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53results about How to "Act as a solvent" patented technology

Synthesis method for amphoteric ion modified starch for well drilling fluid

The invention provides a synthesis method for amphoteric ion modified starch for a well drilling fluid, wherein the synthesis method comprises the steps: weighing dimethylaminoethyl methacrylate and 1,3-propanesultone with the mass ratio of 2:1 to 9:1, adding 1,3-propanesultone to dimethylaminoethyl methacrylate, after reaction, filtering, extracting, and drying to obtain DMAPS; adding water to starch, stirring to obtain gelatinized starch, introducing N2, carrying out a reaction, and then adding an initiator; and dissolving acrylamide and DMAPS with a solvent, adding into the gelatinized starch after treatment, carrying out a reaction for 4-6 h at the temperature of 60-80 DEG C, to obtain a colloidal solid, cleaning with acetone to obtain a white precipitate, and finally drying and crushing to obtain the amphoteric ion modified starch. The modified starch obtained by the method can resist NaCl saturation and resist high content of CaCl2, has the filtrate loss reduction amount of a polymer decreased along with the increase of the salt content, and besides has the advantages of excellent shale inhibition performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

Preparation method for amphoteric ion modified starch for well drilling fluid

The invention provides a preparation method for amphoteric ion modified starch for a well drilling fluid, wherein the preparation method comprises the steps: weighing N,N-dimethylallylamine and 1,3-propanesultone with the molar ratio of 2:1 to 8:1, carrying out a reaction for 0.5-4 h at the temperature of 10-60 DEG C, filtering, extracting, and drying to obtain N,N-dimethylallyl propanesulfonate; adding water to starch, stirring to obtain gelatinized starch, introducing N2, carrying out a reaction, and then adding an initiator; and dissolving acrylamide and N,N-dimethylallyl propanesulfonate with a solvent, adding into the gelatinized starch after treatment, carrying out a reaction for 4-6 h at the temperature of 60-80 DEG C, to obtain a colloidal solid, cleaning with acetone to obtain a white precipitate, and finally drying and crushing to obtain the amphoteric ion modified starch. The modified starch obtained by the method can resist NaCl saturation and resist high content of CaCl2, has the filtrate loss reduction amount of a polymer decreased along with the increase of the salt content, and besides has the advantages of excellent shale inhibition performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

Liquid-state lipid micro-particles used for delivering cerebric medicine through olfactory pathway, preparation method thereof, and preparation thereof

The invention relates to liquid-state lipid micro-particles used for delivering a cerebric medicine through a nose olfactory pathway, a preparation method thereof, and a preparation thereof. The liquid-state lipid micro-particles at least comprise a medicine, a lipid material, a penetrating agent, hydroxyethyl starch, propylene glycol and water. The mass ratio of the medicine to the lipid material is 1:1 to 1:10. The volume ratio of propylene glycol to water is 2:1 to 1:10. The liquid-state lipid micro-particles are advantaged in large drug load, high deformation capacity, simple preparation method, and high entrapment rate. The micro-particles are beneficial for the medicine to be delivered into the brain through the nose olfactory pathway and to provide curative effects. The range of appropriate medicines of the liquid-state lipid micro-particles is large, and the liquid-state lipid micro-particles are especially suitable for hormone, polypeptide, gene or vaccine medicines. With the liquid-state lipid micro-particles, preparations such as aerosols, nasal drops, and gels can be produced, such that requirements of cerebric disease medication can be satisfied.
Owner:ZHEJIANG HISUN PHARMA CO LTD

Method for preparing iron-based amorphous alloy strip by reducing casting temperature of melt

The invention relates to a method for preparing an iron-based amorphous alloy strip by reducing casting temperature of melt, in particular to a method for preparing an iron-based amorphous alloy stripby reducing casting temperature of Fe-P-C-Si-B series alloy melt. The casting temperature of the melt is reduced by adjusting and controlling the contents of nonmetal elements Si and B in the Fe76PCSi22-XBX alloy melt, and the value of X ranges from 11 to 16. The process is further adjusted, the casting temperature of the Fe76PCSi22-XBX alloy melt can be adjusted and controlled to the lowest casting temperature, and the lowest casting temperature of the method ranges from 1150 DEG C to 1210 DEG C. The density of the iron-based amorphous alloy strip can be improved, the surface quality can beimproved, and the advantages of low implementation cost, high efficiency, high controllability and repeatability, high in technical reliability and the like are achieved.
Owner:江苏中科启航新材料工业研究院有限公司 +3

Preparation method of flaky iron-silicon-aluminum magnetic powder with high magnetic conductivity

The invention belongs to the field of wave-absorbing materials, and discloses a preparation method of flaky iron-silicon-aluminum magnetic powder with high magnetic conductivity. The preparation method comprises the following steps: selecting Fe-Si-Al magnetic powder with the particle size of 80-180 microns as raw material powder, and adding grinding balls, a solvent and magnetic powder into a stirring type ball mill, wherein the solvent is one or a mixed solvent of dimethyl formamide and dimethyl sulfoxide; heating the solvent and magnetic powder to 80 DEG C through a ball mill heating device, and then performing ball milling, keeping the temperature at 80-130 DEG C in the ball milling process, and then drying the magnetic powder obtained after ball milling is dried; and performing particle size grading and annealing treatment. According to the method, a traditional ball milling process is optimized, the radius-thickness ratio and the magnetic conductivity of the high-radius-thickness-ratio sheet-shaped magnetic powder are improved, and meanwhile, the yield of the sheet-shaped magnetic powder is greatly increased.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD

Strongly inhibitory water-based drilling fluid, preparation method therefor and application thereof

The invention provides a strongly inhibitory water-based drilling fluid, a preparation method therefor and application thereof. The drilling fluid comprises water, an amphoteric ionic polymer, anhydrous calcium chloride, a soil phase and a flow pattern modifier, wherein based on the water weight, the amphoteric ionic polymer accounts for 0.5-5 wt%, the anhydrous calcium chloride accounts for 20-70 wt%, the soil phase accounts for 0-6 wt% and the flow pattern modifier accounts for 0.1-0.4 wt%. The invention further provides a synthesis method for the water-based drilling fluid and application thereof. According to the drilling liquid provided by the invention, by virtue of a synergistic effect of the calcium chloride and the amphoteric ionic polymer, the drilling fluid has good rheological performance, filtration control performance, inhibition performance, sealing performance and lubricating performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

Preparation method of bis(fluorosulfonyl)imine alkali metal salt

The invention discloses a preparation method of bis(fluorosulfonyl)imine alkali metal salt. The preparation method takes bis(chlorosulfonyl)imine alkali metal salt (M1ClSI) as a raw material and alkali metal fluoride (M2F) as a fluorinating agent and comprises the following steps: taking the raw material and the fluorinating agent to be subjected to fluorinating reaction in a weak acidic proton solvent; after reaction, extracting an obtained bis(fluorosulfonyl)imine alkali metal salt crude product; filtering, concentrating, crystallizing and drying to obtain a target product bis(fluorosulfonyl)imine alkali metal salt, wherein M1 in the M1ClSI represents an alkaline metal element and M2 in the M2F represents an alkaline metal element; the pKa of the weak acidic proton solvent is 3 to 10. The preparation method provided by the invention has the characteristics of moderate reaction conditions, high product yield, high purity, low raw material cost, simple technology and easiness for realizing industrialized preparation.
Owner:LEE & MAN CHEM CO LTD

Highly efficient water-based drilling fluid and synthesizing method and application therefor

ActiveCN105086961AEnhanced fluid loss control capacityStrong inhibitoryDrilling compositionChemistryDrilling fluid
The present invention provides a highly efficient water-based drilling fluid and a synthesizing method and application therefor. The drilling fluid comprises water, a zwitterion polymer, anhydrous calcium chloride, a soil phase and a flow pattern regulator, wherein, with the weight of the water as a reference, the weight of the zwitterion polymer is 0.5-5% of that of the water, the weight of the anhydrous calcium chloride is 20-70% of that of the water, the weight of the soil phase is 0-6% of that of the water and the weight of the flow pattern regulator is 0.1-0.4% of that of the water. The present invention further provides a synthesizing method and application for the water-based drilling fluid. According to the drilling water provided by the present invention, synergy between the calcium chloride and the zwitterion polymer enables the drilling fluid to have the excellent rheological property, filtration control property and inhibiting property, plugging property and lubricating property.
Owner:CHINA PETROLEUM & CHEM CORP +1

Water base drilling fluid, and preparation method and application thereof

The invention provides a water base drilling fluid, and a preparation method and application thereof. The drilling fluid comprises water, a zwitterionic polymer, anhydrous calcium chloride, a soil phase, and a flow pattern regulator, wherein, based on the weight of water, the usage amount of the zwitterionic polymer is 0.5 to 5 wt% of the usage amount of the water; the usage amount of the anhydrous calcium chloride is 20 to 70 wt% of the usage amount of the water; the usage amount of the soil phase is 0 to 6 wt% of the usage amount of the water; and the usage amount of the flow pattern regulator is 0.1 to 0.4 wt% of the usage amount of the water. The invention also provides a preparation method and application for the water base drilling fluid. According to the invention, through synergistic effects of the calcium chloride and the zwitterionic polymer, the water base drilling fluid in the invention has excellent rheological performance, filtration loss control performance, inhibition performance, sealing performance and lubrication performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

Propionylation catalpol derivative and preparation method and application thereof

The invention discloses a propionylation catalpol derivative, which is prepared by esterifying catalpol and propionic anhydride and also provides a corresponding preparation method and application thereof. According to the propionylation catalpol derivative disclosed by the invention, the propionic anhydride and the catalpol are subjected to esterification reaction to generate an esterification product from the esterification reaction in which all six hydroxyls or 1 to 5 hydroxyls of the catalpol partially participate, and namely, the esterification product is the full-propionylation or partial-propionylation catalpol derivative. The catalpol derivative has good anti-aging activity, blood-brain barrier permeability of the catalpol is improved, and an esterification yield can reach 96.71%;ideas are provided for researching action modes and anti-ageing action mechanisms of the catalpol derivative and target protein, reference is provided for further synthesizing anti-aging medicine withhigher activity and higher bioavailability, and later development of catalpol is facilitated.
Owner:HENAN UNIV OF CHINESE MEDICINE

Preparation method of N,N-dimethylallyl propanesulfonate

The invention discloses a preparation method of N,N-dimethylallyl propanesulfonate, and is characterized in that the preparation method includes the following contents: firstly, respectively weighing N,N-dimethylallylamine and 1,3-propanesultone with the molar ratio of 2:1-8:1, and adding 1,3-propanesultone to N,N-dimethylallylamine; then at the temperature of 10 DEG C-60 DEG C, carrying out a reaction for 0.5-4 h; and finally, filtering, extracting, and drying to obtain N,N-dimethylallyl propanesulfonate. The method has the advantages of no need of use of a solvent, short reaction time and high product yield and is suitable for industrial application.
Owner:CHINA PETROLEUM & CHEM CORP +1

A kind of synthetic method for the zwitterionic copolymer of drilling fluid

The invention provides a synthesis method for an amphoteric ion copolymer for a well drilling fluid, wherein the synthesis method comprises the steps: weighing dimethylaminoethyl methacrylate and 1,3-propanesultone with the mass ratio of 2:1 to 9:1, adding 1,3-propanesultone to dimethylaminoethyl methacrylate, after reaction, filtering, extracting, and drying to obtain DMAPS; adding the obtained DMAPS and AM into a solvent, dissolving, then transferring into a reactor, next introducing N2, carrying out a deoxidization reaction, at the same time, heating up to 50-70 DEG C, then adding an initiator, carrying out a reaction to obtain a colloidal solid, and precipitating with acetone to obtain a white precipitate; and drying the obtained precipitate, and then crushing to finally obtain the amphoteric ion copolymer. The copolymer obtained by the method can sustain a temperature as high as 150 DEG C, resists NaCl saturation, resists CaCl2 saturation, has the filtrate loss reduction amount of a polymer decreased along with the increase of the salt content, and besides has the advantages of excellent shale inhibition performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

Low sodium flavored enhancing peptide salt

The present invention discloses low sodium flavored enhancing peptide salt and relates to the technical field of food safety. The low sodium flavored enhancing peptide salt is prepared from the following components: sodium chloride, Maillard flavored peptides, potassium chloride, guanylic acid, inosinic acid, natural plant oils, a natural spice extract, a freshener and a stabilizer. The Maillard flavored peptides are added as a pure natural product in edible salt, reduce sodium content in the edible salt and also ensure safety of food. The natural vegetable oils have very high nutritional value and oxidation resistance and at the same time have good solubility for the guanylic acid and inosinic acid. The addition of the materials in the edible salt can significantly improve the flavor of the edible salt and also can enhance the nutritional value of the edible salt.
Owner:安徽强旺生物工程有限公司

Preparation method of bromized N,N-diallyl piperidine onium salt cationic monomer

The invention discloses a preparation method of a bromized N,N-diallyl piperidine onium salt cationic monomer. The preparation method comprises the following steps: performing a nucleophilic substitution reaction under an alkaline condition by taking diallyl amine and 1,5-dibromopentane as raw materials to prepare bromized N,N-diallyl piperidine onium salt by one step; subsequently skimming; recycling an oil phase; evaporating and concentrating a water phase; dissolving by using ethanol and then filtering; concentrating the filtrate into a viscous fluid; pouring acetone; crystalizing at a temperature below 5 DEG C; filtering; washing a filter cake by the acetone; and purifying to obtain high-purity bromized N,N-diallyl piperidine onium salt. The preparation method disclosed by the invention is simple in technical route, simple and convenient to operate, high in yield and low in cost; all the used solvents are recyclable; the generated inorganic bromine salt is recycled; few three wastes are generated; and the preparation method is environment-friendly in technological process and easy to industrialize. A product prepared by the method disclosed by the invention can be used as a high-molecular synthesized cationic monomer and can also be used as an organic synthesized midbody.
Owner:HUNAN UNIV OF SCI & TECH

Synthetic method of methacryloxyethyl-N,N-dimethyl propane sulfonate

The invention discloses a synthetic method of methacryloxyethyl-N,N-dimethyl propane sulfonate (DMAPS). The method includes the following steps: first, weighing dimethylaminoethyl methacrylate (DM) and 1,3-propane sultone (PS) in the mass ratio of 2:1-9:1, and adding DM into PS; then reacting at 10-60 DEG C for 0.5-4 h; and at last filtering, extracting and drying to obtain methacryloxyethyl-N,N-dimethyl propane sulfonate. The method has the advantages of no solvent, short reaction time, high product yield, and suitability for industrial application, etc.
Owner:CHINA PETROLEUM & CHEM CORP +1

Synthesis method of m-phenoxytoluene

The invention discloses a synthesis method of m-phenoxytoluene, relating to a synthesis method of a compound. The synthesis method comprises the following steps of: stirring and mixing m-chlorotoluene, sodium phenate, cuprous chloride, 8-oxyquinoline and polydiglycol in a reaction container at the room temperature, heating until the temperature of mixed liquor is 130-140 DEG C and then reacting for 8-9 hours under thermal-insulation stirring; finally, carrying out high-vacuum reduced pressure distillation and getting 100-110 DEG C of distillates to obtain the m-phenoxytoluene. In the invention, under the catalytic action of the cuprous chloride, the 8-oxyquinoline and the polydiglycol, the sodium phenate and the m-chlorotoluene are directly taken as raw materials to carry out single-step reaction to prepare the m-phenoxytoluene, wherein the m-chlorotoluene is a reactant and meanwhile takes the solvent action so that any solvent does not need to be additionally used, thereby greatly reducing cost.
Owner:YANGZHOU UNIV

A kind of high-efficiency water-based drilling fluid and its synthesis method and application

The present invention provides a high-efficiency water-based drilling fluid and its synthesis method and application. The drilling fluid includes water, zwitterionic polymer, anhydrous calcium chloride, soil phase, and a flow regulator. Wherein, the weight of water is Benchmark, the dosage of zwitterionic polymer is 0.5-5wt% of water consumption, the dosage of anhydrous calcium chloride is 20-70wt% of water consumption, the dosage of soil phase is 0-6wt% of water consumption, and the dosage of flow pattern regulator is water 0.1‑0.4wt% of the dosage. The invention also provides a synthesis method and application of water-based drilling fluid. Through the synergistic effect of the calcium chloride and the zwitterionic polymer, the drilling fluid of the invention has excellent rheological properties, fluid loss control performance, inhibition performance, plugging performance and lubricating performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

Preparing method for starch sulphate ammonium salt

The invention relates to a preparing method for starch sulphate ammonium salt.The preparing method specifically comprises the steps that in a kneading machine, a starch sugar unit is put into sulfamic acid at the mole ratio of the starch sugar unit to sulfamic acid being 1:0.5-1:1.5, and a catalyst is put into the mixture at the mole ratio of the starch sugar unit to the catalyst being 1:0.25-1:1.5; the mixture is mixed and heated to 100-150 DEG C, starch is put into the mixture after the mixture is completely melt at the mole ratio of the starch sugar unit to starch being 1:1, a reaction is carried out at a constant temperature until no water vapor is generated in a reaction kettle, and then the mixture is cooled to the room temperature; ammonium hydroxide is used for neutralizing acid remaining in the reaction system to reach the pH of 8-10, ethyl alcohol with the purity of 95% is added to separate precipitate out, centrifugal separation is carried out at the centrifugal speed of 3500-9000 turns / min, drying is carried out at 40-50 DEG C, and a starch sulphate ammonium salt product is obtained.By means of the preparing method, the sulfonation degree of the product is increased, strong degradation on starch and the strong corrosion effect on equipment can be avoided by means of the adopted raw materials, and the preparing method has the advantages that operation is convenient, production cost is reduced while environment pollution is relieved, and the raw material cost and the requirement for equipment are low.
Owner:殷鸽

Thioether oxidation method

The invention discloses a thioether oxidation method. The method comprises oxidizing isopropanol to obtain a liquid mixture containing hydrogen peroxide and acetone. Optionally, after mixing the liquid mixture with an inorganic acid, it is mixed with thioether and titanium The silicon molecular sieve is contacted to oxidize the thioether. The method according to the invention can greatly reduce the amount of solvent used for dispersion in the thioether oxidation reaction device, effectively improve the processing capacity and operating efficiency of the thioether oxidation reaction device, and reduce operating costs. Moreover, the method according to the invention can obtain higher conversion rate of sulfide, effective utilization rate of oxidant and selectivity of target oxidation product. When adopting the method of the present invention to oxidize thioether, a thioether oxidation reaction device can be directly installed at the material outlet end of the existing isopropanol oxidation device, which is easy to implement.
Owner:CHINA PETROLEUM & CHEM CORP +1

Production method of 1-acetyl-2-pyrrolidone

The invention discloses a production method of 1-acetyl-2-pyrrolidone. The method includes the steps of: taking 1, 3-propylene glycol, ammonia water, methyl acetate and methyl formate as the raw materials, carrying out amination, addition and cyclization reactions in a tubular fixed bed reactor under the action of a copper-based catalyst to obtain a 1-acetyl-2-pyrrolidone crude product, and further performing purification to obtain the 1-acetyl-2-pyrrolidone. The method provided by the invention has the characteristics of high catalyst catalytic activity, mild reaction conditions and simple technological operation, and the obtained product has yield of greater than or equal to 98.4%, selectivity of greater than or equal to 99.0%, purity of higher than or equal to 99.9%, a water content ofsmaller than or equal to 40ppm, and an ammonia content of less than or equal to 2ppm, thus meeting the requirements of downstream medicine, fine chemical intermediates and other fields.
Owner:MAIQI CHEM CO LTD

Emulsifiable oily medium oil solvent type alkyd resin and preparation method thereof

The invention discloses an emulsifiable oily medium oil solvent type alkyd resin and a preparation method thereof, and belongs to the field of alkyd resins. The product is prepared from the following components in parts by weight: acrylate modified alkyd resin, polyethylene glycol modified epoxy resin, ethylene glycol butyl ether and deionized water. According to the invention, the medium oil alkyd resin is prepared from castor oil or / and linseed oil. The yield of castor oil and linseed oil is very abundant in China, and the castor oil and linseed oil have certain affinity with the epoxy resin, so that the epoxy resin has a better emulsification effect; in addition, the acrylic acid modified alkyd resin is adopted, the defect of slow drying of the alkyd resin can be overcome by adding the acrylic acid, the alkyd resin is endowed with excellent quick-drying and self-drying performance; besides, the hydroxyl in the acrylic acid and polyethylene glycol have certain affinity, so that the resin has better emulsifying performance.
Owner:山东齐鲁漆业有限公司

Method for preparing betamethasone ketal by homogeneous reaction at normal temperature

The invention provides a novel method for preparing betamethasone ketal by homogeneous reaction at normal temperature, which comprises the steps of: adding reagents of dichloromethane, triethyl orthoformate and boron fluoride etherate in a normal temperature homogeneous system; carrying out condensation reaction through Platts oxides and ethanediol to prepare betamethasone ketal; reacting for 2-15h, condensing filtrate again, extracting semi-condensed materials, and again putting the materials. The product content is not less than 90 percent and the yield is 115-118 percent. Compared with thetraditional process, the method has the advantages of shortening the reaction time, improving the content and the yield of the betamethasone ketal, reducing the environment pollution, discarding the benzene with huge hurt on the human body and the environment, ensuring that the production process is more environmentally friendly, lowering the labor intensity of workers, generating better social benefit, and being more beneficial to the massive industrialized production.
Owner:TIANJIN JINHUI PHARMA

Water-soluble low-modulus acrylic resin adhesive and preparation method thereof

The invention discloses a water-soluble low-modulus acrylic resin adhesive and a preparation method thereof, the glass transition temperature of the water-soluble low-modulus acrylic resin adhesive islower than 0 DEG C, the storage state of the water-soluble low-modulus acrylic resin adhesive is a homogeneous, clear and stable aqueous solution, the pH value of the aqueous solution is 6-8, the solid content is 5%-50%, and the viscosity is 10-200000 cp; the dried water-soluble low-modulus acrylic resin adhesive is a solid; when the temperature is higher than 0 DEG C, the tensile modulus and thebending modulus of the water-soluble low-modulus acrylic resin adhesive are lower than 100MPa; the preparation method comprises the following steps: mixing water-soluble acrylate, water-soluble loweralcohol, an initiator and pure water in a reaction container, and fully stirring to obtain a clear aqueous solution which is a reaction solution; and heating the reaction container to 50-80 DEG C, reacting for 2-8 hours, cooling and collecting a product. Compared with the prior art, the water-soluble low-modulus acrylic resin adhesive is an aqueous solution system, and has the advantages of few small molecule residues, good stability, looser requirements on storage conditions and longer storage life.
Owner:湖南高瑞电源材料有限公司

Organic waste gas adsorbent and preparation method thereof

The invention discloses an organic waste gas adsorbent, which comprises active semi-coke as a carrier and divinylbenzene as a load, wherein the mass of active semi-coke accounts for 88-95% of the total mass of the adsorbent, and the mass of divinylbenzene accounts for 88% to 95% of the total mass of the adsorbent. The percentage of the total mass is 5-12%. The organic waste gas adsorbent loaded with divinylbenzene is obtained by impregnating the coupling agent and divinylbenzene with active semi-coke. The present invention uses activated semi-coke as a carrier, which has sufficient channels and low cost. Divinylbenzene is loaded by layer-by-layer assembly, and divinylbenzene is loaded on the inner and outer surfaces of the active semi-coke channels. Divinylbenzene not only serves as the supply part The strength support of the active semi-coke carrier. In addition, divinylbenzene can not only be used as an adsorption center after being carried on the active semi-coke, but also can act like a solvent to dissolve organic waste gas in the divinylbenzene layer.
Owner:PINGXIANG HUAXING ENVIRONMENTAL PROTECTION ENG TECH CO LTD

A method for preparing flower-shaped aupt alloy nanoparticles in a deep eutectic solvent and its application in electrooxidative synthesis of xanthones

The invention discloses a method for preparing flower-like AuPt alloy nanoparticles in a deep eutectic solvent with simple synthesis process, green reaction system and mild reaction conditions, and electrooxidative synthesis using the prepared flower-like AuPt alloy nanoparticles to modify electrodes. A new method of xanthone, this new electro-organic synthesis method is carried out at room temperature and in an open environment, the reaction conditions are very mild and environmentally friendly, and the yield of synthetic xanthone is high.
Owner:HENAN NORMAL UNIV

A kind of synthetic method of zwitterionic copolymer for drilling fluid

The invention provides a synthesis method for an amphoteric ion copolymer for a well drilling fluid, wherein the synthesis method comprises the steps: respectively weighing N,N-dimethylallylamine and 1,3-propanesultone with the molar ratio of 2:1 to 8:1, adding 1,3-propanesultone to N,N-dimethylallylamine, carrying out a reaction for 0.5-4 h at the temperature of 10-60 DEG C, finally, filtering, extracting, and drying to obtain N,N-dimethylallyl propanesulfonate (DAPS); adding the obtained DAPS and AM into a solvent, dissolving, then transferring into a reactor, then introducing N2, carrying out a deoxygenation reaction, next adding an initiator, carrying out a reaction to obtain a colloidal solid, and precipitating with acetone to obtain a white precipitate; and drying the obtained precipitate, and then crushing to obtain the amphoteric ion copolymer. The copolymer obtained by the method can sustain a temperature as high as 180 DEG C, resists NaCl saturation, resists CaCl2 saturation, has the filtrate loss reduction amount of a polymer decreased along with the increase of the salt content, and besides has the advantages of excellent shale inhibition performance.
Owner:CHINA PETROLEUM & CHEM CORP +1

A kind of preparation method of n,n-dimethylallyl propane sulfonate

The invention discloses a preparation method of N,N-dimethylallyl propanesulfonate, and is characterized in that the preparation method includes the following contents: firstly, respectively weighing N,N-dimethylallylamine and 1,3-propanesultone with the molar ratio of 2:1-8:1, and adding 1,3-propanesultone to N,N-dimethylallylamine; then at the temperature of 10 DEG C-60 DEG C, carrying out a reaction for 0.5-4 h; and finally, filtering, extracting, and drying to obtain N,N-dimethylallyl propanesulfonate. The method has the advantages of no need of use of a solvent, short reaction time and high product yield and is suitable for industrial application.
Owner:CHINA PETROLEUM & CHEM CORP +1

Graphene-based super conductive composite material and preparation method thereof

The invention belongs to the technical field of graphene composite materials, and particularly relates to a graphene-based super conductive composite material which is prepared from the following raw materials in parts by weight: 10-20 parts of graphene, 5-10 parts of polyethylene, 5-10 parts of polystyrene and 1-3 parts of octadecylamine. Graphene and high-density polyethylene are blended in an ethanol solution, and in the blending process, ethanol continuously volatilizes, so that the surfaces of the high-density polyethylene particles are coated with the graphene. Then, the octadecylamine is added to modify the graphene to improve the affinity between the graphene and the polystyrene. Finally, the polystyrene is added, ethanol continuously volatilizes, and the prepared blending system has good conductivity and is easy to process. The graphene, the high-density polyethylene and the polystyrene are all in a powder state and are more suitable for blending, the mass fraction of the ethanol solution is chosen to be 50%-60%, the ethanol solution plays a role of a solvent, meanwhile, the final blending system has few ethanol residues, and the comprehensive performance of the composite material is not affected.
Owner:深圳市华胜超级材料系统工程有限公司

Composite latex of organic silicon resin and acrylic ester polymers, and preparation method thereof

The invention discloses a composite latex of silicone resin and acrylic polymer and a preparation method thereof. The preparation method of the present invention is prepared by hydrolyzing and condensing organosiloxane with quantitative water at a certain temperature under the catalysis of an acid, and using acrylic monomer as a solvent to dissolve and disperse the organosilicon resin, Then, the composite latex is obtained through pre-emulsification and polymerization reaction of an emulsifier. The method of the invention is simple, the conditions are moderate, the synthesis is easy, and the obtained product has good stability and excellent performance.
Owner:LANZHOU JIAOTONG UNIV

Method for preparing fluorine-containing sodium alkyl alcohol

The invention relates to a method for preparing fluorine-containing sodium alkyl alcohol. The method mainly comprises the following steps that: under conditions of an inert gas atmosphere and quick stirring, crushed metal sodium particles are added into an excessive solution of fluorine-containing alkyl alcohol in batch for reaction at a temperature of between 20 portions and 110 DEG C to generate the solution of fluorine-containing alkyl alcohol, which contains sodium alcoholate; and after reaction, the concentration of the solution is detected by the alkalinity measuring method. The method has the advantages that: the excessive solution of fluorine-containing alkyl alcohol can be used as a solvent, so that other solvents are not necessarily added; and the post-treatment procedures of the separation of the added solvent and the solution of fluorine-containing sodium alkyl alcohol are also avoided, so that the production cost is saved.
Owner:山东中氟化工科技有限公司
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