674 results about "Lauric acid" patented technology

The invention relates to a mildew-proof silicone sealant with high curing rate and high adhesive strength, and belongs to the technical field of adhesives. The anti-mildew coating is prepared from alpha, omega-dihydroxy polydimethylsiloxane, dimethyl silicone oil, fumed silica, phenoxy resin coated nano calcium carbonate, a modified hydroxypropyl-gamma-cyclodextrin loaded mildew preventive, dibutyltin dilaurate, methyltrimethoxysilane and a curing accelerator. According to the mildew-proof silicone sealant with the high curing rate and the high adhesive strength, the surface drying time is 9-13 minutes, the 24-hour curing depth is 6.3-7.2 mm, the adhesive strength is 3.0-3.6 MPa, the tensile strength is 5.8-6.4 MPa, the shear strength is 3.0-3.9 MPa, the elongation at break is 410-457%, and the mildew-proof grade is 0 grade in 30 days, 60 days, 180 days and 360 days.

A composition is formulated in a therapeutic amount to maintain and promote hair health and growth in a human in need thereof. The composition may comprise a shelf stable, supercritical CO2 fluid extracted, enhanced lipidosterolic extract of Serenoa repens (LSESr). The enhanced LSESr may have a ratio of free fatty acids to total fatty acids that is greater than about 83.0% and an enrichment of lauric, myristic, oleic and linoleic acids as free fatty acids to total free fatty acids that is about 81.0% or greater. An enrichment of linoleic and linolenic acids together may be greater than about 4.0%.

A dietary supplement composition is formulated in a therapeutic amount to maintain and promote urinary and prostate function in a human. The composition includes a shelf stable, supercritical CO2 fluid extracted, enhanced lipidosterolic extract of Serenoa repens (LSESr). The enhanced LSESr has a ratio of free fatty acids to total fatty acids that is greater than about 83.0% and an enrichment of lauric, myristic, oleic and linoleic acids as free fatty acids to total free fatty acids that is about 81.0% or greater.

The invention relates to the technical field of feed products, in particular to a fatty acid composition and application thereof in preparation of products for improving intestinal health. The fatty acid composition comprises arachidonic acid, docosahexaenoic acid, eicosapentaenoic acid, butyric acid and lauric acid, or a precursor substance capable of releasing the fatty acid in the digestive tract, and the mass of the fatty acid composition is calculated according to the mass of the arachidonic acid, the mass of the docosahexaenoic acid, the mass of the eicosapentaenoic acid, the mass of the butyric acid and the mass of the lauric acid. The additive is prepared from the following components in parts by weight: 7-10 parts of arachidonic acid, 3-7 parts of docosahexaenoic acid, 3-7 parts of eicosapentaenoic acid, 2-5 parts of butyric acid and 1-3 parts of lauric acid. The composition can effectively relieve inflammation and diarrhea, regulate intestinal flora and improve intestinal health, and drug resistance is not prone to being generated.

The invention belongs to the field of hydraulic oil, and particularly discloses a flame-retardant hydraulic oil composition and a preparation method thereof. The hydraulic oil composition is prepared from the following components in parts by weight: 67 to 97 parts of main base oil, 5 to 30 parts of auxiliary base oil, 1.2 to 1.5 parts of a lubricating agent, 1.5 to 2.0 parts of an antioxidant, 0.03 to 0.06 part of a corrosion inhibitor, 0.01 to 0.08 part of a demulsifying agent and 0.01 to 0.08 part of a de-foaming agent, the auxiliary base oil is one of trimethylolpropane trinonanoate, trimethylolpropane caprylic capric acid ester and trimethylolpropane caprylic laurate; the components are sequentially mixed to obtain the flame-retardant hydraulic oil. According to the invention, a specific main-auxiliary base oil system is compounded with other additives, so that the final oil product has excellent anti-oxidation characteristic, the use temperature upper limit is improved, the service life of the oil product is further prolonged, and the stability and low-temperature pumping capacity of the oil product in the use process are improved.

The invention relates to a polyester fiber with a phase change temperature regulation function and a preparation method thereof, and belongs to the technical field of textile materials. The polyester fiber with the phase change temperature regulation function comprises a skin layer unit and a core layer unit, the skin layer unit adopts a polyester fiber base material, the core layer unit adopts lauric acid, a cavity is formed in the polyester fiber base material, and the lauric acid is packaged in the cavity of the polyester fiber base material. The polyester fiber with the phase change temperature adjusting function can be prepared, the preparation method is simple, and the polyester fiber can be well applied to textiles such as outdoor work clothes, sportswear and home textile bedding.

The invention relates to the field of automobile part manufacturing, and particularly discloses a barrier layer direct bonding type TPE material for an automobile air conditioner pipeline system and a preparation method and application of the barrier layer direct bonding type TPE material. The TPE material is prepared from the following raw materials: a thermoplastic elastomer TPE, PA, EVOH, polyether block amide, a glycidyl methacrylate grafted olefin copolymer elastomer, a toughening compatilizer, composite modified montmorillonite, a cold-resistant additive, an antioxidant and paraffin oil. Wherein the composite silane coupling agent, lauric acid and N, N '-carbonyldiimidazole are adopted to modify the nano-montmorillonite, so that the dispersity of nano-montmorillonite particles is improved, the formation of aggregates is effectively reduced, and the mechanical property of the material is enhanced; the polyether block amide, the glycidyl methacrylate grafted olefin copolymer elastomer and the toughening compatilizer have a synergistic effect, so that good adhesiveness of the TPE material and the barrier layer is realized.

The invention discloses a self-assembling emulsifier, comprising emulsifier A, emulsifier B and emulsifier C; the mass ratio thereof is (0.05-3):(0.05-1):(0.05-3); emulsifier A comprises at least one of PPG-24-glycerol polyether-24, PPG-decyl tetradecanol polyether-24, and di(PPG-2 myristyl alcohol polyether-10) adipate; emulsifier B comprises at least one of polyquaternium-52, polyquaternium-61, polyquaternium-74, and polyquaternium-37; emulsifier C comprises at least one of PEG-40 hydrogenated castor oil, PEG-80 sorbitan laurate, PPG-5-cetyl alcohol polyether-20, coconut alcohol polyether-7, and PPG-1-PEG-9 lauryl glycol ether. The invention also discloses glabridin liposomes prepared by the self-assembling emulsifier. The self-assembling emulsifier of the invention can self-assemble and emulsify glabridin to form colorless or slightly yellowish clear and transparent glabridin liposomes with uniform particle size and good hydrophilicity; and the preparation process is simple, avoiding the addition of organic solvents such as methanol, ethanol, and chloroform.

The invention discloses a polyurethane cleaning-resistant antifouling coating based on an oxime-carbamate bond and a preparation method thereof, wherein the preparation method comprises the following steps: S1. After dehydrating the polyether diol, the polyether diol is mixed evenly with a diisocyanate, heated to 70-80°C, and a polymer A is obtained by reaction; S2. Polymer A, a solvent, a dioxime and a dibutyltin dilaurate catalyst are weighed, mixed evenly, and a polymer B is obtained by reaction; S3. Polymer B is coated on a substrate to form a sample, the prepared sample is placed at room temperature, and then the temperature is raised to 60°C for curing to obtain a coating. The antifouling coating of the present invention has good wear resistance, and the coating can undergo a hydrolysis reaction with seawater based on an oxime-carbamate bond, can meet the demand for the coating to be resistant to cleaning, and can solve the problem of marine organisms adhering to the surface of the hull to cause invasion of alien species.

The invention belongs to the technical field of feed additives, and particularly relates to a nutrient for improving the quality of pilose antler and a preparation method thereof. The nutrient comprises the following raw materials in parts by weight: 15-20 parts of aged zeolite, 6-9 parts of modified montmorillonite, 1-5 parts of oyster polypeptide and 0.2-0.5 part of vitamin. The preparation process of the modified montmorillonite comprises the following steps: adding montmorillonite into a zinc chloride solution, then adding octadecyl trimethyl ammonium chloride to obtain a mixed solution, adjusting the pH value of the mixed solution, carrying out a stirring reaction, and carrying out purification and calcination to obtain pretreated montmorillonite; adding the pretreated montmorillonite into a mixed solution of ethanol and water, then adding a silane coupling agent, and carrying out a heating reaction to obtain silane coupling agent modified montmorillonite; adding the silane coupling agent modified montmorillonite into DMF (Dimethyl Formamide), then adding lauric acid, DCC (Dimethyl Cellulose) and DMAP (Dimethyl Ammonium Phosphate), and carrying out heating reaction to obtain the modified montmorillonite. All the components of the nutrient are matched for use, so that the yield and quality of pilose antler can be effectively improved.

A germ-repellent plastic contains an anti-biofouling compound, and a basic plastic. The anti-biofouling compound is optionally selected from the group of a polyol, a polyether polyol, a polyol derivative, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of a polyether, a poly (ethylene glycol) ether, a polysorbate, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of poly (ethylene glycol) sorbitan monolaurate, poly (ethylene glycol) sorbitan monooleate, poly (ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof. The basic plastic is not a blend of a low-density polyethylene polymer and an ethyl vinyl acetate copolymer, a blend of a polypropylene polymer and an ethyl vinyl acetate copolymer, a blend of polyolefin elastomer polymers and a polyvinyl chloride polymer. A method for manufacturing such a germ-repellent plastic and a germ-repellent plastic item are also described.

The invention belongs to the field of surfactants, discloses a synthesis method of lauroyl glycine, and aims to solve the problems that a reaction system is free of flowability, thick, difficult to purify, low in production amount of lauroyl glycine, incapable of meeting green and environment-friendly requirements and the like under the condition of no organic solvent. According to the method, lauric acid and glycine are used as raw materials, novozymes 435 lipase is used as a catalyst, lauroyl glycine is synthesized through a reaction, lauric acid is added in batches, the appropriate pH value is adjusted, the addition amount of lauric acid is increased, the problem that a reaction system is thick is solved, the production amount of lauroyl glycine is greatly increased, and the method is suitable for industrial production. The conditions of green industrial production of the lauroyl glycine are met.

Compositions and methods for cleansing the eyelid and treating an ocular condition with an ophthalmic composition consisting essentially of water, PEG-80 sorbitan laurate, methyl gluceth-20, PEG-120 methyl glucose dioleate, phytosphingosine HCl, decyl glucoside, 1,2-hexanediol, caprylyl glycol, disodium cocoamphodiacetate, panthenol, polyaminopropyl biguanide, sodium chloride, potassium chloride and calcium chloride.

The invention belongs to the technical field of feed additives, and particularly provides a compound preparation for improving the digestibility of dry coconut shreds, which comprises a compound enzyme preparation, the compound enzyme preparation comprises xylanase with the enzyme activity of 0.5 million U / g to 25 million U / g, glucanase with the enzyme activity of 0.8 million U / g to 200 million U / g, mannase with the enzyme activity of 10,000 U / g to 200 million U / g, cellulase with the enzyme activity of 1.2 million U / g to 25 million U / g, pectinase with the enzyme activity of 10,000 U / g to 25 million U / g, galactosidase with the enzyme activity of 10,000 U / g to 300 million U / g and phytase with the enzyme activity of 0.8 million U / g to 200 million U / g. According to the compound preparation provided by the invention, macromolecular substances such as starch in the dry coconut shreds can be degraded into micromolecular substances which are easy to digest, so that the digestion utilization rate is greatly increased; fat is degraded, fatty acid components such as palmitic acid, oleic acid and lauric acid in the coconut shreds are released, and the effects of reducing blood pressure, promoting digestion and the like are achieved; meanwhile, the generated active substances can improve the disease resistance of animals, improve the health state of organisms, improve the nutritional value of the dried shredded coconut and increase the variety of unconventional feed raw materials.

The invention discloses a winery wastewater treatment method which comprises the following steps: separating fusel, phosphate and ammonia nitrogen substances in winery wastewater by using a hydrophobic eutectic solvent; the hydrophobic deep-eutectic solvent comprises a hydrogen bond acceptor and a hydrogen bond donor; the hydrogen bond acceptor is composed of menthol and tetrabutylammonium chloride; the hydrogen bond donor is lauric acid. The solvent has unique hydrophobicity and selectivity, and effective separation and recovery of fusel, phosphate and ammonia nitrogen in winery wastewater are realized. The technical breakthrough solves the problems of high cost, complex operation, low separation efficiency and the like in the traditional wastewater treatment method, not only simplifies the operation process and reduces the treatment cost, but also remarkably improves the safety and stability of the treatment process, thereby achieving a win-win situation between environmental protection and economic benefits.

The invention discloses a halogen-free low-volatility anti-icing photo-thermal super-hydrophobic coating for the surface of a wind power blade and a preparation method thereof. The coating is prepared by compounding functionalized modified multi-walled carbon nanotubes, functionalized modified nano titanium nitride, polydimethylsiloxane / nano silicon dioxide modified epoxy resin and a curing agent. Wherein the multi-walled carbon nanotubes are subjected to amidation and dual functionalization of lauric acid and 3-aminopropyl triethoxy silane; the surface of the nano titanium nitride is uniformly modified through bionic polydopamine coating; hydroxyl-terminated polydimethylsiloxane and nano SiO are doped into an epoxy resin base material, so that the system is endowed with low surface energy and high weather-resistant binding force. After curing and film forming at room temperature for 24 hours or at 80 DEG C for 2 hours, the water contact angle is greater than or equal to 155 DEG C, the ice adhesion strength is less than or equal to 10 kPa, the photo-thermal temperature is greater than or equal to 40 DEG C, and the performance is not attenuated after 50 times of heating and cooling tests; and after 150-hour damp heat, 500-hour ultraviolet radiation, acid corrosion and abrasive paper friction, the coating does not blister or fall off. The coating disclosed by the invention is green and environment-friendly, low in curing energy consumption, high in photo-thermal temperature rise and strong in super-hydrophobic durability, and can be used for remarkably improving the long-term anti-icing capability of wind power blades in cold and high-humidity regions.

The invention belongs to the technical field of acrylic plates, and particularly relates to a continuous casting high-hardness acrylic plate and a preparation method thereof.The preparation method comprises the steps that siloxane modified methacrylic acid, methyl methacrylate and n-butyl methacrylate are mixed, an azo initiator is added into the mixture, and then stirring and mixing are conducted to obtain pre-polymerized slurry; the preparation method comprises the following steps: mixing hydroxyl-terminated ether polysiloxane, isophorone diisocyanate and a catalyst dibutyltin dilaurate, reacting to obtain a macromolecular prepolymer, and then adding an end-capping reagent and a photoinitiator into the macromolecular prepolymer to obtain coating slurry; and injecting the pre-polymerized slurry between two annular steel belts which operate synchronously, coating the two annular steel belts with the coating slurry, and carrying out ultraviolet curing to obtain the high-hardness acrylic plate. Through ultraviolet curing, a high-hardness layer is formed outside the acrylic plate, polyurethane is modified by hydroxyl-terminated ether polysiloxane, the rigidity of a soft chain segment is improved by a polysiloxane chain segment, and the hardness of polyurethane is improved.

The invention discloses a preparation method of gelatinized euphausia superba oil microcapsules, which comprises the following steps: selecting glycerol laurate as an emulsifier, mixing and stirring the glycerol laurate and euphausia superba oil, standing to obtain oleogel, mixing the oleogel as a core material with a wall material consisting of a mixture of concentrated milk protein, whey powder and corn syrup to prepare an emulsion, and preparing the gelatinized euphausia superba oil microcapsules. And preparing the gelatinized euphausia superba oil microcapsule by adopting a spray drying method. The gelatinized microcapsule prepared by the method disclosed by the invention is relatively uniform in distribution, relatively smooth in capsule body surface and relatively complete in capsule wall, and the euphausia superba oil can be well embedded by a wall material to present a one-capsule multi-core structure. The gelated euphausia superba oil microcapsule has good compactness, can effectively mask the bad smell of the euphausia superba oil, and improves the sensory performance of the euphausia superba oil.

The invention relates to the technical field of biochar preparation, and discloses organic acid modified biochar as well as a preparation method and application thereof. The preparation method of the organic acid modified biochar comprises the following steps: 1) performing calcination modification on biochar to obtain primary modified biochar; (2) putting the primary modified biochar prepared in the step (1) into hydrochloric acid, and carrying out impregnation modification on the primary modified biochar to obtain secondary modified biochar; and 3) mixing lauric acid, octadecylamine and the secondary modified biochar prepared in the step 2), heating, dipping and modifying to obtain the organic acid modified biochar. The anti-permeability coefficient of the organic acid modified biochar provided by the invention can reach 0.54 * 10 <-8 > m / s, and the organic acid modified biochar has excellent anti-permeability performance and can be applied to anti-permeability of building engineering.

A method for synthesizing a high-purity Nε-lauroyl lysine. The method comprises: stirring raw materials including lysine and / or a lysine salt, an alkaline compound, water, low-carbon alcohol and a water-insoluble solvent until uniform to form a two-phase microemulsion; adding, in a dropwise manner, lauric acid and / or lauroyl halide to the two-phase microemulsion, and stirring same for a reaction; and after the reaction is completed, subjecting same to acid neutralization and precipitation, so as to obtain Nε-lauroyl lysine. By constructing a two-phase reaction system, the method ingeniously solves the problem regarding the reaction selectivity of α-amino and ε-amino, obtains a high-purity Nε-lauroyl lysine with good yield, and is mild in terms of reaction conditions, easy in terms of the separation and purification of the product, and suitable for industrial production.

The invention discloses an N-benzylimidazopyridine derivative as well as a preparation method and application thereof. According to the derivative, a structural fragment of lauric acid serving as a catalytic substrate of CYP4Z1 is introduced to N-benzylimidazopyridine, and the length, a connecting chain and an ending group of the introduced fragment are changed, so that the compound disclosed by the invention is prepared; as a CYP450 enzyme inhibitor, the N-benzylimidazopyridine derivative can specifically inhibit CYP4Z1 enzyme, further reduces or inhibits the activity of the CYP4Z1 enzyme in breast cancer cells, achieves the purpose of treating and / or preventing the problems of poor prognosis, invasion and metastasis and the like of breast cancer mediated by the CYP4Z1 enzyme, and has great application prospects in the field of tumor treatment drugs.

The invention relates to a multi-element compound corrosion inhibitor for offshore CO2 oil displacement as well as a preparation method and application of the multi-element compound corrosion inhibitor. The invention relates to a multi-element compound corrosion inhibitor for offshore CO2 oil displacement, which is characterized by comprising 8 to 10 weight percent of oleic acid imidazoline quaternary ammonium salt, 8 to 10 weight percent of oleic acid imidazoline lauric acid amide, 4 to 6 weight percent of potassium iodide, 4 to 6 weight percent of octylphenol polyoxyethylene ether, 4 to 6 weight percent of dodecyl dimethyl tertiary amine, 4 to 6 weight percent of assistant A, 4 to 6 weight percent of assistant B and the balance of absolute ethyl alcohol. According to the multi-element compound corrosion inhibitor for offshore CO2 oil displacement as well as the preparation method and the application of the multi-element compound corrosion inhibitor, the multi-element compound corrosion inhibitor contains a plurality of components and can effectively inhibit CO2 corrosion at a high temperature.

The invention relates to the technical field of coatings, in particular to a photo-thermal hydrophobic coating and application thereof on an asphalt pavement. The photo-thermal hydrophobic coating is prepared from the following raw materials in parts by weight: 1 to 1.5 parts of multiwalled carbon nanotubes, 3 to 4 parts of titanium dioxide, 6 to 7 parts of lauric acid and 100 parts of absolute ethyl alcohol. The anti-icing coating with a rough surface is constructed on the road surface by using the multi-walled carbon nanotubes, titanium dioxide and lauric acid, the anti-icing coating has hydrophobic anti-icing performance and photo-thermal anti-icing performance at the same time, and the effects of inhibiting the formation of road icing and accelerating the thawing of the road icing can be achieved by fully utilizing solar energy. In an extremely low-temperature environment, the coating still can obviously delay the icing of water on the surface of the coating, and has good anti-icing performance; under the condition of weak light, the hydrophobicity of the coating can still play an ice inhibiting role, and all-weather anti-icing and deicing are achieved.

The invention relates to the technical field of coatings, in particular to a bio-based polyurethane waterproof coating and a preparation method thereof. The coating is prepared from organic fluorine-silicon cross-linked castor oil, dibutyltin dilaurate, an HDI tripolymer, polytetrahydrofuran ether glycol, 1, 4-butanediol, a filler, a plasticizer and an ultraviolet light absorber, and the organic fluorine-silicon cross-linked castor oil is obtained by silanization modification of methyl ricinoleate and hydrolysis cross-linking of fluorine-containing silane. The preparation method is simple, and the material has excellent performance, is suitable for the fields of building waterproofing, weather-resistant coatings and the like, and has wide application potential and market value.

The invention discloses durable mildew-proof beauty gel added with a reaction type mildew preventive and a preparation method of the durable mildew-proof beauty gel, and belongs to the technical field of beauty gel, the preparation method comprises the following steps: preparing the reaction type mildew preventive, preparing a composite filler, and mixing; in the step of mixing, alpha, omega-dihydroxy polydimethylsiloxane, fumed silica and simethicone are subjected to high-speed dispersion, the vacuum degree of high-speed dispersion is controlled to be 0.090-0.095 MPa, the rotating speed is controlled to be 900-1000 rpm, after high-speed dispersion is conducted for 40-50 min, methyltrimethoxysilane, a reaction type mildew preventive, composite filler, gamma-aminopropyltriethoxysilane and dibutyltin dilaurate are added, the mixture is stirred to be uniform, the mixture is stirred to be uniform, and the mixture is obtained. Continuously performing high-speed dispersion for 60 to 70 minutes; the durable mildew-proof beauty gel prepared by the invention not only has durable mildew resistance, but also has excellent bonding force, tensile strength, vibration resistance, weather resistance, temperature change resistance, antifouling property and moisture resistance.

The invention discloses an intelligent fabric with a non-iridescent structural color and a temperature adjusting function and a preparation method of the intelligent fabric, and belongs to the technical field of fabric materials. The photon nano pigment is loaded on the matrix fabric, is a hollow silicon dioxide nanosphere with a disordered metasurface and an inner wall carbon layer, and can generate a non-iridescent structural color without being assembled; the phase-change material is lauric acid, and the phase-change material absorbs or releases latent heat through solid-liquid phase change so as to realize temperature regulation; the molten lauric acid after phase change is adsorbed on the surfaces of the hollow silicon dioxide nanospheres and forms hydrogen bond crosslinking with oxygen anions on the surfaces of the hollow silicon dioxide; the water-based acrylic resin is used as an adhesive to fix the photon nano pigment and the phase-change material, and forms hydrogen bond crosslinking with the molten lauric acid to prevent leakage of the phase-change material. The intelligent fabric disclosed by the invention can present a non-iridescent structural color without being assembled, and the temperature can be adjusted by absorbing and releasing heat energy.

The invention relates to the field of sponge materials, and provides a flame-retardant sponge material as well as a preparation method and application thereof. The flame-retardant flame-retardant coating is prepared from the following components: phosphorus-based flame retardant modified oxidized feather-shaped carbon nanotubes, phosphorus-containing diol modified silicon dioxide aerogel, polyurethane, aluminum hydroxide, ammonium tripolyphosphate, toluene diisocyanate, deionized water, cyclopentane, triethanolamine, dibutyltin dilaurate, epoxidized soybean oil, talcum powder, an antioxidant, a light stabilizer, pigment and antimony trioxide. The composite material is prepared from expanded graphite, a silicone oil surfactant, an isothiazolinone antibacterial agent and a phosphorus-based flame retardant modified oxidized feather-shaped carbon nanotube through wet oxidation and dimethyl methylphosphonate modification, and phosphorus-containing diol is prepared from diethyl phosphite, diethanol amine and paraformaldehyde through condensation. The sponge disclosed by the invention has excellent mechanical and flame-retardant properties, and is widely applied to the fields of buildings, home furnishing and transportation.

The preparation process comprises the following steps: mixing a modified monomer, acrylic acid, butyl acrylate, hydroxyethyl acrylate, azodiisobutyronitrile and acetone to react to prepare a functional prepolymer, mixing and stirring the functional prepolymer and the acetone, adding dibutyltin dilaurate and a modifier, reacting, then adding an initiator, and reacting to obtain the high-gloss antibacterial UV veneer. The functional coating is smeared on the surface of the shaving board, and ultraviolet irradiation curing is carried out, the modified monomer is of a hyperbranched structure, when the modified monomer is polymerized with other monomers, polymer molecules are changed into the hyperbranched structure from the original chain structure, and then the strength of a paint film is enhanced; a molecular chain segment contains an organic silicon chain segment, the service life of a surface paint film is prolonged, a quaternary ammonium salt structure of a side chain has positive electricity and can adsorb bacteria, cell membranes are damaged, the antibacterial effect is achieved, meanwhile, the glossiness of the surface of the paint film is improved through nanometer titanium dioxide, and the attractiveness of the veneer is guaranteed.

The invention relates to the technical field of cleaning agents, and particularly discloses a composite cleaning agent as well as a preparation method and application thereof. The composite cleaning agent comprises the following raw material components in percentage by mass: 5%-10% of inorganic particles, 5%-15% of a surfactant, 15%-30% of a cleaning aid and the balance of water, wherein the surface active agent is prepared from rhamnolipid, fatty acid methyl ester ethoxylate, cocamidopropyl betaine and sophorolipid; the inorganic particles comprise soluble sodium salt and nano silicon dioxide; the cleaning auxiliary agent comprises a geranium extracting solution, a herba portulacae extracting solution, lauric acid and glycerol. The composite cleaning agent is simple in raw material components, simple and convenient in preparation method, low in cost and free of secondary pollution to the environment. The composite cleaning agent effectively solves the problems that an existing train cleaning agent is poor in cleaning effect, complex in manufacturing process and unfriendly to the environment.

To prevent the generation of off-flavors in hydrous food and beverages after a heating process.SOLUTION: Oils and fats for hydrous food and beverages that satisfy all of following conditions (1)-(4) are incorporated into oil-in-water emulsion or hydrous food and beverages, thereby preventing the occurrence of off-flavors in hydrous food and beverages following a heating process. (1) The content of medium-chain fatty acids in the constituent fatty acid composition is 1 wt.% or more. (2) The content of lauric acid in the constituent fatty acid composition is 1 wt.% or less. (3) The content of unsaturated fatty acids with a carbon number of 18 in the constituent fatty acid composition is 30 wt.% or more. (4) The content of triglycerides with CN34-CN44 in the total triglycerides is 7 wt.% or more, where "triglycerides with CN34-CN44" denote triglycerides in oils and fats, where the total carbon number of the constituent fatty acids ranges from 34 to 44.SELECTED DRAWING: None