166results about How to "Easy to emulsify" patented technology

An ophthalmologic cutting device having a base support section for attachment with a movement generating device and a tip with a blade section. The blade section preferably has upper and lower edges, and a forward aspiration free edge extending between them, with the upper edge having a shorter longitudinal length compared with the lower edge and where the forward edge slopes down from a distal end of the upper edge to a distal end of the lower edge, and the lower edge presenting a material contact surface that is thinner in thickness than the upper edge. A slope back in the proximal direction of the forward edge of, for example, 10 to 45 degrees with a straight and / or curving forward edge or a combination of a straight and forward edge sections is preferred. Embodiments of the blade include a blade converging in thickness from top to bottom and one having a curved upper forward edge region and one with a lower edge that has a distal straight section and a recessed section positioned proximal of said distal straight section. The forward edge is also preferably defined by longitudinally diverging, opposing side walls.

An ophthalmologic cutting device having a base support section for attachment with a movement generating device and a tip with a blade section. The blade section preferably has upper and lower edges, and a forward aspiration free edge extending between them, with the upper edge having a shorter longitudinal length compared with the lower edge and where the forward edge slopes down from a distal end of the upper edge to a distal end of the lower edge, and the lower edge presenting a material contact surface that is thinner in thickness than the upper edge. A slope back in the proximal direction of the forward edge of, for example, 10 to 45 degrees with a straight and / or curving forward edge or a combination of a straight and forward edge sections is preferred. Embodiments of the blade include a blade converging in thickness from top to bottom and one having a curved upper forward edge region and one with a lower edge that has a distal straight section and a recessed section positioned proximal of said distal straight section. The forward edge is also preferably defined by longitudinally diverging, opposing side walls.

An emulsifier for preparing emusified explosive with long storage time is prepared by the reaction of acylating agent on alkylol amine. Its advantage is high emulsifying performance. Its structural formula is also disclosed.

The invention belongs to the technical field of farm chemicals and discloses development and application of fatty acid methyl ester serving as environment-friendly solvent in pesticide preparations. The fatty acid methyl is adopted for replacing high-toxicity solvents in massive use at present. The fatty acid methyl which serves as the environment-friendly solvent is directly added in production of the pesticide preparations and capable of dissolving and dispersing active ingredients of pesticides, and after the fatty acid methyl ester is combined with other additives, qualified pesticide preparation products can be made by stirring, mixing, shearing or grinding. The fatty acid methyl ester is applicable to all pesticide products such as mineral pesticides, biological pesticides, chemical synthetic pesticides and the like.

The present invention relates generally to hydrolyzable drug-oligomer conjugates, pharmaceutical compositions comprising such conjugates, and to methods for making and using such conjugates and pharmaceutical compositions. For example, a conjugate of insulin, PEG, and oleic acid can be orally administered.

The invention provides cation-modified emulsified asphalt for a bonding layer and a preparation method of the cation-modified emulsified asphalt. The cation-modified emulsified asphalt comprises matrix asphalt, an SBS modifier, an emulsifying agent, water, a PH regulator, an organic stabilizer and an inorganic stabilizer. According to the preparation method of the cation-modified emulsified asphalt, the ratio of the materials and the processing temperature are controlled and the materials are emulsified by using a colloid mill to obtain a finished product by controlling. The prepared emulsified asphalt is low in solid content, excellent in high-low temperature performance, good in elastic recovery, strong in binding performance and good in stability, and softening points and the elastic recovery are both over 70%, which are far higher than the indexes of common emulsified asphalt. By using a special emulsifying agent and a special stabilizer, the modified asphalt can be easily emulsified, and the prepared modified asphalt is high in performance; and compound stabilizers are used, so that the emulsion stability is improved.

The invention discloses a method for preparing a special epoxy modified polyacrylate emulsion for waterborne industrial paints. The method comprises the following steps: preparing materials, performing emulsification treatment and carrying out a polymerization reaction. The preparation of the emulsion comprises the following steps: performing emulsification treatment to prepare an epoxy-monomer pre-emulsion under the stirring condition, and adding an initiator under a certain process conditions so as to react to prepare the epoxy modified polyacrylate emulsion. The emulsion has the average particle size of not more than 100 mu and is high in storage stability, solvent resistance, salt fog resistance and hardness, and the storage time of the emulsion exceeds six months even can exceed one year. When being applied to waterborne glass baking finish, the emulsion can resist 50% ethanol, a condition that an abnormal phenomenon is avoided within 48 hours can be achieved, the hardness can be over 3H, and the salt fog resistance exceeds 650 hours. The method is stable in polymerization, the requirement on the stirring speed is low in the process of performing epoxy-monomer mixing, emulsification and polymerization, and the method is extremely favorable for industrial production.

The invention is an emulsifier adjuvant system for forming a substantially solventless or solvent free emulsifiable pesticidal composition. The emulsifier system comprises from about 25 to about 80% by weight, of surfactants in the emulsifier system, of at least one anionic surfactant having an average HLB value of from about 6 to about 11; and from about 20 to about 75% by weight of surfactants in the emulsifier system of at least one nonionic surfactant having an average HLB value of from about 11 to about 18.The emulsifier and adjuvant system of the invention can form emulsifier concentrates of solventless pesticidal compositions with a concentration of the pesticidal composition up to about 90% by weight.

The invention relates to a beauveryia bassiana pesticide suspoemulsion and a preparation method thereof. The invention is characterized in that the beauveryia bassiana pesticide suspoemulsion includes the following materials in part by weight: 20 to 80 parts of beauveryia bassiana spore powder; 10 to 60 parts of emulsified dispersant; 10 to 30 parts of thickening agent; 10 to 30 parts of suspension stabilizer; 10 to 30 parts of spreader; 10 to 60 parts of sugar; and 1 to 10 parts of peptone. The activity of spores is increased, the variety of chemical aids in use is small, moreover, the suspoemulsion can be easily dissolved in water and degraded so that the environmental pollution can be reduced, the adhesion rate of the spores on the body surfaces of inserts is increased, the infection process of the suspoemulsion is quicker than the infection process of raw powder, the requirement of the formulation production process is low, the method is quite simple, and the application in fields is simple. After being diluted by water, the suspoemulsion is in the form of milky, translucent liquid, emulsification is complete, no sediments exist, the stability is high, and the suspoemulsion does not have foreign odor. The dilution factor is high, the packaging and transportation cost is saved, and the transportation of the pesticide is safe. The invention promotes the popularization and commercialization of bassiana and the development of the rural ecological agriculture in China.

The invention discloses an emulsified SBS (styrene-butadiene-styrene) modified asphalt and a preparation method of the emulsified SBS modified asphalt; the emulsified SBS modified asphalt comprises 55-60 percent of matrix asphalt, 2.5-4 percent of SBS, 0.1-0.5 percent of SBS modified asphalt stabilizer SWD, 1-3 percent of asphalt cationic emulsifier, 40-45 percent of water, calcium chloride equivalent to 0.3-0.8 percent of water quality, thickening agent equivalent to 0.1-0.5 percent of water quality and acid for adjusting the pH value to be from 2 to 4, wherein SBS has a linear structure, the block ratio is 20 / 80-28 / 72, and the molecular weight is 100,000-160,000. The emulsified SBS modified asphalt evaporated residue has good high-temperature performance, the softening point can reach more than 72 DEG C, and the ductility can reach more than 30cm, thereby being the emulsified modified asphalt with high performance and widely applied to the building and maintenance of high-level roads.

The invention relates to wook lubricating oil, a preparation method for the wook lubricating oil, and an application of the wook lubricating oil in improvement of fiber spinning performance. The wook lubricating oil comprises: a high molecular polymer, a softener, an emulsifier, an organic metal salt and an assistant agent, wherein the assistant is prepared through combination of a non-ionic surfactant and an anionic surfactant. The preparation method comprises: carrying out emulsifying and stirring for the raw materials to prepare the wook lubricating oil. The application method for improvement of the fiber spinning performance comprises: applying the wook lubricating oil on ceiba fiber or crystal cotton fiber at a temperature of 20-30 DEG C before the spinning process, then placing the treated ceiba fiber or the treated crystal cotton fiber in a room with constant temperature and constant humidity to carry out balancing for 12-48 hours; then carrying out dispersing and uniformly mixing, followed by carrying out the follow-up spinning process. The wook lubricating oil provided by the present invention has characteristics of easy washing and removal, environmental protection, simple operation of the apply method, energy saving, easy industrial production. In addition, with the wook lubricating oil provided by the present invention, the ceiba fiber or the crystal cotton fiber has better carding performance, bar forming performance and spinning performance; the spinning bottle neck of the fiber in the field of textile is overcome.

The invention discloses a mosquito-repellent perfume and a preparation method thereof, and relates to a perfume. The invention provides a mosquito-repellent perfume having little dosage and long effective mosquito-repellent time, and a preparation method thereof. The mosquito-repellent perfume comprises the following raw materials in percentage by mass: 3 to 5 percent of deet, 3 to 5 percent of emulsifier, 0.2 to 0.5 percent of beta-cyclodextrine, 0.05 to 0.1 percent of methylparaben, 0.2 to 0.5 percent of perfume, 3 to 6 percent of glycerin, 0.7 to 1 percent of sodium chloride, 15 to 20 percent of ethanol and the balance of water. The preparation method comprises the following steps of: adding the water, the ethanol, the deet, the emulsifier and the beta-cyclodextrine into a reaction kettle, and stirring to obtain a mixture A; adding the glycerin and the perfume into the mixture A, and stirring to obtain a mixture B; and adding the methylparaben and the sodium chloride into the mixture B, stirring, standing and defoaming to obtain the mosquito-repellent perfume. The obtained mosquito-repellent perfume is transparent liquid.

The invention discloses an antistatic agent for a polyester elasticizing oiling agent. The antistatic agent comprises the following components in part by weight: 30 to 40 parts of fatty alcohol, 10 to 12 parts of ethylene oxide, 40 to 50 parts of phosphorus pentoxide, 1 to 3 parts of potassium hydroxide and 2 to 5 parts of deionized water. The manufacturing method comprises the follow steps of: firstly, synthesizing the fatty alcohol and the ethylene oxide to obtain fatty alcohol-polyoxyethylene ether; secondly, synthesizing the fatty alcohol-polyoxyethylene ether and the phosphorus pentoxide to obtain fatty alcohol-polyoxyethylene ether organic phosphate; thirdly, synthesizing the fatty alcohol-polyoxyethylene ether organic phosphate and the ethylene oxide to obtain fatty alcohol-polyoxyethylene ether organic phosphate alcohol-polyoxyethylene ester; and fourthly; and fourthly, synthesizing the fatty alcohol-polyoxyethylene ether organic phosphate alcohol-polyoxyethylene ester and the potassium hydroxide to obtain fatty alcohol-polyoxyethylene ether organic phosphate alcohol-polyoxyethylene ester sylvite. The antistatic agent produced by the method has the advantages of high efficiency, low cost, strong frost resistance, easiness in emulsification and capability of meeting series of requirements of post-processing such as elasticizing.

The invention relates to a quality control method for a rhizoma gastrodiae capsule and belongs to the technical field of biomedicine. The quality control method comprises the steps of raw material control, preparation method control, an identification method and a content measurement method. Modern drug production management is integrated in quality control. The quality of drugs and solvents used in production is examined from the source. Product quality control in the production process is established, perfect product quality standards are established, the thin-layer chromatographic detection ratio is higher than national requirements, the gastrodin content is greatly increased, the increase degree reaches 28.3%, and the quality and the therapeutic effect of the drug product are ensured.

The invention relates to N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and a preparation method and application thereof. The preparation method comprises the steps of reacting octamethyl cyclotetrasiloxane and tetramethyl dihydro disiloxane according to the proportion in the presence of an acid catalyst so as to prepare double-terminal hydrogenous silicon oil; carrying out hydrosilylation reaction on the silicon oil and glycidyl allyl ether or allyl polyoxyethylene polyoxypropylene glycidyl ether to obtain epoxy-terminated silicone oil; and finally, carrying out aminolysis ring-opening reaction on the epoxy-terminated silicone oil and N, N-dodecyl tertiary amine to obtain the terminal quaternization modified silicone oil. The silicone oil is used as a textile finishing agent for treating cotton fabrics, so that the cotton fabrics are endowed with an antibacterial property, meanwhile, the softness of the cotton fabrics can be also improved, and the hydrophilia is better at the same time.

The invention discloses a hydrophilic softening finishing agent for a cotton fabric and a preparation method of the hydrophilic softening finishing agent. The hydrophilic softening finishing agent isprepared from, by weight, 53.5-58.5% of octamethyl cyclotetrasiloxane, 1.35-1.5% of tetramethyl dihydro disiloxane, 1.35-1.5% of concentrated sulphuric acid, 2.7-3% of sodium carbonate, 10-15% of allyl polyethylene glycol bisepoxypropyl, 17-26% of isopropanol, 0-0.12% of an isopropanol solution of chloroplatinic acid with the mass fraction of 1%, 2.5-3% of tetramethylenediamine and 1.5-2% of glacial acetic acid. The hydrophilic softening finishing agent prepared by adopting the formula and the method is more easily emulsified, after being subjected to hand feeling finishing, the cotton fabriccan be endowed with the good hydrophilic performance, in addition, the fabric has a soft style and low yellowing performance, and the use requirement is met.

The invention provides a method for preparing a docosahexaenoic acid (DHA) and eicosatetraenoic acid (ARA) emulsion. The method comprises the following steps of: preparing an aqueous phase solution and preparing an oil phase solution. An oil phase is dissolved in an aqueous phase to prepare the emulsion; the process for preparing the emulsion comprises the following steps of: dissolving an emulsifying agent, dissolving an ARA and DHA oiling agent, and mixing the emulsifying agent and the ARA and DHA oiling agent; and the process for emulsifying an interfacial film comprises the following steps of: shearing and emulsifying materials, and homogenizing circularly to obtain the DHA and ARA oiling agent emulsion. Production equipment is simple, and the method is suitable for large-scale and continuous production, is favorable for popularization and application and is suitable for production enterprises of formula milk powder and the like. The method has the advantages that 1, the stability is high; 2, the trophism is high; 3, according to the originality, the method is initiative; and 4, according to the novelty, the emulsion serving as a third formulation is invented.

The invention discloses a preparation method and application of a lignosulfonate cold-recycled asphalt emulsifier. The method comprises the following steps: (1) adding amine to a lignosulfonate solution, wherein the molar mass of the added amine accounts for 0.125%-0.5% of mass of lignosulfonate; (2) heating and dropwise adding aldehyde; then, heating again and reacting to obtain an intermediate lignosulfonate polyethylene polyamine, wherein the molar ratio of the added aldehyde to the added amine in step (1) is (1:1)to (4:1); (3) cooling, adding a lignosulfonate solution which is identical to the solution in the step (1) in concentration and mass, and stirring evenly; and (4) heating, dropwise adding aldehyde to the mixed solution obtained in the step (3), and then carrying out heating reaction to obtain a target product. The fluidity loss caused by a sulfonate radical is compensated by increasing the steric hindrance of the lipophilic group of the lignosulfonate emulsifier; the operable time of the cold-recycled asphalt mixture can be greatly prolonged; and the haul distance of the cold-recycled mixture is prolonged. By adjusting proper preparation conditions, the emulsification effect of the product is ensured while the yield is improved.

Production of micron-solid epoxy-resin micro-pill containing activated group on surface is carried out by mixing Arabic gum with emulsifier accessory and deionized water proportionally, preparing into aqueous-phase system, mixing epoxy resin with activated diluting agent and liquefied imidazole curing agent, preparing into oil-phase system, agitating, pouring oil-phase system into aqueous-phase system, mixing, emulsifying, reacting at 80-85 degree, cooling, filtering and drying to obtain final product containing -OH group. It's simple, cheap, efficient and controllable. It has homogeneous grain size distribution and can be used for chromatographic separation, eigen toughening and biological medicine.

The invention discloses a polyether-type water-based polyurethane emulsion and a preparation method thereof. The method comprises the following steps: 1) in an inert atmosphere, mixing a chain extender with diisocyanurate, and reacting to obtain a mixture I; 2) in an inert atmosphere, mixing the mixture I with polyether glycol and a hydrophilic chain extender, and reacting to obtain a mixture II; 3) mixing the mixture II with hydroxyacrylate, reacting to obtain a polyurethane prepolymer; and 4) neutralizing the polyurethane prepolymer by adding alkali, adding water, emulsifying, and carrying out radiation crosslinking to obtain the polyether-type water-based polyurethane emulsion. The micromolecule diol and diisocyanate are prepolymerized, the chain segment formed by reaction with polyether chain segment has lower phase reversal difficulty than the polyether prepolymer in the emulsifying process, and the emulsion process can be easily completed when the molecular weight is lower. The Co-60-gamma ray is utilized to perform irradiation crosslinking on the emulsion obtained from the polyurethane prepolymer, thereby effectively enhancing the molecular weight of the water-based polyurethane; and thus, the water-based polyurethane emulsion has high solid content and favorable mechanical properties.

The invention provides a converter tapping dephosphorization method of an interstitial free steel. The method comprises steps of: at a converting endpoint, controlling oxygen value and carbon content in steel at 600-900 ppm and 0.030-0.050wt%; plugging a tapping port before tapping, and stopping the slag with slag stopping dart during tapping for no less than 5 min; at the same time, controlling hanging tank temperature according to different tank batches: at 1 / 3 of converter tapping, adding lime, converter slag, fluorite and iron oxide according to a certain amount to realize a rapid dephosphorization reaction. According to the invention, converter tapping dephosphorization rate of the IF steel can reach 30-50%; and pressure in the converter is significantly reduced; and one-time successful rate and the yield of liquid steel are improved. Compared with prior art, the invention has the characteristics of small usage amount of dephosphorization agent, low cost, small tapping temperature drop and little energy consumption.

The invention discloses a water-proof and dehumidifying modified antirust agent for ships. The water-proof and dehumidifying modified antirust agent for the ships comprises the following raw materials: calcium sulfonate, ammoniacal copper quaternary, sodium hexametaphosphate, glutaraldehyde, carbon nanotubes, sodium borohydride, polyvinyl alcohol, sodium sulfonate, zinc phosphate, zinc powder, zinc stearate, magnesium stearate, a silane coupling agent KH-570, aqueous polyurethane, azobisisobutyronitrile, benzotriazole, diammonium hydrogen phosphate, triethanolamine, fatty acid, trimethylolpropane, sodium dialkyl dithiocarbamate, polyisobutylene succinimide, methyl benzoate, polytetrafluoroethylene, octadecyl trimethylammonium chloride, nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, dodecylbenzenesulfonic acid, 1,2-benzisothiazolin-3-one,3-iodo-2-propynylbutyl carbamate, a modifying waterproof agent, a modifying hydrophobic agent and a modifying auxiliary agent. The water-proof and dehumidifying modified antirust agent for the ships is applied to instrument prevention of instruments on the ships, and has excellent water-proof and dehumidifying performance and antirust performance.

The invention relates to an emulsion explosive with high power and strong hardness, which is characterized in that the emulsion explosive is prepared by the steps of crushing ammonium nitrate according to proportion by a crusher, adding the crushed ammonium nitrate and sodium nitrate into a melting tank filled with water according to proportion by a inclined spiral machine, stirring and heating to 115-125DEG C to prepare aqueous solution; stirring and heating semi-refined paraffin, Vaseline, crystallite wax, stearic acid and emulsifier according to proportion to 110-120DEG C to prepare oil phase solution; conveying the aqueous solution and the oil phase solution according to ratio of 94:6 to a emulsifying machine by a screw pump, making the aqueous solution excellently wrapped in the oil phase solution to form a water-in-oil type emulsification matrix, cooling to 43-57DEG C by steel strip, adding a sensitizing agent according to proportion, uniformly mixing, packaging and storing. The invention has advantages of hard state, high explosion power, long storage life, low production cost and high production safety.

The invention discloses a spherical powder material for 3D printing and a preparation method of the spherical powder material. Preparation raw materials of the spherical powder material comprise thermoplastic resin, modified silicone oil and an emulsifier, wherein viscosity of the modified silicone oil is 600-8000 mpa.s, the thermoplastic resin accounts for 1%-40% by mass of the raw materials. Thepreparation method comprises the following steps: S1, the raw materials are mixed in a reactor and ground; S2, the materials are heated to the temperature 10-100 DEG C higher than the resin melting point; S3, cooling, separation and drying are performed, and the powder material is obtained. The invention aims to solve the technical problems that degree of sphericity of powder printed with selective laser sintering is low, flowability cannot meet requirements and resin powder bonds easily in a heating emulsification process.

The invention provides an emulsion type fluorine-containing organosilicone defoaming agent for an oil and aqueous two-phase system and a preparation method thereof, wherein the defoaming agent includes the following components: polyether and acrylate co-modified fluorine-containing silicone oil, silicon paste, silicon resin, an emulsifier, a thickener and water. The defoaming and foam inhibition performance of an aqueous phase and an oil phase are improved by introducing the silicon resin and a fluorine-containing group into the system. When the defoaming agent is used in the aqueous phase system, solubilization of the silicone oil in the aqueous-phase system can be effectively inhibited, the defoaming and foam inhibition performance is improved, and the high-temperature strong alkaline resistance can be improved. When the defoaming agent is used in the oil phase system, the oil resistance of dimethicone can be significantly increased, and the defoaming agent becomes a highly efficientdefoaming agent in raw oil, lubricating oil, organic solvents and other oil-phase systems.

The invention discloses polymer modified emulsified asphalt and a preparation method thereof. The polymer modified emulsified asphalt comprises the following components: 55-65% of polymer modified asphalt and 35-45% of a soap liquid, wherein the polymer modified asphalt is sulfonated polymer modified asphalt and comprises the following components: 80.0-90.0% of matrix asphalt, 2.0-12.0% of a cosolvent, 3.0-8.0% of a high-molecular polymer and 1.0-5.0% of a stabilizer A, and the soap liquid comprises the following components: 90.0-94.0% of water, 3.0-7.0% of an emulsifier, 0.5-2.5% of a stabilizer B and 1.5-2.5% of a pH regulator. The polymer modified emulsified asphalt provided by the invention has excellent storage stability, high dynamic viscosity of evaporation residues, high softeningpoint, good elasticity, good high-temperature rut resistance and low-temperature embrittlement resistance.

The invention relates to a wire drawing fluid, particularly to an efficient scale-inhibition clean water-based wire drawing fluid. The wire drawing fluid comprises the components in parts by weight as follows: 28-30 parts of hydrogenated polyisobutene, 15-18 parts of diisooctyl sebacate, 2-3 parts of guar gum, 5-6 parts of an oxidized polyethlene waxemulsion, 5-7 parts of triethanolamine, 2-3 parts of emulsified silicon oil, 1-2 parts of potassium sodium tartrate, 5-6 parts of cocofatty acid monoethanol amide, 4-6 parts of triethyl phosphate, 4-5 parts of additives and 800-1000 parts of deionized water. Base oil of the wire drawing fluid has the good high-temperature and low-temperature stability, the oxidized polyethlene waxemulsion can form a film on a metal surface easily and evenly to realize a friction coefficient reduction effect, the wire drawing fluid is good in water solubility and easy to clean, the potassium sodium tartrate and metal ions form soluble complexes, accumulation of metal mud scraps is reduced, scale accumulation is prevented, and other additives are combined, so that the wire drawing fluid has the excellent high-temperature lubricating performance and is not prone to scale accumulation, good in low-foaming cleanliness, high in wire drawing efficiency and not prone to wire breakage.

The invention relates to the technical field of health products, and in particular relates to a lucid ganoderma refined powder compound soft capsule and a preparation method thereof. The lucid ganoderma refined powder compound soft capsule comprises 1 to 300 parts of lucid ganoderma refined powder, 1 to 50 parts of lycopene, 1 to 50 parts of grifolan, and 1 to 500 parts of safflower oil. According to the lucid ganoderma refined powder compound soft capsule, the lucid ganoderma refined powder, lycopene, grifolan and safflower oil which are different in molecular structure are used in common and have some same pesticide effects and also have individual outstanding pesticide effects; and after being organically combined in proportion, the four materials complement and promote one another on curative effect and maximize the effects individually. A preparation in form of the soft capsule can cover the discomfort smell of the contents and effectively improve the stability of the lycopene and safflower oil, enables quick and complete intake and absorption of the healthcare components, and give full play to inflammation resistance, pain alleviating, poisonousness reducing, wound repair promoting, immunoregulation, tumor inhibition, resisting to cancer, three highs (high blood pressure, high blood sugar and high blood lipid) and cardiovascular disease, senescence delaying, improvement of liver function, organism balancing and adjusting and other effects.

The invention relates to a cored solder wire solid soldering flux capable of reducing flyoff. The cored solder wire solid soldering flux consists of a compound surfactant, compound organic acid, a compound plasticizer and compound rosin, and is prepared by the following steps of: grinding the balance of the compound rosin into blocks, adding into a reactor, heating, stirring and placing at constant temperature; and adding 1.0 to 3.0 percent of compound surfactant, 1.0 to 4.0 percent of compound organic acid and 1.0 to 3.0 percent of compound plasticizer sequentially, continuing stirring, uniformly pouring into a mold, and molding to obtain a solid soldering flux product. The soldering flux has the advantages that the content of halogen can be controlled to be less than 1,000ppm, and completely accords with a halogen-free standard; the quantity of soldering flux residue and flyoff solder balls in a welding process of a solder wire and the flyoff distance are greatly decreased; softening points are improved; the soldering flux is high in high temperature resistance and high in insulating resistance; an acid value is increased; and the activity is improved.

This invention discloses Streptococcus zooepidemicus (CGMCC No.1988) for reducing petroleum viacosity and increasing petroleum yield, and its application. Streptococcus zooepidemicus is applied by: inoculating in petroleum, and fermenting at 20-60 deg.C for 8-72 h. Streptococcus zooepidemicus can reduce petroleum viacosity from 8000-15000 mPa.s to 50-250mPa.s, increase petroleum acid value by 8-15 times and light component contents, reduce wax and glue contents by 50-95%, improve rheological property of petroleum, reduce interfacial tension between water and oil, increase organic acid contents in fermented petroleum, and increase oil layer pressure and petroleum fluidity. Besides, CO2, biogas and hyaluronic acid are generated during the fermentation process, thus fermented petroleum is easy to emulsify, moisten and disperse. Streptococcus zooepidemicus can be used in oil production, especially microbe-enhanced oil production and petroleum transportation.