159 results about "Butylated hydroxytoluene" patented technology

The invention discloses a fluralamide moxidectin drop and a preparation method thereof, and relates to the technical field of veterinary drugs. The drop is prepared from the following components in parts by weight: 26 to 26.5 parts of fluralan, 1.32 parts of moxidectin, 0.10 part of butylated hydroxytoluene, 29.5 to 30.5 parts of dimethylacetamide, 19.5 to 20 parts of tetrahydrofuran polyethylene glycol ether, 13 to 13.5 parts of diethyl toluamide, 8.5 to 9.3 parts of acetone and 1.0 to 1.5 parts of ethanol. The invention has the effects of improving the stability, permeability and lasting effect of the medicine.

The invention discloses a power-on viscosity-reducing adhesive composition, a viscosity-reducing adhesive tape and a preparation method of the viscosity-reducing adhesive tape, and relates to the technical field of adhesive materials. The preparation method comprises the following steps: adding polyurethane acrylate and polybutylene adipate into a planetary stirring kettle, stirring, sequentially adding a PEDOT / PSS solution, a nano core-shell material, a dynamic cross-linking agent, hydrogenated rosin tackifying resin, TPU particles and butylated hydroxytoluene, stirring to obtain mixed glue, and carrying out vacuum defoaming to obtain the electrified viscosity-reducing glue composition. Coating a release film with the electrified viscosity-reducing adhesive composition, carrying out UV curing, and attaching the release film on the other side to obtain the electrified viscosity-reducing adhesive tape. The prepared electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape have the advantages of being excellent in mechanical property, sensitive in response, remarkable in stripping force difference before and after electrification, stable at high temperature, stable in circulation, resistant to pollution and the like, nondestructive disassembly and reutilization of devices are achieved by regulating and controlling the adhesive force through an electric field, and the electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape can be applied to an electric response assembly scene.

The invention relates to the technical field of medicine formulas, in particular to a fluralamide moxidectin composite drop and a preparation process thereof. The invention relates to a fluralan-moxidectin emulsion which is prepared from the following raw materials in percentage by mass: 26 to 30 percent of fluralan, 1.1 to 1.7 percent of moxidectin, 32 to 36 percent of solvent, 0.1 to 0.3 percent of butylated hydroxytoluene, 10 to 16 percent of polymer carrier and the balance of tetrahydrofuran polyethylene glycol ether. The coexisting drug is stabilized through the core-shell structure polymer carrier, phase separation is prevented, a neutral environment is maintained, long-acting stability is ensured, the transdermal absorption rate is optimized, skin irritation is reduced, and the synergistic drug effect is improved. Meanwhile, the slow release period of the medicine is prolonged, the metabolic interference and accumulated toxicity are reduced, and the dissolution efficiency and the skin mildness are both considered.

The invention provides a composite additive based on 2, 6-butylated hydroxytoluene, phosphate fire-resistant oil and application, the composite additive is a mixture of 2, 6-butylated hydroxytoluene and Revonox 501, the addition amount of 2, 6-butylated hydroxytoluene is 0.01%-0.10%, the addition amount of Revonox 501 is 0.0020%-0.0050%, the addition amount of 2, 6-butylated hydroxytoluene is 0.01%-0.10%, the addition amount of 2, 6-butylated hydroxytoluene is 0.0020%-0.0050%, and the addition amount of 2, 6-butylated hydroxytoluene is 0.01%-0.10%. After the phosphate fire-resistant oil is added with the composite additive, the comprehensive performance of the phosphate fire-resistant oil in the operation process can be improved, and the defects that after new phosphate fire-resistant oil is loaded into a system, the action flexibility of a steam turbine assembly is reduced and a servo valve of a speed regulating system is corroded and jammed due to the phenomena that the acid value is increased, the resistivity is reduced, oil sludge is generated and the like in the use process are overcome; and the operation safety of a turbine set of a power plant is influenced.

The invention relates to an additive capable of improving oxidation resistance of an ultrathin copper foil and a copper foil produced by the additive. The additive comprises ytterbium ions, butylated hydroxytoluene, polyethylene glycol and a brightener. The additive is simple in formula, the number of contained components is small, the process is easy to control, the additive is added into electrolyte to electrolyze the copper foil, and it can be achieved that the 6-micron ultrathin copper foil is free of oxidation discoloration after being placed for 120 h at the temperature of 85 DEG C and the relative humidity of 85% and free of oxidation discoloration after being baked for 60 min at the temperature of 230 DEG C.

The invention belongs to the technical field of insulating oil, and provides a slow-release antioxidant as well as a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing octadecyl trimethyl ammonium bromide, 2, 6-butylated hydroxytoluene, tetraethoxysilane, water and ammonia water, and reacting to obtain the antioxidant; and (2) in a protective atmosphere, mixing the antioxidant, ethanol, water and gamma-mercaptopropyltriethoxysilane, and carrying out a reaction so as to obtain the slow-release antioxidant. The slow-release antioxidant suitable for the synthetic ester insulating oil is prepared through a physical coating means and oleophylic modification, has excellent solubility, can effectively inhibit the increase of the acid value of the synthetic ester insulating oil, delays the oxidation process of the synthetic ester insulating oil, and remarkably prolongs the service life of the insulating oil. Meanwhile, through a slow release mechanism, the antioxidant can prolong the antioxidant effect of the antioxidant, improve the antioxidant stability in long-time operation and meet the higher antioxidant requirement of high-performance equipment such as a transformer for the insulating oil.

The invention belongs to the technical field of veterinary drug preparations, and particularly relates to a compound external ointment for treating parasites of dogs and cats and skin tinea and a preparation method, the compound external ointment comprises the following components by mass percent: 2%-12% of selamectin, 3%-20% of imidacloprid, 0.5%-2% of terbinafine hydrochloride, 2%-12% of dipropylene glycol monomethyl ether, 10%-50% of isopropanol, 9%-45% of polyethylene glycol 400 and the balance of water. The adhesive is prepared from, by weight, 9%-45% of polyethylene glycol 3350, 5%-15% of caprylic / capric polyethylene glycol glyceride, 1%-8% of oleyl alcohol, 0.5%-5% of dimeticone, 0.01%-0.1% of butylated hydroxytoluene and 1%-5% of cassava starch polymethylsesquioxane. The preparation method comprises the following steps: uniformly stirring the selamectin, the imidacloprid, the terbinafine hydrochloride and the mixed solvent, then mixing with the matrix (the polyethylene glycol 400 and the polyethylene glycol 3350 are heated and uniformly mixed in advance), the emulsifier and other components, and homogenizing. The compound selamectin ointment prepared by the invention can realize accurate administration at the edge of the auricle of an animal, and not only can ensure that the medicine is fully absorbed, but also can improve the compliance of animal administration; the composition not only can expel parasites in a broad spectrum, but also has broad-spectrum antifungal activity, and can prevent and treat a plurality of skin diseases of pets.

The invention provides a fully synthetic cutting fluid special for a copper part and a preparation process thereof. The fully synthetic cutting fluid special for the copper part comprises the following raw materials in parts by weight: 0.5-2.0 parts of a defoaming agent, 1.0-3.0 parts of an antioxidant, 0.5-2.0 parts of a corrosion inhibitor, 2.0-5.0 parts of a surfactant, 0.5-1.5 parts of a metal ion complexing agent and 80.0-100.0 parts of deionized water. Wherein the antioxidant is prepared from carnosol, daidzin and butylated hydroxytoluene. The carnosol and the daidzin can be used for reducing the oxidation reaction by capturing free radicals, and the butylated hydroxytoluene can be used for further enhancing the anti-oxidation effect by interrupting the oxidation chain reaction. And through the combined action and mutual complementation of different anti-oxidation mechanisms, a synergistic effect is formed, and oxidation of the copper part in the machining process is effectively prevented. Wherein the metal ion complexing agent is composed of isothiocyanate, polyaspartic acid and amino trimethylene phosphonic acid, multiple protection mechanisms are formed, and the corrosion resistance of the copper part is remarkably improved. And the existence of the metal ion complexing agent is also beneficial to improving the stability of the cutting fluid.

The invention provides a PEF composite board and a preparation method, and relates to the technical field of insulation boards, the composite PEF board is formed by bonding a plurality of layers of board bodies, and comprises a base layer, the base layer is prepared from the following components in parts by weight: 58 to 60 parts of HDPE (High-Density Polyethylene), 4 to 6 parts of nano montmorillonite, 1 to 2 parts of benzoyl peroxide, 2 to 5 parts of BHT (Butylated Hydroxytoluene) heat stabilizer and antioxidant, 2 to 5 parts of maleic anhydride grafted polyethylene, 0.2 to 1 part of magnesium stearate and 0.3 to 0.8 part of epoxidized soybean oil; comprising a fireproof layer which is composed of the following components in parts by weight: 45-55 parts of HDPE and 5-15 parts of a phosphate ester environment-friendly flame retardant; comprising a thermal insulation layer and is prepared from the following components in parts by weight: 45-55 parts of HDPE, 5-10 parts of lignin fibers and 5-10 parts of a bio-based foaming agent formed by mixing sodium bicarbonate and citric acid. The invention has the beneficial effects that the mechanical strength, flame retardant property and thermal insulation effect of the PEF plate are obviously improved, the weather resistance and environmental protection property are enhanced, the optimal balance of high performance and cost effectiveness is realized, and the PEF plate is suitable for various building and industrial application environments.

The invention discloses a vitamin D3 clathrate compound and a preparation method thereof, and further discloses a calcium carbonate D3 tablet containing the vitamin D3 clathrate compound and a preparation method of the calcium carbonate D3 tablet. The vitamin D3 inclusion compound disclosed by the invention comprises the following components in percentage by mass: 0.05-0.75% of vitamin D3; 80.00 to 99.5 percent of hydroxypropyl-beta-cyclodextrin, and the balance of water; 1.00% to 10.00% of an antioxidant; 0.00 to 5.00% of an anti-sticking agent; wherein the antioxidant is butylated hydroxytoluene (BHT), vitamin E and sodium ascorbate. The invention also provides a preparation method of the vitamin D3 clathrate compound. The preparation method comprises the following steps: dissolving the vitamin D3 and the antioxidant in ethanol; the preparation method comprises the following steps: dissolving hydroxypropyl-beta-cyclodextrin in purified water, and then adding an anti-sticking agent; mixing the two solutions; and drying by using a spray dryer to prepare the vitamin D3 inclusion compound. The vitamin D3 inclusion compound prepared by the invention is high in inclusion rate and yield and can be stably stored for a long time, and a preparation (such as a calcium carbonate D3 tablet) prepared from the inclusion compound meets medicinal requirements, and is good in long-term stability, high in uniformity, simple to prepare and relatively low in cost.

A multistage melt crystallization purification method for BHT (butylated hydroxytoluene) adopts a two-stage melt crystallization process and comprises the following steps: firstly, melting a crude product BHT, and then separating mother liquor M1 through first-stage crystallization (cooling to 60-65 DEG C at a speed of 0.5-2 DEG C / h); and then, carrying out secondary melting on the primary crystal, carrying out secondary crystallization (cooling to 65-68 DEG C at the speed of 0.1-0.5 DEG C / h) and separating mother liquor M2, carrying out gradient heating (0.1-0.5 DEG C / 20min) to 68-70 DEG C, sweating and discharging sweat M3, and finally, melting to obtain BHT liquid with the purity of more than or equal to 99.9%. And recycling the mother liquor M1 to a synthesis rectification process, and respectively returning the mother liquor M2 and the mother liquor M3 to the primary crystallizer and the secondary crystallizer for cyclic utilization. According to the method, a solvent is not needed, the yield is remarkably improved through mother liquor recycling, high-temperature decomposition is avoided, the product purity is high, the stability is good, the sliced finished product is not prone to discoloring, the technological process is energy-saving and efficient, and the method is suitable for industrial production of medicine and food-grade BHT.

The invention aims to provide bio-based modified CNC-Pickering emulsified asphalt and a preparation method thereof, and belongs to the technical field of modified emulsified asphalt. Comprising the following components in parts by mass: 45 to 55 parts of matrix asphalt, 45 to 55 parts of deionized water, 1 to 5 parts of cellulose nanocrystal, 0.5 to 1 part of gamma-aminopropyltriethoxysilane, 0.5 to 1.5 parts of sophorolipid, 0.1 to 0.3 part of sodium citrate, 0.1 to 0.3 part of sodium tripolyphosphate, 0.5 to 2 parts of polyvinyl alcohol, 0.1 to 0.3 part of xanthan gum and 0.05 to 0.1 part of butylated hydroxytoluene. The cellulose nanocrystal and Pickering emulsification technology are combined, so that the stability of the emulsified asphalt can be improved, the ageing resistance, high temperature resistance and low temperature resistance of the emulsified asphalt can be improved, and the high-performance requirement of road engineering on the emulsified asphalt can be met.

The invention relates to the technical field of feed, and discloses a feed additive for laying hen breeding and a preparation method thereof.The feed additive for laying hen breeding is obtained by drying vitamins, nicotinamide, an antioxidant butylated hydroxytoluene, calcium pantothenate, modified chitosan and liquorice, putting the materials into a stirrer, conducting smashing and then conducting mixing. The feed additive obtained by compounding the raw materials can promote the growth of laying hens and promote the organ development of the laying hens; the oxidation resistance and the immunocompetence of the laying hens are improved; amino acid and chitosan groups contained in the modified chitosan also play a better role in helping the growth of the laying hens. The feed additive can shorten the laying day age of laying hens, improve the laying rate, improve the quality of eggs, reduce the yield of inferior eggs, improve the body quality of the laying hens and the like, is a non-toxic, drug-resistant and residue-free laying hen feed additive, and can be widely applied to laying hen feeding feeds.

The invention belongs to the technical field of dispersing agents, and particularly relates to a dispersing agent based on caprolactone and polyethyleneimine and a preparation method of the dispersing agent. The preparation method comprises the following steps: (1) adding xylene into a dry reaction kettle, adding a caprolactone monomer and polyhydroxystearic acid, and uniformly stirring; (2) slowly adding an organic tin catalyst into the reaction kettle, adding an antioxidant BHT (butylated hydroxytoluene), heating the reaction system to 120-140 DEG C, and starting stirring to obtain a modified polycaprolactone system; and (3) adding polyethyleneimine into the modified polycaprolactone system, heating to 160-180 DEG C, and continuously reacting for 1-2 hours to obtain the dispersant based on caprolactone and polyethyleneimine. The dispersing agent disclosed by the invention can show a good dispersing effect in a water-based system and an oil-based system, has good system compatibility, and is suitable for various complex application environments, so that the application range of the dispersing agent is widened.

The invention relates to the technical field of disinfectant preparation, in particular to a composite phenol disinfectant and a preparation method thereof.The preparation method comprises the following steps that S1, a solution A is prepared; s2, dissolving butylated hydroxytoluene and sodium thiosulfate in an organic solvent to obtain a solution B; s3, mixing crude phenol, organic acid, cyclohexane and a surfactant with water, and uniformly stirring to obtain a solution C; s4, mixing the solution A, the solution B and the solution C, and adding carboxymethyl tallow-based poly (propylamine) sodium and a preservative to obtain a compound phenol disinfectant; and S5, adjusting the pH value of the mixed composite phenol disinfectant to finally obtain a finished product of the composite phenol disinfectant. By optimizing the formula and innovating the preparation process, the stability and durability of the disinfection effect are remarkably improved, the problems of effect fluctuation and poor stability of a disinfectant in the prior art are solved, and the requirements of the livestock and poultry breeding industry for an efficient and stable disinfectant are met.

The invention discloses an acid-resistant and temperature-resistant organic corrosion inhibitor and a preparation method and application thereof in the field of metal corrosion inhibition, and the acid-resistant and temperature-resistant organic corrosion inhibitor comprises the following raw materials: phytic acid, 2, 5-dimercapto-1, 3, 4-thiadiazole, propargyl alcohol, 5-carboxyl benzotriazole, hexadecyl trimethyl ammonium bromide, butylated hydroxytoluene, alkaloid and ethylene glycol. Wherein the alkaloid is selected from rhynchophylline, and the rhynchophylline is subjected to heterocyclic ring modification treatment, so that a pyridine group is introduced to an indole ring of the rhynchophylline. The phytic acid is selected as a main corrosion inhibition component and forms a protective film by chelating metal ions, meanwhile, the 2, 5-dimercapto-1, 3, 4-thiadiazole, the propargyl alcohol, the 5-carboxybenzotriazole and the alkaloid are used as auxiliary corrosion inhibitors, multi-mechanism synergistic promotion is achieved, the corrosion inhibition effect is remarkably enhanced, meanwhile, the dispersity is improved through hexadecyl trimethyl ammonium bromide, and the corrosion inhibition effect is improved. The dibutyl hydroxytoluene is used for improving the oxidation resistance, so that the corrosion inhibition effect of the whole corrosion inhibitor in high temperature and strong acid is very prominent.

The invention relates to the technical field of pipelines, in particular to a plastic pipeline containing plant fibers and a preparation method. The material is prepared from the following raw materials: PVC resin, modified plant fiber, zinc stearate, calcium stearate, polyethylene wax, 2, 6-butylated hydroxytoluene, acrylic acid and a chlorinated polyethylene-epoxidized soybean oil blend. The PVC resin provides basic strength and stability for the pipeline. The nano silicon dioxide on the surface of the modified plant fiber forms a physical barrier, the compatibility with PVC is enhanced through maleic anhydride grafting, the interface defects are reduced, the fiber dispersity is improved, and the mechanical performance is enhanced. The chlorinated polyethylene-epoxidized soybean oil blend forms a two-phase structure of a continuous phase and a dispersed phase, the diffusion path of VOCs is prolonged, a compact barrier system is constructed, in addition, the chlorinated polyethylene enhances the structural stability, and the epoxidized soybean oil optimizes interface bonding.

The invention provides a preparation method of a non-bulking waterproof moisture-permeable TPU film, and belongs to the technical field of TPU film preparation, and the preparation method of the non-bulking waterproof moisture-permeable TPU film comprises the following steps: stirring raw materials by a high-speed mixer for mechanical mixing; carrying out chemical reaction on the raw material, a divinylbenzene-ethyl acrylate-acrylamide copolymer and butylated hydroxytoluene, and adding tetrahydrofuran to adjust the viscosity of a reaction system, so as to obtain a TPU film material; heating, pressurizing and extruding the mixture through a screw extruder to form a film, plasticizing TPU particles into a semi-finished product, and filtering impurities and re-plasticizing on a filter of calendering equipment; carrying out annealing treatment, cooling in cold water, and pulling out the cooled TPU stretching film from a demolding opening of the demolding machine; the problems that an existing TPU film is poor in preparation size stability and prone to deformation can be solved.

The invention belongs to the field of renewable resource environment-friendly materials, and particularly relates to a method for preparing a high-performance sound insulation material by using solid waste plastics, a synthesis method of the sound insulation material, and an action principle and application of a modified material. According to the present invention, the formula is synergistic, the sound insulation, the mechanical property and the processing property are balanced, the tensile strength is more than 25 MPa, the sound insulation is excellent in the multi-frequency band, the processing is smooth, and the yield is high, which is far better than the specific components of the brand A product of the traditional recycled plastic sound insulation material: the recycled polyethylene (PE) and the polypropylene (PP) are mainly adopted, and the ratio of the recycled polyethylene (PE) to the polypropylene (PP) is about 3: 2. About 10% calcium carbonate is added as a filler to increase the hardness and weight of the material. Meanwhile, a small amount of antioxidant (about 0.5%), such as butylated hydroxytoluene (BHT), is contained and is used for delaying the aging speed of the material.

The application provides a water-permeable asphalt composition and a preparation method thereof, and the composition comprises the following components and mass fractions: 22-28 parts of base asphalt, 65-75 parts of modified composite aggregate, 3-4 parts of interface reinforcing agent, 1-2 parts of nano anti-aging agent, and 0.3-0.5 parts of antioxidant dibutyl hydroxytoluene, wherein the modified composite aggregate is compounded by basalt coarse aggregate, ceramsite fine aggregate and recycled glass microbeads at a mass ratio of 5-7:3-5:1. Through the synergistic effect of the multistage aggregate compounding system, the bio-based interface reinforcing technology and the nano drug-loaded anti-aging process, the mechanical strength and durability are significantly improved while the high water permeability is maintained, and the low-temperature modification and solid waste recycling technology are used to realize the environment-friendly and low-consumption production.

Dibutylhydroxytoluene, which is blended into ophthalmic solutions as an antioxidant, decreases in content in the ophthalmic solution due to its volatility, adsorption, decomposition, etc. By blending dibutylhydroxytoluene with one or more thickeners selected from the group consisting of xanthan gum, gelatin, and carrageenan, an ophthalmic solution is provided in which the decrease in the dibutylhydroxytoluene content is suppressed.

This invention relates to the field of organic synthesis technology, specifically to a highly efficient and stable Grignard preparation and its green preparation method. By weight, it comprises 8-18 parts of a magnesium source, 40-92 parts of a halogenated hydrocarbon, 150-200 parts of a green solvent, 15-20 parts of ethylene glycol dimethyl ether, and 2.3-3.2 parts of a synergistic stabilizer. The green solvent is 2-methyltetrahydrofuran, or a composite solvent with a weight ratio of 2-methyltetrahydrofuran:methyl tert-butyl ether of 150-160:40-50. The synergistic stabilizer is composed of 1.5-2.0 parts of N,N,N',N'-tetramethylethylenediamine and 0.8-1.2 parts of butylated hydroxytoluene, or composed of 1.5-2.0 parts of N,N,N',N'-tetramethylethylenediamine and 1.0 part of phenothiazine. This invention uses a green solvent system to replace traditional toxic and harmful solvents, and combines it with a solvent recovery process to achieve solvent recycling, which greatly reduces waste emissions and makes the production process safer and more environmentally friendly, in line with the development direction of green chemical industry.

The invention belongs to the technical field of transdermal patches, and relates to a transdermal patch for improving the bioavailability of estradiol and a preparation method of the transdermal patch. The transdermal patch is prepared from the following components in percentage by weight: 5 to 21 percent of estradiol, 8 to 15 percent of polymer matrix, 0.5 to 1.5 percent of butylated hydroxytoluene, 10 to 15 percent of hydrogenated rosin glyceride, 2 to 5 percent of penetration enhancer, 3 to 8 percent of plasticizer and 25 to 35 percent of solvent. According to the transdermal patch disclosed by the invention, continuous and stable release of a medicine is realized, the transdermal absorption rate of estradiol is improved, so that the bioavailability is improved, the treatment effect is further improved, and meanwhile, the transdermal patch disclosed by the invention can also avoid a first-pass effect of the liver and reduce side effects; the transdermal drug delivery system is convenient to use, and the compliance of a patient is improved.

The invention relates to the technical field of lithium ion batteries, and discloses positive electrode slurry, a lithium ion battery and an electric device. Wherein the positive electrode slurry comprises a positive electrode active material, a positive electrode conductive agent and a positive electrode binder, the positive electrode binder comprises a polyvinylidene fluoride-hexafluoropropylene copolymer and an in-situ free radical inhibitor, the polyvinylidene fluoride-hexafluoropropylene copolymer is prepared from 1, 1-difluoroethylene and hexafluoropropylene through a high-pressure emulsion polymerization method, and the in-situ free radical inhibitor is prepared from 1, 1-difluoropropylene and hexafluoropropylene through a high-pressure emulsion polymerization method. The in-situ free radical inhibitor is prepared from one or more of 2, 2, 6, 6-tetramethylpiperidine oxygen free radicals, butylated hydroxytoluene and tert-butylphenol. According to the invention, a water-based positive electrode binder system with anti-gelling capability is constructed, and a dual mechanism that PVDF-HFP and TEMPO synergistically regulate and control polymer chain segment crystallization behavior and free radical crosslinking reaction is realized. Therefore, the rebound of viscosity can be remarkably reduced, and the rate capability and cycle life of the battery are improved.

The present disclosure includes chewing gum base compositions and related methods of use and preparation thereof. For example, the present disclosure includes a chewing gum base composition comprising from about 25% to about 50% by weight of a natural rubber composition, from about 20% to about 35% by weight of a resin, from about 15% to about 25% by weight of a filler, from about 15% to about 20% by weight of a softener, from about 15% to about 20% by weight of a plasticizer, and from about 2% to about 10% by weight of an emulsifier. The natural rubber composition may include at least 99% by weight of edible deproteinized natural rubber, and the edible stabilizer includes an antioxidant selected from the group consisting of butylated hydroxytoluene (BHT), tocopherol, or a combination thereof.

Proposed is an anti-obesity composition containing a hemp seed extract as an active ingredient. Specifically, food and pharmaceutical compositions for preventing or reducing obesity, each of which contains a hemp seed extract as an active ingredient, are proposed. Additionally, proposed is a method of preparing a hemp seed unsaponifiable extract having an anti-obesity activity. The method includes (1) adding a hemp seed, pyrogallol, and potassium hydroxide (KOH) to a reaction vessel and filling the reaction vessel with nitrogen, (2) causing a reaction in a water bath at a temperature in a range of 70° C. to 80° C. for 40 to 60 minutes and then cooling the resulting product, and (3) adding sodium chloride (NaCl) and an extraction solvent in which dibutylhydroxytoluene (BHT) hexane and ethyl acetate are mixed to the cooled product and shaking the resulting mixture to obtain a supernatant.

The invention relates to the technical field of silicone rubber, in particular to liquid silicone rubber based on silicone oil mixing and a preparation method thereof. The silicone rubber comprises the following components in parts by weight: 0.5-0.7 part of a modification inhibitor, 67-75 parts of vinyl-terminated polydimethylsiloxane, 11-13 parts of vinyl silicone oil, 12-18 parts of hydrogen-containing silicone oil, 0.1-0.5 part of a Karstedt catalyst, 10-15 parts of fumed silica, 0.1-0.5 part of 2, 4-diphenyl-1, 3-pentanediol monoisobutyrate and 0.1-0.5 part of a catalyst. The component A comprises the following components in parts by weight: 0.1 to 0.3 part of 2, 6-butylated hydroxytoluene, 0.6 to 1.4 parts of titanium dioxide, 3 to 7 parts of polydimethylsiloxane and 0.07 to 0.09 part of dibutyltin dilaurate; wherein the modified inhibitor is prepared from 2-methyl-3-butyne-2-alcohol and white erucic acid according to the mass ratio of 2 to (5 to 7); the modified inhibitor is adopted, and the toxicity, volatility and compatibility of the 2-methyl-3-butyne-2-alcohol are reduced through the white erucic acid, so that the inhibition effect of the 2-methyl-3-butyne-2-alcohol and the stability of a liquid silicone rubber system are improved, the application range is further expanded, the operation window of the liquid silicone rubber is prolonged, and the quality and performance of the product are ensured.

The invention provides an antirust water-based semi-synthetic cutting fluid and a preparation method thereof. The cutting fluid comprises the following raw materials in percentage by mass: 25%-32% of naphthenic base oil, 1%-3% of a surfactant, 1%-5% of an emulsifier, 2%-4% of oleic acid, 0.5%-2.5% of sodium sulfonate, 1%-5% of a bactericide, 2%-5% of glycerol, 0.2%-0.5% of a defoaming agent, 0.5%-1.5% of a corrosion inhibitor, 1%-5% of an antirust agent and the balance of water. The antirust agent is composed of triethanolamine, butylated hydroxytoluene and citric acid according to the mass ratio of (1-3): (1-2): (0.1-0.5). According to the cutting fluid, proper raw materials are compounded, so that the cutting fluid has relatively good comprehensive properties such as lubricating property, cooling property, corrosion resistance and anti-rust property. Particularly, the antirust agent obtained by compounding triethanolamine, butylated hydroxytoluene and citric acid according to a specific mass ratio is added into the cutting fluid, so that the cutting fluid can obtain excellent antirust performance.

The present invention discloses a vitamin D 3 inclusion compound and a preparation method thereof. The present invention also discloses calcium carbonate D 3 tablets containing the vitamin D 3 inclusion compound and a preparation method thereof. The vitamin D3 inclusion compound of the present invention is calculated by mass percentage and includes: 0.05~0.75% vitamin D3; 80.00~92.25% hydroxypropyl-β-cyclodextrin; 1.00~10.00% antioxidant; 0.00~5.00% anti-adherent; wherein the antioxidant is butylated hydroxytoluene (BHT), vitamin E and sodium ascorbate. The present invention also provides a preparation method of the vitamin D 3 inclusion compound. The vitamin D 3 inclusion compound prepared by the present invention has a high inclusion rate, a high yield, and can be stored stably for a long time. The preparation prepared with the inclusion compound (such as calcium carbonate D 3 tablets) meets pharmaceutical requirements, has good long-term stability, high uniformity, is simple to prepare, and has low cost.

The invention relates to a vegetable oil additive for a power transformer and a preparation method thereof, and belongs to the technical field of power transformers. The invention discloses a high-temperature-resistant oil which comprises the following components in parts by weight: 1.5-3.5 parts of maleic anhydride-styrene copolymer used for reducing the freezing point of the oil and improving the low-temperature fluidity; 0.1 to 0.3 part of nano silicon dioxide hollow spheres; the octylphenol polyoxyethylene ether is used for improving the compatibility with the vegetable oil; 0.5-1.5 parts of butylated hydroxytoluene, which is used for ensuring the oxidation stability of the oil while ensuring the fluidity improvement; the titanate coupling agent is used for improving the dispersity and enhancing the stability and functionality of the vegetable oil. The vegetable oil additive disclosed by the invention can remarkably reduce the viscosity of vegetable oil and improve the fluidity, so that the vegetable oil can transfer heat and current more efficiently in a power transformer, meanwhile, the insulating property and the thermal stability are kept, and the using effect is greatly improved.