulating water treatment, and provides a method for treating circulating cooling water of high-speed trains. The method comprises the step of adding scale andcorrosion inhibitor and a compound complexing agent into high-speed train circulating cooling water, wherein the scale and corrosion inhibitor is prepared from organic phosphorous and copolymer, and the compound complexing agent is selected from at least two of dimercaprol dimercaptopropanol, tartaric acid, tartrate, triethanolamine, citric acid, citrate, ethylene diamine tetraacetic acid, hydroxylamine hydrochloride, sodium gluconate and sodium alginate. The treatment method can reduce the corrosion speed of cooling water for carbon steel to the grade of 'very good' or 'good' for carbon steelcorrosion speed specified in the cooling water analysis and test method; and furthermore, the method can avoid the process of replacing circulating cooling water in the system with a great number offresh water to control corrosion in the prior art, is quick, efficient, safe and reliable, and is suitable for quick treatment of a high-speed train circulating water system.
Owner:CHINA PETROLEUM & CHEM CORP +1
Soil repairing agent used for soil polluted by chromium, cadmium and arsenic and preparation method thereof
InactiveCN105419814AOrganic fertilisersSoil conditioning compositionsArsenic pollutionPhosphoric acid
The invention provides a soil repairing agent used for soil polluted by chromium, cadmium and arsenic and a preparation method thereof. The soil repairing agent is composed of, by weight, 20-30 parts of dimercaptopropanol, 9-16 parts of cobalt ferrite, 7-15 parts of bismuth phosphate, 2-5 parts of tungsten oxide, 5-14 parts of hexahydroxyl sodium antimonate, 3-10 parts of sepiolite, 4-12 parts of oxidized sophocarpine, 3-9 parts of calcium chloride, 5-10 parts of potassium citrate, 2-7 parts of 1,3-dione, 6-13 parts of palmitic acid, 5-17 parts of diatomite, and 8-15 parts of glucono-[delta]-lactone. The soil repairing agent can reduce the concentration of chromium to lower than 18.7 mg / kg, the concentration of cadmium to lower than 23.6 mg / kg and the concentration of arsenic to lower than 21.9 mg / kg in polluted soil when being used for repairing soil. Heavy metal concentration of the repaired soil satisfies the demand of national grade-II soil quality standard.
Owner:JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
Method for eliminating bismuth interference in determination of lead content of mineral by EDTA (ethylenediaminetetraacetic acid) volumetric method
InactiveCN105784919AEliminate distractionsSimple methodChemical analysis using titrationAcetic acidLead acetate
The invention discloses a method for eliminating bismuth interference in the determination of lead content of a mineral by EDTA (ethylenediaminetetraacetic acid) volumetric method. The method using the mineral as a specimen includes the steps of specimen digesting, acid driving, lead sulfate precipitate forming, lead sulfate precipitate dissolving, and titrating. The method is differed from the prior art in that before titrating lead acetate solution obtained in the step of lead sulfate precipitate dissolving, 2,3-dimercaprol is added; the 2,3-dimercaprol is used to react with bismuth to generate a substance with a stability constant higher than that of Bi-EDTA, the interference due to the presence of bismuth in the determination of lead content of the mineral by EDTA volumetric method is effectively eliminated accordingly, and the method is simple and quick, has reliable results and can meet the production analytical requirement.
Owner:CHINA NONFERROUS METAL (GUILIN) GEOLOGY & MINING CO LTD
Bismuth molybdate photocatalyst for heavy metal wastewater treatment and preparation method
InactiveCN108311135AImprove adsorption capacityWidely suitable for handlingMaterial nanotechnologyWater/sewage treatment by irradiationMolybdateLight energy
The invention discloses a bismuth molybdate photocatalyst for heavy metal wastewater treatment and a preparation method. The bismuth molybdate photocatalyst is prepared by the following steps: a, adding bismuth nitrate pentahydrate, hepta-molybdate tetrahydrate, glycol ammonium and dimercaptopropanol to a reaction kettle, adjusting the pH value to be 8.5-9.5, and performing mixing and stirring toobtain reaction liquid; and b, putting the reaction kettle into a microwave reactor for reacting to obtain a dimercaptopropanol modified bismuth molybdate photocatalyst, namely the bismuth molybdate photocatalyst for heavy metal wastewater treatment. The method has the following beneficial effects that by utilizing a good adsorption property of dimercaptopropanol to heavy metal ion mercury, the modified molybdate photocatalyst has an adsorption capacity to heavy metal ion mercury and is high in light energy utilization ratio, good in photocatalysis activity, high in catalytic reduction and degradation capacity, widely suitable for treatment of toxic and harmful heavy metal ion mercury in water and broad in application prospect.
Owner:CHENDU NEW KELI CHEM SCI CO LTD
A thiosulfate silver plating additive, its preparation method and its electroplating solution
Owner:NANJING INST OF PROD QUALITY INSPECTION
High-toughness ceramic material based on nano kieselguhr and preparation method of high-toughness ceramic material
The invention discloses a high-toughness ceramic material based on nano kieselguhr and a preparation method of the high-toughness ceramic material. The high-toughness ceramic material is prepared from, by weight, 35-45 parts of nano titanium carbide, 30-40 parts of nano titanium nitride, 25-35 parts of nano silicon carbide, 5-15 parts of montmorillonite powder, 5-15 parts of modified nano kieselguhr, 8-12 parts of deionized water, 6-10 parts of polyethylene glycol, 3-5 parts of silane coupling agent KH560 and 2-4 parts of acrylamide. A method for preparing the modified nano kieselguhr comprises the steps that after 60-80 parts by weight of nano kieselguhr is placed in a 20%-30% by mass of triethylamine solution to be soaked for 3-5 hours, the nano kieselguhr is taken out to be washed to be neutral and is dried at the temperature of 50 DEG C to 60 DEG C till the water content ranges from 3% to 5%; 4-6 parts of triethanolamine is added, the materials are mixed to be uniform, then 3-5 parts of dimercaprol dimercaptopropanol and 1-3 parts of nano graphite powder are added, mixing and grinding are carried out, the materials pass through a 200-mesh screen, and the modified nano kieselguhr is obtained. The ceramic material is high in hardness, strength and toughness, and the preparation method is simple.
Owner:谢秋敏
Thiosulfate silvering additive, preparation method thereof and electroplate liquid containing same
The invention discloses a thiosulfate silvering additive, a preparation method thereof and electroplate liquid containing the same. The thiosulfate silvering additive comprises 12-18 g / L of lauryl sodium sulfate, 3-5 g / L of polyethylene glycol, 10-13 g / L of nitrogen mustard, 5-10 g / L of cumin, 250-350 g / L of 1,10-phenanthroline monohydrate, 50-100 g / L of dimercaprol dimercaptopropanol, 50-100 g / Lof mercaptoethylamine, 100-150 g / L of ethylene glycol tetraacetic acid (EGTA) and the balance water. The additive provided by the invention enables the dispersity, the stability and the electroplatingperformance of the electroplate liquid to be quite remarkably improved, the pH value does not need to be adjusted repeatedly in the electroplating process, meanwhile, the performance including the smoothness, the adhesive force, the glossiness, the anti-tarish performance and the like of a silvering coating are remarkably improved, the thickness of the coating is further reduced, and phenomena such as fracturing do not exist; and the electroplate liquid provided by the invention does not contain cyanide, the mirror surface of the coating is bright, small in brittleness, good in adhesive force, flat in surface, bright, good in anti-tarish performance and high in heat resistance, application to the multiple fields of decorative electroplating, functional electroplating and the like can be achieved, preplating is not needed, and the bonding force can also be guaranteed.
Owner:NANJING INST OF PROD QUALITY INSPECTION
4,4'-dimercaprol azobenzene and preparation method thereof
The invention discloses 4,4'-dimercaprol azobenzene and a preparation method thereof and relates to an azo sulfhydryl compound. The molecular formula of the 4,4'-dimercaprol azobenzene is HS(C6H4)N=N(C6H4)SH. The method comprises the following steps of: dissolving aniline into an aqueous sodium bicarbonate solution; adding I2 for reacting, then decompressing and pumping off the solvent to obtain 4-m-iodoaniline; dissolving the 4-m-iodoaniline into glacial acetic acid, adding NaBO3-4H2O and H3BOs for reacting, and then recrystallizing by using THF (Tetrahydrofuran) to obtain 4,4'-azobenzene diiodide; dissolving the 4,4'-azobenzene diiodide into the THF, adding an obtained mixed solution to magnesium chips in batches, and then cooling to obtain an azobenzene Grignard reagent; adding solid sulphur powder to the azobenzene Grignard reagent in batches and heating for reacting to obtain a vulcanized product; cooling and then adding an NH4Cl solution; acidizing by using hydrochloric acid and extracting through dichloromethane; combining organic phases, drying and filtering; decompressing to evaporate out the solvent to obtain a crude product; and extracting by using alcohol, and evaporating the solvent to dryness to obtain a product.
Owner:XIAMEN UNIV
Dimercaprol fat emulsion injection
ActiveCN105193722BSulfur/selenium/tellurium active ingredientsAntinoxious agentsGlycerolFat emulsions
The present invention relates to a dimercaprol fat emulsion injection, which is composed of the following components: 1-10 grams of dimercaprol, 20-50 grams of soybean oil, 10-40 grams of lecithin, 4-10 grams of glycerin, EDTA1 ‑10 grams, 850‑990 grams of water for injection.
Owner:FUBICHENG SHANGHAI PHARMA TECH CO LTD
Sodium fusidate freeze-dried powder injection and preparation method thereof
ActiveCN103169673BThe test result data is highImprove stabilityAntibacterial agentsPowder deliveryFreeze-dryingArginine
The invention relates to the field of pharmaceutical preparation, and particularly discloses sodium fusidate freeze-dried powder injection and a preparation method thereof. The sodium fusidate freeze-dried powder injection disclosed by the invention is prepared from sodium fusidate, dimercaprol dimercaptopropanol, erythorbic acid, cysteine hydrochloride, phenylalanine, arginine and injection water in a freeze-drying manner. Preferably, the arginine, the dimercaprol dimercaptopropanol, erythorbic acid, cysteine hydrochloride and phenylalanine are taken as auxiliary materials of the sodium fusidate freeze-dried powder injection; stable performance of the sodium fusidate freeze-dried powder injection is improved by synergistic effect; the content of related substances is reduced; the characters of a product are maintained in a normal requirement; and safe use and long-term storage of clinical drugs are facilitated.
Owner:SHANDONG LUOXIN PHARMA GRP CO LTD
Catalyst for removing indoor formaldehyde and preparation method thereof
InactiveCN106902796AStrong adhesionLow costPhysical/chemical process catalystsAluminium chloridePOLYOXYETHYLENE ETHER
The invention relates to the chemical field, and particularly relates to a catalyst for removing indoor formaldehyde and a preparation method thereof. The catalyst comprises, by weight, 35 to 45 parts of nano titanium dioxide, 6 to 10 parts of octaphenyl polyoxyethyiene, 6 to 10 parts of benzene, 4 to 8 parts of hydrogen peroxide, 4 to 5 parts of dimercaprol, 2 to 3 parts of DTPMP, 0.5 to 1 part of malonic acid, 0.5 to 1 part of aluminium chloride and the balancing being pure water. The catalyst quickly penetrates into the plate after being sprayed directly on the plate surface, the adhesive force is strong, and under the effects of the catalysis of titanium dioxide and other auxiliaries, the catalyst is capable of rapidly and effectively degrading indoor noxious substances including formaldehyde, benzene, toluene, dimethylbenzene, ammonia and total volatile organic compounds(TVOC). The catalyst has the advantages of low cost, strong adhesive force, good catalyst activity and long efficacy.
Owner:中星浩渺(广东)环保科技有限公司
Method for treating circulating cooling water of high-speed trains
InactiveCN109516577AEffective corrosion controlEasy to handleSpecific water treatment objectivesScale removal and water softeningHydroxylamine HydrochlorideCopolymer
The invention relates to the field of circulating water treatment, and provides a method for treating circulating cooling water of high-speed trains. The method comprises the step of adding scale andcorrosion inhibitor and a compound complexing agent into high-speed train circulating cooling water, wherein the scale and corrosion inhibitor is prepared from organic phosphorous and copolymer, and the compound complexing agent is selected from at least three of dimercaprol dimercaptopropanol, tartaric acid, tartrate, triethanolamine, citric acid, citrate, ethylene diamine tetraacetic acid, hydroxylamine hydrochloride, sodium gluconate and sodium alginate. The treatment method can effectively control corrosion of high-speed train circulating cooling water, enables the corrosion speed of cooling water for carbon steel to be reduced to the grade of 'good' for carbon steel corrosion speed specified in the cooling water analysis and test method; and furthermore, the method can avoid the process of replacing circulating cooling water in the system with a great number of fresh water to control corrosion in the prior art, is quick, efficient, safe and reliable, and is suitable for quick treatment of a high-speed train circulating water system.
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of synthetic method of epoxy resin of many epoxy groups
ActiveCN109970951BHigh reactivityImprove hydrolysis resistanceOrganic chemistryPropanolPolymer science
The invention discloses a polyepoxy group epoxy resin and a preparation method thereof. The method puts the raw materials allyl glycidyl ether and 2,3-dimercapto-1-propanol in a reactor, and adds a photoinitiator and a solvent, and reacts 1-12 under ultraviolet light irradiation in an ice-water bath hour; then add isocyanate compound to the above reaction solution and react at 65°C for 0.5 to 24 hours, remove the solvent after the reaction, and vacuum dry to obtain a polyepoxy epoxy resin. The preparation method provided by the invention is simple and efficient, the reaction conditions are mild, and the synthesis process is environmentally friendly.
Owner:YANTAI UNIV
A kind of preparation method of dimercaptopropanol modified magnetic porous cotton composite microsphere
InactiveCN107583631BGood physical and chemical stabilityHigh mechanical strengthOther chemical processesWater contaminantsMetallurgyMicrosphere
The invention discloses a preparation method of dimercaprol modified magnetic porous cotton composite microspheres. The preparation method is characterized by comprising the following steps: firstly,dissolving absorbent cotton and glucan in 1-ethyl-3-methylimidazole thiocyanate to prepare magnetic porous cotton composite microspheres; then, carrying out surface amination on the magnetic porous cotton composite microspheres by the use of gamma-aminopropyl trimethoxy silane to obtain aminated magnetic porous cotton composite microspheres; and finally, adding the following ingredients accordingto the following mass percentage concentrations in a reactor: 68-74% of ethanol and 10-16% of dimercaprol; stirring and dissolving; adding 12-18% of the aminated magnetic porous cotton composite microspheres, stirring at constant temperature of 50+ / - 2 DEG C and carrying out reflux reaction for 3 h, cooling, washing with ethanol, carrying out solid-liquid separation and drying to obtain the dimercaprol modified magnetic porous cotton composite microspheres. The adsorbent has high adsorption capacity of arsenic and mercury, is low-cost and environmentally-friendly, has high mechanical strength,can be repeatedly used for more than 10 times, and is easy to separate.
Owner:UNIV OF JINAN
Antibacterial flame retardant modified glass glue and preparation method thereof
ActiveCN109880574BImprove flame retardant performanceEvenly dispersedNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPropanolPolymer science
Owner:广东华成新材料有限公司
High-strength and high-toughness ceramic composite and preparation thereof
The invention discloses a high-strength and high-toughness ceramic composite and preparation thereof. The ceramic composite is prepared from raw materials in parts by weight as follows; 35-45 parts of nano titanium carbide, 30-40 parts of nano titanium nitride, 25-35 parts of nano silicon carbide, 5-15 parts of calcite powder, 5-15 parts of modified nano illite, 8-12 parts of deionized water, 6-10 parts of mineral oil, 3-5 parts of a saline coupling agent KH560 and 2-4 parts of fumaric acid; a preparation method of the modified nano illite comprises steps as follows: 60-80 parts of nano illite by weight are placed in a glacial acetic acid solution with the mass fraction being 20%-30% to be soaked for 3-5 h, taken out, washed to be neutral and dried at 50-60 DEG C until the moisture content is 3%-5%; 4-6 parts of castor oil are added and evenly mixed, 3-5 parts of dimercaprol and 1-3 parts of nano graphite powder are added, mixing and grinding are performed, and the mixture is sieved by a 200-mesh sieve, and the ceramic composite is prepared. The ceramic composite has high hardness, strength and toughness, and the preparation method is simple.
Owner:江西新宏信陶瓷有限公司
Curing agent prepared from TMPTA production wastewater and method of curing agent
The invention discloses a curing agent prepared from TMPTA production wastewater. The curing agent is prepared from the following raw materials in parts by weight: 50-80 parts of TMPTA industrial wastewater, 10-15 parts of 4-acetamidosalicylic acid, 3-8 parts of L-cysteine, 8-12 parts of salicylic acid-2-ethyl hexyl ester, 6-10 parts of ethyl acetate, 9-14 parts of 5-nitrofurfural diacctate, 3-6 parts of 2-thiophenecarboxaldehyde, 4-8 parts of eugenol, 2-5 parts of 5-hydroxytryptamine and 7-12 parts of dimercaprol. The curing agent with excellent performance is prepared by adding multiple organic chemical components to production wastewater of trihydroxymethyl propane triacrylate (TMPTA) after simple concentration.
Owner:SUZHOU DINGYU ENERGY EFFICIENT EQUIP
Determination method of magnesium content in aluminum alloy
InactiveCN103558217BThe measurement result is accurateClear end pointMaterial analysis by observing effect on chemical indicatorRare-earth elementPollution
The invention relates to a method for measuring the content of a magnesium element in an aluminum alloy. A compound masking reagent adopts a triethanolamine solution of iminodisuccinic acid, dimercaprol and tetrasodium glutamate diacetate, and triethanolamine reacts with Al<3+> and Fe<3+> to obtain a stable complex under an acidic environment, the formed complex is colorless and easily soluble, the iminodisuccinic acid and Cu<2+>, Ca<2+> and Zn<2+> form a stable complex; tetrasodium glutamate diacetate is strong in complexing power with rare earth element ions; dimercaprol is strong in complexing power with nickel and manganese ions, and is poor in complexing power with other ions. Thus, the compound masking reagent formed by multiple components is used for performing complexing masking on each element except for the manganese ions in the aluminum alloy in a targeted manner, and thus the detection accuracy is improved. The method for measuring the content of the magnesium element in the aluminum alloy, provided by the invention, is accurate in measuring result, and remarkable in end point, and has the environmental-friendly effects in the used reagent without pollution.
Owner:淄博市新材料研究所
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