84 results about "Di-t butyl peroxide" patented technology

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.

The invention discloses a method for preparing carboxylate compounds. According to the method, an ionic iron (III) complex which has a molecular formula of [(tBuNCH2CH2NtBu)CH][FeBr4] and contains 1,3-di-tert-butyl-imidazoline cations is taken as a catalyst, di-tert-butyl peroxide is taken as an oxidizing agent, and corresponding benzyl ester carboxylate or allylic ester carboxylate is synthesized by respectively carrying out oxidative cross-coupling on carboxylic acid and alkylbenzene, methyl heterocyclic aromatic hydrocarbon and allyl hydrocarbon compounds; applicable carboxylic acid substrates relate to aliphatic carboxylic acid, aromatic carboxylic acid and heterocyclic carboxylic acid, and applicable hydrocarbon compounds relate to benzyl type compounds and allyl type compounds. The method is the first case for preparing carboxylate by virtue of the oxidative cross-coupling of carboxylic acid, alkylbenzene, methyl heterocyclic aromatic hydrocarbon and allyl hydrocarbon compounds through iron-based catalysts; compared with literature reports, the method has the advantages that the catalytic efficiency is relatively high, and the substrate applicability is relatively wide.

The invention discloses a method for synthesizing gamma-undecalactone, which belongs to a synthesis technology of the gamma-undecalactone. The method takes n-octanol as a solvent, boric acid or zinc bromide as a catalyst, acrylic acid as a raw material and di-t-butyl peroxide or dibenzoyl peroxide as an initiator, and comprises the following steps: firstly, adding partial n-octanol and the catalyst into a reaction kettle to be mixed and heated; secondly, mixing the remaining n-octanol, the initiator and the acrylic acid and dipping the mixture into the reaction kettle; thirdly, making the mixture react for a period; and finally obtaining reaction liquid containing the gamma-undecalactone. The method has the advantages that the reaction is carried out at normal pressure, byproducts of tert-butyl alcohol are easy to discharge from a system during the reaction process, and simultaneously the equipment used by the method is simple, the synthesis cost is low and the yield of the gamma-undecalactone is high.

The invention discloses a method for preparing acrylate rubber through continuous solution polymerization and devolatilization extrusion, belonging to synthetic technique of polyacrylate rubber and solving the problems in conventional preparation methods of polyacrylate rubber that the pressure during the polymerization process is high and that the solvent of the polymerisates cnnot be easily got rid of in later period. According to the method disclosed by the invention, acrylate monomer and a small amount of monomer with crosslinking active groups are taken as the raw materials to prepare polyacrylate rubber through the methods of continous solution polymerization and devolatilization extrusion in a solvent under the action of initiator. The acrylate monomer is one or the mixture of methyl acrylate, ethyl acrylate or butyl acrylate; the monomer with crosslinking active groups is epoxypropyl methacrylate; the initiator is benzoyl peroxide or di-t-butyl peroxide; and the solvent is toluene or ethyl acetate. The content of the residual volatile in the acrylate rubber prepared through the method disclosed by the invention is lower than 1% of the content of acrylate rubber.

The present invention relates to a special-purpose coating for high-density plate material and its preparation method. It is made up by mixing high-molecular film-forming material, pigment, adjuvant and solvent. It is characterized by that the main component of high-molecular film-forming material of said coating is formed from (by weight portion) 40-50 portions of butyl methacrylate (BMA), 30-40 portions of styrene (ST), 10-20 portions of hydroxyethyl methacrylate (HEMA), 0.1-0.5 portion of methyl acrylic acid (MAA), 1-5 portions of initiating agent di-t-butyl peroxide (DTBP), 1-5 portions of organic silicon compound and 1-5 portions of chlorinated polypropylene. The described mixed solvent includes 60-90 portions of butyl acetate, 20-28 portions of cyclohexanone, and 1-6 portions of limonene, in which the fire-resisting agent and UV-ray absorbing agent can be added.

The invention provides an O-shaped seal ring for an automobile fuel pump and a manufacturing process thereof, and solves the technical problems that a conventional rubber seal ring cannot be normally used in low-temperature or high-temperature environments, is poor in high-low temperature resistance and has no manufacturing process. The O-shaped seal ring for the automobile fuel pump comprises a circular-ring-shaped seal ring body, wherein a sealing lip is arranged in the middle of the seal ring body and extends outwards; the seal ring body and the sealing lip adopt an integral structure; the seal ring body comprises butadiene-acrylonitrile rubber, sulfur, an antiager mercaptobenzimidazole, zinc oxide, stearic acid, paraffin oil, alumina powder, dibutyl phthalate, an acid-base balance agent, and a vulcanization accelerator di-t-butyl peroxide. The invention also provides a manufacturing process of the O-shaped seal ring. The O-shaped seal ring has the advantages of good high-low temperature resistance and high yield.

The invention discloses a methanol gasoline additive which is prepared from the following raw materials in parts by weight: 6-14 parts of di-tert-butyl peroxide, 3-8 parts of naphtha, 5-9 parts of hydroquinone, 4-7 parts of propyl alcohol, 6-11 parts of acetylacetone, 3-9 parts of methyl tertiary butyl ether, 4-6 parts of benzotriazole, 1-5 parts of octadecylamine, 4-7 parts of liquefied petroleum gas, 2-6 parts of butane, 3-5 parts of carbon 12, 3-5 parts of ethanol, 4-9 parts of diethyl ether and 1-5 parts of isopropyl alcohol. The methanol gasoline additive disclosed by the invention has the beneficial effects of improving the power, simultaneously increasing the utilization rate of fuel oil and reducing pollution to air.

The invention discloses an application of an iron (III) complex containing 1,3-di-tert-butyl imidazole cations in synthesis of aryl benzyl ether compounds, and particularly relates to a method for synthesizing corresponding aryl benzyl ether compounds by taking di-tert-butyl peroxide as an oxidizing agent and carrying out oxidative coupling reaction on phenolic compounds and toluene compounds. According to the method, the iron (III) complex is used as the catalyst for the first time, and oxidative coupling of the phenolic compound and the toluene compound is realized. The method is the first oxidative coupling reaction of phenolic compounds and benzyl C(sp3)-H bonds, and a new method is provided for synthesizing aryl benzyl ether compounds. Compared with an existing synthesis method, the method provided by the invention avoids using toxic and polluting halogenated hydrocarbon and strong base, has better atom economy, and conforms to the development concept of green synthetic chemistry.

The invention discloses a high temperature-resisting anti-corrosion cable for a ship. The high temperature-resisting anti-corrosion cable comprises a conductor and a jacket layer sleeved on the outer side of the conductor, wherein the jacket layer comprises the following raw materials in parts by weight: 25-35 parts of fluorinated silicone rubber, 70-90 parts of chlorinated rubber, 1.4-2 parts of 202 resin, 1.4-2.2 parts of di-tert-butyl peroxide, 25-35 parts of shell powder, 25-45 parts of modified asbestos fiber, 1.5-2.5 parts of polyphenylene sulfide, 4-6 parts of phenyl triethoxy silane, 0.6-1 part of coal tar, 0.4-0.8 part of epoxidized soybean oil, 0.4-0.8 part of epoxy rice bran butyl oleate, 1-2 parts of disproportionated rosin, 4-10 parts of saw dust, 1.5-2.5 parts of gamma-(ethylenediamine) propyl methyl dimethoxy silane, 1-1.6 parts of butyl titanate and 1.5-3.5 parts of maleic anhydride. The high temperature-resisting anti-corrosion cable for the ship, provided by the invention, has excellent corrosion resistance and is easy to degrade after being abandoned.

The invention relates to a cold-resistant and antibacterial plastic which comprises components of raw materials in parts by weight as follows: 100 parts of PVC (polyvinyl chloride), 15 parts of cylindrin, 6 parts of modified calcium chloride, 5 parts of talcum powder, 3 parts of sodium chloride, 3 parts of sodium sulfate, 3 parts of calcium sulfate, 3.5 parts of modified nano calcium carbonate, 2.5 parts of di-tert-butyl peroxide, 1.5 parts of furocoumarin, 1.5 parts of beta-sitosterol, 1 part of lactone of bamboo leaves and 1 part of phenolic ketone of bamboo leaves. The plastic comprises natural antibacterial ingredients, has a durable antibacterial effect and is resistant to low temperature, and the cold-resistant temperature can be up to subzero 60 DEG C.

The invention discloses an environmental-friendly waterproof cable material for a computer. The environmental-friendly waterproof cable material is prepared from the following components in parts by weight: 50-80 parts of polytetrafluoroethylene, 1-2 parts of nilox resin, 0.4-0.9 part of polyphenylene sulfide, 0.5-1.5 parts of polybenzoate, 1-3 parts of magnesium stearate, 0.5-1.2 parts of antimonous oxide, 1-2 parts of C5 petroleum resin, 0.5-1.5 parts of coal tar, 2-8 parts of nanometer talcum powder, 10-16 parts of modified microcrystalline cellulose, 0.5-1.2 parts of di-tert-butyl peroxide, 0.5-1.2 parts of 2,4-dichloro benzoyl peroxide, 1-3 parts of maleic anhydride, 1-2 parts of gamma-(quadrol) propyl emthyl dimethoxy silane and 1-2 parts of butyl titanate. The environmental-friendly waterproof cable material achieves environmental friendliness, is good in water resistance and flame resistance and is excellent in mechanical property.

The invention discloses a polyethylene/SBR (Styrene Butadiene Rubber) coating coconut husk powder particle blending foaming material, which is prepared from the following raw material according to parts by weight: 60-80 parts of LLDPE, 20-40 parts of HDPE, 30-40 parts of SBR, 10-15 parts of potassium feldspar, 15-20 parts of water glass, 5-10 parts of coconut husk powder, 1-2 parts of benzene isopropyl tri(dioctylpyrophosphate) titanate, 5-8 parts of ammonium polyphosphate, 4-6 parts of dioctyl sebacate, 5-8 parts of phthalic acid ester, 3-5 parts of foaming agent, 1-2 parts of di-tert-butyl peroxide, 0.5-1 parts of lead sulfate tribasic, 1-2 parts of magnesium oxide, 1-2 parts of barium stearate, 2-3 parts of ethylene bis oleamide, 3-5 parts of modified tree ash, and 1-2 parts of antioxidant DLTP. The polyethylene/SBR (Styrene Butadiene Rubber) coating coconut husk powder particle blending foaming material produced in the invention is light and soft, high in strength, good in rebound elasticity, ideal in foaming effect, uniform in foaming, fine and compact, good in fire resistance, resistant to chemical corrosion, ageing-resistant and durable in use.

An implementation method of kerosene-based fuel for a scramjet engine started at a low Mach number comprises the following steps of: adding a borane triethylamine complex into a mixed fuel of 1-octene and RP-3 kerosene, and carrying out hydroboration reaction to obtain initial modified kerosene; and mixing the initial modified kerosene with di-tert-butyl peroxide serving as a free radical ignition enhancer and benzoquinone serving as a free radical stabilizer to obtain kerosene-based fuel. Starting of the scramjet engine when the incoming flow Mach number is 1.5 can be achieved through electric spark ignition, and good stability is achieved during contact with air in a normal-temperature environment. Starting and stable combustion of the scramjet engine under the low Mach number are achieved by synthesizing the kerosene-based fuel, the operation is easy, and the practicability is high.

The invention relates to an antibacterial coating which comprises the following raw materials in parts by weight: water glass, alpha-ethyl cyanoacrylate, titanium dioxide, talcum powder, cylindrin, di-tert-butyl peroxide, glyoxal, sodium hexametaphosphate, sodium chloride, sodium sulfate, ethylene glycol, borax, furocoumarin and bamboo leaf phenolic ketone. The coating contains natural antibacterial components, is lasting in antibacterial effect, strong in adhesive power and good in mould forming property, and can be widely applied to the surfaces of various objects.

A production process in which t-butyl alcohol is reacted with t-butyl hydroperoxide in the presence of a ss-form zeolite solid acid catalyst having an SiO2/Al2O3 molar ratio of from 30 to 280. By the process, di-t-butyl peroxide can be produced with high selectivity in high yield.

The invention relates to the technical field of master batch preparation, in particular to a PP flow master batch. The master batch comprises, by weight, 90-100 parts of polypropylene resin, 2.5-7.5 parts of an initiator and 0.5-1.5 parts of light calcium carbonate, wherein the flowing speed of a polypropylene resin melt is 19-27 g/10 min, and the initiator is composed of di-tert-butyl peroxide and tert-butyl hydroperoxide in the ratio of 1:(1.2-1.5). The master batch has the advantages that the PP flow master batch is applied to polypropylene thin-wall injection molding, the fluidity of the polypropylene melt is improved, and meanwhile, an injection molded polypropylene thin-wall injection molding finished product has good mechanical properties.

The present invention discloses a wear-resistant and oil-resistant rubber material for an inner sheath of a mining power cable and a preparation method for the rubber material. The wear-resistant and oil-resistant rubber material is prepared from the following raw materials in parts by weight: 26-34 parts of fluorosilicone rubber, 15-25 parts of chloroprene rubber, 13-19 parts of high-cis polybutadiene rubber, 7-13 parts of di-iso-octyl sebacate, 4-6 parts of shellac cera, 3-5 parts of sulfur dichloride, 5-8 parts of poly alpha olefin, 2-3 parts of zinc oxide, 3-4 parts of stearic acid, 2-3 parts of an antioxidant ODA, 1-2 parts of an antioxidant AW-66, 15-20 parts of highly wear-resistant carbon black, 10-15 parts of nano-diamond, 3-5 parts of di-t-butyl peroxide, 1-2 parts of an accelerant ETU, 1-2 parts of an accelerant TMTD, 0.5-1 part of an accelerant ZDC, 10-15 parts of electrolytic aluminum slag and 16-22 parts of flame retardant particles. According to the material prepared by the present invention, the oil resistance and wear resistance are greatly improved, and meanwhile the mechanical property is not influenced.

The invention discloses a liquid nano combustion material and a preparation method thereof. The liquid nano-combustion material is prepared from the following raw materials in parts by weight: 20.0 to 40.0 parts of gasoline, 40.0 to 80.0 parts of methanol, 0.5 to 2.5 parts of modified nano nickel powder, 0.3 to 1.0 part of calcium alkyl salicylate, 5.0 to 8.0 parts of di-tert-butyl peroxide, 1.0to 2.0 parts of tert-butyl dimethyl chlorosilane, 0.05 to 0.10 part of diethylene glycol monoethyl ether, 0.01 to 0.04 part of dibenzoyl peroxide, 2.0 to 4.0 parts of cyclohexylamine and 1.5 to 4.5 parts of catalytic combustion improver. According to the liquid nanometer combustion material prepared by the invention, the compatibility of all the components is good, the components are synergistic,the combustion heat value of the liquid nanometer combustion material can be increased, energy waste is reduced, environmental pollution is reduced, and resources are saved.

The invention discloses a preparation method of di-tert-butyl peroxide. The preparation method comprises the following steps of: adding hydrogen peroxide and sulfuric acid into a reaction kettle, sufficiently mixing the hydrogen peroxide and the sulfuric acid under an ice bath condition to obtain a mixed solution, and continuously stirring the mixed solution for 30 minutes; dropwise adding tert-butyl alcohol after violently stirring the mixed solution, controlling the dropwise adding speed, and ensuring that the reaction temperature does not exceed 5 DEG C; after dropwise adding the tert-butylalcohol, naturally heating the solution to room temperature, and continuously stirring the solution for 4 hours to obtain a reaction crude product solution; and making the solution stand still, introducing the solution into a liquid separation tank for liquid separation to obtain an upper-layer organic phase, washing the organic phase with a 30% NaOH solution, washing the organic phase with water, and drying the organic phase with anhydrous MgSO4 to obtain stimulated colorless liquid which is di-tert-butyl peroxide. The preparation method has the advantages of simplified operation, higher yield, shortened reaction time, effectively controlled reverse reaction decomposition and raw material-saving performance/ Waste gas mother liquor is recycled, so that raw materials are saved, the production cost is reduced; and the discharge of the waste liquor is reduced, the subsequent treatment cost is saved, and the environmental protection is achieved; and the sustainable development is realized, and the production profits of enterprises are greatly improved.

The invention discloses shielding and protecting polyester adhesive tape. The adhesive tape mainly solves the problem of existing protecting adhesive tape that adhesive failure occurs often due to temperature and bonding time. The adhesive tape comprises a base material layer, a mold release agent layer arranged over the base material layer, and an adhesive layer arranged under the base material layer, wherein the adhesive layer is formed by a silicone adhesive, and the base material layer is prepared from, by weight, 70-80 parts of polyethylene terephthalate, 1-5 parts of polymethyl triethoxy silane, 1-5 parts of vinyl phenyl silicone oil, 5-10 parts of silicone and 1-5 parts of di-tert-butyl peroxide. The adhesive tape has high tensile resistance and adhesive force, and adhesive failure does not occur after long-time bonding at high temperature.