105 results about "Liquid paraffin" patented technology

The invention relates to the technical field of high polymer material and automobile part manufacturing, and discloses a high-durability high-low temperature resistant automobile composite sealing strip, which is prepared from the following raw materials: ethylene propylene diene monomer, polyisoprene grafted maleic anhydride, pre-dispersed master batch, carbon black and a vulcanization system. The pre-dispersed master batch takes oxidized polyethlene wax as a carrier to wrap zinc oxide and D-mannitol. The phase change characteristic of the carrier is utilized, active components are isolated in the mixing and extruding stage, and scorching is prevented; the components are released in the high-temperature vulcanization stage to initiate anhydride ring opening, and a double cross-linked network with coexistence of covalent bonds and ionic bonds is constructed. According to the sealing strip, the macromolecular reactive plasticizer is used for replacing part of liquid paraffin, the atomization problem caused by micromolecule migration is solved, the high-temperature compression permanent deformation rate is remarkably reduced through a thermal reversible mechanism of an ion cluster, and excellent low-temperature rebound resilience and processing safety are both considered.

Disclosed in the present invention are a sustained-fragrance-release ceramic material and a preparation method therefor. The present invention relates to the technical field of fragrance products. The preparation method comprises: S1, uniformly mixing flaky aluminum oxide and calcined kaolin powder; S2, heating and stirring the powder while adding molten liquid paraffin in a hot state and an additive, and stirring the mixture to obtain a ceramic slurry; S3, subjecting the prepared ceramic slurry to vacuum evacuation, stirring, and hot-press molding to obtain a ceramic green body; S4, embedding the ceramic green body in sintered aluminum oxide powder, then placing same in a kiln for primary firing, taking out an embedded and fired ceramic block after cooling, and then performing surface treatment; and S5, impregnating the treated ceramic block with fragrance, and after the impregnation with the fragrance is complete, performing encapsulation after the surface of the ceramic block is dried. By optimizing the microporous structure of porous ceramic blocks and using hot-press molding, the present invention resolves the contradiction between light weight and high strength in conventional porous ceramics while exhibiting a relatively high porosity.

This invention belongs to the field of pharmaceutical chemistry, and specifically relates to a compound antifungal cream containing the traditional Chinese medicine ingredient tryptamine ketone and its application. The invention comprises the following components, with the following percentage content: stearic acid 10%~16%, glyceryl monostearate 3%~7%, liquid paraffin 5%~9%, tryptamine 0.1%~0.01%, terbinafine hydrochloride 0.00625%~0.000625%, glycerin 4%, triethanolamine 2%~6%, ethylparaben 0.5%, and the balance being purified water or distilled water. This invention is highly effective, low in toxicity, and exhibits low drug resistance.

To provide an antiadhesive material having good handleability and improved long-term antiadhesive properties.SOLUTION: The present invention relates to an adhesion-preventing material comprising a fiber sheet and an oil agent attached to the fiber sheet, wherein the oil agent comprises liquid paraffin and a surfactant. In the present invention, the adhesion-preventing material preferably has a peak derived from an oil agent in the vicinity of a wave number of 2860cm-1 in analysis by Fourier-transform ultraviolet spectroscopy-total reflection measurement method. In the present invention, the surfactant preferably has intermediate water in which an exothermic peak based on low-temperature crystallization of water is observed at 0 °C or lower in a temperature rising process in differential scanning calorimetry (DSC) in a wet state.SELECTED DRAWING: None

This invention provides a color developer for faded ink stains on Palmyra manuscripts, along with its preparation and application methods, relating to the field of cultural relic conservation and restoration technology. Specifically, it includes component A and component B; component A comprises hydrophobic fumed silica and n-butanol; component B comprises hydrophobically modified cellulose, liquid paraffin, and n-butanol; mixing components A and B yields the color developer for faded ink stains on Palmyra manuscripts. This invention uses low-cost, readily available, and environmentally friendly raw materials to prepare components A and B separately. Through a synergistic effect, the two components enhance the color and clarity of faded ink stains on the surface of the Palmyra manuscript, achieving a re-coloring effect. The prepared color developer is safe and reliable, exhibits significant color development, and also possesses excellent resistance to dry heat aging and ultraviolet aging. Furthermore, it does not alter the appearance of the Palmyra manuscript, has minimal interference with the manuscript itself, and will not damage the manuscript after use.

The application discloses heparin sodium cream and a preparation method thereof, and belongs to the technical field of pharmaceutical preparation production. The heparin sodium cream comprises the following components: heparin sodium, propylene glycol, hydroxyphenyl ethyl ester, sodium dodecyl sulfate, glycerol monostearate and distearate, octadecanol, liquid paraffin, white vaseline and water. The preparation method comprises the following steps: preparing an oil phase and mixing an aqueous phase; taking part of the mixed aqueous phase and the oil phase to form a water-in-oil type primary emulsion; then adding the remaining mixed aqueous phase into the primary emulsion, inducing phase transition into an oil-in-water type cream under mild conditions, and obtaining the finished product after vacuum defoaming and gradient cooling. The application realizes high-efficiency emulsification under mild conditions below 80 DEG C and 3000 rpm through a controlled phase inversion emulsification process, so that the particle size (D99) of the emulsion droplets is less than 5 microns, and the problem that the active substance heparin sodium loses activity under severe conditions is solved completely, and the stability of the product is improved significantly.

This invention belongs to the field of diesel additive technology, and particularly relates to a diesel cetane number improver and its preparation process, comprising the following steps: mixing isooctyl nitrate, n-hexadecane, n-eicosane, oleic acid, and 2,6-di-tert-butyl-p-cresol to obtain a premix; mixing anhydrous ethanol, glycerol, and an emulsifier, adding the premix, reacting, and drying to obtain microparticles; mixing ethyl acetate, isopropanol, n-butanol, and an emulsifier, adding hexadecyl alcohol and EVA-210 to dissolve, to obtain a film-forming solution; mixing ethyl acetate and isopropanol, adding the microparticles and the film-forming solution, removing ethyl acetate, isopropanol, and n-butanol, adding the solution to liquid paraffin and mixing to obtain the diesel cetane number improver. The diesel cetane number improver prepared by this invention can prevent isooctyl nitrate from directly contacting the external environment, slow down the generation rate of free radicals, effectively improve and stabilize the cetane number of diesel, and maintain the cetane number of diesel at a high level for a longer period of time.

The invention relates to a natural latex / graphene aerogel composite material for oil-water separation and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing graphene oxide by an improved Hummers method, and then preparing the natural latex / graphene aerogel by combining a hydrothermal self-assembly method, a bubble template method and a freeze-drying method. And then adjusting the use amount of the natural latex and process parameters to optimize the performance of the natural latex / graphene aerogel, thereby preparing the natural latex / graphene aerogel with optimal performance. The preparation method has the beneficial effects that the problem of oil-water separation performance is solved, excellent adsorption performance is shown on organic reagents (ethanol, n-butane, liquid paraffin, trichloromethane, xylene, kerosene, edible oil, cyclohexane and the like), and the adsorption range is 43.82-189.86 g / g; after 10-20 times of cycle tests, the thickness recovery rate and the absorption capacity are still 92% or above of the initial value.

The application discloses a preparation method of a lithium battery diaphragm with high heat resistance, and relates to the technical field of lithium battery diaphragms. The preparation method comprises the following raw materials in mass fractions: 60-75 parts of polyimide, 10-20 parts of aluminum oxide, 3-8 parts of a heat-resistant modifier, 8-12 parts of PVDF-HFP, 5-8 parts of liquid paraffin, and 0.5-1.5 parts of polyacrylammonium. The application performs pretreatment and modification on boron nitride powder in the preparation process of the lithium battery diaphragm, so that the diaphragm forms an effective heat conduction path, promotes the rapid transmission and diffusion of heat, and improves the overall heat resistance of the diaphragm. Meanwhile, the pretreatment and modification of the boron nitride powder solve the problem that the original boron nitride sheet layer is prone to agglomeration under the action of van der Waals force and hydrogen bonding, and is difficult to uniformly disperse in the polymer matrix. In the preparation process, a segmented drying method is adopted to realize resource recycling, and the method is different from traditional acetone soaking and dissolution liquid paraffin, so that the swelling of the base film is avoided.

This invention discloses a photovoltaic heating phase change thermal storage device based on power engineering design, belonging to the technical field of thermal storage devices. Two moving blocks are symmetrically embedded inside a ring track. A stirring gear is rotatably mounted on the top of each moving block, and a stirring rod is connected to the bottom of the moving blocks. Two support pipes are installed on the bottom inner side of the thermal storage tank. Two moving frames are slidably mounted on the top of the support pipes in the middle of the movable cavity. A filter screen is fixed inside each moving frame. This invention uses a ring rack to drive the stirring gear to rotate, thereby rotating the stirring rod and reducing the temperature gradient during the solid-liquid phase change process. As the stirring rod moves with the moving blocks, its effective range increases, making the internal temperature distribution of the solid-liquid paraffin more uniform. Furthermore, the filter screen pushes the solid in the solid-liquid coexisting paraffin solution closer to the foamed copper plate and the thermal storage tank, bringing the unmelted solid paraffin closer to the heat source, further improving thermal storage efficiency.

The present invention relates to a composition, in particular a cosmetic composition, comprising, in a physiologically acceptable medium, at least one endolysin derived from Staphylococcus aureus bacteriophage and at least one oil other than liquid paraffin. The invention also relates to the use of such a composition for the prevention and / or treatment of skin conditions associated with colonization of Staphylococcus aureus in a subject in need thereof, and in particular for the prevention and / or treatment of acne and / or eczema in a subject, and to a non-therapeutic cosmetic method for caring for keratin materials, in particular skin, it comprises at least one step of topically applying such a composition to the keratin material.

An ozone-containing composition comprises a volatile oily solvent, a volatile aqueous solvent, and ozone. The volatile oily solvent is present in a concentration ranging from 1 wt % to 99 wt % based on the total composition. The volatile aqueous solvent is present in a concentration ranging from 1 wt % to 99 wt % based on the total composition. The volatile oily solvent is a volatile liquid paraffin having a boiling point of 170 degrees and being lipophilic, a volatile silicone oil having a boiling point ranging from 170 degrees to 200 degrees and being lipophilic, or a mixture of the volatile liquid paraffin and the volatile silicone oil. The volatile liquid paraffin is one or more volatile liquid paraffins selected from the group consisting of light isoparaffin, light liquid isoparaffin, and hydrogenated polyisobutene. The volatile silicone oil is a volatile silicone oil containing cyclic dimethyl silicone oil. The volatile aqueous solvent is a volatile alcohol having a boiling point of 150 degrees or less and being hydrophilic and lipophilic, a volatile ketone having a boiling point of 150 degrees or less and being hydrophilic and lipophilic, or a mixture of the volatile alcohol and the volatile ketone. The volatile alcohol comprises ethanol, isopropyl alcohol, or 1-pentanol. The volatile ketone comprises methyl ethyl ketone, or 2-hexanone. The ozone-containing composition is for use in killing insects, repelling pests, or decontaminating and decomposing anticancer drugs.

The invention relates to a magnesium ion doped sodium ferric phosphate pyrophosphate material as well as a preparation method and application thereof, belongs to the technical field of sodium ion batteries, and solves the problems of low density and low capacity of the existing sodium ferric phosphate pyrophosphate. Comprising the following steps: mixing liquid paraffin with Span 80, heating and stirring to obtain an oil phase; the preparation method comprises the following steps: adding part of a Na source, part of a P source and a Fe < + > source into water to prepare slurry, and adjusting pH to obtain a water phase A; dropwise adding the water phase A into the oil phase to form a water-in-oil emulsion; dispersing a Mg source, a Fe < 2 + > source, the residual Na source and the residual P source in water, adding polyvinylpyrrolidone, and carrying out ball milling to obtain a water phase B; dropwise adding the water phase B into the water-in-oil emulsion, stirring, adding glutaraldehyde, and preserving heat to form a precursor; and demulsifying the precursor, washing, drying, placing in an inert atmosphere, heating to 300-350 DEG C, preserving heat, heating to 750-800 DEG C, preserving heat, and cooling to obtain the magnesium ion doped sodium ferric phosphate pyrophosphate. The magnesium ion doped sodium ferric phosphate pyrophosphate disclosed by the invention is high in density and excellent in electrochemical performance.

The invention discloses a special non-silicon / silicon-containing oil agent for mesophase pitch-based carbon fibers and a preparation method of the special non-silicon / silicon-containing oil agent, and belongs to the technical field of oil agents, the special non-silicon / silicon-containing oil agent comprises the following components by mass: 25.00%-30.00% of non-silicon mineral oil, 3.00%-10.00% of silicon-containing silicon oil, 1.00%-3.00% of a cationic surfactant, 0.50%-1.50% of a nonionic surfactant, 0.10%-0.50% of a dispersant, and the balance of deionized water; the non-silicon mineral oil is liquid paraffin oil, the thermal decomposition residual rate of the liquid paraffin oil at the temperature of 260 DEG C to 270 DEG C is 1.40 percent to 2.00 percent, and the thermal decomposition residual rate of the liquid paraffin oil at the temperature of 510 DEG C to 520 DEG C is 0.83 percent to 1.24 percent. The special non-silicon / silicon-containing oil agent for the mesophase pitch-based carbon fiber can be decomposed and volatilized more thoroughly, so that scorched particles formed by carbonization of residues are greatly reduced, and melting and surface defects of the mesophase pitch-based carbon fiber are effectively avoided.

The application discloses a sorghum aphid repellent, wherein the efficacy component is trans-2-decenal, and the trans-2-decenal can be configured into a liquid paraffin solution of trans-2-decenal for use, preferably a liquid paraffin solution of 0.1 mu g / mu L-0.5 mu g / mu L trans-2-decenal. The sorghum aphid repellent is prepared from existing chemical products, the components are stable, the preparation method is simple, the repellent effect on the sorghum aphid is obvious, and the sorghum aphid repellent is expected to be used in the prevention and control of the sorghum aphid. The repellent can be used for preventing the harm of the sorghum aphid, the compound in the application is an industrial raw material, the preparation method is simple, the price is low, the compound is safe for human and livestock, and the environment is not polluted, so the application has a wide application prospect.

The invention relates to the technical field of inorganic mesoporous materials, in particular to an amplification preparation system of millimeter-scale mesoporous carbon spheres. The preparation method comprises the following steps: mixing a phenolic precursor aqueous solution, an aldehyde precursor aqueous solution and a silicon dioxide aqueous solution, and performing prepolymerization to obtain a prepolymer solution; dropwise adding the prepolymer solution into liquid paraffin oil, carrying out reversed-phase suspension polymerization reaction, and then carrying out aging treatment to obtain phenolic resin spheres; calcining the phenolic resin spheres in an inert atmosphere to obtain millimeter-scale carbon spheres; and carrying out etching treatment on the millimeter-level carbon spheres to obtain the millimeter-level mesoporous carbon spheres. The invention creatively provides a pre-polymerization-molding-aging combined system in the engineering mass production of the millimeter-scale mesoporous carbon spheres, determines an amplified preparation process, and defines the influence of process parameters on the product quality; the engineering synthesis steps of the millimeter-scale mesoporous carbon spheres are optimized, the synthesis uncertainty is reduced, the cost of raw materials is reduced, and the large-scale production is facilitated.

This invention discloses a skin cream for chapped hands and feet and its preparation process, belonging to the field of skin cream preparation technology. The skin cream is composed of ginseng leaf and stem extract, royal jelly, glycerin, octadecanol, glyceryl stearate, liquid paraffin, sodium lauryl sulfate, ethylparaben, fragrance, and purified water in a specific mass ratio. Its preparation process includes steps such as heating and melting the oil and water phases separately, emulsifying and stirring, cooling and adding active ingredients, and aging. This product, through the synergistic effect of moisturizing and active repairing ingredients, can effectively relieve dry and cracked skin, promote healing, and has the advantages of stable formula, gentle skin feel, and high safety.

The invention relates to a preparation method of spherical hexagonal boron nitride particles, and belongs to the technical field of inorganic nonmetal heat-conducting fillers. The invention aims to solve the technical problems that the prior art depends on a spray granulator, the equipment cost is high, and air holes are easily formed in particles due to quick drying. The preparation method comprises the following steps: carrying out ball-milling treatment on hexagonal boron nitride powder through a water medium, and mixing the hexagonal boron nitride powder with an aluminum oxide additive and a water-based binder solution to prepare uniform slurry; extruding the slurry into a hydrophobic container containing liquid paraffin, and dispersing under mechanical stirring to form slurry liquid drops; then transferring the oil phase containing the liquid drops into a hydrophobic flat plate container, and slowly drying and shaping at 20-80 DEG C; and washing with an organic solvent, sieving and drying to obtain the spherical hexagonal boron nitride particles. According to the method, the production cost is remarkably reduced; through the combined action of oil-phase buoyancy and a hydrophobic surface and a controllable slow drying process, internal pores of the particles are effectively reduced, and the spherical filler particles which are good in sphericity degree, compact in structure and uniform in auxiliary agent distribution are obtained.

The application discloses an engine cooling system and a thermostat structure, which comprises an engine cooling system body port and a thermostat body, wherein the engine cooling system body port is composed of a thermostat mounting seat, a connecting pipe, a radiator, a radiator fan, a temperature sensor, a fan assembly, a cooling liquid separator and a water pump; the fan assembly is mounted on the radiator; two groups of radiator fans are mounted on the fan assembly; a radiator pipe and the temperature sensor are mounted on the fan assembly; the thermostat body is mounted on the thermostat mounting seat of the engine cooling system body port; and the water pump is mounted on the end of the thermostat mounting seat. The engine cooling system and the thermostat structure have the advantages that the pressing seat is clamped inside the containing groove, the pressing seat and the containing groove are both provided in an S-shaped section, the pressing seat and the containing groove are sealed through a sealing gasket, and the pressing seat is locked through a fixing bolt, so that liquid paraffin is prevented from overflowing between the pressing seat and the containing groove, paraffin is prevented from overflowing, and the reliability of the thermostat body is improved.

The application discloses a high-ignition-point high-thermal-conductivity mineral insulating oil and a preparation method thereof, and belongs to the technical field of insulating oil preparation, and is used for solving the technical problem that the ignition point and the thermal conductivity of the mineral insulating oil in the prior art need to be further improved, and specifically comprises the following raw material components in parts by weight: 80-90 parts of modified mineral base oil and 5-6 parts of an insulating thermal conductor, in the application, a flame-retardant modifier is first synthesized, then free radical initiation is adopted to graft glycidyl methacrylate and the flame-retardant modifier to liquid paraffin to prepare modified mineral base oil containing an epoxy group; subsequently, modified nitrogenized modified graphene oxide is prepared by using the prepared modified nitrogenized modified graphene oxide, modified graphene is obtained, the modified graphene and epoxidized soybean oil are crosslinked under catalysis of triethylamine to generate modified soybean oil, and an insulating thermal conductor is prepared by introducing a perfluoro group, and finally, the modified mineral insulating oil is synthesized by reacting the components at high temperature.

The invention provides a preparation method of a metal anti-rust volatile film layer. The preparation method comprises the following steps: removing rust from metal by adopting a rust remover; the rust remover comprises inorganic acid; the metal surface is coated with an anti-rust agent, and the anti-rust agent reacts with the rust remover to generate an anti-rust volatile film layer; the antirust agent comprises the following components: 10 to 13 percent of sodium silicate, 10 to 13 percent of silicic acid, 50 to 70 percent of solvent, 5 to 10 percent of liquid paraffin and 1.5 to 3 percent of surfactant; the preparation method of the antirust agent comprises the following steps: fully and uniformly mixing silicic acid and sodium silicate, adding a solvent, liquid paraffin and a surfactant, cooling to room temperature after the reaction is completed, and standing to take supernate as the antirust agent. The rust remover is good in antirust effect, fast in film forming, good in rust removal effect, low in viscosity, high in utilization rate and environmentally friendly, and is used for surface rust removal of large steel structures.

The present application relates to a kind of pressure-ultrasonic-microwave processing preparation baking-free phosphogypsum building material method, comprising the following steps: 1) phosphogypsum is added with calcium sulfate supersaturated liquid, rubber powder, calcium stearate, liquid paraffin, aluminate, succinic acid, graphene oxide in high-speed mixer in turn, and mixed uniformly to obtain modified phosphogypsum;2) modified phosphogypsum is simultaneously treated with ultrasonic and pressing, and modified phosphogypsum block is obtained;3) modified phosphogypsum block is treated with microwave, and baking-free phosphogypsum building material is obtained.The present application has high waste rate, and low carbon emission, and the phosphogypsum ratio in the final baking-free phosphogypsum product of the present application can reach more than 90%, and compared with the traditional baking-free brick needing to be treated by autoclave curing, the present application uses normal temperature forming, low-temperature treatment, and the carbon emission generated in the product preparation process is lower, and the baking-free phosphogypsum building material prepared by the method of the present application has good economic benefits.

The application discloses a TPE composition for a protective film adhesive layer and a preparation method thereof, and relates to the technical field of polymer materials. The application comprises the following steps: mixing and internally mixing styrene-ethylene-butylene-styrene block copolymer and liquid paraffin, then adding modified elastomer, synergistic powder, modified nanoparticles, piperazine pyrophosphate, aluminum hypophosphite, L-arginine and a compatilizer and mixing, adding a crosslinking aid and mixing after cooling, pouring into a mold after discharging and pre-pressing under a nitrogen atmosphere, then gradient crosslinking, cooling, demolding and obtaining the TPE composition for the protective film adhesive layer. The addition of specific proportions of piperazine pyrophosphate, aluminum hypophosphite and L-arginine effectively improves the flame retardant capacity and ultraviolet resistance of the TPE composition; the introduction of the synergistic powder and other components further improves the interfacial adhesion, flame retardant capacity and ultraviolet resistance. Therefore, the application has a wider application prospect.

The invention relates to the technical field of preparation of intelligent composite anticorrosive coatings, in particular to 8-hydroxyquinoline-polyglycolic acid microspheres, a preparation method and an anticorrosive coating. The method comprises the following steps: jointly dissolving polyglycolic acid and 8-hydroxyquinoline in hexafluoroisopropanol to obtain a water-phase solution; mixing liquid paraffin and an emulsifier to obtain an oil phase solution; dropwise adding the water-phase solution into the oil-phase solution to form water-in-oil type emulsion droplets, carrying out emulsion polymerization reaction in the water-in-oil type emulsion droplets to obtain 8-hydroxyquinoline-polyglycolic acid microspheres with corrosion inhibition performance and fluorescence indication function, and mixing the 8-hydroxyquinoline-polyglycolic acid microspheres with epoxy resin and a curing agent to prepare the anticorrosive paint. The corrosion inhibition performance and the fluorescence indication effect of 8HQ are utilized, and the thermoplasticity and the fluidity of PGA are utilized, so that the anticorrosive coating is endowed with the self-repairing capability, the problems of unstable performance and single function are solved, and the novel intelligent anticorrosive coating integrating the functions of corrosion protection, in-situ monitoring and self-repairing is realized.

The invention discloses a compound nysfungin ointment, which comprises an active component, a preservative, a humectant, a thickening agent, a grease matrix and an antibacterial agent, the active component is selected from one or more of self-made mycotoxin, neomycin sulfate, permethrin and triamcinolone acetonide, the preservative is selected from benzalkonium chloride, the humectant is selected from glycerol, the thickening agent is selected from glycerol, and the grease matrix is selected from a grease matrix. The humectant is selected from humectant, the thickening agent is selected from carbomer, the grease matrix is selected from liquid paraffin and / or wool fat, the antibacterial agent is selected from thymol, and the ratio of the humectant to the thickening agent is (2-7): (0.5-3) in parts by mass. By accurately controlling the proportion of the humectant to the thickener, the texture of the ointment can be optimized, so that the skin permeability is improved, the medicine absorption is promoted, the treatment effect is improved, in addition, the form of the ointment can be kept, the active ingredients are prevented from being degraded, and the shelf life of the preparation is prolonged.

This application relates to the field of pharmaceutical technology, and in particular to a topical ointment formulation and its preparation method. The formulation uses Sonicate as the active ingredient, combined with petrolatum, liquid paraffin, a solubilizing and penetration-enhancing system, and emulsifiers as excipients, to form an O / W type cream, an oil-based or water-soluble ointment. The preparation process employs a low-temperature dosing method at 40°C to ensure drug activity and inhibit crystallization. This application achieves high-concentration retention in local skin tissue through topical administration, significantly reducing radiation damage scores and pathological damage, while resulting in extremely low systemic plasma exposure, avoiding the systemic toxicity of oral administration, and providing a safe and efficient means for the clinical prevention and treatment of radiation-induced skin damage.

The application discloses a tinned copper strip surface protecting agent and a preparation method thereof. Components of the protecting agent include, in mass parts, 1.1-5.9 parts of a composite film forming agent, 0.01-0.06 parts of a surfactant, 80-95 parts of an organic solvent and 1-18 parts of D series solvent oil. The composite film forming agent is compounded by liquid paraffin, polydimethylsiloxane, tridecafluoro octyl triethoxysilane and heptadecafluorodecyl trimethoxysilane. The application uses n-heptane as a main solvent, adds a small amount of liquid paraffin, polydimethylsiloxane and tridecafluoro octyl triethoxysilane, and under the auxiliary action of a surfactant acetylene glycol polyoxyethylene ether, can form a uniform and dense waterproof and antifouling protective layer on the surface of the tinned copper strip. The tinned copper strip coated by the protecting agent can be stored for a long time without causing surface oxidation, and can still keep smooth even in a storage or transportation environment with relatively high humidity. The formula process is simple, and the service life and reliability of the tinned copper strip are improved.

The present application relates to the field of industrial explosive, and discloses a porous granular ammonium oil explosive and a preparation method thereof.The porous granular ammonium oil explosive comprises an ammonium oil phase and porous granular ammonium nitrate, and the content of the ammonium oil phase is 4-7 wt% based on the weight of the porous granular ammonium oil explosive; the ammonium oil phase comprises Fischer-Tropsch synthesis liquid paraffin, Fischer-Tropsch cracking minus one-line oil, Fischer-Tropsch hydrogenation heavy oil and optional pour point depressant; the Fischer-Tropsch hydrogenation heavy oil is selected from one or two or more of Fischer-Tropsch cracking minus two-line oil, Fischer-Tropsch cracking minus three-line oil and Fischer-Tropsch hydrogenation cracking tail oil; the total weight of the ammonium oil phase is 100 wt%, the content of the Fischer-Tropsch synthesis liquid paraffin is 60-95 wt%, the content of the Fischer-Tropsch cracking minus one-line oil is 2-30 wt%, the content of the Fischer-Tropsch hydrogenation heavy oil is 2-5 wt%, and the content of the pour point depressant is 0-0.5 wt%.The porous granular ammonium oil explosive has high flash point, low pour point and low freezing point, is safer and has longer storage time.

This invention relates to a modified long-acting sustained-release coating agent for topical liquid formulations, its preparation method, and its application, belonging to the field of pharmaceutical preparations. The modified long-acting sustained-release coating agent for topical liquid formulations comprises a carrier and a topical liquid formulation in a mass ratio of 1:1 to 3:2. The carrier includes PVA, glycerin, liquid paraffin, β-hydroxyethyl urea, glyceryl stearate, PEG stearate, and purified water. The topical liquid formulation includes one or more of the following: tincture, liniment, solution, lotion, ointment, oil, and rinse. This invention's long-acting sustained-release coating agent is a universal coating agent, safe to use, non-irritating, and has no incompatibility with topical liquid formulations. It facilitates film formation, has a short film-forming time, and produces a flexible film that is not easily detached.

The invention discloses a photothermal stable fluticasone propionate emulsifiable paste preparation and a preparation process thereof, and relates to the technical field of external emulsifiable paste. Comprising the following steps: step 1, (1) adding isopropyl myristate and cetostearyl alcohol into liquid paraffin, mixing, heating and stirring to obtain an oil phase; (2) adding citric acid, sodium citrate, imidazolidinyl urea, a photo-thermal stabilizer and polyethylene glycol hexadecyl-octadecyl ether into deionized water, mixing, heating and stirring to obtain a water phase; (3) adding fluticasone propionate and propylene glycol into deionized water, heating and stirring to obtain a fluticasone propionate solution; and 2, adding the water phase into the oil phase, stirring, adding a fluticasone propionate solution, uniformly mixing, adding propyl hydroxybenzoate and methyl hydroxybenzoate, and standing at room temperature to obtain the fluticasone propionate emulsifiable paste preparation. The fluticasone propionate emulsifiable paste preparation prepared by the invention has good photo-thermal stability and meets the requirements of external emulsifiable paste.