85results about How to "Improve emulsion stability" patented technology

The invention discloses a static mixer for oil-water emulsification, and relates to the technical field of oil-water emulsification, the static mixer comprises an oil-water mixing pipe, a dosing pipe is fixed on one side of the top end of the oil-water mixing pipe close to a feed port, support rings are symmetrically fixed in the oil-water mixing pipe, and a DNA-imitated double-helix channel is fixed between the two groups of support rings; the DNA-imitating double-helix channel is fixed between the two groups of supporting rings on the inner side of the oil-water mixing pipe, the shark-imitating placoid scale ribs which are distributed in an array manner are fixed on the inner wall of the DNA-imitating double-helix channel, a unique bionics principle is utilized, an efficient mixing phenomenon in nature is simulated, efficient and uniform mixing of fluid in a steady-state environment is realized, and the oil-water mixing effect is improved. According to the device, fluid can be guided to generate micro vortexes, full contact and collision of oil drops and water drops can be promoted, the emulsification efficiency and stability are remarkably improved, an external power source is not needed, efficient mixing can be achieved by means of energy of the fluid, and the device is compact in overall structure, easy and convenient to install and suitable for various-scale emulsification processes.

The invention relates to the field of food seasonings, and discloses salad dressing containing dietary fibers and a preparation method of the salad dressing. The invention discloses salad dressing containing dietary fibers. The salad dressing is prepared from the following raw materials in parts by weight: 15-25 parts of egg white, 10-20 parts of yolk, 5-10 parts of vegetable oil, 18-24 parts of dietary fibers, 3-5 parts of a thickening agent, 2-4 parts of a sweetening agent, 3-5 parts of a flavoring agent, 0.03-0.06 part of a preservative and 30-40 parts of water. The dietary fiber consists of oat, konjac glucomannan and oligosaccharide in a weight ratio of (22-25): (1-2): (4.5-5.5); the preparation method comprises the following steps: whipping the egg white and the sweetening agent to prepare egg white cream; emulsifying egg yolk and vegetable oil to obtain an emulsion; preparing a mixture from the thickening agent, the flavoring agent, the preservative and the water; and emulsifying the emulsion, the protein cream, the dietary fibers and the mixture. The salad dressing prepared by the invention has relatively good taste and texture and good water-retaining property, and is not easy to layer and precipitate after being stored for a long time.

A preparation method of a compound containing pea protein comprises the following steps: step 1, the pea protein is placed in a ball-milling tank for ball milling, in the ball-milling process, liquid nitrogen is always in an open state, and the temperature is kept between-20 DEG C and-10 DEG C; the ball milling time is 5-50 minutes, so as to obtain the frozen ball-milled modified pea protein; step 2, adding water into dry rice starch to prepare starch milk, then adding water into the frozen ball-milling modified pea protein for dissolving to obtain a frozen ball-milling modified pea protein solution, then adding the frozen ball-milling modified pea protein solution into the starch milk, and stirring at normal temperature to uniformly mix the starch milk and the frozen ball-milling modified pea protein solution to obtain a frozen ball-milling modified pea protein solution; freezing and drying to obtain a pea protein-rice starch compound; or preparing the frozen ball-milled modified pea protein into a frozen ball-milled modified pea protein solution by using a PBS buffer solution, then mixing the frozen ball-milled modified pea protein solution with the blueberry anthocyanin solution, and stirring in a dark place at room temperature to obtain the pea protein-blueberry anthocyanin compound. According to the pea protein-rice starch compound disclosed by the invention, the retrogradation value, the gel hardness, the gelatinization enthalpy value and the short-range orderliness of the rice starch are reduced.

The sunscreen gel with transparent appearance and waterproof and film-forming functions comprises a water-phase component and an oil-phase component, and the water-phase component comprises a humectant, polyol, a water-soluble skin conditioner, a water-soluble sunscreen agent, a water-soluble film-forming agent, a neutralizer, a preservative and deionized water; the oil phase comprises an emollient, an oil-soluble film-forming agent, an oil-soluble sun-screening agent, an emulsifier, an oil-soluble skin conditioner and essence. The preparation method comprises the following steps: step 1, stirring and heating the deionized water, adding the humectant, the polyol, the water-soluble skin conditioner, the water-soluble sun-screening agent and the water-soluble film-forming agent, dispersing and dissolving, and cooling; step 2, mixing a neutralizer and a preservative to obtain a mixture A; step 3, stirring an emollient, an emulsifier, an oil-soluble sun-screening agent, an oil-soluble film-forming agent and an oil-soluble skin conditioner to prepare a mixture B; and 4, starting stirring, pumping the mixture A into the mixture B, homogenizing, and discharging. The transparent sunscreen coating disclosed by the invention has good transparency and a relatively good sunscreen effect.

The present invention discloses a grease-balanced low-turbidity high-compatibility cosmetic composition, comprising: at least one cyclohexane derivative grease; at least one malate; at least one benzoate and at least one alkyl-modified polysiloxane. The beneficial effects of the present invention are: by using cyclohexane ethylhexyl ester as a bridge, the cyclohexane part is compatible with phenyl silicone oil and the ethylhexyl part is compatible with malate, and at the same time, phenyl silicone oil, cyclomethicone oil, malate and the oil secreted by the skin have relatively good compatibility, and finally cyclomethicone oil, phenyl silicone oil, malate and the oil on the surface of the skin form a comprehensive balance system, and the balance system adapts to different base makeup technologies for dry skin, oily skin and mixed skin by changing the amount of each component, and can maintain the excellent initial coating feeling and moisturizing feeling of the formula, and can maintain the excellent use feeling of the formula in the middle and late stages, and the composition enhances the stability of the oil phase, and can improve the emulsification stability when used in the formula.

The present invention discloses a water-based anticorrosive epoxy resin emulsion and a preparation method and application thereof, and belongs to the technical field of water-based coatings. The preparation method provided by the present invention is as follows: a bisphenol A type liquid epoxy resin and a diisocyanate compound are heated to react under the action of a catalyst, and then polyethylene glycol is added to react to obtain a modified epoxy resin emulsifier; the polyethylene glycol is a mixture of PEG4000 and PEG6000; the modified epoxy resin emulsifier and the bisphenol A type liquid epoxy resin are heated and mixed, and then water is added by a phase inversion method to prepare a water-based anticorrosive epoxy resin emulsion. The preparation method of the present invention is simple, does not require special equipment and complex reaction steps, and is suitable for mass production; and the obtained water-based anticorrosive epoxy resin emulsion has good stability, and the metal anticorrosion coating prepared therefrom has strong adhesion, high hardness, excellent impact resistance, good water resistance, and excellent corrosion resistance and corrosion resistance.

The present application relates to the field of colored asphalt, and specifically discloses a colored emulsified asphalt, a preparation method thereof, and colored micro-surfacing. The colored emulsified asphalt includes the following raw materials: light-colored base asphalt; limestone powder; nano titanium dioxide; SBS modifier; cationic emulsifier; polyphosphoric acid; water for asphalt; inorganic pigment. Its preparation method is: preparing modified base asphalt; preparing an emulsifier aqueous solution mixture; mixing to obtain colored emulsified asphalt. The colored emulsified asphalt of the present application can be used for colored micro-surfacing, and the colored micro-surfacing also includes stone, crushed jujube kernels, polytetrafluoroethylene powder, microfibrillated cellulose, and water for micro-surfacing. The colored emulsified asphalt and colored micro-surfacing of the present application have good resistance to low-temperature cracking, and are suitable for road maintenance in cold areas.

The invention provides a bacterial cellulose-based composite nano-emulsion and a preparation method and application thereof, and relates to the technical field of nano-emulsions.The preparation method comprises the steps that S1, Sanzan gum is dissolved in water, a completely hydrated Sanzan gum solution is prepared, and the mass concentration of Sanzan gum in the Sanzan gum solution is 0.1%-0.3%; s2, the bacterial cellulose suspension is added into the Sanzan gum solution, the mass concentration of bacterial cellulose in the final composite suspension reaches 0.1%-0.5%, and the bacterial cellulose is nano bacterial cellulose; and S3, mixing the composite suspension and an oil phase according to a ratio of 9: 1, and homogenizing to obtain the bacterial cellulose-based composite nano-emulsion. The nano-emulsion is high in biological safety, environmentally friendly, degradable, capable of being prepared at low cost, high in emulsion stability and capable of being stored for a long time.

The invention belongs to the technical field of algal polysaccharide extraction, and discloses a modification extraction method of algal asparagus polysaccharide and a method for preparing a lutein coating by using the algal asparagus polysaccharide. The modified extraction method comprises the following steps: extracting gracilaria lemaneiformis powder with a weak base solution, enabling lactide and polysaccharide to be subjected to grafting reaction through a redox initiation system under the assistance of ultrasonic waves, and then separating out a first polysaccharide component with high emulsibility and a second polysaccharide component with high gel property through graded alcohol precipitation. The two obtained functional components are used for coating xanthophyll, specifically, the first polysaccharide component emulsifies a xanthophyll oil phase to form a pre-emulsion, the second polysaccharide component is compounded with gelatin, a composite coacervate is formed on an oil drop interface by adjusting the pH value, and finally drying and curing are conducted. According to the method, two modified polysaccharides with definite functions can be synchronously obtained, the prepared xanthophyll coating is high in encapsulation efficiency, good in storage and processing stability and excellent in water dispersibility, and the problems that xanthophyll is unstable and difficult to apply are effectively solved.

The invention discloses a biological oil spill dispersant and a preparation method and application thereof. The biological oil spill dispersant comprises 10-15% of a first nonionic surfactant, 25-30% of a second biomass surfactant, 15-20% of a solubilizer, 5-10% of an auxiliary agent and 30-40% of a solvent. The preparation method comprises the following steps: uniformly mixing the first nonionic surfactant and the auxiliary agent to obtain a mixture A, mixing the second biomass surfactant, the solubilizer and the solvent to obtain a mixture B, dropwise adding the mixture A into the mixture B, and carrying out chromatography to obtain the biological oil spill dispersant. The prepared oil spill dispersant has high fresh water stability and biodegradation rate, is suitable for fresh water areas such as river channels and lake surfaces or various forms of water vortex environments, has the advantages of no toxicity and harmlessness to fresh water aquatic organisms, environmental protection, high biodegradation rate, mild action conditions and the like, and can be applied and popularized on a large scale.

The present application relates to a kind of high stability water-in-oil PDRN emulsion and its preparation method, belong to the field of biotechnology;The preparation method includes the following steps: (1) PDRN enzymolysis: PDRN is added in DNaseI, supplement metal ion activates enzyme, when fragment enrichment shows <800bp, terminate enzymolysis reaction, obtain crude enzymolysis solution;(2) moderate molecular weight screening: pressurized ultrafiltration crude enzymolysis solution with ultrafiltration membrane, and screen out the target fragment of the permeate of molecular weight in 120-500bp;(3) water phase system optimization: 1,3-propanediol and ubiquinol are added in the permeate;(4) semi-continuous feeding gradient emulsification.The present application is by precise control PDRN molecular weight to take into account stability and solubility, optimize water phase component to realize system viscosity and transparency double standard, cooperate gradient emulsification to guarantee water-in-oil system stability, significantly improve product comprehensive quality and application value, with outstanding technical advantages.

The invention provides a coconut milk product capable of improving emulsion stability and a preparation process of the coconut milk product. The coconut milk product is a mechanism for improving emulsion stability through interaction between coffee polyphenol (CP) and main protein coconut globulin (CG) in coconut milk. Caffeic acid (CA), chlorogenic acid (CHA) and ferulic acid (FA) are selected as CP models. The result shows that the hydrogen bond interaction mainly occurs between the CGs and the CPs (Cl-FAslt; cG-CGlt, CG-CGlt; cG-CHA) is used in the method. CHA containing quinic acid preferentially forms a strong interaction with CG. The interaction changes the lipophilicity of the CG and promotes the formation of a compact and thick interfacial film on an oil-water interface. Furthermore, after storage, centrifugation, pH and salt treatment, the CG-CPs stable emulsion shows good stability, especially CG-CHA. The method can provide a theoretical basis for improving the stability of the coconut milk product.

The invention discloses a colostrum-containing cheese and a preparation method thereof, wherein the colostrum-containing cheese comprises the following raw materials in parts by weight, based on 100 parts by total weight: 64-78 parts of cheese, 10-11.5 parts of trehalose, 1-1.4 parts of oligofructose, 0.5-0.7 parts of sodium citrate, 0.18-0.2 parts of locust bean gum, 0.16-0.19 parts of carrageenan, 0.4-0.45 parts of xanthan gum, 0.02-0.04 parts of nisin, and the rest are made up with colostrum. The present invention achieves the effect of improving the thermal stability of active proteins in cheese and colostrum through the mutual coordination of trehalose, oligofructose, sodium citrate, locust bean gum, carrageenan and xanthan gum, while meeting the requirement that microorganisms meet national standards, a higher active protein content can be maintained, and the taste is dense, mellow and delicious, and the advantages of stable quality during the shelf life.

The invention belongs to the technical field of microorganisms, and particularly discloses a strain of lactobacillus plantarum and application thereof, and the preservation number of the lactobacillus plantarum SN21 is CCTCC (China Center For Type Culture Collection) NO: M20252076. The lactobacillus plantarum SN21 provided by the invention is applied to fermentation of the peanut protein, the antigenicity of the peanut protein can be effectively reduced by optimizing fermentation conditions, and the oxidation resistance of a product is improved; meanwhile, the lactobacillus plantarum SN21 provided by the invention is used for fermenting peanut protein, and the solubility and the emulsifying property of the lactobacillus plantarum SN21 are improved. The strain has a good application prospect in development and utilization of fermented foods, and particularly has a relatively good application value in development of low-sensitivity peanut products and improvement of functional characteristics.

This invention relates to a fat mimic based on micro / nano-sized starch, its preparation method, and its application. The preparation method of the fat mimic includes: S1: providing a potato starch solution with a concentration of 15-20%; S2: adding 35-50 u / g of α-amylase (with an enzyme activity of 10000 u / g) based on the mass of potato starch, and enzymatically hydrolyzing at 85-90℃ for 5-15 min to obtain a potato starch enzymatically hydrolyzed fat mimic with a DE value of 2-3; S3: adjusting the potato starch enzymatically hydrolyzed fat mimic to a concentration of 1-5%, and using dynamic ultra-high pressure microfluidic technology at a pressure of 180-200 MPa for 6-12 cycles of micro-nano-sized potato starch fat mimic to obtain a particle size between 500-700 nm. Compared with enzymatically hydrolyzed fat mimics, the micro-nano-scale potato starch fat mimics prepared in this invention have significantly improved oil retention, emulsification, emulsification stability, sedimentation, and apparent viscosity. This is beneficial for increasing their fat substitution rate in food and developing low-fat or fat-free foods with a more delicate texture and better sensory experience and textural expectations for consumers.

The invention relates to the technical field of surfactants, in particular to a modified starch-based surfactant as well as a preparation method and application thereof, and the preparation method comprises the following steps: step 1, mixing hydrophobic modified starch with a phosphate buffer solution to prepare 8-13wt% of a mixed solution; step 2, adding modified alpha-amylase into the mixed solution in the step 1, heating to 60-70 DEG C, oscillating for 20-30 minutes, deactivating enzyme after the reaction is finished, and concentrating to obtain a modified starch-based surfactant; the modified starch-based surface active agent is a cationic surface active agent; the mass of the modified alpha-amylase is 0.01-0.1% of the mass of the hydrophobic modified starch. The modified starch-based surfactant disclosed by the invention is suitable for the field of water treatment, not only can achieve relatively good emulsification stability, but also has a certain antibacterial effect, the preparation method of the modified starch-based surfactant is efficient, and the problems that the activity of a biological enzyme is low and the biological enzyme is unstable at a high temperature can be avoided.

The invention discloses a preparation method of heat-resistant yolk liquid, relates to improvement of the sterilization temperature and the sterilization time of the yolk liquid, maintenance or improvement of emulsification characteristics and prolonging of the shelf life, and belongs to the technical field of agricultural product processing and storage. The original sterilization condition of the egg yolk liquid is 68 DEG C for 4 minutes, and the sterilization condition of the egg yolk liquid is improved to 76 DEG C for 8 minutes by adopting a low-temperature plasma assisted enzyme and amino acid technology. The thermal denaturation temperature of the egg yolk liquid is effectively improved, the thermal aggregation of the egg yolk liquid is inhibited, and the thermal solidification of the egg yolk liquid is delayed. The problems of pipeline blockage and reduced emulsibility caused by pasteurization heat treatment of the egg yolk liquid in the food industry are solved, and an important technical support is provided for the egg product industry.

The invention provides an aviation aluminum alloy cutting fluid. The cutting fluid comprises the following components in parts by weight: 40-50 parts of base oil, 5-15 parts of an emulsifier, 5-15 parts of an oiliness agent, 2-8 parts of an antirust agent, 20-30 parts of distilled water, 2-8 parts of a base number retention agent, 1-5 parts of a hard water resistant agent, 0.5-2 parts of a corrosion inhibitor, 2-5 parts of a bactericide, 0.1-1 part of a coupling agent and 0.05-0.2 part of a defoaming agent, wherein the hard water resistant agent comprises alcohol ether carboxylic acid. The invention further provides a preparation method of the aviation aluminum alloy cutting fluid. The aviation aluminum alloy cutting fluid prepared from the components meets the machining requirements of cutting, milling, cutting and the like, the aluminum corrosion inhibition performance and the emulsion stability are good, and meanwhile the cutting fluid is good in biological stability and long in service life.

The invention discloses a water-based anticorrosive epoxy resin emulsion as well as a preparation method and application thereof, and belongs to the technical field of water-based paint. The preparation method provided by the invention comprises the following steps: carrying out heating reaction on bisphenol A type liquid epoxy resin and a diisocyanate compound under the action of a catalyst, and then adding polyethylene glycol for reaction to obtain a modified epoxy resin emulsifier; the polyethylene glycol is a mixture of PEG (Polyethylene Glycol) 4000 and PEG 6000; the modified epoxy resin emulsifier and bisphenol A type liquid epoxy resin are heated and mixed uniformly, and then water is added by a phase inversion method to prepare the water-based anticorrosive epoxy resin emulsion. The preparation method is simple, does not need special equipment and complex reaction steps, and is suitable for large-scale preparation; and the obtained water-based anti-corrosion epoxy resin emulsion is good in stability, and a prepared metal anti-corrosion coating is high in adhesive force, high in hardness, excellent in impact resistance, good in water resistance and excellent in corrosion resistance and corrosion resistance.

Provided is an oil-in-water type emulsion cosmetic composition which has a unique moist feel when used, while having excellent emulsion stability and high covering power. An oil-in-water emulsion cosmetic composition containing the following components (a) to (d): (a) pigment particles having an average particle diameter of 200 to 500 nm and having been surface-hydrophobically treated, (b) a water-soluble alkyl-substituted polysaccharide derivative, (c) polyhydroxystearic acid, and (d) an oil component containing a polar oil, in which the pigment particles are dispersed in the oil component, the content of pigment particles is 8.0 mass% to 15 mass%, and the content of a nonionic surfactant having an HLB value of 10 or more is 1.0 mass% or less.

The invention belongs to the technical field of organic synthesis, and discloses a preparation method of alkane diol random polyether. The preparation method comprises the following steps: adding an initiator alkane diol, a main catalyst and a cocatalyst into a reaction kettle, adding ethylene oxide and epoxypropane, controlling the feeding time to be 4-8 hours, controlling the feeding rate of the ethylene oxide to be linearly increased to 40-65 g / 10 min from 10-30 g / 10 min, and controlling the feeding rate of the epoxypropane to be linearly reduced to 10-30 g / 10 min from 40-65 g / 10 min. According to the preparation method provided by the invention, ethylene oxide and propylene oxide are taken as comonomers, and the random copolyether with uniformly distributed molecular chain sequences is prepared in a compound base catalysis system through a special feeding mode. The random copolyether is high in random degree, low in surface tension, high in emulsion stability and narrow in molecular weight distribution; and the preparation method can follow the post-treatment method of the traditional alkali catalysis process, and has the advantages of simple process and low cost.

This invention belongs to the field of microbial technology, specifically relating to a method for preparing and applying a fused Weissella extracellular polysaccharide. The extracellular polysaccharide of this invention is composed of glucose monosaccharide, and the glucose linkages include terminal glucose t-Glc(p), 1→4 linked glucose, 1→4,6 linked glucose, 1→3,6 linked glucose, and 1→2,6 linked glucose, with a relative molar ratio of (8~8.5):(1~1.2):(81~82):(7~7.5):(1~1.2):(0.5~1). It possesses excellent water-holding capacity, oil-holding capacity, emulsifying properties, and emulsion stability, and can be used as a highly efficient moisturizer, emulsifier, emulsion stabilizer, cosmetic additive, pharmaceutical additive, and food additive, showing broad application prospects in the food, cosmetic, and pharmaceutical fields.

The present invention belongs to the technical field of deep processing of peanuts, and specifically relates to a method and application thereof for simultaneously improving the starch hydrolysis rate and protein quality in hot-pressed peanut meal. The specific method is that the peanut meal is pretreated first: water is added after ultrafine grinding, the pH is adjusted to 2, and constant temperature extraction is performed; after extraction, the pH is adjusted to 6, high temperature α-amylase is added, constant temperature oscillation is performed for enzymolysis, the pH is adjusted to 4.2-4.7, the enzyme is inactivated, and centrifugation is performed; protein extraction: water is added to the precipitate after centrifugation, the pH is adjusted to 8-10, and the precipitate is obtained by centrifugation; the precipitate is repeatedly extracted once, the supernatant is combined and the pH value is adjusted, and the precipitate is collected by centrifugation again; it is washed with deionized water, the pH is adjusted to 7.0-7.2, and the peanut meal protein is dried to obtain. The method of the present invention combines pretreatment with enzyme treatment technology; on the one hand, it can improve the degree of starch hydrolysis and increase the content of reducing sugars; on the other hand, the protein purity, emulsification, emulsification stability and the content of amino acids of peanut meal protein are improved; and the added value of the product is greatly improved.

The application discloses a peony seed protein beverage and a preparation method thereof, and belongs to the technical field of plant protein beverage processing. The application first uses seed kernels of a peony variety "Fengdan" (scientific name: Paeonia ostii) as raw materials, soaks the Fengdan seeds in boiling water, then adds beta-cyclodextrin, performs beating, filtration, food additive blending, homogenization, and pasteurization to prepare a peony seed protein beverage. Through the synergistic effect of the above process, the inherent bitterness of the Fengdan seed raw materials in the beverage is effectively eliminated, the stability of the beverage is improved, and the prepared beverage has the advantages of high protein content, low fat content, rich dietary fiber, delicate taste, and at least 365 days of storage under the condition of 4 DEG C, thereby providing an effective way for high-value utilization of peony seed resources.

The invention belongs to the technical field of fabric dyeing and finishing, and particularly relates to a refining agent for improving penetration emulsibility and a preparation method thereof. According to the refining agent disclosed by the invention, on the basis of the prior art, terpilenol, rosin amine and other products which can be prepared by processing natural products are selected as raw materials, and the prepared terpilenol polyoxypropylene polyoxyethylene ether has better wettability and permeability; and the rosin amine group is used as the oleophylic end, so that the refining agent has excellent emulsifying property and stability, and the propylene glycol polyoxyethylene ether fatty acid ester has excellent wettability, compatibilization and permeability, so that the emulsifying stability of the refining agent can be improved. The refining agent prepared through blending and compounding has excellent permeability, emulsibility and dispersion stability, the preparation process is simple, industrial production is easy, impurities in the fabric can be effectively removed, and the treated fabric is good in whiteness, excellent in capillary effect, small in fabric strength loss and free of creases.

The invention discloses a tartary buckwheat protein compound as well as a preparation method and application thereof, and relates to the technical field of preparation of Pickering emulsion stabilizers. The method comprises the following steps: diluting tartary buckwheat protein hydrogel with distilled water, and adjusting the pH value to prepare protein hydrogel; mixing quercetin with an ethanol solution, and adjusting the pH value to prepare a quercetin solution; and mixing the protein hydrogel with a quercetin solution, heating in a water bath, carrying out ultrasonic emulsification, and freeze-drying to obtain the tartary buckwheat protein compound. The invention provides a non-toxic, harmless and pollution-free natural emulsifier and stabilizer, simultaneously prepares a Pickering emulsion capable of loading functional substances and nutritional ingredients, and provides reference for screening research of the natural emulsifier, basic research of tartary buckwheat protein, development of tartary buckwheat products and protection of nutritional ingredients easy to photodecompose and oxidize. The problem that in the prior art, the effect of protein serving as a Pickering emulsion stabilizer is poor is solved.

The invention discloses an emulsion type catalyst for hydrothermal cracking of thickened oil as well as a preparation method and application of the emulsion type catalyst, and belongs to the technical field of oil exploitation and catalysis. The catalyst is prepared by the following method: adding a molybdenum-based catalyst, an emulsifier and emulsion oil into water, and carrying out ultrasonic emulsification to obtain the thick oil hydrothermal cracking emulsion type catalyst. The emulsion type catalyst prepared by the invention is a nano molybdenum catalytic system with high stability, low oil phase proportion, wide pH application range and good salt tolerance, has good dispersity and transmission capacity in an oil-water reaction system, has relatively high catalytic cracking activity on underground thickened oil, and can be used for preparing the underground thickened oil. Therefore, the method has good applicability and good application value in the technical field of oil exploitation.

The invention relates to environment-friendly starch slurry for sizing glass fiber yarns for high-density weaving as well as a preparation method and application of the environment-friendly starch slurry, and belongs to the technical field of textile weaving. The method disclosed by the invention comprises the following steps: preparing specific amphiphilic starch through starch refining, starch acidolysis, hydrophobic modification and functional monomer modification; gelatinizing starch; adding a specific plasticizer, a binder, a wetting agent and an antistatic agent combination into the starch slurry, heating and uniformly mixing, and cooling to obtain the environment-friendly starch slurry for sizing the glass fiber yarns for high-density weaving; according to the environment-friendly starch size for sizing the glass fiber yarn for high-density weaving and the preparation method of the environment-friendly starch size, the starch serves as a main film-forming agent, and the size has appropriate viscosity and surface tension and excellent size stability and is applied to sizing of the glass fiber yarn for high-density weaving; the sizing rate is high, and the processed product has high bundling property, high wear resistance, high elasticity, excellent mechanical property and excellent flexibility.

The water-in-oil emulsion cosmetic of the present invention contains (A) an amphiphilic substance and (B) a hydrophobically treated particulate metal oxide formed by hydrophobicating a monoalkyl phosphate ester. The (A) amphiphilic substance contains one or more epoxide derivatives selected from the group consisting of epoxide derivatives represented by the following general formulas (1) and (2). (In the general formula (1), AO represents an oxoalkylene group with 3 to 4 carbon atoms, EO represents an oxovinyl group, R...) 1 and R 2 Each independently represents a hydrocarbon group or hydrogen atom with 1 to 4 carbon atoms, where m and n are integers satisfying 1 ≤ m ≤ 70 and 1 ≤ n ≤ 70. (In the general formula (2), R 3 R 4 and R 5 Each of the elements is independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A is an alkylene group having 2 to 4 carbon atoms, and p and q are independently integers from 1 to 50. The polymer represented by the general formula (2) has a number-average molecular weight of 10,000 or less and an IOB value of 0.4 to 1.8.

The invention relates to the technical field of oral care treatment, in particular to a preparation method of a gingival protecting composition, and the gingival protecting composition comprises the following raw materials: a saffron crocus extract, ganoderma lucidum spore oil and a ginger extract; the preparation method comprises the steps of obtaining preparation raw materials; respectively extracting to obtain a saffron crocus extract, ganoderma lucidum spore oil and a ginger extract; obtaining the content corresponding to a plurality of characteristic components in each raw material, and determining a key ratio according to the content of each characteristic component; the preparation method comprises the following steps: stirring and mixing the saffron crocus extract, the ganoderma lucidum spore oil and the ginger extract according to a key ratio to obtain a premixed gingiva protecting composition, and standing; determining an emulsion stability characterization value of the gingival protecting composition; and adjusting ultrasonic emulsification stirring parameters based on the emulsification stability characterization value and a preset target stable duration to obtain the emulsified liquid of the homogenized gingival protecting composition. The preparation efficiency of the gingival protecting composition can be improved, and the gingival protecting capability is improved.