464 results about "Anti oxidant" patented technology

The application discloses a preparation method of a composite antioxidant and application thereof, and belongs to the field of high polymer materials. In the application, a ring octene and a silicon-containing cyclic olefin monomer are subjected to metathesis copolymerization under the action of a metathesis catalyst, a silicon-containing polymer is obtained after chemical hydrogenation, and then the composite antioxidant is obtained after hydrolysis and mixing with lignin. The main chain of the composite antioxidant is a saturated hydrocarbon chain, the compatibility with polyethylene is high, the silicon-containing polymer is hydrolyzed to generate active silanol, the active silanol is efficiently bonded with lignin, and the lignin provides natural polyphenol antioxidant function. The application realizes efficient antioxidant of the composite material, high compatibility and long-term durability, and provides a new idea for high-performance environment-friendly high polymer composite materials.

This invention discloses an anti-wrinkle and soothing composition and its preparation method, belonging to the field of cosmetic technology. The composition includes the following steps: mixing and stirring a moisturizer, antioxidant, emollient, deionized water, ginseng root extract, snow lotus (SAUSSUREA INVOLUCRATA) extract, dark green agave (AGAVE ATROVIRENS) extract, umbrella maple leaf extract, and lotus coronulatus flower extract until homogeneous, thus obtaining the anti-wrinkle and soothing composition. Utilizing the synergistic effects between the components, it possesses both anti-wrinkle and soothing effects, synergistically improving skin aging problems.

The invention discloses a compound microorganism freeze-drying protective agent, a preparation method of the compound microorganism freeze-drying protective agent and a use method of the compound microorganism freeze-drying protective agent. Comprising the following raw materials in parts by weight: 0.03 part of disodium ethylene diamine tetraacetate, 5 to 15 parts of trehalose, 2 to 5 parts of sorbitol, 0.5 to 2 parts of ascorbic acid, 0.05 to 0.2 part of N-acetyl-L-cysteine, 0.1 to 0.5 part of polylactic acid-glycolic acid copolymer, 0.01 to 0.05 part of alpha-tocopherol and 1 to 3 parts of bentonite. The PLGA, the alpha-tocopherol and the NAC construct a three-stage synergistic anti-oxidation system from outside to inside: the PLGA is externally blocked, so that rapid consumption of an antioxidant is avoided, and slow release is realized; the alpha-tocopherol realizes oxidative damage repair of cell membranes; nAC maintains the internal reduction environment of cells, reduces oxidative stress and can regenerate alpha-tocopherol at the same time, and reutilization of resources is achieved.

The application relates to the technical field of magnetic materials, in particular to a preparation method of high-performance heavy-rare-earth-free neodymium iron boron magnets; the preparation method comprises the following steps: rapidly quenching a main phase alloy into a flake, obtaining coarse powder after hydrogen breaking; immersing the coarse powder in an ethanol mixed solution containing lanthanum nitrate and cerium nitrate, drying the pretreated coarse powder after ultrasonic-magnetic stirring cooperative treatment; adding an antioxidant and a lubricant into the pretreated coarse powder, preparing fine powder with an average particle size of 2-3.5 microns through airflow milling; performing magnetic field orientation compression molding on the fine powder under nitrogen protection, improving the density through cold isostatic pressing; finally, performing vacuum sintering and step-by-step tempering treatment to obtain the high-performance heavy-rare-earth-free neodymium iron boron magnets; wherein the main phase alloy is composed of the following components with mass percentage: 28-31wt.% Pr25Nd75, 0.88-1.2wt.% B, 0-0.1wt.% Al, 0.05-0.3wt.% Ti, 0.05-0.4wt.% Cu, 0.5-1.4wt.% Co, 0.1-0.4wt.% Ga, and the balance is Fe; the prepared neodymium iron boron magnet has the dual characteristics of high coercivity and high remanence, and effectively guarantees the performance and quality.

The phenylenediamine-based antioxidant is used as a substitute for 6PPD, while improving scorch resistance and heat aging resistance. [Solution] The rubber composition according to the embodiment comprises a rubber component, a phenylenediamine-based antioxidant represented by the following formula (1), and a thiuram disulfide-based vulcanization accelerator. In formula (1), R 1 and R 2 Each of these independently represents a hydrocarbon group having 6 or more carbon atoms, however, R 1 and R 2 Except when it is a combination of a phenyl group and a 1,3-dimethylbutyl group. [Formula 1] JPEG2026103949000010.jpg42129

The embodiment of the application provides an insulating oil, a preparation method thereof and a power transformation equipment. The insulating oil comprises a composite vegetable ester base oil, a synthetic ester additive, a compounded antioxidant and a metal deactivator. The insulating oil has good electrical performance, oxidation stability and environmental protection performance, and can ensure safe and stable operation of the power transformation equipment.

The invention relates to a liquid detergent containing, based on the total weight thereof, a) 22 to 50 wt.% anionic surfactant; b) 0.1 to 8 wt.% gluconic acid salt; c) 0 to 2 wt.% antioxidant; d) 5 to 25 wt.% organic solvent; e) 0.1 to 15 wt.% water; f) less than 0.1 wt.% organic phosphonate, and g) 0.01 to 5 wt.% perfume composition.

The present application relates to the cosmetic technical field, specifically, it relates to a kind of lipid-polymer composition comprising retinol and its preparation method and application.The component includes retinol 1-15%, solvent oil 10-20%, antioxidant 0.1-1%, emulsifier 1-4.5%, lipid 1-2%, polyol 10-20%, polymer 0.05-0.5% by mass percentage, and the balance is water.The present application can significantly improve the stability of retinol and system by the compounding of specific retinol, solvent oil, antioxidant, emulsifier, lipid, polyol and polymer, solve the problem of easy oxidative degradation of retinol;By limiting the emulsifier to be polyglycerol emulsifier, combined with lipid and polymer hybridization wrapping, the skin irritation of retinol can be effectively reduced, and the defects of strong irritation of retinol and limited application population can be effectively solved.

The application relates to a weather-resistant color master batch for modified polypropylene cable protection pipes, which is composed of a carrier resin, a photo-thermal stable color powder, a filler and a grafting compatibility modifier; the photo-thermal stable color powder is composed of zinc dicyclopentadiene dimethylate, orange yellow, bright red, an antioxidant, an ultraviolet absorber and a dispersant; the dicyclopentadiene in the zinc dicyclopentadiene dimethylate has heat-reversible crosslinking properties, is disdimerized during heat processing, has good processing fluidity, is re-cyclized and addition-dimerized to be crosslinked after temperature reduction, so that the decomposition of the orange yellow and the bright red caused by cable heating is reduced; meanwhile, the antioxidant and the ultraviolet absorber have a compound synergistic effect, so that the weather resistance of the color master batch can be better improved; the modified polypropylene cable protection pipe prepared by using the color master batch has the advantages of color stability, reduced processing toxicity, good processing fluidity, low price and the like, and is more suitable for power cable protection pipe use.

The application discloses a kind of corrosion-resistant double-armored submarine cable and preparation method thereof, it is related to submarine cable technical field.The corrosion-resistant double-armored submarine cable includes outer sheath layer, water barrier layer, double-armored layer, insulating inner liner, filling layer, insulating layer, copper conductor in turn from surface to inside;The outer sheath layer is obtained by extruding coating on the surface of double-armored layer by corrosion-resistant submarine cable material;The corrosion-resistant submarine cable material includes the following raw material components: by mass parts, 75-90 parts of high-density polyethylene, 30-50 parts of ultra-high molecular weight polyethylene, 10-25 parts of modified microfiber, 8-15 parts of ethylene-vinyl acetate copolymer, 0.2-0.5 parts of antioxidant, 1-1.2 parts of lubricant.The application optimizes sheath layer material, solves the problems of existing double-armored submarine cable corrosion failure, short service life, unstable performance and other problems, meets the demand of long-term service reliability.

A composite encapsulated vitamin liposome, which is prepared from the following raw materials in parts by weight: 2-65 parts of a vitamin, 15-65 parts of a phospholipid, 0.2-3 parts of an antioxidant, 1-8 parts of a membrane stabilizer, 9-45 parts of a first-layer wall material, and 4-20 parts of a second-layer wall material. A preparation method comprises: preparing an aqueous solution of a water-soluble vitamin to obtain an aqueous phase; fully mixing and dissolving anhydrous ethanol, a phospholipid and a membrane stabilizer, and then adding a lipid-soluble vitamin and allowing same to completely dissolve to obtain an alcohol phase; separately preparing a first-layer wall material solution and a second-layer wall material solution; slowly injecting the alcohol phase into the aqueous phase, and stirring same sufficiently to form a primary liposome dispersion solution; performing vacuum concentration to obtain a concentrated solution, slowly adding same to the first-layer wall material solution, and stirring same sufficiently to form a dispersion solution; and performing high speed shearing and high pressure homogenization and mixing same with the second-layer wall material solution, and performing drying to obtain the final product. The liposome can be used in the production of tablet preparations, hard-shell capsules and solid beverages, and can achieve high stability and controlled release of vitamins.

A method for producing bio-oil from lignin, comprising the following steps: (a) extracting lignin into oligomers for 30 to 90 minutes, preferably 40 to 70 minutes, in the presence of at least one alcohol having 1 to 5 carbon atoms, preferably 1 to 2 carbon atoms, at the boiling point temperature of said alcohol, or, in the case of a mixture of alcohols, at the temperature of a higher boiling point alcohol, thereby obtaining a liquid phase comprising oligomers and at least one alcohol, and a solid phase comprising lignin substantially free of said oligomers; (b) operating under supercritical conditions in the presence of at least one alcohol having 1 to 5 carbon atoms, preferably 1 to 2 carbon atoms, at a temperature of 200°C to 300°C, preferably 220°C to 295°C, and at 40 bar to 170 bar, preferably 50 bar to 150 bar. Under bar pressure, the solid phase containing lignin substantially free of said oligomers obtained in step (a) is depolymerized for 5 to 150 minutes, preferably 10 to 130 minutes, to obtain: - (i) a gas phase; - (ii) a mixture comprising: an oil phase consisting of bio-oil, a liquid phase containing at least one alcohol, and a solid phase containing carbon residues (“char”), the oil phase consisting of bio-oil, and optionally unconverted lignin; (c) the oil phase consisting of bio-oil is recovered from the mixture (ii) obtained in step (b). The bio-oil obtained by the foregoing method can be advantageously used, for example, as an antioxidant or UV stabilizer, particularly as an antioxidant or UV stabilizer in biofuels, which can be used as is or blended with other fuels in automotive or aviation diesel engines. Furthermore, the bio-25 oil obtained by the foregoing method can be advantageously used as an antioxidant in, for example, vegetable oils and animal or plant fats, as bio-feedback materials to slow their rancidity during transport and storage.

The application discloses an intermediate processing liquid for an electroless nickel immersion gold (ENIG) production line and a chemical gold preparation method. The intermediate processing liquid is applied between the electroless nickel plating and immersion gold processes, and comprises (a) a pH buffer and a metal ion complexing agent: a total concentration of 50-150 g / L; (b) an adsorptive corrosion inhibitor: a concentration of 0.5-5.0 g / L; (c) a low-foam non-ionic surfactant: a concentration of 0.01-10 g / L; (d) an auxiliary antioxidant: a concentration of 0.5-30 g / L; (e) a dissolving agent: a concentration of 1-50 ml / L; (f) a pH regulator: an appropriate amount, which is added to maintain the pH value of the intermediate processing liquid at 4.0-6.5; and (g) deionized water: a balance, so that the concentrations of the above components reach the set target values; and the intermediate processing liquid has a design use temperature of 20-45 DEG C. The intermediate processing liquid removes residual nickel ions on the board surface and in micropores through strong complex cleaning, and blocks the pollution to the subsequent gold tank; meanwhile, the preferential adsorption of the corrosion inhibitor molecules at the nickel layer grain boundaries forms a controllable molecular-level protective film, effectively adjusts the immersion gold replacement reaction kinetics, and prevents the occurrence of intergranular corrosion (black plate).

The kombucha drink (50) comprises a fermented liquid obtained by using sweet tea (30) and natural red berry juice (26) as a fermentation substrate, the natural red berry juice (26) not being pasteurised or dehydrated.

This invention provides an alcohol amine polyether composition, its preparation method, and its applications. By pre-adding specific antioxidants and stabilizers, combined with a special post-treatment purification process, this invention effectively improves the anti-aging properties and color stability of the alcohol amine polyether. The resulting alcohol amine polyether composition has an initial color number <7 (Gardner color), and exhibits excellent anti-aging properties. Color testing results after one week in a 50-55℃ oven and three months at room temperature show a color number of approximately 5-6 (Gardner color), with almost no darkening. It can be widely used as a main component in cleaning agents in the field of electronic chemical cleaning.

The invention relates to an additive composition comprising primary anti-oxidants and a secondary anti-oxidant, wherein the primary anti-oxidants are a phenyl phosphite and 3,3′-thiodipropionic acid dioctadecylester, and wherein the secondary anti-oxidant is epoxidized soybean oil. The invention additionally relates a bituminous composition comprising primary anti-oxidants and a secondary anti-oxidant, wherein the primary anti-oxidants are a phenyl phosphite and 3,3′-thiodipropionic acid dioctadecylester; and wherein the secondary anti-oxidant is epoxidized soybean oil. The invention also relates to an asphalt composition comprising the bituminous composition with resistance to short-term and long-term chemical ageing. The invention further relates to the use of an additive composition to reduce short-term and long-term chemical ageing of a bituminous composition.

The application relates to the technical field of high polymer materials, and particularly discloses a high-toughness rubber glove material and a preparation method thereof, the high-toughness rubber glove material comprises the following raw materials: a base material, nano silicon dioxide, a multifunctional crosslinking agent, a peroxide initiator, a lubricant and an antioxidant; the base material is composed of alpha-olefin ethylene copolymer, ethylene propylene diene rubber and hydrogenated styrene-butadiene block copolymer in a mass ratio of 5-7:2-3:1-2. The hydrogenated styrene-butadiene block copolymer is introduced as a physical compatibilizer, macroscopic phase separation in a dynamic crosslinking process is effectively inhibited, and crystal point defects are eliminated; the multifunctional crosslinking agent is used for micro-crosslinking, so that the material can dissipate strain energy through molecular chain stretching when subjected to external force, the tensile strength, the elongation at break and the tear strength of the glove are significantly improved under the premise of keeping soft, and excellent barrier blocking performance is endowed.

This invention discloses a method for preparing sheet-like nano-sized cobalt hydroxide. The method includes the following steps: using cobalt nitrate as the cobalt source and sodium hydroxide solution as the precipitant, a co-precipitation reaction is carried out. The cobalt nitrate solution and sodium hydroxide solution are added together to a reaction vessel. By controlling the synthesis pH and temperature, the synthesized cobalt hydroxide slurry is washed with hot pure water, dried, and crushed using an air jet mill to obtain sheet-like nano-sized pink cobalt hydroxide with low sodium content. Specifically, the key to preparing sheet-like nano-sized cobalt hydroxide is to prevent oxidation and particle agglomeration during the synthesis process. This invention uses a low-temperature (40-60℃), low-pH (8.0-9.0) cobalt hydroxide synthesis process with a small amount of antioxidant added to prepare sheet-like micron-sized cobalt hydroxide that is not easily oxidized or agglomerated. In addition, at the low pH, the sodium content is low, making the subsequent filtration and washing steps easier to operate.

The application discloses a hot air pretreatment method for extracting oat oil and belongs to the technical field of oil extraction. The application solves the technical problems of low extraction efficiency, easy oxidation of oil and large solvent consumption existing in the prior art. The method comprises the following steps: a. oat bran is dried by hot air at 130-150 DEG C for 15-20 min; b. the oat bran is placed in a negative pressure environment, and ethanol vapor flash treatment is performed for 5-15 min; c. the oat bran is mixed with a mixed solvent of petroleum ether and ethanol, immobilized lipase and natural antioxidant are added, and extraction is performed for 8-12 h, and then filtration separation is performed; d. the first residue is mixed with the mixed solvent, extraction is performed for 4-6 h, and then filtration separation is performed; e. the first supernatant and the second supernatant are combined, the solvent is recovered by reduced pressure distillation, and oat crude oil is obtained; and f. the immobilized lipase is recovered. The method is mainly used for efficiently extracting high-quality oat oil from oat bran.

Disclosed are compositions for the oral or nasal cavity. The compositions comprise a biologically active agent, a matrix forming agent comprising beta-glucan, and a bulking agent. The compositions can also comprise additional excipients, such as antioxidants, preservatives, taste or flavor enhancers, pH adjusting agents, plasticizers, and sweeteners. Also disclosed are methods of manufacturing the compositions.

The application discloses a silane-modified antioxidant with anti-precipitation and anti-migration, a preparation method and application thereof, and belongs to the technical field of polyethylene pipe materials. The antioxidant is obtained by optimizing and modifying a composite antioxidant, and three different types of antioxidants, namely, hindered phenol, aromatic amine and tocopherol, are chemically bonded to a molecular skeleton to form a composite and multi-mechanism antioxidant active end, so that the antioxidant has the advantages of excellent migration resistance and precipitation resistance, and the durability of the antioxidant is ensured. In addition, the modified antioxidant is applied to the preparation of a silane cross-linked polyethylene pipe material, has better compatibility, and is firmly fixed in a polymer network through covalent bond anchoring, so that the antioxidant molecule provides stable, durable and reliable antioxidant protection for the pipe material, the service life of the pipe material is greatly prolonged, and the total cost of replacement and maintenance is reduced.

This utility model discloses a drying device for the production of antioxidants, relating to the field of drying technology. The key technical features include a housing with multiple air pipes connected to its sidewalls. Each air pipe has a nozzle installed at one end inside the housing. A vertical pipe is installed inside the housing, with multiple horizontal arms fixedly connected to it. The ends of the horizontal arms furthest from the vertical pipe are fixedly connected to the housing. A vertical shaft is installed inside the vertical pipe, with helical blades fixedly connected to it. The helical blades rub against the inner sidewall of the vertical pipe. The upper end of the vertical shaft penetrates the top wall of the housing and is connected to the output shaft of a motor via a coupling. The motor is mounted on the housing. The helical blades push the antioxidant at the bottom of the housing upwards within the vertical pipe, eventually discharging it from the top of the vertical pipe and falling back to the bottom of the housing. The multiple nozzles dry the antioxidant during its descent, effectively shortening the drying time.

The present invention relates to the technical field of the preparation of materials and aims to solve the problems of interface separation and relatively weak oxidation resistance under complex working conditions caused by insufficient interfacial bonding force of existing carbon / carbon composite materials. To this end, the present invention provides a carbon / carbon composite material and a preparation method therefor. The carbon / carbon composite material comprises, in mass percentages, 40-55% of polyacrylonitrile-based carbon fibers, 10-25% of pitch-based carbon fibers, 8-20% of nano silicon dioxide-grafted carbon fibers, 8-20% of bio-pitch, 8-15% of a nanographene-modified phenolic resin, 3-6% of silicon carbide whiskers, 2-4% of zirconium boride nanoparticles, 2-4% of graphitized carbon fibers, and 1-3% of a natural plant extract antioxidant. The carbon / carbon composite material of the present invention can provide stable interfacial bonding force and significant oxidation resistance, thereby ensuring the structural integrity and mechanical property stability of the material when subjected to a variety of complex stresses such as tension, compression, bending, and shear, and broadening the application range of the material in the field of high-temperature oxidation resistance.

This invention provides an oil-purifying cleansing mud and its preparation method. The cleansing mud, by weight, comprises 1-5 parts of a viscosity modifier, 0.01-0.1 parts of a chelating agent, 10-20 parts of a moisturizer, 15-25 parts of a surfactant, 0.1-1 parts of a thickener, 0.1-5 parts of a cleanser, 0.1-2 parts of an antioxidant, 0.1-1 parts of a fragrance, and 50-75 parts of water. The surfactant is a combination of sodium cocoyl glycinate, lauryl hydroxysulfonate betaine, cocoyl glutamic acid, decyl glucoside, potassium cocoyl glycinate, and cetearyl alcohol polyether-25. This oil-purifying cleansing mud, through the use of surfactants, cleansers, and moisturizers, gently cleanses pores, absorbs oil and dirt, and simultaneously soothes the skin, preventing dryness and tightness. The synergistic combination of these components achieves a balance between cleansing, oil removal, and gentleness, precisely regulating the skin's balance and thus enhancing the consumer experience.

The application provides an adhesive and a preparation method and application thereof, and comprises the following raw materials in parts by weight: the adhesive comprises AB components; the A component: polyether polyol 20-30 parts, polyether amine 25-30 parts, calcium carbonate 10-20 parts, talcum powder 10-20 parts, catalyst 0.4-0.6 parts, solvent 10-15 parts; the B component: polyisocyanate 10-30 parts, polar plasticizer 2-8 parts, white water preventing agent 0.2-0.5 parts, antioxidant 0.2-0.5 parts. In the application, the polyether polyol and the polyether amine of the A component are soft segments, which can make the adhesive more flexible and elastic; the polyisocyanate of the B component is a hard segment, which can enhance the strength and heat resistance of the adhesive. The application mixes the A component and the B component according to the mass ratio, so that the mixing ratio of the soft segment and the hard segment is appropriate, and the adhesive performance of the adhesive is optimal; the polar plasticizer can reduce the viscosity of the adhesive, has a good promoting effect on micro-phase separation, and increases the surface polarity of the base material.

Sublingual or buccal dosage forms comprise at least one antioxidant compound, such as N-acetyl cysteine (NAC), or a pharmaceutically acceptable salt thereof. The sublingual or buccal dosage forms are administered for treating central nervous system (CNS) disorders, such as traumatic brain injury or stroke.

This invention relates to the field of cosmetic products, specifically disclosing a long-lasting mosquito-repellent lacquerwood wax composite balm. This composite balm, by weight fraction, comprises 20-25 parts by weight of lacquerwood peel wax, 12-18 parts by weight of lemon eucalyptus oil, 3-8 parts by weight of catnip oil, 35-45 parts by weight of a temperature-controlled phase change regulating oil, 5-10 parts by weight of a hydrophobic plant-derived film-forming agent, 2-5 parts by weight of isosorbide dicaprylate, and 0.5-1 part by weight of a fat-soluble antioxidant. The long-lasting mosquito-repellent lacquerwood wax composite balm of this invention achieves a long-lasting and stable release of mosquito-repellent active ingredients, while also possessing suitable temperature-controlled phase change properties, a pleasant skin feel, synergistic mosquito-repellent effects, excellent hydrophobic and sweat-resistant capabilities, and stable storage of natural components.

The invention relates to a food processing technology, and discloses a stress relaxation microchannel guided low-fat high-oxidation-stability nut preparation method. The method comprises the following steps: adjusting the content of nut meat in an aqueous solution containing an antioxidant to 8-12% (dry basis), and then carrying out phase change induced stress treatment to form a micro-fracture network communicated with the outer surface in the interior; then increasing the pressure to 3 to 10 MPa at the speed of 1.0 to 2.5 MPa / min, and maintaining the pressure, wherein the hot / trap is 1.5 to 1.8; and rapidly relieving pressure and discharging residual oil at (2.5-3.5) v1, and rapidly shaping by adopting high-energy drying for 2-10 minutes by adopting radio frequency / infrared / microwave vacuum and the like. According to the method, the degreasing efficiency and the size stabilization rate are improved under the low pressure intensity, surface residual oil is reduced, flavoring is promoted, and the storage oxidation stability is improved.