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171results about How to "Surfactant" patented technology

Inverse emulsion process of preparing amphoteric polymer

The present invention is inverse emulsion process of preparing amphoteric polymer, and belongs to the field of water soluble polymer synthesizing technology. Amphoteric monomers DMPS and AM are polymerized in reverse emulsion with ternary composite oxidation-reduction initiating system comprising KPS, TMEDA and DMAEMA at normal temperature to obtain high molecular weight amphoteric water soluble polymer. The polymer has high water solubility, obvious í‹reverse electrolyte effectíŒ and good heat resistance and salt tolerance. Its emulsion may be used in oil field production, waste water treatment and other fields, and it may be further prepared into powdered product with wide application in medicine, daily chemical, water treatment, papermaking, oil field production and other fields.
Owner:SHANDONG UNIV

Slippery water for shale gas fracturing and preparation method thereof

The invention provides slippery water for shale gas fracturing. The slippery water is prepared from the ingredients in percentage by weight: 0.08-0.3wt% of an emulsion friction reducer, 0.3-1.0wt% of a clay stabilizer, 0.3-1.0wt% of a discharge aiding agent, 0.5-2.0wt% of potassium chloride, 0.05-1.0wt% of a bactericide and the balance of water. Specifically, the emulsion friction reducer is an anionic polyacrylamide copolymer, is prepared through taking acrylamide as a main body structural unit, adding an ionic structural unit and a functional monomer and copolymerizing, and has the viscosity-averaged relative molecular mass of 6-9 millions and the intrinsic viscosity of 1,600-1,860mL / g. According to the slippery water provided by the invention, the used additives are high in dissolution rate and uniform in dispersion, and during field application, the on-line preparation of the slippery water can be realized by using continuous preparing or in an on-line preparing device, so that the technical requirements of a shale gas reservoir on high-displacement (10-20m<3> / min) and high-liquid-volume (10,000-50,000m<3>) fracturing construction are met.
Owner:CHINA PETROLEUM & CHEM CORP +1

Rapid solidification Al-Ti-B-Sc intermediate alloy refiner and preparation method thereof

The invention provides a rapid solidification Al-Ti-B-Sc intermediate alloy refiner. The refiner is intermediate alloy and comprises, by mass, 3.75%-5% of Ti, 0.75%-1% of B, 0.1%-0.5% of Sc, and the balance Al. The cast structure of the refiner comprises particulate alpha-Al, TiAl3, TiB2, AlB2 and Al3Sc. The aluminum alloy refiner is an Al-Ti-B-Sc multi-element alloy refiner which comprises the rare earth element Sc and is acquired through rapid solidification. When the refiner is added to aluminum alloy, the aluminum alloy can be molten within a short time and can be evenly distributed more easily. When the refiner is applied, melting time can be shortened, and electric energy losses can be reduced.
Owner:HEBEI UNIV OF TECH

Saturated cardanol polyoxyethylene ether and preparation method thereof

The invention relates to saturated cardanol polyoxyethylene ether and a preparation method thereof, which belongs to the technical field of organic synthesis, and the structural formula of the saturated cardanol polyoxyethylene ether is as follows, wherein n=2-30. The preparation method comprises the following steps: performing a hydrogenation reaction of cardanol; performing filtration and distillation, and performing an addition reaction with ethylene oxide; adjusting the pH value, filtering, and performing reduced-pressure distillation; or performing an addition reaction of cardanol and ethylene oxide; adjusting the pH value, filtering, performing a hydrogenation reaction, filtering, and performing reduced-pressure distillation. The preparation method of the invention uses cardanol as a raw material, and prepares cardanol polyoxyethylene ether with different ethylene oxide adduct numbers and saturated side chains; the product does not contain mixed unsaturated double bond structures, has surface activity, and has stable using performance.
Owner:NORTHEASTERN UNIV

Novel composite water treatment material and preparation method thereof

The invention relates to a novel composite water treatment material and a preparation method thereof. The novel composite water treatment material contains tourmaline, sepiolite and graphene oxide or graphene. According to the preparation method, the graphene or the graphene oxide is wrapped on the surfaces of the sepiolite and the tourmaline by a reflux method, so the adsorptive property of the sepiolite on organic wastewater can be effectively improved by utilizing the large surface area of the graphene or the graphene oxide. The novel composite material has the characteristics of high adsorption efficiency, small using amount, energy conservation and the like, in particular, the sepiolite and the tourmaline are almost not consumed, so the treatment cost can be greatly reduced, and the dangerousness that dye molecules belonging to organic matters difficult to degrade are immersed into natural water and accumulated in the environment is avoided. Meanwhile, the graphene oxide and the graphene have good antibacterial property, so the phenomenon that activated sludge is increased too fast can be effectively improved, and considerable economic benefit, environmental benefit and social benefit are achieved.
Owner:HEBEI UNIV OF TECH

A grape preservative and preparation method thereof

The invention provides a grape preservative and a preparation method thereof, which belongs to the fruit preservation field. The mentioned grape preservative includes the following ingredients with parts by weight: 0.5-3 parts of cinnamon essential oil, 0.5-2 parts of zanthoxylum bungeanum volatile oil, 0.5-2 parts of sodium alginate, 6-8 parts of sucrose fatty acid ester, 4-6 parts of polysorbate 80, 1-5 parts of propionic acid, 1-4 parts of calcium chloride, 2-4 parts of vitamin C, 2-4 parts of potassium sorbate, 10-20 parts of chitosan citrate solution and 10-20 parts of water. The preparation method comprises the steps of mixing the sodium alginate, sucrose fatty acid ester, polysorbate 80, propionic acid and water and fully dissolving them; then adding the essential oil to get composite essential oils; adding the composite essential oils into the chitosan citrate solution and blending. After picking of grapes, the diseased fruit and bad fruit are removed, the grapes are soaked in the mentioned preservation liquid for 3- 8 min. After taking out the grapes and draining them, the grapes are stored. The grape preservative mentioned in the invention can greatly reduce or delay decrease of quality and decay during storage process of grapes, which has outstanding grape preservation effect.
Owner:滁州嘉实农业科技有限公司

Preparation method of octenylsuccinate hydroxyethyl bean-dreg cellulose ester

The invention discloses a method for preparing octenylsuccinate hydroxyethyl bean-dreg cellulose ester from hydroxyethyl bean-dreg cellulose and octenyl succinic anhydride, which comprises the following steps: dissolving hydroxyethyl bean-dreg cellulose in a water / ethanol system to form a silt state, carrying out an esterification reaction with octenyl succinic anhydride in an alkaline environment, washing with ethanol, drying and pulverizing to obtain the product. The product is light yellow powder, has the advantages of no peculiar smell and high solubility, and has certain emulsibility and surface activity. The preparation method provided by the invention has the advantages of cheap and easily obtained raw material (bean dregs), and low production cost, is simple and easy to operate, can increase the added value of the bean dregs, and partially solves the problems of waste of resources and environmental pollution caused by waste bean dregs.
Owner:NANCHANG UNIV

Binary system quick-drying thick-layer cement self-leveling mortar

The invention belongs to the technical field of building materials and specifically discloses binary system quick-drying thick-layer cement self-leveling mortar. The binary system quick-drying thick-layer cement self-leveling mortar is mainly composed of the following ingredients (by weight): 25-30% of ordinary Portland cement, 5-8% of sulfoaluminate cement, 1.5-3% of calcium oxide, 2-5% of fine sinking beads and 40-45% of dried river sand of 12-140 meshes, etc. According to the binary system quick-drying thick-layer cement self-leveling mortar, one-time construction thickness reaches 50 mm, existing ground artificial plaster can be directly replaced, construction speed is fast, construction period is greatly shortened, and flatness is high. After construction, the ground can be directly coated with floor paint, and wooden floorboards and PVC boards can be paved or large-sized flat bricks can be directly paved by the use of a glue for tiles by a thin-layer full adhesion method.
Owner:河南一方建材集团有限公司

River-lake silt deep dehydrant and dehydration method

Belonging to the technical field of environmental engineering, the invention discloses a river-lake silt deep dehydrant. The river-lake silt deep dehydrant comprises an organic polymeric flocculant, an inorganic polymeric flocculant and an assistant agent. The organic polymeric flocculant includes: cationic polyacrylamide with a molecular weight of 8-12million and animal glue. The inorganic polymeric flocculant includes: polymeric ferric sulfate and polymeric aluminum sulfate. The assistant agent includes: straw powder, fly ash, quick lime and talcum powder. The river-lake silt deep dehydrant and the dehydration method provided by the invention realize deep and efficient dehydration.
Owner:INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI +1

Self-cleaning polypropylene plastic barrel and preparation method thereof

The invention belongs to the technical field of plastic packaging barrels, in particular to a self-cleaning polypropylene plastic barrel and a preparation method thereof. The polypropylene plastic barrel comprises 100 parts of organic silicon modified polypropylene resin, 2-8 parts of maleic anhydride grafted polypropylene, 1-10 parts of hydrophobic modified micro-nano power, 1-3 parts of paraffinoil and 0.5-3 parts of hydrophobic modifier. The invention also provides a preparation method of the self-cleaning polypropylene plastic barrel. The self-cleaning polypropylene plastic barrel prepared by the invention has the surface self-cleaning property and difficult adhesion property that the prior polypropylene packaging barrel does not have, and also has higher mechanical properties, excellent impact performance and high and low temperature resistance performance.
Owner:TIANJIN RUIJIE PLASTIC PROD

Dasatinib dispersoid, preparation method thereof and application thereof in tablets

The invention belongs to the field of medicinal preparations and in particular relates to a Dasatinib dispersoid, a preparation method thereof and an application thereof in preparation of Dasatinib dispersible tablets. Dasatinib solid dispersoid is prepared by using Dasatinib as an active ingredient and is prepared into tablets of different specifications. The Dasatinib solid dispersible tablets overcome the defects of incomplete release of the medicine and low bioavailability caused by that the dispersible common oral tablets are easy to adhere in the medicine releasing process, so that the bioavailability of the Dasatinib medicine can be further improved and the therapeutic effect of the medicine can be effectively exerted. The preparation process is simple, convenient and practical.
Owner:NANJING SANHOME PHARMACEUTICAL CO LTD

Special animal nutrient for milk cows and preparation method thereof

The invention relates to a special animal nutrient for milk cows and a preparation method thereof. The special animal nutrient for milk cows comprises the following components in percentage by weight: 40-60% of fulvic acid, 0.2-0.5% of taraxacum total flavone and 39.5-59.5% of fenugreek pulp fermented culture. The preparation method comprises the following steps: extracting fulvic acid; preparingfenugreek pulp fermented culture; and evenly mixing 40-60% of fulvic acid, 0.2-0.5% of taraxacum total flavone and 39.5-59.5% of fenugreek pulp fermented culture. The special animal nutrient for milkcows has obvious effects of improving the gastrointestinal function, enhancing the immunity of the organism, lowering the morbidity of mastitis and increasing the milk yield, has the advantages of high safety and convenience as well as stable performance, and is easy to store.
Owner:INNER MONGOLIA SILONG BIOTECH

Tertiary amine oxide with rosinyl three-membered phenanthrene ring structure and preparation method of tertiary amine oxide

The invention discloses a tertiary amine oxide with a rosinyl three-membered phenanthrene ring structure and a preparation method of the tertiary amine oxide. The preparation method comprises the following steps of: (1) dissolving, namely mixing tertiary amine, an alcoholic solution or water and catalysts, heating the mixture to 50-60 DEG C, stirring and dissolving the mixture to obtain an alcoholic solution or an aqueous solution of the tertiary amine; (2) oxidizing reaction, namely mixing the alcoholic solution of the tertiary amine and hydrogen peroxide in a mole ratio of the tertiary amine to the hydrogen peroxide 1:(1-1.5), reacting the mixture for 12-25 hours at 65-80 DEG C, then adding disulfate and excess hydrogen peroxide to the mixture for reacting for 0.5-1 hour; and (3) separating and drying, namely steaming reaction products in a spinning manner, and drying the products in vacuum to obtain the tertiary amine oxide with the rosinyl three-membered phenanthrene ring structure. The tertiary amine oxide disclosed by the invention is high in electrolyte resistance and good in defoaming capability, has a good effect in hard water, and has good wetting and emulsifying performance. The preparation method is simple and practicable and is high in yield.
Owner:GUANGXI UNIV FOR NATITIES

High solid constituent epoxy coating composition

The invention relates to a high solid constituent epoxy coating composition. The mass ratio of A component to B component is 100:20 in parts. 25-33 parts of resin, 50-60 parts of pigment and padding, 1-3 parts of assistants and the balance of organic solvent are contained in 100 parts of the A components by mass. 6-10 parts of polyamide, 3-5 parts of cashew nut oil modified amine, 3-5 parts of chain extender and the balance of solvent are contained in 20 parts of the B components by mass. The content of volatile organic compound (VOC) of the coating composition is less than or equal to 250g / L. The resin in the A component is a compound of epoxy resin E51, or E 55, or F51 and flexible epoxy resin, and the flexible epoxy resin accounts for 33-66%. 25 DEG C viscosity of the polyamide in the B component is less than 20000mPa.S, and the chain extender is nonylphenol polyether amine containing end primary amine. The combined property of the high solid constituent epoxy coating composition is superior to that of the existing high solid constituent epoxy coating and traditional epoxy anti-corrosion coating.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2

Plastic composite lubricating agent and preparation method thereof

The invention belongs to the technical field of plastic auxiliaries and specifically relates to a plastic composite lubricating agent and a preparation method thereof. The plastic composite lubricating agent comprises a spherical or near-spherical inorganic powder kernel with lubricating property and a graft-modified polymer wax housing coated on the outer layer. The preparation method comprises the following process steps of: a) performing graft modification: uniformly mixing polymer wax, grafting monomers, an initiator and metal soap, and then performing modification and granulation througha screw extruder; and b) coating powder: using a coating device to coat spherical or near-spherical inorganic powder with the lubricating property in the graft-modified polymer wax. Through optimal selection and improvement of raw materials, optimization of a process and reasonable compounding of all components, the formed composite lubricating agent has good lubricating property inside and outside a full temperature range during plastic processing, and integrates the effects such as heat stability, compatibilization and the like; and the preparation method is favorable for simplifying the formula and process of the modified plastics, and can improve the processing performance of the plastics and lower the cost.
Owner:广州峰华化工科技有限公司

Metal quaternary ammonium oxyphosphate dispersoid and application of metal quaternary ammonium oxyphosphate dispersoid to exploitation of thickened oil

The invention relates to a metal quaternary ammonium oxyphosphate dispersoid for developing the oil deposit of thickened oil to improve the exploitation rate of crude oil and application of the metal quaternary ammonium oxyphosphate dispersoid to the exploitation of the thickened oil. By the metal quaternary ammonium oxyphosphate dispersoid, the emulsification, catalytic viscosity reduction and dissolution in exothermic reaction of the thickened oil are realized. According to the technical scheme, the metal quaternary ammonium oxyphosphate dispersoid consists of quaternary ammonium cations and metal oxyphosphate anions. A preparation method comprises the following steps of: stirring an aqueous solution of Na2MoO4 or Na2WO4 or NaVO4 and a Na2HPO4 solution, heating, dripping concentrated hydrochloric acid for reacting, and extracting by using diethyl ether to prepare metal oxyphosphate; and adding alkyl trimethyl ammonium chloride, and stirring to prepare the metal quaternary ammonium oxyphosphate dispersoid. The thickened oil is heated to be melted, and metal quaternary ammonium oxyphosphate and hydrogen peroxide are added with stirring or air is introduced or peroxy-isobutane is added to perform reaction for 3 to 8 hours, so that the viscosity reduction of the thickened oil is realized under the condition of catalytic oxidation. The metal quaternary ammonium oxyphosphate has acatalytic effect, so that the thickened oil is subjected to the exothermic catalytic oxidation reaction under the action of an oxidant to reduce the viscosity and improve the exploitation rate.
Owner:SOUTHWEST PETROLEUM UNIV

Method for preparing modified micro particles coated with graphene oxide

The invention relates to a method for preparing modified micro particles coated with graphene oxide, and the method comprises the following steps: (1) dispersing micro particles into absolute ethanol, adding a silane coupling agent, heating for reaction, cooling and separating to obtain coupling-agent-modified micro particles; (2) dispersing graphite oxide into water to obtain a graphene oxide solution; (3) adding dropwise the graphene oxide solution prepared by the step (2) into the coupling-agent-modified micro particles prepared by the step (1) until the solution is transparent and the coupling-agent-modified micro particles are all precipitated, separating and drying to obtain the modified micro particles coated with the graphene oxide. Compared with the prior art, the surface of the micro particles are coated evenly with the graphene oxide by the functional groups on the surface of the graphene oxide, the graphene oxide and the micro particles are uniformly compounded, performances of the micro particles can be effectively improved, and particle and graphene application and the like can be expanded.
Owner:TONGJI UNIV

Amphoteric or cationic polymeric flocculating agent

The invention belongs to the field of environment-friendly materials, relates to an amphoteric or cationic polymeric flocculating agent having efficient phase variation capacity, in particular to a polymeric flocculating agent containing acrylic morpholine alkyl esters or methacrylic morpholine alkyl esters. The flocculating agent is prepared by adopting aqueous solution polymerization, and comprises the following steps: preparing solution by using a certain amount of neutral monomer, cationic monomer (acrylic morpholine alkyl ester monomer or methacrylic morpholine alkyl ester monomer) and anionic monomer, adjusting the pH value of the solution, introducing inert gases into the solution to remove oxygen, then adding other agents such as initiating agent and the like into the solution, stopping introducing the inert gases into the solution and keeping a reaction closed, and adjusting the reaction temperature at the temperature of between 0 and 60 DEG C to carry out polymerization so asto obtain the amphoteric or cationic polymeric flocculating agent.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Method for preparing body cleaning soap with gardenia fragrance

The invention relates to a method for preparing a body cleaning soap with gardenia fragrance. The method comprises the following steps in sequence: weighting 70 parts by weight of sodium hydroxide and 2 parts by weight of potassium hydroxide, and adding 100 parts by weight of water to dissolve to obtain an alkali solution; weighting 300 parts by weight of olive oil, 100 parts by weight of coconut oil and 50 parts by weight of lard, heating to melt, adding the prepared alkali solution, stirring for 25-35 minutes, loading into a mold for natural reaction of 20 days, and demolding to obtain a piece of original soap; grinding the original soap, adding 50 parts by weight of lecithin, 10 parts by weight of nano pearl powder, 2 parts by weight of the sea cucumber polysaccharide, 0.1-0.3 part by weight of saffron extract powder, 5-8 parts by weight of essential oil of gardenia and 100 parts by weight of milk, mixing uniformly, and heating to melt; and loading into a mold for natural reaction of 30 days, and demolding to obtain the product. The trial result shows that body cleaning soap with gardenia fragrance can not cause the skin condition to get worse and has the efficacy of reducing the pimples significantly and lessening or totally removing the slight wart.
Owner:南通灵敦运动用品有限公司

Parallel methyl ester method for fats and oils in high acid value

This invention discloses a method for producing fatty acid methyl ester from high-acid-value grease by parallel methyl esterification. The method solves the problems of large raw material loss, low reaction efficiency, low apparatus utility and large wastewater discharge faced by present methods. The method comprises: (1) extracting high-acid-value grease with methanol; (2) performing parallel methyl esterification and interesterification reactions to obtain crude fatty acid methyl ester; (3) refining crude fatty acid methyl ester. A mixture of fatty acid methyl ester, fatty acid monoglyceride, and fatty acid diglyceride can be added during the interesterification reaction to prevent mass transfer hindrance. The method has such advantages as low raw material loss, high reaction efficiency, and high apparatus utility, and can be used to produce fatty acid methyl ester from restaurant waste oil, food processing waste oil and acidified oil from refinery plants.
Owner:WUHAN POLYTECHNIC UNIVERSITY

Butterfly-shaped SnO2 two-dimensional nanometer material, and preparation method and application thereof

The invention discloses a butterfly-shaped SnO2 two-dimensional nanometer material, and a preparation method and an application thereof. The butterfly-shaped SnO2 two-dimensional nanometer material isprepared by using SnSO4 and SDBS as raw materials through a two-step combined method of a hydrothermal reaction and high-temperature oxidizing annealing. The butterfly-shaped SnO2 two-dimensional nanometer material has a two-dimensional butterfly shape and a structure rich in surface defects, and has the characteristics of gas adsorption, surface activity, oxidation reduction and gas sensitivity.The preparation method comprises the following steps: preparation of a precursor solution, a main reaction, separation of a precursor, and preparation of a nanometer material through high-temperatureoxidizing heat treatment. The application comprises the application of the butterfly-shaped SnO2 two-dimensional nanometer material in preparation of gas sensors. Directed at the problems of complicated preparation procedures, high cost, incapability of realizing large-scale preparation and addition of environmentally-unfriendly, toxic and harmful organic solvents like strong acid and strong alkali in conventional preparation of the two-dimensional SnO2 nanometer material, the invention provides a simple, economical, green and easily-scaled synthetic method.
Owner:YUNNAN UNIV

Hairdressing liquid capable of improving metabolism of skin and delaying senescence and production method of hairdressing liquid capable of improving metabolism of skin and delaying senescence

The invention discloses hairdressing liquid. The hairdressing liquid comprises, by weight, 0.02%-0.04% of palmitoyl tetrapeptide, 0.02%-0.05% of acetyl hexapeptide and 0.05%-0.1% of hexapeptide. The invention further discloses a corresponding production method and a mask produced with the hairdressing liquid. The hairdressing liquid has the effects of improving the metabolism of the skin and delaying the senescence.
Owner:金玲

Steel tube diameter expanding oil composition and uses thereof

ActiveCN103710081ASatisfy the diameter expansion process requirementsQuality improvementShaping toolsWork treatment devicesChemical compositionWastewater
The invention relates to a steel tube diameter expanding oil composition and uses thereof, and mainly solves the problems that chlorinated paraffin extreme-pressure anti-wear reagents and alkylphenol polyoxyethylene ether surfactants used in the prior art have effects on the human body and environment, and after use, the cycle of emulsification wastewater processing by a chemical sedimentation method is long; the steel tube diameter expanding oil composition includes the following components: by weight, a) 10-20 parts of an extreme-pressure anti-wear agent; b) 10-20 parts of a surfactant; c) 5-10 parts of a rust inhibitor; d) 10-15 parts of a thickener; e) 0.05-0.1 part of a defoaming agent; and f) 40-80 parts of biodegradable base oil; and the technical scheme of no containing of chlorinated paraffin in the steel tube diameter expanding oil composition well solves the problems, and can be used in industrial production of the steel tube diameter expanding oil composition.
Owner:CHINA PETROLEUM & CHEM CORP +1

Novel disinfection and slow-release composition containing BCDMH and its preparation method

The new type of slow released bromochloro disinfectant composition has dibromo Hydantoin or bromochloro Hydantoin as main component and polymer and forming agent as supplementary material and is prepared through conventional preparation process. It has the features of excellent control capacity of bactericidal factor release, long term stability, high bactericidal efficiency, broad bactericidal spectrum, high safety and environment friendship. It may be used in sterilizing and killing algae of water treating works, swimming pool, medical sewage treatment, fish pond, etc.
Owner:高旭

Solvent-free epoxy resin as plugging material, and preparation method and application of the solvent-free epoxy resin

The invention discloses a solvent-free epoxy resin as a plugging material and a preparation method and application of the solvent-free epoxy resin. The material is prepared from part A and part B at a ratio of 4:1 to 20:1 by weight, wherein the part A contains the following components by weight: 7.3-13.8% of organic silicon modified epoxy compound, 66.2-70.8% of Pluronic polyol polyether-modified epoxy resin, 15.0-25.0% of a reactive diluent, and 0.2-0.5% of a catalyst A, and part B contains the following components by weight: 99.0-99.7% of modified phenolic amine, 0.2-0.5% of a silicane coupling agent and 0.1-0.5% a catalyst B. According to the invention, reaction between benzyl glycidyl ether and hydroxyl silicone oil is utilized, so that the molecular weight of the reaction product is reduced, the viscosity is reduced, and the surface tension of the product is small for plugging effect. In addition, reaction between Pluronic polyol polyether and epoxy resin is adopted to improve the elasticity of a consolidating body and increase the surface activity of the system for water repelling effect. The solvent-free epoxy resin as the plugging material can be applied to engineering parts with visible water.
Owner:GUANGZHOU CHEM GROUTING CO LTD CAS

Preparation method of reactive gemini quaternary ammonium salt leather bactericide

The invention discloses a preparation method of a reactive gemini quaternary ammonium salt leather bactericide. The preparation method comprises the following three steps: first step, carrying out esterification reaction on bromoacetyl bromide and fatty alcohol to generate bromine acetate; second step, carrying out nucleophilic substitution on trans-1,4-dichloro-2-butene and diethylamine to generate trans-N,N,N',N'-tetraethyl-2-butene-1,4-diamine; and third step, carrying out quaterisation on products obtained from the first two steps to obtain a reactive gemini quaternary ammonium salt. The preparation method is easy to operate, the yield of products is high, the cost of raw materials is low, the practicality is high, and moreover, a method for synthesizing diamine intermediate in the second step provides a new thinking and new method for synthesis of the gemini quaternary ammonium salt. Owing to existing of prepared bactericide molecular structure ester groups, the sterilizing property is improved, and biodegradability can be good. In addition, owing to existing of active groups C=C in the structure, the chemical activity of the gemini quaternary ammonium salt is improved, the gemini quaternary ammonium salt can be further chemically bounded into skin collagen and leather coating resin materials, and the long-lasting sterilizing property can be achieved.
Owner:SICHUAN UNIV

Adsorption inhibitor applying to low permeable oilfield

InactiveCN101362937AInhibition of expansion migrationSmall particle sizeDrilling compositionInorganic saltsClay minerals
The invention relates to an adsorption inhibitor which is applied to low permeability oilfield. According to the mass percentage, the inhibitor comprises 0.5-2% of bis-quaternary ammonium salt, 0.2-1% of single-chain small cation organic polymer, 2-5% of inorganic salt, 0.1-0.3% of chelating agent and residual quantity of water; the adsorption inhibitor restrains the expansion displacement of clay and leads the crystal lattice of expanded clay to release contracted water molecular crystal lattice by the modification through the chemical reaction; the inhibitor has strong adsorption performance, can resist washing, has a certain activity, rapidly reduces the surface tensile force, changes the surface wettability of the rock and clay minerals, and can restrain the adsorption of other matters on the surface of rock minerals, thus improving the stratum seepage capability and achieving the object of pressure reducing and injection increasing.
Owner:DAQING PETROLEUM ADMINISTRATION

Efficient controlled-release organic fertilizer for grapes and preparation method of efficient controlled-release organic fertilizer

The invention discloses an efficient controlled-release organic fertilizer for grapes and a preparation method of the efficient controlled-release organic fertilizer. The efficient controlled-release organic fertilizer comprises the following raw materials in parts by weight: 30-40 parts of calcium magnesium phosphate-coated urea, 20-40 parts of monopotassium phosphate, 25-35 parts of potassium sulfate, 15-20 parts of peanut meal, 10-15 parts of corn straw charcoal powder, 5-8 parts of diatomite, 15-25 parts of bentonite, 1-2 parts of borax, 4-6 parts of modified humic acid, 20-40 parts of animal wastes, 20-30 parts of rape seed cakes, 1-3 parts of ferrous sulfate, 0.5-1 part of manganese sulfate, 1-2 parts of copper sulfate, 1-2 parts of ammonium molybdate and 1-3 parts of polyvinyl alcohol. The invention further discloses the preparation method for the efficient controlled-release organic fertilizer. The efficient controlled-release organic fertilizer is rich in nutrient substance and good in controlled-release effect.
Owner:永州绿而康农业发展股份有限公司
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