609 results about "Tert-Butyl hydroperoxide" 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 present invention relates to a method for refining catalytic liquefied petroleum gas, in which catalyzed liquefied petroleum gas by alconol-amine method removing hydrogen sulfide process is operated by hydrolysis carbonyl sulfur process by passing through carbonyl sulfur hydrolysis activator bed layer, such that carbonyl sulfur hydrolysis generates sulfureted hydrogen and carbon dioxide; then it passes through the desulfurizer bed layer to operate hydrogen sulfide removing process, the preparation of reaction of the hydrogen sulfide and the desulfurizer is chemically absorbed on the desulfurizer; at last, liquid oxygen supplying agent having effective component of tert-butyl hydroperoxide is applied into the catalyzed liquefied petroleum gas, then it is processed by transformation mercaptan by passing through the double effects activator bed layer, under the effect of the double effects activator, the tert-butyl hydroperoxide is hydrogen peroxide decomposed to release fresh state oxygen, and the mercaptan is oxygenated to bisulfide; the activate component of the double effects activator is compound of manganic.

The invention discloses a water resistant whiting emulsion pressure sensitive adhesive synthesis method, and a water resistant whiting emulsion pressure sensitive adhesive comprises the following components by weight: 20-60% of a soft monomer; 1-40% of a hard monomer; 1-5% of an emulsifier and the balance of water. The emulsifier is selected from allyloxy nonylphenol propanol polyoxyethylene ether ammonium sulfate, allyloxy nonylphenoxy propanol polyoxyethylene ether ammonium sulfate, allyloxy nonylphenoxy propanol polyoxyethylene ether, and a mixture of allyloxy nonylphenol propanol polyoxyethylene ether ammonium sulfate, allyloxy nonylphenoxy propanol polyoxyethylene ether ammonium sulfate and allyloxy nonylphenoxy propanol polyoxyethylene ether. The method comprises the following steps: (I) mixing the emulsifier and the monomer basically without stirring; (II) adding part of an initiator at 78 to 82 DEG C into a reaction kettle with water, adding dropwise the monomer mixture, after addition of the monomer mixture for 30 minutes, adding dropwise the remaining initiator solution for 2 to 5 hours, controlling the reaction temperature at 80-85 DEG C, and performing thermal insulation for 0.5 to 1 hour; and (III) after thermal insulation, reducing the temperature to 50 to 70 DEG C, adding tert-butyl hydroperoxide and methylsodium hydrosulfite aqueous solution, continuing to react for 0.2-1 hour, and adjusting the emulsion pH value to 6-8 when the temperature is reduced to 40 to 50 DEG C.

The invention discloses a normal temperature self-crosslinking acrylic emulsion and a preparation method thereof. The acrylic emulsion is obtained by radical-initiated polymerization of the following raw materials by weight: 50 to 52 parts of deionized water, 2 to 3 parts of emulsifier RN-30, 12 to 16 parts of butyl acrylate, 22 to 28 parts of methyl methacrylate, 0.5 to 1 part of hydroxyethyl acrylate, 0.3 to 0.6 part of acrylic acid, 0.4 to 0.8 part of vinyltrimethoxy silane, 0.1 to 0.3 part of sodium bicarbonate, 0.2 to 0.4 part of ammonium persulfate, 1 part to 2 parts of diacetone-acryloamide, 0.5 part to 1.5 parts of adipic dihydrazide, 0.1 to 0.14 part of the oxidizing agent tert-butyl hydroperoxide, 0.1 to 0.14 part of the reducing agent rongalite and 0.3 to 0.6 part of ammoniacalliquor. The normal temperature self-crosslinking acrylic emulsion provided in the invention has better water resistance and oil resistance and greatly enhances the problems of after tack at high temperature and embrittlement at low temperature under the condition that the quality of a final product is guaranteed to be no worse than the quality of products of a same kind.

The invention discloses a preparation method of tert-butyl hydroperoxide. Under oxidation reaction conditions, tert-butyl alcohol, an oxidant, a solvent and a catalyst are subjected to mixed contact. The method is characterized in that the catalyst is a soluble zinc salt modified heteroatom molecular sieve.

The invention relates to a method for synthesizing epoxyphenylethane by directly oxidizing styrene. The method is characterized by taking Ag-gamma-ZrP as a catalyst, taking tert-butyl hydroperoxide as an oxygen source, taking acetonitrile as a solvent, and directly epoxidizing the styrene to synthesize the epoxyphenylethane in a nitrogen atmosphere at the temperature of 70-90 DEG C. The maximum conversation rate of the styrene is up to 92%, and selectivity of the epoxyphenylethane is up to 96%.

The invention discloses an acrylate copolymer emulsion, and belongs to the technical field of aqueous coatings. The acrylate copolymer emulsion comprises, by weight, 450-550 parts of deionized water, 1-2 parts of an anionic surfactant, 5-8 parts of a reactive emulsifier, 3-15 parts of hydroxypropyl acrylate, 50-160 parts of methyl methacrylate, 20-75 parts of butyl acrylate, 200-410 parts of styrene, 5-10 parts of methacrylic acid, 3-10 parts of an adhesion function monomer, 2-9 parts of a cross-linking monomer, 3-10 parts of a cross-linking agent, 0.1-3 parts of an antifoaming agent, 0.8-2 parts of an initiator, 3-5 parts of ammonia water, 0.8-2 parts of an antiseptic, 0.1-1 part of tert-butyl hydroperoxide and 0.1-0.8 parts of sodium bisulfate. The invention also discloses an aqueous industrial anticorrosive coating adopting the acrylate copolymer emulsion as a film forming substance. The coating has the advantages of high adhesion to a substrate, high water resistance and high salt spray resistance.

The invention relates to a preparation method of single acyl or two acyl phosphine oxide and single acyl or two acyl sulfur phosphine compound, in particular to a preparation method of the 2,4,6-trimethylbenzene formacyl-diphenyl phosphine oxide of the photoinitiator. The addition reaction is carried out between Trimethyl benzaldehyde and diphenyl phosphorus chloride and then the mixture is oxidized by tert-butyl alcohol peroxide. The invention adopts the addition reaction of aldehyde and halogenated phosphorus and replaces the original process of acyl chloride and halogenated phosphorus, and has the advantages of greatly shortening the preparation procedures, low cost, easy operation and quick production. The compound prepared by the invention has more than 98 percent of the 2,4,6-trimethylbenzene formacyl-diphenyl phosphine oxide and can be served as the photoinitiator for solid for producing the solidification product with the performance of paint, varnish, porcelain glaze, paint, pigment or ink, and can better satisfy the increasing market demand.

The invention provides water-based ink resin for PVC furniture membranes and a preparation method of the water-based ink resin. Raw materials of the water-based ink resin for the PVC furniture membranes comprise an anionic emulsifier, a nonionic emulsifier, a pH buffering agent, an initiator, a chain transfer agent, a methyl methacrylate monomer, a methyl acrylate monomer, a glycidyl methacrylate monomer, tert-butyl hydroperoxide, rongalite, a preservative, and deionized water; based on a design concept of ''polymer welding'', an emulsion-type resin which is well compatible to PVC and of which glass transition temperature is similar to that of the PVC is prepared and designed, wherein the main body of the emulsion-type resin is poly(methyl methacrylate-methyl acrylate), and the high peeling strength of the water-based ink resin and the PVC furniture membranes is guaranteed; and meanwhile, a characteristic that the PVC furniture membranes have a large number of plasticizers is combined, a proper amount of the glycidyl methacrylate monomer with epoxy groups is introduced to a copolymerization monomer system, and therefore the plasticizer migration resistant ability of the water-based ink resin is improved.

The invention discloses self-crosslinked fluorosilicate acrylic resin and a preparation method thereof. The self-crosslinked fluorosilicate modified acrylic resin has the structural formula shown in the specifications, wherein n=4, 6 and 8, and the molecular weight is 60,000-80,000; X refers to a (meth)acryloxy functional group or an alkenyl-containing silane coupling agent; and X has the structural formula shown in the specifications, wherein R is -CH3 or -CH2CH3. The preparation method comprises the following steps of: adding a solvent into a reaction container, and heating to the temperature of between 90 and 100DEG C; uniformly mixing methyl methacrylate, acrylic acid, ethyl acrylate, hydroxyethyl acrylate, a silane coupling agent, perfluoroalkylethyl acrylate and tert-butyl hydroperoxide, and dripping for 2 to 3 hours; keeping the temperature for 3 to 4 hours; and reducing the temperature to 40-60DEG C and discharging. The prepared resin has high weatherability, high chemical resistance, high-temperature resistance, good mechanical properties and glossiness, and high insulativity; and the preparation method has simple process steps and is easy to implement.

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 discloses a high-fire resistance modified polyethylene tube material. The high-fire resistance modified polyethylene tube material comprises high density polyethylene, silicone resin, polypropylene, an ethylene-propylene-diene monomer, maleic anhydride-grafted polyphenyl ether, tert-butyl hydroperoxide, ferriferrous oxide, barium sulfate, nanometer calcium carbonate, calcium silicate whisker, polyacrylonitrile fibers, an antistatic agent, a lubricant, an anti-oxidant and a fire retardant. The fire retardant is prepared by adding polyethylene, silicone rubber, maleic anhydride and benzoyl peroxide into a mixture, carrying out mixing to obtain a uniform mixture, adding the mixture into an extruder, carrying out primary granulation to obtain a modifier, adding aluminum hydroxide nanometer fibers, carbon nanotubes, zinc borate, magnesium hydroxide, powdered steatile and the modifier into the extruder, carrying out secondary granulation and mixing the granules, triphenyl phosphate, hydroquinol bis(diphenylphosphate) and polysulfonyldiphenylene phenyl phosphonate to obtain a uniform mixture. The high-fire resistance modified polyethylene tube material has the advantages of high strength, good pressure resistance, heat resistance, flame resistance and long service life.

The invention discloses a compound plug removal technological method for an offshore oil field injection well. The compound plug removal technological method for the offshore oil field injection well is characterized by comprising the following steps of forwards extruding stratum pretreating agent, closing the well for 24 hours, forwards extruding prepad fluid, forwards extruding spacer fluid, forwards extruding oxidative plug removable agent, closing the well for 24 hours, forwards extruding processing agent, forwards extruding postpad fluid, forwards extruding displacing liquid, and finishing construction. The stratum pretreating agent comprises cocoamidopropyl betaine, coconut diethanol amine and sodium lignin sulfonate, the mass ratio among cocoamidopropyl betaine, coconut diethanol amine and sodium lignin sulfonate is 1:1:1, and the use mass concentration is 15%. The prepad fluid is hydrochloric acid, and the mass concentration is 10%. The spacer fluid comprises a compound of tartaric acid, fatty alcohol ether sulfosuccinic acid solution, the mass ratio between tartaric acid and fatty alcohol ether sulfosuccinic acid solution is 2:1, and the mass concentration is 45%. The oxidative plug removal agent comprises a compound of calcium oxide and tert-Butyl hydroperoxide, the mass ratio of calcium oxide and tert-Butyl hydroperoxide is 3:1, and the mass concentration is 35%. The processing agent comprises fluoboric acid, wherein the mass concentration is 13%. The postpad fluid comprises hydrochloric acid, wherein the mass concentration is 10%. The displacing liquid is water injected and allocated on site.

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 vinyl acetate wood adhesive and a preparation method thereof, and relates to the field of high polymer chemistry. The vinyl acetate wood adhesive is prepared by taking vinyl acetate and vinyl versatate as mixed monomers, diacetone-acryloamide and carbonic acid dihydrazide as cross-linking agent, copolymer emulsion of vinyl acetate and ethylene as seed emulsion, polyethylene biformaldehyde as a protecting adhesive, tert-butyl hydroperoxide and zinc formaldehyde sulfoxylate as initiators and sodium bicarbonate as a reducing agent by using a seed emulsion polymerization method. The vinyl acetate wood adhesive disclosed by the invention has the advantages of high adhesion strength, good water resistance, low glass transition temperature and good stability, can be used as an adhesive for splicing wood and processing artificial plates and can be also used in the fields of waterproofness and packaging.

The invention discloses a method for preparing 1,6-adipaldehyde through selective oxidation of cyclohexene. A catalyst is a cobalt complex of an isosteviol derivative. The method comprises the steps as follows: adding a solvent, cyclohexene, a catalyst and a cocatalyst to a reaction kettle, introducing oxygen, keeping the pressure of the reaction kettle at 0.2-0.6 MPa, and conducting a reaction atthe temperature of 120-170 DEG C for 60-300 min to obtain 1,6-adipaldehyde. Compared with existing methods, the method has the advantages that free radicals produced through decomposition of the cocatalyst tert-butyl hydroperoxide act with oxygen to produce oxygen radicals, the catalyst cobalt complex of the isosteviol derivative acts with double bonds in cyclohexene, so that the reaction activity is higher, and activated double bonds and free radicals react to produce 1,6-adipaldehyde. The method is environmentally friendly, and 1,6-adipaldehyde is good in selectivity and high in yield.

The invention discloses a making technique of entikawei monohydrate as antiviral drug, which comprises the following steps: reacting cyclopentadiene monomer and sodium hydride protected by inert gas to make sodium cyclopentadiene; oxidizing through tert-butyl hydroperoxide; reacting with benzyl halogen under alkaline to obtain compound 3 to react with 6-benzyloxy guanine acted by alkaline to obtain compound 4; reacting with amino protective group to prepare compound 5; oxidizing through DMP tert-butanol oxidizing system to obtain ketone compound 6 to generate methylene compound 7 acted by Zn/TiCl4/CH2Br2; stripping protective product under acid condition to produce compound 8; recrystallizing to obtain the product.

Formaldehyde-free preimpregnation glue is provided. The glue is characterized by comprising following raw materials by weight: 0.713 parts of ammonium bicarbonate, 4.65 parts of ammonia water having aconcentration of 25%, 2.558 parts of ammonium persulfate, 0.775 part of tert-butyl hydroperoxide the concentration of which is 70%, 4.2 parts of an emulsifier CO436, 0.775 part of sodium hydroxymethanesulfinate the concentration of which is 95%, 0.9 part of a defoamer, 1.24 parts of a surfactant OT-75, 5.6 parts of acrylic acid, 12.5 parts of methyl acrylate, 200 parts of styrene and 340 parts ofbutyl acrylate. Beneficial effects of the glue are that 1) raw materials are formaldehyde-free, a production process is formaldehyde-free, and the glue is formaldehyde-free; 2) preimpregnated decorative paper and veneer prepared by utilizing the glue are formaldehyde-free; 3) decorative paper prepared by utilizing the glue is soft and can be rolled and cut; 4) decorative paper prepared by utilizing the glue, when compared with traditional melamine-urea-formaldehyde impregnated bond paper, is not sticky due to damp, and can be stably stored for 1 year or longer; and 5) the glue has stable properties and can be stored at room temperature for 1 year or longer.

The invention relates to a preparation method for a mixture containing tert-butyl hydroperoxide, which belongs to the technical field of organic peroxide preparation. The method includes the following steps that: (A) tert-butyl alcohol and sulfuric acid are added into a first reactor and stirred for reaction and the reaction temperature is controlled, so that tert-butyl hydrogen sulfate esterified solution is obtained; (B) hydrogen peroxide and recycled mother solution are added into a second reactor and stirred and the stirring temperature is controlled, so that mixed solution is obtained; (C) the tert-butyl hydrogen sulfate esterified solution and the mixed solution are added into a third reactor and stirred for reaction and the reaction temperature is controlled, so that reaction product is obtained; (D) the reaction product is led into a liquid-separating tank to separate liquid, so that upper oleic-phase mixture containing the tert-butyl hydroperoxide and lower aqueous-phase mother solution containing sulfuric acid and hydrogen peroxide are obtained, moreover, the lower aqueous-phase mother solution containing the sulfuric acid and the hydrogen peroxide returns to the step B and is mixed with the hydrogen peroxide, and the upper oleic phase is the mixture containing the tert-butyl hydroperoxide. The invention prevents the discharge of industrial sewage, so that the environment is protected, and energy and materials are saved, so that the preparation cost is reduced.

The invention provides a preparation method of beta-arone substituted sulfone compounds. In the method, olefin azide and sulfonyl hydrazide are used as start raw materials; and in an organic solvent, potassium iodide serves as a catalyst while tert-butyl hydroperoxide serves as an oxidizing agent, and the beta-arone substituted sulfone compounds are generated by reactions, wherein the reaction temperature is room temperature, and the reaction time is 2-4 hours. The preparation method provided by the invention has the advantages that the design is reasonable, the raw materials are easily available, no metal catalyst is involved, the reaction conditions are mild, high-temperature backflow is not required, the method is safe and convenient, the yield is high, and the yield of most products is over 70%. The preparation method provided by the invention is an easy-to-operate method for quickly establishing beta-arone substituted sulfone compounds in a mild and diversified manner, wherein the two start raw materials can be obtained by a one-step method, and the reaction raw materials are cheap and easily available. The general formula I of the beta-arone substituted sulfone compounds is shown in the specification.

The invention discloses a method for preparing benzaldehyde by using cyclodextrin polymer to catalyze the oxidation of cinnamic aldehyde or cinnamon oil. The method comprises the following steps: taking the cinnamic aldehyde or the cinnamon oil as raw materials, adopting the cyclodextrin polymer as a catalyst, taking one of hydrogen peroxide, sodium hypochlorite or tert-butyl hydroperoxide as an oxidizing agent, taking water as a solvent, controlling the reaction temperature to be 30-90 DEG C, after finishing the reaction, using an ester solvent, methyl alcohol, acetone or acetonitrile to conduct extraction, and obtaining the benzaldehyde by decompression and concentration. The method has the advantages of simple technique, mild reaction condition, low cost, high yield, high natural levelof the benzaldehyde, environment friendliness, easily-separable catalyst with reusability and the like.

The invention discloses a hydrolysis-resistant cable material for an automobile and a preparation method of the hydrolysis-resistant cable material. The hydrolysis-resistant cable material is prepared from the following raw materials, by weight part: 45-60 of ethylene propylene diene monomer rubber, 22-34 of tetrafluoroethylene-propylene rubber, 9-14 of rectorite powder, 5-10 of C5 hydrogenated petroleum resin, 2-3 of tert-butyl-hydroperoxide, 1.5-2.5 of basic lead carbonate, 3-5 of polyparadinitrosobenzene, 4-8 of dibutyl sebacate, 2-3 of magnesium oxide, 1-2 of zinc stearate, 3-6 of disproportionated rosin, 2.5-4.5 of N-ethyl-p-toluenesulfonamide, 12-17 of a composite flame retardant agent, 5-10 of spherical silicon powder, 1-2 of an accelerant PPD, 1-2 of an accelerant ZBPD, and 1-2 of an antioxidant 2246. The prepared cable material has excellent hydrolysis resistance, so that the electric wires and cables of the automobile can be effectively prevented against hydrolysis. The cable material can maintain excellent properties after continuously used in high pressure and high temperature, and has good electrical insulation property, mechanical strength, corrosion resistance, abrasive resistance, and thermal resistance.

The invention relates to an ethylene tetramerization catalyst composition which comprises diphosphorus ligand shown in formula I, a transition metal compound, an aluminum-containing promoter and tert-butyl hydroperoxide. The invention further provides an ethylene tetramerization method. The catalyst composition provided by the invention is applied to ethylene tetramerization, is high in reaction activity, is capable of producing 1-octylene with high selectivity, and the selectivity of 1-octylene is 74% or higher.