322 results about "Di-tert-butyl peroxide" patented technology

The present invention relates generally to a composition and method for decreasing the emissions from combustion of fuel that contains biodiesel, where the composition contains at least one ignition accelerator and at least one plant extract or synthetic component similar to a portion of a plant extract. The ignition accelerator is preferably a peroxide, for example, di-tert-butyl peroxide. The composition may optionally contain meadowfoam oil or jojoba oil. The composition may also enhance the lubricity of the fuel that contains biodiesel.

The invention discloses a preparation method of tert-butyl hydroperoxide and di-t-butyl peroxide which includes the following steps: after mixing vitriol, oxyful and phosphotungstic acid with certain concentration, adding tertiary butyl alcohol into a mixed liquor or adding the mixed liquor into the tertiary butyl alcohol; reacting for 0.5 to 5 hours under 20 to 60 DEG C; obtaining an oil phase after carrying out liquid separation on the crude product of the reaction; obtaining the tert-butyl hydroperoxide and di-t-butyl peroxide products by carrying out decompressing and rectifying on the oil phase; the method has the advantages of simple and convenient operation, low manufacture cost, safety, high efficiency and high yield; in addition, the method of the invention can adjust the relative content of the two reaction products by changing the reaction conditions. The reaction products of tert-butyl hydroperoxide and di-t-butyl peroxide are separated by decompressing and rectifying, thus avoiding the working procedures of acid cleaning and caustic wash in the traditional technique, solving the defect of overlarge waste water amount in the traditional technique, being beneficial to protecting the environment, reducing the manufacture cost and being capable of greatly increasing the enterprise benefits.

An agricultural polyethylene resin composition mainly comprises linear low density polyethylene and di-tert-butyl peroxide, wherein the dosage of di-tert-butyl peroxide is 0.3-0.6 (percentage by weight, based on linear low density polyethylene). The resin composition can be used for blowing agricultural covering films.

The invention provides a method for preparing tert-butyl peroxide by using a heterogeneous catalyst. The method comprises the following steps: by using tert-butyl alcohol and oxydol as raw materials and an acidic ion exchange resin as a catalyst, reacting under reflux, cooling, standing, and separating to obtain an oil phase and a water phase; and washing the oil phase with alkali and water to obtain a di-tert-butyl peroxide solution (DTBP), wherein the oil phase water washing solution and water phase are the tert-butyl hydroperoxide water solution (TBHP). Since the ion exchange resin has the advantages of large pore structure, high acidity and high catalysis efficiency and the large pore structure can not be destroyed in reaction, the catalyst can be easily separated from the reaction product and can be recycled repeatedly, thereby having higher economic value. Besides, no sulfuric acid or any other strong acid is used in the production process, so the method has the advantages of low corrosion to equipment and no environment pollution, and has higher environmental benefit.

The invention discloses an irradiation resistant non-halogen low smoke flame-retardant sheathing material applied to nuclear power stations and a preparation method. The raw materials comprises ethane-vinyl acetate rubber, maleic anhydride stem grafting ethane-vinyl acetate rubber, magnesium hydroxide fire retardant, organic silicon fire retardant, nano cerium oxide, FEF, zinc stearate, stearic acid, vinyl trisilane, Aflux A-16, Aflux A-25, polycarbonate diimine(PCD-50), 2, 2, 4-trimethyl-1, 2-dihydride quinoline, antiager DDA, di-tert-butyl peroxide cumene, triene propylcyanide uric acid ester and decanedioic acid dioctyl, which are heated and mixed to obtain the materials of the invention. The invention features scientific and reasonable formula and proportion, and the process is advanced. The sheathing material features fine irradiation resistance, excellent mechanical properties and long service life, thus being a good irradiation resistant non-halogen low smoke and flame-retardant sheathing material applied to nuclear power stations.

The invention discloses an agricultural polyethylene resin composition. The composition mainly consists of linear low-density polyethylene LLDPE and organic peroxide, wherein the organic peroxide is combined by di-tert-butyl peroxide DTBP and tert-butyl hydroperoxide TBHP according to the combination ratio of between 1:1 and 6:1, and the consumption of the organic peroxide is between 500 and 2,500ppm (based on each gram of linear low-density polyethylene). In the composition, the linear low-density polyethylene LLDPE is cross-linked by compounding the peroxide, and when the obtained modified high-bath strength LLDPE resin is used for blowing a 80 mum agricultural green house membrane, and under the condition of ensuring the membrane blowing stability and the quality of the membrane, the consumption of the peroxide is lowered, so that the production cost is also lowered.

The invention relates to a method for preparing tert-butyl hydroperoxide. According to the invention, the raw materials are isobutane and di-tert-butyl peroxide, and steps of catalysis, underpressure distillation and crystallization are carried out on the raw materials according to a certain proportion under high temperature and high pressure. According to the invention, the raw materials are isobutane and the di-tert-butyl peroxide with mass ratio being 1:1-3; the high temperature and high pressure condition are 140-160 DEG C and 1.5-2.5 atmospheric pressure; a catalyst is ferric potassium oxalate; the underpressure distillation condition is 0.1-0.3 atmospheric pressure, and temperature is 30-40 DEG C; the crystallization step is characterized in that the collected liquid is dissolved by distilled water at temperature of 20-40 DEG C, then is cooled to the temperature of 1-5 DEG C, is slightly stirred, and is stood for crystallization. The process flow is short, reaction byproduct is less, environment pollution and corrosion degree on production equipment are low, and product purity is high.

The invention discloses a preparation method of a polypropylene mixture. The method comprises the step of subjecting homo polypropylene and di-tert-butyl peroxide to contact reaction. The invention also provides the polypropylene mixture prepared by the method and application of the polypropylene mixture during preparation of melt blown nonwoven fabric. According to the method, the melt index of the homo polypropylene can be increased remarkably, so that the polypropylene mixture prepared by the method is suitable for preparation of the melt blown nonwoven fabric, besides, melt blown nonwoven fabric having low gram weight/unit area and high hydrostatic pressure can be produced rapidly by usage of the polypropylene mixture.

The invention discloses a novel high-hardness plastic shell composition for a capacitor. The novel high-hardness plastic shell composition is characterized by consisting of the following components in parts by weight: 35 parts of polypropylene, 15 parts of linear polyethylene, 10 parts of a high barrier film, 5 parts of polypropylene random copolymer, 5 parts of di-tert-butyl peroxide, 2 parts of cassava flour, 5 parts of modified wood plastic powder, 2 parts of tributyl citrate, 2 parts of silicone rubber, 2 parts of glycerol, 5 parts of carbon fiber, 2 parts of a rear-earth light converter, 2 parts of diphenyl silanediol, 2 parts of a plasticizer, 2 parts of silicon carbide micro powder, 2 parts of a lubricant, 2 parts of paraffin, 2 parts of vermiculite, 2 parts of sepiolite fabric, 2 parts of glass fibers, 2 parts of rear earth and 2 parts of talcum powder. The novel high-hardness plastic shell composition disclosed by the invention is simple in component and low in cost; the prepared finished product has good toughness, strong bearing capacity and high compactness, is easy to degrade and nonhazardous under a high temperature environment; meanwhile, the conventional preparation process is changed and a freezing process is increased, so that the safety of the product is improved and the product has relatively good stable performance at a relatively high temperature.

The invention discloses a preparation method of di-tert-butyl peroxide. Tert-butyl alcohol, hydrogen peroxide and a catalyst are continuously introduced into a micro-reactor, so that tert-butyl alcohol and hydrogen peroxide are subjected to a peroxidation reaction, and a material flow containing a di-tert-butyl peroxide is prepared; the material flow containing the di-tert-butyl peroxide is led out from the micro-reactor, and the di-tert-butyl peroxide is obtained through separation, washing and drying, wherein the molar ratio of tert-butyl alcohol to hydrogen peroxide is 1:2-1:2.2, and the catalyst accounts for 10-20% of the total mass of tert-butyl alcohol, hydrogen peroxide and the catalyst. The process is simple, the micro-reactor good in safety is used for continuous production, the prepared di-tert-butyl peroxide is high in reaction selectivity and good in yield, the production procedures are reduced, and the production cost is reduced.

The invention relates to a material special for preparing a lithium ion battery diaphragm and a preparation method thereof. The material consists of the following components in part by weight: 62.5 to 86 parts of polyethylene, 0.5 to 1.5 parts of di-tert-butyl peroxide, 3 to 5 parts of vinyl triethoxy silane, 10 to 30 parts of titanium dioxide whiskers and 0.5 to 1 part of antioxidant. The preparation method comprises the following steps of: mixing the polyethylene, the di-tert-butyl peroxide, the antioxidant and the vinyl triethoxy silane, performing melt blending by using a double-screw extruder and performing an in-situ grafting reaction to obtain silane-grafted polyethylene; and stirring and blending the silane-grafted polyethylene and the titanium dioxide whiskers to obtain the material special for preparing the lithium ion battery diaphragm. The vinyl triethoxy silane is grafted on a polyethylene molecular chain and an ethyoxyl silane group can further react with the titanium dioxide whiskers so that a cross-linking reaction is realized in an entire membrane system and the intensity of a polyethylene membrane is enhanced.

The invention discloses a high impact polystyrene sheath material for power cords and a preparation method thereof. The sheath material is prepared from the following raw materials in part by weight: 45-65 parts of high impact polystyrene, 20-30 parts of polypropylene, 10-15 parts of ethylene propylene diene monomer, 5-10 parts of styrene-isoprene-styrene block copolymer, 4-8 parts of paraffin oil, 3-6 parts of ethylene bis oleamide, 1-2 parts of isopropyl tri(dioctyl pyrophosphate acyloxy) titanate, 10-15 parts of talc powder, 3-5 parts of nano beryllia, 1-2 parts of zinc stearate, 4-6 parts of calcium hydroxide, 2-5 parts of low molecular polybutylene, 15-25 parts of carbon black N550, 2-3 parts of di-tert-butyl peroxide, 1.5-2.5 parts of trihydroxypropane trimethylacrylate, 10-15 parts of acetyl triethyl citrate, 5-10 parts of diphenyl-isooctyl phosphite and 15-20 parts of aid. The sheath material is good in electric insulating property, high in mechanical strength, good in toughness and high in impact resistance, has the characteristics of excellent heat, corrosion, oil and water resistance and the like and is durable, so that the sheath material has a wide application prospect.

The invention discloses a seal rubber for a valve rod of an automobile. The seal rubber comprises the following raw materials by weight: 64 to 66 parts of acrylic rubber, 14 to 16 parts of butyl rubber BK-1675N (Yanshan Petrochemical), 10 to 12 parts of butadiene-acrylonitrile rubber N240, 8 to 10 parts of chlorosulfonated polyethylene rubber TS-930 (Tosoh), 1 to 2 parts of poly-4-methy-1-amylene, 10 to 20 parts of carbon black N440, 8 to 10 parts of super wear-resisting carbon black N110, 6 to 10 parts of heavy calcium carbonate, 1 to 3 parts of hard vinyl alcohol, 1 to 2 parts of calcium stearate, 0.5 to 0.8 parts of stearic acid, 1 to 2 parts of zinc oxide, 5 to 10 parts of wollastonite in powder, 2 to 4 parts of quartz powder, 9 to 11 parts of modified iron tailings powder, 1 to 2 parts of hexamethyldisilazane, 1 to 2 parts of vulcanizing agent DTBP (Di Tert Butyl Peroxide), 3 to 4 parts of N, N'-metabenzyl bismaleimide, 1 to 2 parts of antioxidant 4010NA, 1 to 2 parts of antioxidant ODA,1 to 3 parts of aminopropyltriethoxysilane, and 14 to 16 parts of epoxidized butyl oleate. The rubber material is excellent in ozone resistance, low-temperature resistance and heat resistance, wide in operating temperature range and environment-friendly in process, and can be used for manufacturing various seal components.

The invention relates to adhesives, particularly to a preparation method of an environment-friendly adhesive. The environment-friendly adhesive is composed of the following raw materials including, by weight parts, 70-95 parts of phthalic anhydride, furfuryl alcohol extracted from natural plant, triethylene glycol, pentanediol, butantriol, zinc oxide, magnesium oxide, chloroprene rubber and elastic rubber, 2-3 parts of softening oil, 20-30 parts of dimethyl carbonate, benzoyl peroxide, ethyl acetate, emulsifier and flour, 5*10-5-9*10-5 parts of nano silver, and fire retardant, wherein the elastic rubber is composed of first elastic rubber and second elastic fiber which are mixed at a weight ratio of 1-3:1. The preparation method of the second elastic rubber comprises heating polyvinyl alcohol solution and waterborne polyurethane water solution, cooling the mixture to 30-50 DEG C and then adding acrylate into the mixture; then adding potassium hydroxide into the mixture and heating the mixture; then adding cementum protein, abietin and plant phenols extracted from natural plant for reaction; then adding sodium benzoate, di-tert-butyl peroxide and the ethyl acetate and mixing the reactants to obtain the environment-friendly adhesive. The environment-friendly adhesive is good in bactericidal activity and high in stability, dispersibility and adhesiveness.

The invention discloses a low-temperature-resistant impact-resistant PVC (polyvinyl chloride) pipe material easy to machine. The low-temperature-resistant impact-resistant PVC pipe material easy to machine comprises , by weight, 60 to 80 parts of PVC, 20 to 40 parts of modified thermoplastic polyurethane elastomer, 4 to 6 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, 15 to 20 parts of silane coupling modified kaolin, 20 to 40 parts of silane coupling modified magnesium hydroxide, 8 to 12 parts of organic phosphine, 10 to 15 parts of epoxidized methyl linoleate, 20 to 25 parts of triethyl citrate, 1 to 3 parts of dicumyl peroxide, 0.5 to 1.5 parts of di-tert-butyl peroxide, 0.5 to 1.5 parts of dibutyltin dilaurate, 3 to 5 parts of organic tin stabilizer, 1 to 2 parts of calcium stearate, 2 to 3 parts of barium stearate, 1 to 2 parts of anti-aging agent AW, 0.5 to 2 parts of anti-aging agent RD, 3 to 5 parts of silicone powder, 2 to 4 parts of paraffin and 2 to 4 parts of titanium dioxide. The low-temperature-resistant impact-resistant PVC pipe material is easy to machine, resistant to low temperature and high in impact resistance.

The invention discloses a modified acrylic resin for preparing artificial colored sand and a preparation method of artificial colored sand, and relates to the field of artificial colored sand. The modified acrylic resin for preparing the artificial colored sand consists of 27-33 parts of n-butyl acetate, 7-15 parts of propylene glycol monomethyl ether acetic ester, 0.9-4 parts of methacrylic acid, 8-13 parts of butyl acrylate, 10-15 parts of methyl methacrylate, 5-15 parts of methacrylic acid butyl ester, 10-15 parts of hydroxyethyl methylacrylate, 2-10 parts of hexafluorobutyl acrylate, 2-10 parts of tertiary carbonate glycidyl ester and 1-3 parts of di-tert-butyl peroxide. By introducing fluorine monomer into the acrylic resin and grafting certain tertiary carbonate glycidyl ester, the weather resisting properties such as the adhesion property, the hardness, the acid-alkali resistance of the resin are remarkably improved. The detection shows that the artificial colored sand can meet or even exceed various properties of ordinary colored sand and is good in weather resisting property, and thus really stone paint is diverse in color.

The fuel additive for homogeneous premixed compression ignition engine belongs to the field of fuel additive technology. The homogeneous premixed compression ignition engine has the demerits of easy causing fire at low load, easy knocking at high load and narrow running operation condition range, and adopting additive is one simple solution to the demerits. The fuel additive of the present invention includes igniting promoter di-tert-butyl peroxide 5-30 wt%, tert-butyl hydroperoxide 5-35 wt%, superox 736 2-20 wt%, dicumyl peroxide 2-20 wt%, cumene hydroperoxide 2-20 wt%, antidetonator ethanol 5-30 wt%, methanol 1-10 wt%, methyl tertiary pentyl ether 5-20 wt%, and ferrocene 1-10 wt%. The fuel additive of the present invention can expand the running range of HCCI engine effectively, and lower the exhaust of HC and CO.

The invention discloses an impact and cracking resistant material for combustion gas pipelines. The material comprises, by weight, 40-60 parts of high density polyethylene, 30-40 parts of ethylene propylene diene monomer, 20-30 parts of acrylonitrile-butadiene-styrene copolymer, 30-40 parts of carbon black, 1.8-2.6 parts of modified montmorillonite, 0.9-0.13 parts of modified carbon nanotubes, 20-30 parts of nonyl cyclohexanedicarboxylate, 20-30 parts of methyl acetylricinoleate, 15-20 parts of ammonium polyphosphate, 10-15 parts of zinc borate, 5-8 parts of red phosphorus, 1-3 parts of di-tert-butyl peroxide, 0.4-0.6 parts of dimethylaminopropylamine, 0.1-0.3 parts of a promoter CZ, 2-4 parts of a Ca/Zn composite stabilizer, 1-2 parts of zinc stearate, 1-2 parts of butylmercaptooxo stannane, 0.5-1 part of an antioxidant D, 0.3-0.5 parts of an antioxidant RD and 1-3 parts of polyethylene wax. The material has the advantages of good impact resistance and high toughness.

The invention discloses a dibutyl itaconate modified acrylic resin, which is characterized by comprising the following components by mass: 20-40% of xylene, 5%-15% of butyl acetate, 5-8% of acrylic acid, 15%-25% of styrene, 10%-15% of methyl methacrylate, 15%-25% of butyl acrylate, 1%-5% of dibutyl itaconate, 1-3% of acrylamide, and 1-2% of di-tert-butyl peroxide. The dibutyl itaconate modified acrylic resin provided by the invention has good wettability to organic pigments and fillers, has no influence to the paint film, and also greatly improves the comprehensive properties of resin.

Sensors, sensing systems and sensing methods of the invention provide for detection of peroxides, including for example, vapor-phase H₂O₂ and organic peroxides such as di-tert-buty\ peroxide. A sensor and sensing method of the invention uses at least two phthalocyanines, one of which exhibits an oxidation reaction with peroxides and the other of which exhibits a reduction reaction with peroxides. A peroxide is readily identified by a sensor of the invention when one of the at least two phthalocyanines exhibits increased resistance to current flow and the other of the at least two phthalocyanines exhibits decreased resistance to current flow.

The invention discloses a treatment and recycling process for production wastewater of 1,1-di-tert-butyl peroxide-3,3,5-trimethyl-cyclohexane (an initiator CH335). In the process, the production wastewater is collected directly from a drain outlet of a production device and is subjected to stabilized treatment, and after the danger of severe decomposition of organic peroxides in the wastewater due to heating is eliminated basically, tertiary butanol, tert-butyl peroxide and sulfuric acid are separated and recovered from the wastewater, wherein the recovered tertiary butanol, tert-butyl peroxide and sulfuric acid can be recycled repeatedly in the production process. Low-concentration wastewater is separated while chemical raw materials are recovered, and after the separated low-concentration wastewater is subjected to hydrolysis-contact oxidization and C-Fe micro-electrolysis decoloration, the major index of the drained wastewater meets the requirement on water pollutant emission limits of newly built enterprises in 'Discharge Standards of Water Pollutants for Chemical Synthesis Pharmaceutical Industry (GB21904-2008)'.