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38 results about "Dibutyltin dichloride" patented technology
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PMC (Polymer-matrix composite) radiation-proof resin lens and manufacturing process thereof
The invention relates to a PMC (polymer-matrix composite) radiation-proof resin lens, comprising the following components in percentage by weight:47-50% of a first mixture, 50-53% of a second mixture, 0.05-0.10% of an ultraviolet absorbent, 0.045-0.055% of a blue organic pigment, 0.025-0.035% of a red organic pigment, 0.04-0.07% of a mold releasing agent, and 0.06-0.10% of dibutyltin dichloride. By adopting the PMC radiation-proof resin lens, the visual field aberration caused by edge dispersion of a substrate can be greatly improved, the image sharpness is improved, and the shock resistance passes through and surpasses an FDA (Food and Drug Administration) shock resistance safety certification of America, so that the safety for wearing the resin lens is greatly improved.
Owner:JIANGSU MINGYUE PHOTOELECTRICS TECH
Ultrafine dibutyltin oxide and preparation method thereof
ActiveCN106008588AFine and uniform particlesLow concentration of soluble ionsTin organic compoundsElectrophoresisDibutyltin dichloride
The invention relates to an ultrafine dibutyltin oxide and a preparation method thereof, and belongs to the technical field of preparation of ultrafine powder catalysts. The preparation method concretely comprises the following steps: 1, heating dibutyltin dichloride to a certain temperature in order to liquefy dibutyltin dichloride , and introducing the liquefied dibutyltin dichloride to an atomizer; 2, starting the atomizer to atomize the liquid dibutyltin dichloride ; 3, spraying atomized dibutyltin dichloride flow into a reaction kettle equipped with an alkali liquid, fully mixing the flow with the alkali liquid, and carrying out a primary reaction; 4, separating the obtained liquid after the primary reaction ends, adding the alkali liquid, carrying out a secondary reaction, and carrying out a tertiary reaction; and 5, washing a material obtained in step 4 with water, centrifuging the washed material, carrying out vacuum drying, discharging the dried material, and weighing the discharged material to obtain the required ultrafine dibutyltin oxide product. Ultrafine dibutyltin oxide synthesized through the method is fine and uniform, has high purity, and can be used as an electrophoresis paint catalyst.
Owner:云南锡业锡化工材料有限责任公司
Synthesis method of dibutyltin dilaurate
InactiveCN102838631AEliminate the step of hydrolysisNothing producedTin organic compoundsOrganic synthesisDibutyltin oxide
The invention discloses a synthesis method of dibutyltin dilaurate, belonging to the field of organic synthesis. The synthesis method comprises the following steps of: 1, adding lauric acid, dibutyltin dichloride and ethanol into a reactor with a condenser pipe, heating and stirring mixed solution in the reactor, dropping sodium ethoxide-ethanol solution when temperature reaches 50-60DEG C; 2, after the sodium ethoxide-ethanol solution is completely dropped, maintaining the temperature, turning on a cooling water tap after reaction, starting to vacuumize, evaporating ethanol solvent, and stopping vacuumizing and heating when the temperature of the mixed solution in the reactor again reaches 70DEG C and no liquid is distilled off; and 3, conducting separation. By adopting the method of evenly mixing the dibutyltin dichloride instead of dibutyltin oxide with the lauric acid and then dropping sodium ethoxide-ethanol solution to prepare the dibutyltin dilaurate, the step of hydrolyzing dibutyltin dichloride in caustic soda solution is omitted, toxic dust and wastewater are not produced, the environmental and personal health is promoted and water resources are saved.
Owner:沧州威达化工股份有限公司
Synthetic method for preparing dibutyltin dilaurate
InactiveCN104672276AEmission reductionEliminate the alkalization processTin organic compoundsDibutyltin dichlorideWastewater
The invention discloses a synthetic method for preparing dibutyltin dilaurate. The synthetic method comprises the following step: by taking lauric acid and dibutyltin dichloride as raw materials, performing synthetic reaction under the action of a solvent under the condition that a molar ratio of lauric acid to dibutyltin dichloride is 2:1. The synthetic method is characterized in that a catalyst is also added in a synthetic process, wherein the catalyst is any one or a mixture of any two of tripropylamine, triethylamine and dipropyl amine, or is a mixture of tripropylamine, triethylamine and dipropyl amine. According to the synthetic method for preparing dibutyltin dilaurate disclosed by the invention, dust raw materials are not involved, an alkalization process can be eliminated, washing wastewater can be recycled, and the discharge quantity of wastewater can be reduced; the cyclic utilization efficiency can be improved, and the production cost can be reduced; and moreover, the synthetic method is simple in production equipment, ensures that reaction and separation can be completed by using a single kettle (reactor), and ensures that the cost can be saved.
Owner:JIANGSU XINLU CHEM NEW MATERIAL
Low temperature resistant silicone rubber material and preparation method thereof
InactiveCN104312154AImprove performanceImprove low temperature resistanceRubber materialPolymer science
The invention discloses a low temperature resistant silicone rubber material and a preparation method thereof. The rubber material consists of the following raw materials by weight: 90-110 parts of low phenyl silicone rubber, 40-60 parts of diethyl silicone rubber, 5-10 parts of triallyl cyanurate, 3-6 parts of tetraethylene glycol, 10-15 parts of yellow mud powder, 5-10 parts of hydroxyl terminated polybutadiene, 2-3 parts of dibutyltin dichloride, 1.5-2.5 parts of polycarbodiimide, 3-5 parts of trimethylolpropane cocoate, 4-8 parts of polyether epoxy modified silicone oil, 2.5-4.5 parts of erucyl amide, 5-10 parts of diisobutyl ester of nylon acids, 10-15 parts of triethylene glycol di-2-ethylhexoate(triglycol dioctate), 12-16 parts of basic magnesium sulfate whisker, 2-3 parts of 4,4-dityrenated diphenylamine, 1-2 parts of tetramethylthiuram disulfide and 3.5-4.5 parts of an assistant. The silicone rubber product provided by the invention has stable performance and excellent resistance to low temperature performance, and can work in cold conditions over a long period of time and still keep high tensile strength, tear strength and high elongation at break; and the silicone rubber material has good aging resistance, fatigue resistance and oil resistance, fully meets the usage requirements of cold areas in northern China, and shows broad application prospect.
Owner:天长市荣盛有机硅科技有限公司
Blue light-resistant polymer resin lens and preparation method thereof
InactiveCN109188717AReduce intensityAnti blue lightEpoxy resin coatingsOptical partsPolymer scienceSilicon dioxide
The invention provides a blue light-resistant polymer resin lens comprising a lens main body and a coating layer arranged at the outer part of the lens main body; the lens main body contains the raw material components in percentage by weight: 15%-25% of dibutyl phthalate, 5%-20% of propenol, 30%-50% of isocyanate, 0.002%-0.05% of dibutyltin dichloride, 0.06%-0.1% of photocuring initiator and thebalance of methyl styrene; and the coating layer contains the following raw material components in percentage by weight: 45-55% of bisphenol A epoxy acrylate, 1-5% of tri(propyleneglycol)diacrylate, 1-5% of sodium benzoate, 0.05-3% of silicon dioxide, 0.05-3% of titanium dioxide and the balance of deionized water. The blue light-resistant polymer resin lens is capable of effectively resisting to blue light and reducing the strength of a high beam.
Owner:江苏硕延光学眼镜有限公司
Method for detecting residuals of 13 organotin compounds in food
InactiveCN110231420AHigh degree of automationEasy to separateComponent separationDibutyltin dichlorideMass Spectrometry-Mass Spectrometry
The invention discloses a method for detecting residuals of 13 organotin compounds in food, and aims at detecting the 13 organotin compounds in the food. The 13 organotin compounds are methyltin trichloride, monobutyltin trichloride, monooctyltin trichloride, dimethyltin dichloride, di-n-propyltin-dichloride, dibutyltin dichloride, diphenyltin dichloride, dioctyltin dichloride, tributyltin monochloride, triphenyltin monochloride, tricyclohexyltin monochloride, trioctyltin monochloride and tetrabutyltin. The method comprises the steps of carrying out sampling; carrying out pretreatment; and carrying out gas chromatograph-mass spectrometer GC-MS measurement on the pretreated target object. The method fills the gaps in the technical field of food detection and the low detection limit can be up to 0.06 mg / kg; the adopted gas chromatograph-mass spectrometer GC-MS combines the high separation ability of the chromatography and the high selectivity and high sensitivity of the mass spectrometry, so that the correctness of micro and trace measurement is ensured; and the method is high in automation degree and is capable of simplifying the operation and improving the working efficiency of thedetection and the working quality of the analysis and test.
Owner:珠海天祥粤澳质量技术服务有限公司
Tread rubber for carbon nano tube composite high-performance tire and application thereof
ActiveCN106928518AGood dispersionAvoid reunionSpecial tyresRolling resistance optimizationEnvironmental resistanceRolling resistance
The invention discloses tread rubber for a carbon nano tube composite high-performance tire. The tread rubber is prepared from, by weight, 100 parts of environment-friendly regeneration rubber, 50-60 parts of carbon nano tube rubber master batch, 40-60 parts of pyrolysis carbon black, 80-100 parts of natural rubber, 15-25 parts of zinc oxide, 8-12 parts of dibutyltin dichloride, 5-9 parts of coupling agent and 8-12 parts of a vulcanizing agent. The invention further discloses application thereof for a high-performance tire tread. The excellent nano tube excellent performance advantage is brought into play, the production cost of the tire is effectively lowered, the tread rubber has the advantages of being high in abrasion resistance and heat conductivity coefficient, low in rolling resistance and endurance thermogenesis, and low in production cost. The tread rubber for the carbon nano tube composite high-performance tire is free from extraneous odor, does no harm to the human body, remarkably improves the various performances, can be used for producing the high-performance rubber, is safe and environmentally friendly, and has the wide market prospect.
Owner:山东宝力科技有限公司
Preparation method of monobutyltin oxide
The invention provides a preparation method of monobutyltin oxide. The method includes the steps of firstly, adding tetrabutyl tin into a reactor, evenly stirring, slowly dropwise adding tin tetrachloride, then stirring for 30 minutes, heating to 140 DEG C, and performing heat-preservation reaction for 4-8 hours to obtain the mixed solution of monobutyltin trichloride and dibutyltin dichloride; secondly, heating the mixed solution of the monobutyltin trichloride and the dibutyltin dichloride to 95-100 DEG C, and collecting the monobutyltin trichloride; thirdly, adding the monobutyltin trichloride collected in the second step, surfactant and an organic solvent into a reactor, evenly stirring, slowly dropwise adding a sodium hydroxide solution, then heating to 90 DEG C, performing heat-preservation reaction for 3.5-4 hours, cooling to room temperature, filtering to obtain crude monobutyltin oxide, washing the crude monobutyltin oxide until the crude monobutyltin oxide is neutral, and performing reduced-pressure drying at 80 DEG C for 12 hours to obtain the monobutyltin oxide, wherein the surfactant is chitosan modified imidazoline ampholytic surfactant and quaternized polyvinyl alcohol.
Owner:启东市强强贸易有限公司
Preparation method of granular dibutyltin oxide
ActiveCN101665510BReduce operating intensityIncrease production capacityTin organic compoundsDibutyltin oxideDibutyltin dichloride
The invention relates to a preparation method of an organotin product, in particular to a preparation method of granular dibutyltin oxide, belonging to the field of the chemical engineer. The method comprises the following steps: adding sodium hydroxide solution, neutralizer and surfactant in a reaction tank, heating the mixture to the initial temperature of the alkaline hydrolysis reaction, then dropwise adding dibutyltin dichloride solution while controlling the adding speed to 15-25kg / min, then performing the alkaline hydrolysis reaction under the temperature of the alkaline hydrolysis reaction to obtain dibutyltin oxide and finally obtaining the pure white granular dibutyltin oxide through water washing, filtrating and vacuum drying. The invention is characterized by high efficiency, controllable reaction and high purity and yield, the prepared product is granular, the purity of the prepared dibutyltin oxide is not less than 99%, and the yield of dibutyltin oxide which is synthesized by adopting dibutyltin dichloride as starting raw material is not less than 98%.
Owner:云南锡业锡化工材料有限责任公司
Method for recovering and utilizing tributyl tin chloride
PendingCN109824716AFully recycleBig difference in melting pointTin organic compoundsTetrachlorideDibutyltin dichloride
The invention discloses a method for recovering and utilizing tributyl tin chloride. The method comprises following steps: (1) heating and distilling tributyl tin chloride with a weight content less than 80% in a hydrogen chloride atmosphere with a high vacuum degree of 20 Pa, wherein the final temperature is 140 to 160 DEG C; (2) after vacuum distillation, mixing obtained tributyl tin chloride product with tin tetrachloride, carrying out reactions at a controlled temperature to obtain a mixture composed of monobutyl tin trichloride and dibutyl tin dichloride; and (3) distilling and separatingthe mixture obtained in the step (2) to obtain monobutyl tin trichloride and dibutyl tin dichloride. The method has the advantages that the difference between the melting points of monobutyl tin trichloride and dibutyl tin dichloride is large, thus the separation is easy, the generated wastes are little, the production is easy, monobutyl tin trichloride and dibutyl tin dichloride can be individually sold, and the waste tributyl tin chloride catalysts are fully recovered and utilized.
Owner:南通濠泰化工产品有限公司
Composition for optical material
ActiveCN103282399AInhibition of uneven polymerizationInhibitionOptical elementsDibutyltin dichlorideSulfur
Owner:MITSUBISHI GAS CHEM CO INC
Composition for optical material
InactiveUS20130267673A1Inhomogeneous suppressionInhibitionOptical elementsDibutyltin dichlorideCyanate compound
The present invention relates to a composition for an optical material, which is capable of suppressing occurrence of polymerization unevenness called striae, in particular, striae to be caused in high-powered lenses with sharp curves, and more specifically relates to a composition for an optical material including: a polymerization catalyst having a mass ratio of dibutyltin dichloride to monobutyltin trichloride of 97.0 / 3.0 to 100.0 / 0.0; a polythiol compound; and a polyiso(thio)cyanate compound.
Owner:MITSUBISHI GAS CHEM CO INC
Preparation method of dibutyltin dilaurate
PendingCN109824718AHigh salt contentEasy to handleTin organic compoundsDibutyltin dichlorideWastewater
The invention discloses a preparation method of dibutyltin dilaurate. The preparation method comprises following steps: (1) adding dibutyltin dichloride and lauric acid into a reactor, and fully mixing dibutyltin dichloride and lauric acid; (2) dropwise adding a sodium hydroxide solution into the mixture of dibutyltin dichloride and lauric acid during the mixing process; (3) after the addition ofthe sodium hydroxide solution, fully carrying out reactions, and allowing the system to stand still to carry out layering; and (4) separating and discharging the upper layer namely dibutyltin dilaurate. The preparation method has the advantages that the heat generated by alkaline hydrolysis of dibutyltin dichloride is fully utilized, thus the energy consumption is effectively reduced, the synthesis cost is reduced, moreover, the salt content of generated wastewater in one step reaction is high, the wastewater is easy to process; a mixture of lauric acid and coconut acid is taken as the reaction raw material, has a low melting point, and is easy to feed in autumn and winter; the excess unreacted raw material is easy to separate, and the preparation cost is effectively reduced.
Owner:南通濠泰化工产品有限公司
Synthesis method of dibutyltin dilaurate
InactiveCN102838631BEliminate the step of hydrolysisSave waterTin organic compoundsOrganic synthesisDibutyltin oxide
The invention discloses a synthesis method of dibutyltin dilaurate, belonging to the field of organic synthesis. The synthesis method comprises the following steps of: 1, adding lauric acid, dibutyltin dichloride and ethanol into a reactor with a condenser pipe, heating and stirring mixed solution in the reactor, dropping sodium ethoxide-ethanol solution when temperature reaches 50-60DEG C; 2, after the sodium ethoxide-ethanol solution is completely dropped, maintaining the temperature, turning on a cooling water tap after reaction, starting to vacuumize, evaporating ethanol solvent, and stopping vacuumizing and heating when the temperature of the mixed solution in the reactor again reaches 70DEG C and no liquid is distilled off; and 3, conducting separation. By adopting the method of evenly mixing the dibutyltin dichloride instead of dibutyltin oxide with the lauric acid and then dropping sodium ethoxide-ethanol solution to prepare the dibutyltin dilaurate, the step of hydrolyzing dibutyltin dichloride in caustic soda solution is omitted, toxic dust and wastewater are not produced, the environmental and personal health is promoted and water resources are saved.
Owner:沧州威达化工股份有限公司
Polyvinyl chloride and polyethylene composite modified plastic
InactiveCN103740000AIncrease stiffnessHigh mechanical strengthWeather resistanceDibutyltin dichloride
The invention discloses polyvinyl chloride and polyethylene composite modified plastic. The polyvinyl chloride and polyethylene composite modified plastic comprises polyvinyl chloride, polyethylene and additives, wherein the additives comprise a plasticizer, a filler, a thermal stabilizer, a weather resistant agent and an antioxidant, the plasticizer is diisopropyl phthalate, the filler is emery, the thermal stabilizer is dibutyltin dichloride, the weather resistant agent is phenyl salicylate, and the antioxidant is butyl hydroxy anisd. Therefore, the made polyvinyl chloride and polyethylene composite modified plastic has the effects of high rigidity, good mechanical strength, good weather resistance, good thermal stability, aging resistance and the like.
Owner:苏州市涵信塑业有限公司
Carbon Nanotube Composite High Performance Tire Tread Compound and Its Application
ActiveCN106928518BGood dispersionAvoid reunionSpecial tyresRolling resistance optimizationEnvironmental resistanceRolling resistance
The invention discloses tread rubber for a carbon nano tube composite high-performance tire. The tread rubber is prepared from, by weight, 100 parts of environment-friendly regeneration rubber, 50-60 parts of carbon nano tube rubber master batch, 40-60 parts of pyrolysis carbon black, 80-100 parts of natural rubber, 15-25 parts of zinc oxide, 8-12 parts of dibutyltin dichloride, 5-9 parts of coupling agent and 8-12 parts of a vulcanizing agent. The invention further discloses application thereof for a high-performance tire tread. The excellent nano tube excellent performance advantage is brought into play, the production cost of the tire is effectively lowered, the tread rubber has the advantages of being high in abrasion resistance and heat conductivity coefficient, low in rolling resistance and endurance thermogenesis, and low in production cost. The tread rubber for the carbon nano tube composite high-performance tire is free from extraneous odor, does no harm to the human body, remarkably improves the various performances, can be used for producing the high-performance rubber, is safe and environmentally friendly, and has the wide market prospect.
Owner:山东宝力科技有限公司
Synthesis process of trelagliptin succinate
PendingCN112939937AHigh yieldOrganic compound preparationCarboxylic acid salt preparationChemical synthesisPtru catalyst
The present invention discloses a trelagliptin succinate synthesis process, and relates to the technical field of pharmaceutical chemical synthesis. In the process, 2-cyano-5-fluorobenzyl bromide and 6-chloro-3-methyl uracil are adopted as starting raw materials, and condensation reaction is performed under the action of cuprous acetylacetonate and an acid-binding agent I to prepare an intermediate 1; then the intermediate 1 and (R)-3-aminopiperidine dihydrochloride are subjected to a condensation reaction under the action of dibutyltin dichloride and an acid-binding agent II to prepare an intermediate 2, and the intermediate 2 and succinic acid are subjected to a salt forming reaction to prepare trelagliptin succinate. Herein, the acid-binding agent and the catalyst are matched to improve the yield of the intermediate 1 and the intermediate 2, so that the total yield of the trelagliptin succinate is improved, the total yield reaches 80% or above, and the purity of the trelagliptin succinate reaches 99.5% or above.
Owner:HEFEI UNIV OF TECH
Preparation and detection method of pancreatic regenerating protein PSP/reg
ActiveCN109394747AVerify authenticityVerify reliabilityCompounds screening/testingMetabolism disorderVeinDibutyltin dichloride
The invention relates to a preparation and detection method of pancreatic regenerating protein PSP / reg. The preparation and detection method specifically comprises the steps that an adult healthy malesprague-dawley (SD) rat is adopted and treated with a single injection of dibutyltin dichloride in caudal vein to construct a chronic pancreatitis rat model, high fructose is given for feeding, a type 3c diabetes (T3cDM) rat model is established, and then detection of related physiological and biochemical indexes is performed. It is verified that the clinical physiological and biochemical changesof the T3cDM rat model established are consistent with the clinical physiological and biochemical changes of T3cDM. The rat model can establish an experimental basis for the drug screening and clinical treatment of T3cDM and provides experimental tools. Meanwhile, the pancreatic regenerating protein PSP / reg further provides a good experimental gist for the diagnosis or treatment of T3cDM.
Owner:ZHONGDA HOSPITAL SOUTHEAST UNIV
Preparation method and application of fluorine-containing aromatic ring carboxylic acid tetramer compound
InactiveCN110964056ALow costEasy to prepareTin organic compoundsAntineoplastic agentsBenzoic acidCarboxylic acid
The invention discloses a fluorine-containing aromatic ring carboxylic acid tetramer compound, and a preparation method and an application thereof. The preparation method comprises the following steps: adding 1.0 mmol of 2-amino-4,5-difluorobenzoic acid, 1.0 mmol of sodium ethoxide, 1.0 mmol of dibutyltin dichloride and 20-60 mL of methanol into a reaction container, performing stirring at 50 DEGC for 5 hours, and carrying out rotary evaporation to obtain a faint yellow powdery solid; and recrystallizing the faint yellow powdery solid with dichloromethane-n-hexane to obtain a faint yellow transparent crystal that is the fluorine-containing aromatic ring carboxylic acid tetramer compound, wherein a volume ratio of dichloromethane to n-hexane is 3:1 to 6:1. The fluorine-containing aromaticring carboxylic acid tetramer compound has anti-neuroblastoma activity. In the formula, n-Bu represents an n-butyl group.
Owner:WEIFANG MEDICAL UNIV +2
Method of preparing monobutyl tin trichloride and dibutyl tin dichloride from low purity tributyl tin chloride
PendingCN109824717AFully recycleBig difference in melting pointTin organic compoundsTetrachlorideDibutyltin dichloride
The invention discloses a method of preparing monobutyl tin trichloride and dibutyl tin dichloride from low purity tributyl tin chloride. The method comprises following steps: (1) mixing tributyl tinchloride with a purity lower than 95% with tin tetrachloride, controlling the temperature to carry out reactions to obtain a mixture composed of monobutyl tin trichloride and dibutyl tin dichloride; and (2) distilling and separating the mixture obtained in the step (1) to obtain monobutyl tin trichloride and dibutyl tin dichloride. Low purity and waste tributyl tin chloride is fully utilized to generate monobutyl tin trichloride and dibutyl tin dichloride that can be used, the cost for processing sewage of organic tin catalysts is reduced, and the utilization rate is improved.
Owner:南通濠泰化工产品有限公司
Macromolecular resin lens with high refractive indexes and preparation method thereof
InactiveCN109293816AReduce weightHigh refractive indexOptical partsOptical elementsPolymer scienceDibutyltin dichloride
The invention discloses a macromolecular resin lens with high refractive indexes. The macromolecular resin lens with high refractive indexes is prepared from the following raw materials in percentageby weight: 15-25% of dibutyl phthalate, 5-20% of allyl alcohol, 30-50% of isocyanate, 0.002-0.05% of dibutyltin dichloride, 0.06-0.1% of a photo-curing initiator, and the balance of methyl styrene. The invention further provides a preparation method of the macromolecular resin lens with high refractive indexes. The macromolecular resin lens with high refractive indexes and the preparation method thereof are capable of reducing weight of lens and improving refractive indexes of resin.
Owner:江苏硕延光学眼镜有限公司
A kind of anti-blue polymer resin lens and preparation method thereof
InactiveCN109188717BReduce intensityAnti blue lightEpoxy resin coatingsOptical partsPolymer scienceMeth-
The invention provides a blue light-resistant polymer resin lens comprising a lens main body and a coating layer arranged at the outer part of the lens main body; the lens main body contains the raw material components in percentage by weight: 15%-25% of dibutyl phthalate, 5%-20% of propenol, 30%-50% of isocyanate, 0.002%-0.05% of dibutyltin dichloride, 0.06%-0.1% of photocuring initiator and thebalance of methyl styrene; and the coating layer contains the following raw material components in percentage by weight: 45-55% of bisphenol A epoxy acrylate, 1-5% of tri(propyleneglycol)diacrylate, 1-5% of sodium benzoate, 0.05-3% of silicon dioxide, 0.05-3% of titanium dioxide and the balance of deionized water. The blue light-resistant polymer resin lens is capable of effectively resisting to blue light and reducing the strength of a high beam.
Owner:江苏硕延光学眼镜有限公司
Asymmetric out-of-focus lens
PendingCN112925115AStrong hardnessImprove experienceCoatingsOptical partsPtru catalystTrimethyltin chloride
The invention discloses an asymmetric out-of-focus lens which comprises a substrate and a protective film, wherein the substrate is made of a resin material, and comprises the following components in parts by weight: 30-50 parts of a polyisothiocyanate compound, 50-60 parts of a thiol compound, 2-3 parts of a catalyst and 5-8 parts of an ultraviolet absorbent. The catalyst is selected from two of dibutyltin dichloride, stannous octoate, methyltin trichloride, trimethyltin chloride or dibutyltin dilaurate and is mixed in equal proportion, the ultraviolet absorbent is prepared by uniformly dispersing rare earth oxide with the diameter of 20-30 nm in an alcohol ether solvent, and the mass concentration of the rare earth oxide in the alcohol ether solvent is 0.1%-0.5%. According to the invention, the ultraviolet absorption layer can obviously reduce the intensity of ultraviolet rays visually, so that the damage of the ultraviolet rays to the eyes of a user is reduced, and the use safety is improved; the light transmittance of the lens can be obviously improved through a light absorption indication layer and a photosensitive color-changing layer, so that the definition of the lens is improved to a certain extent.
Owner:江苏鸿晨集团有限公司
A kind of preparation method of monobutyl tin oxide
The invention provides a preparation method of monobutyltin oxide. The method includes the steps of firstly, adding tetrabutyl tin into a reactor, evenly stirring, slowly dropwise adding tin tetrachloride, then stirring for 30 minutes, heating to 140 DEG C, and performing heat-preservation reaction for 4-8 hours to obtain the mixed solution of monobutyltin trichloride and dibutyltin dichloride; secondly, heating the mixed solution of the monobutyltin trichloride and the dibutyltin dichloride to 95-100 DEG C, and collecting the monobutyltin trichloride; thirdly, adding the monobutyltin trichloride collected in the second step, surfactant and an organic solvent into a reactor, evenly stirring, slowly dropwise adding a sodium hydroxide solution, then heating to 90 DEG C, performing heat-preservation reaction for 3.5-4 hours, cooling to room temperature, filtering to obtain crude monobutyltin oxide, washing the crude monobutyltin oxide until the crude monobutyltin oxide is neutral, and performing reduced-pressure drying at 80 DEG C for 12 hours to obtain the monobutyltin oxide, wherein the surfactant is chitosan modified imidazoline ampholytic surfactant and quaternized polyvinyl alcohol.
Owner:启东市强强贸易有限公司
A kind of preparation method of dibutyltin oxide
ActiveCN107033182BTin organic compoundsPaints for electrolytic applicationsAluminium chlorideDibutyltin dichloride
The invention provides a preparation method of dibutyltin oxide. The dibutyltin oxide is at least prepared by (1), synthesis of tetrabutyl tin; (2), synthesis of dibutyl stannous chloride; (3), synthesis of dibutyltin oxide, wherein catalyst used in step (2) is composite of modified nano-crystalline cellulose and aluminium chloride. The dibutyltin oxide is applied to electric paint and electrophoretic paint fields.
Owner:启东市强强贸易有限公司
Preparation method of dibutyltin oxide and application thereof to sucralose synthesis
The invention provides a preparation method of dibutyltin oxide and application thereof to sucralose synthesis. The preparation method of the dibutyltin oxide comprises the following steps of (1) synthesizing tetrabutyl tin; (2) synthesizing dibutyltin dichloride; and (3) synthesizing dibutyltin oxide, wherein a surfactant in the step (3) is a Gemini cationic surfactant, and the dibutyltin oxide is applied to the field of sucralose synthesis.
Owner:启东市强强贸易有限公司
Preparation method of dibutyltin oxide and its application in the synthesis of sucralose
Owner:启东市强强贸易有限公司
Preparation method and application of aromatic carboxylate compound
InactiveCN110964054ALow costEasy to prepareTin organic compoundsUrinary disorderProstate cancer cellCancer cell
The invention discloses a novel aromatic carboxylate compound, and a preparation method and an application thereof. The structural formula of the compound is shown in the description. The preparationmethod comprises the following steps: adding 1.0 mmol of H3tmapob, 1.0 mmol of sodium ethoxide, 1.0 mmol of dibutyltin dichloride and 20-50 mL of dichloromethane into a reaction container, performingstirring at 30 DEG C for 5-7 h, and carrying out rotary evaporation to obtain a faint yellow powdery solid; and recrystallizing the faint yellow powdery solid with dichloromethane-diethyl ether to obtain a faint yellow transparent crystal that is the carboxylate compound, wherein a volume ratio of the dichloromethane to diethyl ether is 8:1 to 6: 1. Compared with platinum anticancer drugs commonlyused at present, the novel aromatic carboxylate compound has the characteristics of high anti-human prostate cancer cell activity, good lipid solubility, low cost, simple preparation method and the like, and provides a new way for developing anticancer drugs. In the formula, n-Bu represents an n-butyl group.
Owner:WEIFANG MEDICAL UNIV +2
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