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35 results about "Isopropyl benzene hydroperoxide" patented technology
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Method for producing isopropyl benzene
ActiveCN101768044AHydrocarbon from oxygen organic compoundsMetal/metal-oxides/metal-hydroxide catalystsHydrogenActive component
The invention relates to a method for producing isopropyl benzene by using a material containing isopropyl benzene hydroperoxide and alpha-alpha-dimethyl benzyl alcohol, which mainly solves the problems that in the production process of the isopropyl benzene in the prior art, the isopropyl benzene hydroperoxide decomposes and releases phenol easily to reduce the yield of the isopropyl benzene, and a catalyst containing Cr easily causes environmental pollution. The method comprises the following steps: after alkali washing, allowing the material containing isopropyl benzene hydroperoxide and alpha-alpha-dimethyl benzyl alcohol which is adopted as a raw material to enter a pre-hydrogenation unit for converting the isopropyl benzene hydroperoxide in the raw material into the alpha-alpha-dimethyl benzyl alcohol; and allowing the raw material to enter a hydrogenolysis reaction unit for converting the raw material into the isopropyl benzene, wherein an active component of a pre-hydrogenation catalyst is Pd, Pt or a mixture of Pd and Pt or a mixture of the oxide of Pd and Pt; an active component of a hydrogenolysis atalyst is Pd, or a mixture of Pd and Pt or a mixture of the oxide of Pd and Pt; a technical scheme solves the problem; and the method can be applied to industrial production of the isopropyl benzene.
Owner:CHINA PETROLEUM & CHEM CORP +1
Catalyst for preparing epoxy propane by propylene liquid-phase epoxidation reaction and preparation method thereof
ActiveCN102139227AEasy to separateEasy to prepareOrganic chemistryMolecular sieve catalystsPtru catalystIsopropyl benzene hydroperoxide
The invention discloses a catalyst for preparing epoxy propane by one-step liquid phase oxidation based on isopropyl benzene hydroperoxide as an oxidant and a preparation method thereof. The catalyst is Ti-SBA-15 porous material and is characterized in that titanium is loaded on SBA-15 material by using a chemical vapor deposition method, wherein the SBA-15 has the pore diameter from 6 nanometersto 7 nanometers and a hexagonal structure, and a template agent in the SBA-15 is removed by using an ethanol extraction method. Ti-SBA-15 which is prepared by means of 1.5-hour chemical vapor deposition at 700 DEG C is used as a catalyst, reaction is performed for 4 hours at 2.4MPa and 80 DEG C, the conversion rate of isopropyl benzene hydroperoxide can reach 87%, and the selectivity of epoxy propane can reach 96%. The catalyst is simple in preparation and easy in post-reaction separation, can be recycled many times, and has high chemical stability. The reaction process for preparing epoxy propane by one-step propylene epoxidation, in which the Ti-SBA-15 prepared by using the method provided the invention is used as the catalyst, has the characteristics of few byproducts, simple treatmentof reaction liquid, good environmental friendliness and the like.
Owner:EAST CHINA UNIV OF SCI & TECH
Coproduction method of 1,2-epoxycyclohexane and α,α-dimethylbenzyl alcohol
The invention relates to a method for producing 1,2-epoxy cyclohexane and alpha, alpha-dimethyl benzyl alcohol. The method mainly solves the problems of serious production process pollution, poor product quality and high production cost when the 1,2-epoxy cyclohexane and the alpha, alpha-dimethyl benzyl alcohol are separately produced in the prior art. Isopropyl benzene hydroperoxide and cyclohexene undergo oxidation-reduction reaction on a titanium-containing porous silicon dioxide catalyst under the mild reaction condition, wherein the isopropyl benzene hydroperoxide is reduced into the alpha, alpha-dimethyl benzyl alcohol, and the cyclohexene is oxidized into the 1,2-epoxy cyclohexane; and meanwhile, by adjusting the molar ratio of the cyclohexene to the isopropyl benzene hydroperoxide in the raw materials, the cyclohexene is totally converted or has little residue in the reaction process. According to the technical scheme, the problems are well solved, and the method can be used for industrial production of producing the 1,2-epoxy cyclohexane and the alpha, alpha-dimethyl benzyl alcohol.
Owner:CHINA PETROLEUM & CHEM CORP +1
Catalyst for producing epoxypropane by liquid phase one-step oxidation of propylene and preparation method
InactiveCN101497045AImprove catalytic performanceOrganic chemistryPhysical/chemical process catalystsIsopropyl benzene hydroperoxideOxidizing agent
The invention discloses a catalyst used for preparing propylene oxide by liquid phase oxidation of propylene in one step through taking isopropyl benzene hydroperoxide as an oxidant, and a preparation method thereof. The catalyst is a supported molybdenum oxide catalyst containing chlorine, and is formed by a catalytic active composition MoO3, an accelerative catalyst Cl and a carrier SiO2 to be prepared by the sol-gel method. The catalyst reacts for 4 hours at 80 DEG C and 2.2MPa, and yield and selectivity of the propylene oxide can reach 90 percent and 100 percent respectively.
Owner:EAST CHINA UNIV OF SCI & TECH
Method used for combined production of dimethyl-benzyl carbinol and 1,2-pentanediol
ActiveCN107445796ANothing producedSimple processOrganic compound preparationPreparation by hydrolysisCyclopenteneIsopropyl benzene hydroperoxide
The invention provides a method used for combined production of dimethyl-benzyl carbinol and 1,2-pentanediol. The method comprises following steps: 1-pentene and isopropyl benzene hydroperoxide are subjected to epoxidation reaction under the action of an epoxidation catalyst so as to obtain a reaction solution containing 1,2-cyclopentene oxide and dimethyl-benzyl carbinol; the reaction solution is subjected to separation so as to obtain 1,2-cyclopentene oxide and dimethyl-benzyl carbinol; 1,2-cyclopentene oxide and water are subjected to hydrolysis reaction under the action of a hydrolysis catalyst, and rectification is carried out so as to obtain 1,2-pentanediol. According to the method, 1-pentene and isopropyl benzene hydroperoxide are taken as the raw materials in combined production of dimethyl-benzyl carbinol and 1,2-pentanediol, operation is simple, synthesis cost is low, no waste water is generated in synthesis process, dimethyl-benzyl carbinol selectivity is 90% or higher, and 1,2-pentanediol selectivity is 80% or higher.
Owner:昌德新材科技股份有限公司 +1
Rubber material for automobile transmission belt and preparation method therefor
The invention discloses a rubber material for an automobile transmission belt and a preparation method therefor. The rubber material is mainly prepared from the following ingredients in parts by weight: 60 parts of acrylic resin, 40-60 parts of styrene-butadiene rubber, 50-70 parts of natural rubber, 1-9 parts of coupling agent, 2-6 parts of curing agent, 1-7 parts of zinc oxide, 2-8 parts of isopropyl benzene hydroperoxide, 0.1-0.5 part of anti-aging agent, 0.3-0.7 part of accelerant and 30-40 parts of isopropyl alcohol. Compared with the prior art, the rubber material for the automobile transmission belt and the preparation method therefor disclosed by the invention have the advantages that the process is simple, the cost is low, the rubber material has the heat resistance and wear resistance of transmission belts in the prior art, and most importantly, wear resistance and tensile resistance can be simultaneously taken into account, so that the overall performance is excellent.
Owner:SUZHOU GOODTIME TECH DEV
Fiber-toughened antimicrobial wear-resistant cable material and preparation method thereof
InactiveCN104761851AHigh strengthImprove toughnessPlastic/resin/waxes insulatorsLow-density polyethylenePolyester
The invention discloses a fiber-toughened antimicrobial wear-resistant cable material. The invention is characterized in that the cable material is prepared from the following raw materials in parts by weight: 13-15 parts of carbon nanotube, 8-10 parts of low density polyethylene, 11-13 parts of cyclopentyl acrylate, 0.02-0.03 part of isopropyl benzene hydroperoxide, 1-1.3 parts of dehydroacetic acid, 5-6 parts of aluminum hydroxide, 69-72 parts of polyvinyl chloride resin, 3-5 parts of wood meal, 2-4 parts of bamboo fiber, 8-10 parts of polyphthalate, 8-10 parts of cordierite powder, 1-2 parts of 6-tert-butyl-3-methylphenol and 7-9 parts of assistant. The wood meal, bamboo fiber and the like are added to enhance the strength and toughness of the product, and the cable material has certain antimicrobial effect. The carbon-nanotube-base polymer prepared by a certain technique is added into the cable material to greatly improve the product performance, so that the product has favorable strength, elasticity and fatigue resistance. The cable has favorable processing flowability, and is suitable for large-scale production.
Owner:HEXIAN ELECTRICAL POWER WIRE & CABLE
Dual-curing UV (Ultraviolet Rays) glue based on acrylic-modified hyperbranched waterborne polyurethane and preparation method thereof
ActiveCN107189730AImprove wear resistanceImprove mechanical propertiesNon-macromolecular adhesive additivesModified epoxy resin adhesives(Hydroxyethyl)methacrylatePropanoic acid
The invention provides a dual-curing UV (Ultraviolet Rays) glue based on acrylic-modified hyperbranched waterborne polyurethane and a preparation method thereof. The specific preparation method comprises the following steps: putting isophorone diisocyanate and dibutyltin dilaurate into a four-opening flask, and stirring at room temperature; firstly, adding polycarbonate diols to react, then, adding hydroxyl terminated polyether modified silicone oil, and carrying out temperature reaction; then, adding dimethylol propionic acid to react, and finally, adding hydroxyethyl methylacrylate and 4-metoxyphenol to react; finally, adding Di-PE to react to prepare hyperbranched waterborne polyurethane; adding hydroxyl-containing acrylic monomer and initiator into hyperbranched waterborne polyurethane to react to obtain acrylic-modified hyperbranched waterborne polyurethane; mixing with epoxy acrylate, and adding acrylic acid, benzenesulfonyl hydrazide, saccharin, photoinitiator and stabilizer; stirring in a planetary mixer, adding isopropyl benzene hydroperoxide initiator, and carrying out vacuum stirring and light-proof packaging to obtain the dual-curing UV glue based on the acrylic-modified hyperbranched waterborne polyurethane.
Owner:福建纳川水务有限公司
Normal-temperature solidifiable single-component liquid sealing material
InactiveCN103666357ALow costHigh bonding strengthNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesEpoxyPolyvinyl butyral
The invention provides a normal-temperature solidifiable single-component liquid sealing material. The normal-temperature solidifiable single-component liquid sealing material comprises methacrylic resin, polyurethane methacrylic resin, methacrylic acid or acrylic acid, isopropyl benzene hydroperoxide, acetylphenylhydrazine, polyvinyl butyral and plastic filler, wherein according to mass proportions, at least one of epoxy methacrylic resin and polyurethane methacrylic resin is selected and accounts for 60%-80%, at least one of hydroxypropyl methacrylate and hydroxyethyl methacrylate is selected and accounts for 10%-40%, isopropyl benzene hydroperoxide accounts for 2%-10%, methacrylic acid or acrylic acid accounts for 1%-8%, fumed silica accounts for 1%-5%, isopropyl benzene hydroperoxide accounts for 1%-10%, polyvinyl butyral accounts for 0%-20%, and acetylphenylhydrazine accounts for 0.02%-0.4%. Compared with analogue materials, the normal-temperature solidifiable single-component liquid sealing material has the advantages that the bonding strength can be adjusted, after being sealed, components can be dismantled, the sealing property of the sealing material is stable, the price of raw materials is low, the storage stability of the sealing material is good, and the production technology of the sealing material is simple.
Owner:JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
Powder silicon-ingot-cutting adhesive with good fluidity and preparation method thereof
ActiveCN106590513AGood flexibilityApply evenlyNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesAdhesivePass rate
The invention discloses a powder silicon-ingot-cutting adhesive with good fluidity. The adhesive comprises gum and an accelerant. The adhesive is characterized in that the gum includes the raw materials which comprise, by weight, 15-20 parts of urethane acrylate, 30-35 parts of hydroxypropyl methacrylate, 20-25 parts of filled silica, 0.5-1 part of fumed silica, 3-8 parts of thermoplastic resin with large molecular weight, 1-1.5 parts of methacrylic acid, 6-10 parts of epoxy acrylate, 0.5-1 part of isopropyl benzene hydroperoxide, 0.5-1 part of N,N-dialkylarylamine, 0.2-0.5 part of benzoic sulfimide, 0.01-0.1 part of polymerization inhibitor and 1-5 parts of coupling agent. During the process of frictioning, the adhesive liquid with greatly improved fluidity is capable of rapidly and evenly being spread on a silicon ingot which needs cutting, and has the advantages of inhibiting the existence of hollow gel, ensuring the stability of the cutting progress and improving the pass rate of cutting products.
Owner:广西珀源新材料有限公司
Method for preparing polyethylene-based wood-plastic composite material by using straws
InactiveCN104774374AImprove performanceEasy to operateLinear low-density polyethyleneIsopropyl benzene hydroperoxide
The invention discloses a method for preparing a polyethylene-based wood-plastic composite material by using straws. The method comprises the steps of weighing raw materials, namely straw powder, linear low-density polyethylene, isopropyl benzene hydroperoxide, dibutyl tin diacetate, organosilane, dibutyl maleate and dibasic lead stearate, according to the following mass ratio of (10-50): (30-60): (0.05-2): (0.02-2): (10-15): (2-8): (0.3-4.5), uniformly mixing the raw materials in a high-speed stirrer so as to prepare a mixed material, then, reacting and extruding in a twin-screw extruder so as to prepare an extruded material, and pressing a die containing the extruded material on a plate vulcanizing machine, thereby preparing the polyethylene-based wood-plastic composite material. According to the method disclosed by the invention, the operation is simple, the waste is utilized, and large-scale popularization and application are facilitated; the prepared polyethylene-based wood-plastic composite material is non-toxic and environment-friendly, is excellent in comprehensive performance and easy in processing and can replace the traditional timber, thereby having a broad application prospect.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Method for producing phenol and acetone
ActiveUS20100099919A1Organic compound preparationCarbonyl compound preparationPHENOL LIQUIDIsopropyl benzene hydroperoxide
A method for producing phenol and acetone in a multi-stage process at an elevated temperature from a cumene hydroperoxide mixture comprising cumene, the method comprising the steps of a) reacting the cumene hydroperoxide mixture with a 2-hydroxybenzenesulfonic acid catalyst having a concentration of 0.1 to 1 mmol / L acid catalyst to form a second mixture comprising phenol, acetone and dicumyl peroxide in a first stage and decomposing the second mixture in a second stage to produce a third mixture comprising phenol and acetone.
Owner:SABIC INNOVATIVE PLASTICS IP BV
Anaerobic adhesive and preparation method thereof
InactiveCN106675498ALow costHigh strengthNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesDimethylaniline N-oxide(Hydroxyethyl)methacrylate
The invention discloses an anaerobic adhesive and a preparation method thereof. The anaerobic adhesive is composed of the following raw materials in parts by weight: 20-25 parts of hydroxyethyl methylacrylate, 8-15 parts of polyurethane acrylate, 8-12 parts of epoxy acrylate, 40-45 parts of precipitated silicon dioxide, 4-5 parts of a thixotropic agent, 1-2 parts of hydroxyethyl acrylate, 1-1.5 parts of trimethylolpropane triacrylate, 0.1-0.3 part of acrylic acid, 1-3 parts of isopropyl benzene hydroperoxide, 1-3 parts of N,N-dimethylaniline, 0.3-0.8 part of o-benzoic sulfimide, 0.5-1 part of a polymerization inhibitor, 0.1-0.5 part of a coupling agent and 0.01-0.05 part of disodium ethylene diamine tetraacetate. The anaerobic adhesive disclosed by the invention has the characteristics of being low in cost of raw materials, high in strength, high in hardness, high in viscosity and good in storage stability.
Owner:广西珀源新材料有限公司
A kind of dual curing uv adhesive based on acrylic acid modified hyperbranched waterborne polyurethane and preparation method thereof
ActiveCN107189730BImprove high temperature resistanceImprove water resistanceNon-macromolecular adhesive additivesModified epoxy resin adhesivesPolymer scienceMeth-
The invention provides a dual-curing UV (Ultraviolet Rays) glue based on acrylic-modified hyperbranched waterborne polyurethane and a preparation method thereof. The specific preparation method comprises the following steps: putting isophorone diisocyanate and dibutyltin dilaurate into a four-opening flask, and stirring at room temperature; firstly, adding polycarbonate diols to react, then, adding hydroxyl terminated polyether modified silicone oil, and carrying out temperature reaction; then, adding dimethylol propionic acid to react, and finally, adding hydroxyethyl methylacrylate and 4-metoxyphenol to react; finally, adding Di-PE to react to prepare hyperbranched waterborne polyurethane; adding hydroxyl-containing acrylic monomer and initiator into hyperbranched waterborne polyurethane to react to obtain acrylic-modified hyperbranched waterborne polyurethane; mixing with epoxy acrylate, and adding acrylic acid, benzenesulfonyl hydrazide, saccharin, photoinitiator and stabilizer; stirring in a planetary mixer, adding isopropyl benzene hydroperoxide initiator, and carrying out vacuum stirring and light-proof packaging to obtain the dual-curing UV glue based on the acrylic-modified hyperbranched waterborne polyurethane.
Owner:福建纳川水务有限公司
Esomeprazole preparation method
The invention discloses an esomeprazole preparation method which includes the steps: transferring 3, 5-dimethyl pyridine into a reactor; adding oxide into the reactor; adding nitride into the reactor; placing methoxyl into the reactor and performing substitution to obtain 3, 5-dimethyl-4-methoxypyridine-N-oxide; adding cyano and performing cyano substitution and acidifying hydrolysis to obtain 3, 5-dimethyl-4-methoxypyridine-2-carboxylic acid; reducing and chloro-substituting the 3, 5-dimethyl-4-methoxypyridine-2-carboxylic acid by lithium aluminum hydride to obtain 3, 5-dimethyl-4-methoxyl-2-chloromethylpyridine hydrochloride; adding 5-methoxyl-2-sulfydryl-1H-benzimidazole into the 3,5-dimethyl-4-methoxyl-2-chloromethylpyridine hydrochloride; mixing and stirring materials for 5-10 minutes; asymmetrically oxidizing 5-methoxyl-2-[(4-methoxyl-3, 5-dimethyl-2-pyridyl) methylthio]-1H-benzimidazole by titanium isopropoxide, D-tartaric acid propanamide and isopropyl benzene hydroperoxide to obtain esomeprazole. The finished product ratio of the esomeprazole is remarkably increased, the obtained esomeprazole is high in purity, and no impurities remain in the esomeprazole.
Owner:武汉励合生物医药科技有限公司
Method for producing 1,2-epoxy cyclohexane, alpha, alpha-dimethyl benzyl alcohol and cyclohexane
ActiveCN102295624BHigh purityMeet the needs of the reaction processDistillation purification/separationPreparation by oxygen reductionEpoxyCyclohexene
Owner:CHINA PETROLEUM & CHEM CORP +1
Machining manner of escalator part
The invention discloses a machining manner of an escalator part. Polyvinyl chloride, epoxy acetyllinolenic acid methyl ester, methyl hydrogen silicone oil, limestone, a reinforcing agent DH-3 and white carbon black are added into a mixing machine, the mixing machine is used for enabling the polyvinyl chloride, the epoxy acetyllinolenic acid methyl ester, the methyl hydrogen silicone oil, the limestone, the reinforcing agent DH-3 and the white carbon black to be mixed, and after mixing, first viscous materials are formed; and isopropyl benzene hydroperoxide and aluminium nitride are added intothe viscous materials, the mixing machine is continuously used for mixing, the temperature is controlled to range from 28 DEG C to 32 DEG C, and after mixing, second viscous materials are formed. Thedefects that in the prior art, a case body of a server case is commonly and directly placed on the ground surface, putting is not firm, tensile strength, yield strength and compressive strength of thermoplastic resin are small, the higher and higher tensile strength cannot be achieved, and the thermoplastic resin cannot meet the requirement are overcome.
Owner:海安亚鼎机电制造有限公司
Multicolor decorative paint for cement tiles and preparation method thereof
InactiveCN104893443AGood stain resistance and self-cleaning performanceIncrease elasticityMulticolor effect coatingsPhosphoric acidIsopropyl benzene hydroperoxide
The invention relates to a multicolor decorative paint for cement tiles and a preparation method thereof. The paint contains the following components in parts by mass: 20-32 parts of water, 30-46 parts of styrene-acrylic emulsion, 6-14 parts of quartz powder, 0.8-3.4 parts of brown fused alumina, 10-26 parts of ground calcium carbonate, 3-9 parts of natural rubber, 1-2.4 parts of urea formaldehyde resin adhesive, 0.1-0.5 part of sodium carbonate, 0.3-0.8 part of calcium hexametaphosphate, 1.5-3.3 parts of ethylene glycol, 1.6-3.5 parts of tributyl phosphate, 0.01-0.05 part of sodium dodecylsulfate, 0.02-0.06 part of isopropyl benzene hydroperoxide, 0.7-1.5 parts of organosilicon defoaming agent, 0.1-0.4 part of fatty acid methyl ester, 0.3-0.9 part of silicone emulsion and 1.5-4.8 parts of alcohol ester-12. The paint provided by the invention has the advantages of favorable pollution-resistant and self-cleaning properties, abundant colors and favorable visual effect.
Owner:SUZHOU DEXIANG DECORATION ENG
Catalyst for producing epoxypropane by liquid phase one-step oxidation of propylene and preparation method
InactiveCN101497045BImprove catalytic performancePhysical/chemical process catalystsOrganic chemistryIsopropyl benzene hydroperoxideOxidizing agent
The invention discloses a catalyst used for preparing propylene oxide by liquid phase oxidation of propylene in one step through taking isopropyl benzene hydroperoxide as an oxidant, and a preparation method thereof. The catalyst is a supported molybdenum oxide catalyst containing chlorine, and is formed by a catalytic active composition MoO3, an accelerative catalyst Cl<-> and a carrier SiO2 to be prepared by the sol-gel method. The catalyst reacts for 4 hours at 80 DEG C and 2.2MPa, and yield and selectivity of the propylene oxide can reach 90 percent and 100 percent respectively.
Owner:EAST CHINA UNIV OF SCI & TECH
Method for producing isopropyl benzene
ActiveCN101768044BHydrocarbon from oxygen organic compoundsMetal/metal-oxides/metal-hydroxide catalystsHydrogenActive component
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for producing 1,2-epoxy cyclohexane and alpha, alpha-dimethyl benzyl alcohol
Owner:CHINA PETROLEUM & CHEM CORP +1
Good fluidity powder silicon ingot cutting glue and preparation method thereof
ActiveCN106590513BGood flexibilityApply evenlyNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesAdhesivePass rate
The invention discloses a powder silicon-ingot-cutting adhesive with good fluidity. The adhesive comprises gum and an accelerant. The adhesive is characterized in that the gum includes the raw materials which comprise, by weight, 15-20 parts of urethane acrylate, 30-35 parts of hydroxypropyl methacrylate, 20-25 parts of filled silica, 0.5-1 part of fumed silica, 3-8 parts of thermoplastic resin with large molecular weight, 1-1.5 parts of methacrylic acid, 6-10 parts of epoxy acrylate, 0.5-1 part of isopropyl benzene hydroperoxide, 0.5-1 part of N,N-dialkylarylamine, 0.2-0.5 part of benzoic sulfimide, 0.01-0.1 part of polymerization inhibitor and 1-5 parts of coupling agent. During the process of frictioning, the adhesive liquid with greatly improved fluidity is capable of rapidly and evenly being spread on a silicon ingot which needs cutting, and has the advantages of inhibiting the existence of hollow gel, ensuring the stability of the cutting progress and improving the pass rate of cutting products.
Owner:广西珀源新材料有限公司
Reinforced concrete inner curing superabsorbent microsphere material and preparation method
ActiveCN110606690BPozzolanic activityReduce early hydrationMicrosphereIsopropyl benzene hydroperoxide
Disclosed are a reinforced concrete internal curing high-water-absorption microsphere material and a preparation method therefor. The microsphere material is prepared from the following raw materials: nano silica, chitosan, glutaraldehyde, arabic gum, methacrylic acid, glacial acetic acid, isopropyl benzene hydroperoxide, ferrous chloride and sodium ethoxide. Same modifies the microstructure inside a cement-based material by improving a transition region between a cement paste and an aggregate, whereby the porosity is reduced and the mechanical properties are improved.
Owner:CHANGAN UNIV
Preparation method of automatic inflation tire repair liquid
InactiveCN107201209AIncrease the areaLarge surface functional groupsNatural rubber adhesivesNon-macromolecular adhesive additivesFiberFiltration
The invention discloses a preparation method of automatic inflation tire repair liquid, and belongs to the technical field of tire repair liquid preparation. The preparation method comprises the following steps: firstly, sun-drying and carbonizing polar branches, and then performing crushing modification to obtain modified carbonized powder; secondly, soaking asbestos fibers and glass fibers with a silane coupling agent, then performing filtration and freeze-drying, performing crushing and screening, then performing mixing and ultrasonic dispersion with the modified carbonized powder, castor oil, super-light clay and the like to obtain modified castor oil after crushing and screening, and then performing reduced pressure mixing with polyether glycol and styrene-butadiene rubber powder to obtain viscous fluid; and finally, taking milky liquid of a fresh rubber tree to mix with the viscous fluid and isopropyl benzene hydroperoxide, then filling the mixture into a tank, and introducing nitrogen to fully fill the reset volume of a part in the tank, thereby obtaining the automatic inflation tire repair liquid. The raw materials used in the preparation method disclosed by the invention are safe and noncorrosive, cannot corrode tire hubs, and cannot cause pollution to the environment; and the prepared tire repair liquid is strong in cementation force, and can be strongly attached to the lining surface of a tire to form a layer of protective film to ensure that the adhesive layer property of the tire is enhanced and the service life of the tire is prolonged, so that the tire repair liquid has a good application prospect.
Owner:谢新昇
Catalyst for preparing epoxy propane by propylene liquid-phase epoxidation reaction and preparation method thereof
ActiveCN102139227BEasy to separateEasy to prepareOrganic chemistryMolecular sieve catalystsGas phaseIsopropyl benzene hydroperoxide
The invention discloses a catalyst for preparing epoxy propane by one-step liquid phase oxidation based on isopropyl benzene hydroperoxide as an oxidant and a preparation method thereof. The catalyst is Ti-SBA-15 porous material and is characterized in that titanium is loaded on SBA-15 material by using a chemical vapor deposition method, wherein the SBA-15 has the pore diameter from 6 nanometersto 7 nanometers and a hexagonal structure, and a template agent in the SBA-15 is removed by using an ethanol extraction method. Ti-SBA-15 which is prepared by means of 1.5-hour chemical vapor deposition at 700 DEG C is used as a catalyst, reaction is performed for 4 hours at 2.4MPa and 80 DEG C, the conversion rate of isopropyl benzene hydroperoxide can reach 87%, and the selectivity of epoxy propane can reach 96%. The catalyst is simple in preparation and easy in post-reaction separation, can be recycled many times, and has high chemical stability. The reaction process for preparing epoxy propane by one-step propylene epoxidation, in which the Ti-SBA-15 prepared by using the method provided the invention is used as the catalyst, has the characteristics of few byproducts, simple treatmentof reaction liquid, good environmental friendliness and the like.
Owner:EAST CHINA UNIV OF SCI & TECH
Drill rod thread sealing grease for coal mine hydraulic measure
InactiveCN109135893AImprove wettabilityImprove the lubrication effectLubricant compositionElastomerAntioxidant
The invention discloses drill rod thread sealing grease for a coal mine hydraulic measure. The drill rod thread sealing grease for the coal mine hydraulic measure comprises methacrylic acid, triethylene glycol, sulfuric acid, hydroquinone, methylbenzene, poly-2,6-dimethyl-1,4-phenylate, polyvinyl acetate, a styrene elastomer, mica, superfine graphite powder, ceramic particles, polypropylene fibers, isopropyl benzene hydroperoxide, N-methyldiethanolamine, acidized saccharin, a polymerization inhibitor, an antioxidant, and a tackifier. A particle size of the ceramic particles is 2.8 um. High temperature resistance can reach 700 DEG C, and high pressure resistance is 100 MPa. Wettability is good. All possible leakage channels of a thread can be adequately filled by the sealing grease, and anelastic-plastic body polymer is formed by solidifying. A sealing layer is formed on the surface of the thread, and a hole and a gap do not exist in a sealing place, so moisture and other corrosive substances cannot be stored, and the corrosive effect is reduced. The sealing grease is good in leakproofness, and good in lubricity, and capable of preventing a thread gluing phenomenon without containing oil, lead, heavy metal, toxicity, and abiotic degradation components.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
A kind of acrylate adhesive for power battery packaging
ActiveCN106634633BPrevent overflowAvoid causing concentrated heat releaseNon-macromolecular adhesive additivesMacromolecular adhesive additivesToluidineThiourea
The invention discloses an acrylic ester adhesive for power battery encapsulation and relates to the field of acrylic ester structural adhesives. The acrylic ester adhesive comprises 1 part of an oxidizing agent and 0.5 to 3 parts of a reducing agent, wherein the oxidizing agent comprises 40 to 60 parts of tetrahydrofurfuryl methacrylate, 5 to 10 parts of methyl methacrylate, 5 to 10 parts of chlorosulfonated polyethylene, 1 to 5 parts of trimethylolpropyltriacrylate, 0.5 to 3 parts of a stabilizing agent, 5 to 8 parts of isopropyl benzene hydroperoxide and 2 to 4 parts of fumed silica; and the reducing agent comprises 40 to 60 parts of tetrahydrofurfuryl methacrylate, 5 to 10 parts of methyl methacrylate, 5 to 10 parts of SBS, 1 to 4 parts of thiourea, 0.5 to 3 parts of N,N-dihydroxyethyl-p-toluidine, 1 to 6 parts of methacrylic acid, 0.5 to 2 parts of a stabilizing agent, 2 to 4 parts of fumed silica and 1 to 3 parts of a defoaming agent. The acrylic ester adhesive for power battery encapsulation is low in heat release during use, the internal structure of the adhesive after encapsulation molding is uniformly, air holes and ripple are avoided, and the safe reliability of the battery can be improved.
Owner:湖北回天新材料(宜城)有限公司 +1
A kind of preparation method of solid barbed spherical conductive copolymer
InactiveCN104530427BSimple processSuitable for large-scale industrial productionAir atmosphereGas detector
The invention relates to a preparation method of a solid aristate spherical conducting copolymer, which comprises the following steps: (1) dissolving a certain mass of ferrous chloride in deionized water in a three-neck flask at the stirring rate of 300 r / min to obtain a 2.0-5.0*10<-2> mol / L ferrous chloride solution, stirring uniformly by ultrasonic dissolution, and putting in a cold bath for later use; (2) adding 0.23 mL of pyrrole monomer into the uniformly stirred ferrous chloride solution, and continuing stirring for 30 minutes until the solution is uniformly mixed; (3) adding 0.34 mL of aniline monomer into the uniformly stirred ferrous chloride / pyrrole monomer mixed solution, and continuing stirring for 30 minutes until the solution is uniformly mixed; (4) slowly and dropwisely adding an isopropyl benzene hydroperoxide solution into the mixed solution while stirring, and increasing the stirring rate to react at 0 DEG C or so for 24 hours, thereby obtaining a brown reaction solution; and (5) carrying out solid-liquid separation on the obtained reaction solution, recovering the liquid for later use, washing the solid with water and alcohol three times, and drying at 60 DEG C in an air atmosphere for 24 hours, thereby obtaining the solid aristate spherical polypyrrole / polyaniline copolymer. The method prepares the solid aristate spherical polypyrrole / polyaniline copolymer by using isopropyl benzene hydroperoxide and ferrous chloride as the redox system for the first time; and the conductive polymer in such a structure has many potential applications in the fields of supercapacitor electrode materials, gas sensors and lithium battery materials.
Owner:QILU UNIV OF TECH
Waterproof heat-insulating material and preparation method thereof
The invention discloses a waterproof heat-insulating material and a preparation method thereof. The invention includes following steps: mixing tetraphenyl resorcinol diphosphate, pentaerythritol phosphate and dimethyl phthalate, and stirring well; adding glass fiber while stirring, rising temperature to 80-100 DEG C, adding polyurethane methacrylic resin and methacrylic acid, and allowing heat-insulating reaction for 2-3h; cooling to 40-60 DEG C, adding polytef, isopropyl benzene hydroperoxide and trimethyl ethylenediamine, and mixing well; injecting into a heat-insulating layer to obtain thewaterproof heat-insulating material. Due to adding of polytef, heat conducting coefficient can be maintained below 0.03W / (m K), and the material has good heat-insulating effect. The glass fiber can improve average contact angle of the material, so that the material has good waterproof effect.
Owner:NANJING LI HANG IND INST OF BIONIC TECH LTD
A kind of preparation method of dicumyl hydroperoxide
ActiveCN113620853BIncrease reaction rateGood miscibility in the systemOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystReaction rate
Owner:WANHUA CHEM GRP CO LTD
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