37results about How to "Not easy to coalesce" patented technology

The invention discloses a diesel fuel pour-point depressant dispersant and a preparation method thereof. The dispersant comprises the following components by weight percentage: 0-20% of Tween, 0-20% of polyethylene glycol, 0-10% of vinyl alcohol butyl ether, 0-10% of polar nitrogenous compounds and 50-80% of Span-80. The raw materials are weighed and mixed according to the weight percentage, and then the materials are stirred in a stirring tank with the speed of 100rpm for 30 min at the temperature of 50 DEG C, and the dispersant is prepared. In the invention, a new dispersant mixture is prepared by combining and mixing various kinds of dispersants uniformly, and then is used with the pour-point depressant according to a certain proportion, thereby improving the sensitivity of the pour-point depressant and the effect of pour point depression.

The invention discloses a preparation method of a superfine manganese oxide. The preparation method comprises the following steps of: adding organic acid to a manganese salt solution, stirring for uniform mixing, then drying and roasting to obtain the superfine manganese oxide, wherein manganese salt is divalent soluble manganese salt, the concentration of the manganese salt solution is 20-50 percent, the organic acid is organic carboxylic acid with oxidization resistance or ascorbic acid with reducibility, wherein the molar ratio of carboxyl in the organic carboxylic acid to manganese is (1-6): 1, the molar ratio of the ascorbic acid to the manganese is (0.5-3): 1, the stirring temperature is 40-80 DEG C, and a solvent is kept to be evaporated in the range of the stirring temperature; the drying temperature is 100-120 DEG C; and the roasting temperature is 300-600 DEG C, and the roasting time is 2-10h. The preparation method disclosed by the invention has the advantages of simple production process flow and common and easily-obtained raw materials; and the prepared manganese oxide powder has the particle size of between 10nm and 60nm.

The invention relates to a total cross-section inflatable floatation machine, comprising a flotation tank and a foam overflow mechanism arranged at the top of the flotation tank, wherein the tank body of the flotation tank is provided with an ore pulp inlet and an ore pulp outlet, the bottom of the tank body of the flotation tank is provided with a check valve mounting plate, and the shape of the check valve mounting plate is matched with that of the cross section of the bottom of the tank body of the flotation tank, thus the tank body of the flotation tank is divided into a pulp bearing chamber and an air chamber arranged below the pulp bearing chamber, one side of the bottom of the pulp bearing chamber is provided with an ore discharge port, one side of the air chamber is provided with an air inlet, and multiple check valves are uniformly distributed on the check valve mounting plate. The total cross-section inflatable flotation machine provided by the invention has a simple structure and is convenient to maintain, the ore dressing recovery percentage is improved, the energy consumption is reduced, gas is fully utilized, the chemical usage is reduced, the life of a quick-wear part is prolonged, the flotation process stage is shortened, and the equipment cost and investment of capital construction are reduced.

The invention discloses flavone acetylsalicylate solid dispersion. The dispersion is prepared by preparing the flavone acetylsalicylate and a hydrophilic carrier, wherein the weight ratio of the flavone acetylsalicylate and the hydrophilic carrier is between (1:1) and (1:10). The insoluble flavone acetylsalicylate is highly dispersed in the strong hydrophilic carrier, so the invention can not only maintain the highly-dispersed state of insoluble drugs, and but also enables the drugs to have good wettability to be produced to be the preparation capable of improving drug solubility, quickening drug dissolution velocity and improving bioavailability. In addition, the invention also discloses a method for preparing the flavone acetylsalicylate solid dispersion.

The invention discloses a preparation method of modified nano calcium carbonate for PVC automobile primer. The preparation method comprises the steps that calcium chloride powder is added into an alcohol compound, and then water, polyoxyethylene ether, a cellulose derivative and glycerin monostearate are added to prepare calcium chloride microemulsion; sodium carbonate is added into water, and then the alcohol compound and fatty acid saponified liquid are added to prepare calcium carbonate microemulsion; calcium carbonate microemulsion is slowly added into the calcium chloride microemulsion, then a aldehyde compound is added and stirred to be mixed with the liquid, and sediment appears; the sediment is separated by a centrifugal machine, and modified nano calcium carbonate serous fluid isobtained; and the modified nano calcium carbonate serous fluid is dried and smashed, and the surface modified nano calcium carbonate product is obtained. The produced material method is simple and convenient, and has the very good compatibility with PVC. The produced primer has the good thixotropic property, can resist abrasion and chemical corrosion, and has the good stone chip resistance. The primer has the high viscosity when being stored, is easy to spray and level when being coated.

The invention relates to a method for synthesis of nano cerium zirconium solid solution through a microemulsion method. The concrete operation steps of the method are as follows: firstly, a mixed solution of hexadecyl trimethyl ammonium bromide,n-butanol and cyclohexane is prepared, and the mixed solution is divided into two parts evenly for standby; secondly, one part of the mixed solution obtained in the first step is added into a mixed solution of cerium nitrate and zirconium oxynitrate and microemulsion A is prepared; thirdly, the other part of the mixed solution obtained in the first step is added into ammonium hydroxide and microemulsion B is prepared; fourthly, the microemulsion A and the microemulsion B are mixed with violent stirring, and the mixture is subjected to aging for 12h at a room temperature; fifthly, the mixture obtained in the fourth step is filtered, the obtained aged material is washed in deionized water and absolute ethyl alcohol, dried for 2h at a temperature of 110 DEG C, and calcined for 2h at a temperature of 500 DEG C and nano cerium zirconium solid solution is obtained. Operation is simple, steps are simple, cerium zirconium solid solution with a high specific surface area can be obtained in a short time, and the method is suitable for industrial production.

The invention discloses a preparation method of high-emulsion stable soy proteins, belongs to the food processing field, and relates to a method for preparing high-emulsion stable soy proteins through ultrasonic-alkylated modification. The method is as follows: (1) ultrasonic modification: soy proteins are prepared to a soy protein solution with a certain concentration, and are modified by ultrasonic waves; (2) alkylated modification: the soy protein solution of the step (1) is added with benzaldehyde and a freshly prepared NaBH3CN solution for implementing alkylated reaction; (3) dialysis: the soy protein solution of the step (2) is dialyzed at the temperature of 4 DEG C; and (4) drying: the soy protein solution of the step (3) is sprayed and dried to obtain high-emulsion stable soy protein products. The emulsibility of the soy proteins prepared through the physical and chemical compounded modification is 0.894-0.978, and the emulsifying stability thereof can achieve 60.04-63 min; the emulsibility and the emulsifying stability of the soy proteins of the invention are improved for 124-145% and 195-210% compared with that of the non-modified soy proteins; and the preparation method has short production period and low production cost.

The invention relates to a preparation method of a soybean protein isolate emulsifier and belongs to the technical field of emulsifiers. Free amino acids or amino groups of protein molecules are linked with reducing sugar by utilizing covalent bonds to form a sugar-protein polymer, the copolymer can be closely absorbed on an oil-water interface by virtue of the hydrophobic property of protein, anda thick protective film can be formed on droplet surfaces in an emulsion, thereby inhibiting the phenomena of precipitation, flocculation, aggregation and the like among droplets in the emulsion system so as to enable the emulsion system to be stable; furthermore, the copolymer can be well dissolved in the emulsion system by virtue of the hydrophilic property of polysaccharides, so that rheological properties of the emulsion can be controlled; and copolymer molecules can form a reticular space structure in continuous phases, so that phase separation and emulsion layering caused by gravity canbe delayed so as to enable the copolymer emulsion system to be stable.

The invention relates to the field of compound crystal forms, in particular to a preparation method of a prothioconazole I-type crystal form. The preparation method comprises the following steps: dissolving a prothioconazole raw material in a solvent, filtering to obtain filtrate, standing the filtrate and separating out a solid phase, namely the prothioconazole I-type crystal form. According to the technical scheme, the prothioconazole I-type crystal form is prepared through a solvent evaporation method and a cooling method, the method is simple and easy to implement and low in cost, and theprepared product is high in yield and purity, good in stability without coalescence and suitable for being applied to industrial production.

The invention relates to a preparation method of a chlorhexidine-iodine nanometer complex. The prepared chlorhexidine-iodine nanometer complex is prepared from the following components in percentage by weight: 5-35 percent of chlorhexidine, 3-30 percent of iodine, 2-18 percent of potassium iodide, 10-30 percent of surfactant, 5-15 percent of cosurfactant, 25-45 percent of organic solvent and 4-30percent of purified water. The chlorhexidine-iodine nanometer complex prepared by utilizing the preparation method is relatively narrow in particle size distribution and liable to control; nanoparticles with uniform particle size can be relatively easily obtained; and by selecting different surface active molecules to perform wrapping and modification on particles, so that the particles are difficult to perform coalescence, and good stability is achieved. Compared with a product by adding an ordinary chlorhexidine-iodine complex in skin and mucosa disinfection hygienic products, by utilizing the chlorhexidine-iodine nanometer complex, a product is good in stability, small in irritation, strong in disinfection effect and safe and convenient to use and has the broad-spectrum antibacterial performance.

The invention relates to the technical field of pour point depressants and discloses a preparation method of a diesel oil pour point depressant. A polymer is synthesized from acrylic ester, ethylene,benzoic acid and higher alcohols ester, the carbon chain length of the acrylic ester and the carbon chain length of diesel are similar, the intermiscibility is high, the wrapping is relatively good inthe process of crystallization of the diesel, and the development of a wax crystal is hindered, so that the effect of the diesel pour point is reduced, and moreover, the depressant is adsorbed on theactive center of a crystal nucleus of the wax crystal due to a polar group in the higher alcohols ester, so that the surface characteristic of the wax crystal is changed, the growth of the crystal ishindered or the growth habit of the crystal is changed, the dispersion degree of the wax crystal is improved, the wax crystal does not coalesce easily to form a net, the adhesive attraction between the wax crystals is weakened, the polarity of the depressant is improved by ethylene and the benzoic acid, and the pour point depression effect is further improved.

The invention discloses an emulsified asphalt. The emulsified asphalt comprises the following raw materials by weight: 40-60 parts of asphalt, 5-15 parts of dodecyl dimethyl benzyl ammonium chloride, 5-10 parts of fatty methyl ester ethoxylates, 2-8 parts of sodium carboxy methyl cellulose, 5-10 parts of isobutyl acrylate, and 20-43 parts of water. The emulsified asphalt is used for a protective coating of a metal and forms a compact film, and the shielding property of an emulsified asphalt coating on a metal matrix is improved, so that the corrosion resistance property of the emulsified asphalt coating is further improved. A manufacturing method of the emulsified asphalt is simple and convenient, the used raw materials are easy to get, and the environmental pollution is small.

The invention discloses a solvate crystal of a PARP inhibitor, a preparation method, a pharmaceutical composition and application. The disclosed solvate crystal of a compound in a formula I includes an ethyl acetate solvate crystal A, an ethyl formate solvate crystal B, a methyl acetate solvate crystal C and an n-propyl formate solvate crystal D.