35 results about "Isopropyl benzene hydroperoxide" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.