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90 results about "Emulsion polymerization" patented technology
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Emulsion polymerization is a type of radical polymerization that usually starts with an emulsion incorporating water, monomer, and surfactant. The most common type of emulsion polymerization is an oil-in-water emulsion, in which droplets of monomer (the oil) are emulsified (with surfactants) in a continuous phase of water. Water-soluble polymers, such as certain polyvinyl alcohols or hydroxyethyl celluloses, can also be used to act as emulsifiers/stabilizers. The name "emulsion polymerization" is a misnomer that arises from a historical misconception. Rather than occurring in emulsion droplets, polymerization takes place in the latex/colloid particles that form spontaneously in the first few minutes of the process. These latex particles are typically 100 nm in size, and are made of many individual polymer chains. The particles are prevented from coagulating with each other because each particle is surrounded by the surfactant ('soap'); the charge on the surfactant repels other particles electrostatically. When water-soluble polymers are used as stabilizers instead of soap, the repulsion between particles arises because these water-soluble polymers form a 'hairy layer' around a particle that repels other particles, because pushing particles together would involve compressing these chains.
Preparation method and application of polystyrene-divinyl benzene composite microspheres
The invention relates to the technical field of high polymer materials, and discloses a preparation method and application of polystyrene-divinyl benzene composite microspheres, and an environment-friendly solvent system, such as a water-based or non-toxic organic solvent, is adopted to replace a traditional organic solvent. The solvent pollution risk can be reduced by using water-phase emulsion polymerization, meanwhile, the recovery and treatment of the solvent are simplified, the surfactant is optimized, the low-toxicity and environment-friendly surfactant is selected for emulsion stabilization, and chemical substances harmful to the environment and the human body are prevented from being used. By optimizing a polymerization process, accurately controlling the crosslinking degree and introducing a green solvent and an environment-friendly surface modification method, the improved polystyrene-divinyl benzene composite microsphere overcomes some defects (such as high cost, non-uniform particle size, difficulty in controlling the crosslinking degree and the like) in the prior art; in addition, the method has wider application potential in a plurality of fields (such as coatings, medicines and catalysis), and has better environmental protection property, health safety and the like.
Owner:JILIN INST OF CHEM TECH
Net shed seedling substrate and preparation method and application thereof
The invention relates to the field of agricultural seedling raising, and discloses a net shed seedling raising substrate and a preparation method and application thereof, the net shed seedling raising substrate comprises a modified peat-attapulgite composite material, perlite, a water-absorbing gel, a complex microbial inoculant and a fertilizer component; the modified peat-attapulgite composite material is prepared by compounding peat and attapulgite in an acid leaching manner by using a hydrochloric acid solution; the water-absorbing gel is prepared by forming a double-layer network structure by using aminated diatomite, an aminated water-absorbing polymer, sodium alginate, an initiator, a cross-linking agent, an accelerator, calcium bentonite and a calcium chloride solution, the aminated diatomite is prepared by modifying by using dopamine, and the aminated water-absorbing polymer is prepared by using polyvinyl alcohol and agar as polymeric monomers. According to the invention, the water-absorbing gel and the modified peat-attapulgite composite material are added into the seedling culture substrate, so that the conductivity can be reduced, the maximum water-holding capacity is improved, and the cultured plant has thick stems and strong seedlings.
Owner:WUCHUAN COUNTY SAIFENG POTATO SEED IND CO LTD
Method for manufacturing fluoroelastomers
The present invention relates to a method for manufacturing fluoroelastomers having iodinated / brominated chain ends, in emulsion polymerization whereas no addition of fluorosurfactants or hydrogenated surfactants is required. The resulting elastomer provides for cured articles having improved c-set and low polydispersity.
Owner:SOLVAY SPECIALTY POLYMERS ITALY SPA +1
Salt-resistant thickening agent and fracturing fluid
The invention relates to a salt-resistant thickening agent and fracturing fluid. The thickening agent is obtained by inverse emulsion polymerization; the inverse emulsion comprises a water phase solution; the water-phase solution is prepared from the following raw material components: methacryloylethyl sulfobetaine, a sulfonic acid group-containing monomer, acrylamide and acrylic acid; wherein the content of the methacryloylethyl sulfobetaine is 4 to 6 parts by weight, the content of the sulfonic acid group-containing monomer is 3 to 5 parts by weight, the content of the acrylamide is 15 to 20 parts by weight, and the content of the acrylic acid is 1 to 3 parts by weight. According to the thickening agent, the tackifying performance of a high-molecular polymer and the salt resistance of a viscoelastic surfactant are combined, a salt-resistant functional group sulfonic acid group and an amphoteric functional group betaine are introduced into molecules of the thickening agent, and the thickening agent obtained through inverse emulsion polymerization has good thickening, salt-resistant and calcium-resistant effects.
Owner:PETROCHINA CO LTD +2
Polymer dispersions for coatings
The present invention relates to aqueous polymer dispersions, which are obtainable by free radical aqueous emulsion polymerization of ethy lenically unsaturated monomers M comprising a) 0.5 to 5.0% by weight, based on the total weight of monomers M, of a combination of a1) at least one monomer Ma1, selected from hydroxy alkyl C2-C6 (meth)acrylates; a2) at least one monomer Ma2, selected from monoethylenically unsaturated monosulfonic acids having 2 to 10 carbon atoms and the salts thereof; b1) 50 to 75,45% by weight, based on the total weight of monomers M, of at least one monomer Mb1, which is selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water of at most 60 g / L at 25°C and 1 bar, and whose homopolymers have a glass transition temperature Tg of at least 50°C; b2) 24 to 49,45% by weight, based on the total weight of monomers M, of at least one monomer Mb2, which is selected from nonionic monoethylenically unsaturated monomers having a solubility in deionized water of at most 60 g / L at 25°C and 1 bar, and whose homopolymers have a glass transition temperature Tg of at most 40°C; c) optionally, 0.05 to 2.0% by weight of at least one crosslinking monomer Me; whereby the aqueous polymer dispersion is substantially free of monoethylenically unsaturated carboxylic acids, and whereby the aqueous emulsion polymerization is carried out optionally in the presence of a chain transfer compound.
Owner:BASF SE
Acrylate emulsion containing zinc ion cross-linking agent and preparation method thereof
The invention discloses an acrylate emulsion containing a zinc ion crosslinking agent and a preparation method of the acrylate emulsion, and alkali-soluble resin containing zinc ions is used as a macromolecular surfactant to prepare a self-crosslinking polyacrylate emulsion. In the emulsion polymerization process, a Zn < 2 + > metal ion cross-linking agent is introduced, so that the problem of demulsification caused by damage of high-valence metal cations in the metal ion cross-linking agent to double electric layers of the anionic acrylic emulsion is solved, the degree of cross-linking of a latex film is remarkably improved, the fineness and the particle size of the emulsion are effectively reduced, and the preparation method is simple and easy to implement. And the latex film is endowed with a certain antibacterial function.
Owner:BEIJING UNIV OF CHEM TECH +1
Method for preparing hydrogenated butadiene-acrylonitrile rubber latex based on water-insoluble rhodium metal catalyst
The invention discloses a method for preparing hydrogenated butadiene-acrylonitrile rubber latex based on a water-insoluble rhodium metal catalyst, which comprises the following steps: emulsifying a surfactant, a reducing agent, the water-insoluble rhodium metal catalyst and a cocatalyst, adding a polymerization initiator, and carrying out polymerization reaction at a polymerization temperature, and adding a terminator, raising the temperature, and carrying out hydrogenation reaction under high-pressure hydrogen to obtain the hydrogenated nitrile rubber latex. According to the method disclosed by the invention, the two processes of NBR emulsion polymerization and NBR latex hydrogenation in the existing HNBR latex preparation method are simplified, and the method has the advantages of short process flow, high efficiency, low energy consumption, greenness and the like. The hydrogenation degree of the hydrogenated rubber latex prepared by the method is 50-100%, the conversion rate is 60-85%, the particle size of the hydrogenated rubber latex is 30-60 nm, nano-particle micelles in the latex are stable in performance, and the nano-micelles are good in size uniformity, small in particle size distribution range and not prone to demulsification.
Owner:SHAN DONG SHUI LU XIN CAI LIAO KE JI YOU XIAN GONG SI
Plasma-resistant perfluoroether rubber and preparation method thereof
The invention discloses a preparation method of plasma-resistant perfluoroether rubber, which comprises the following steps: S1, carrying out ball milling on boron nitride nanosheets and silica sol, uniformly mixing, drying, adding a polyvinyl alcohol aqueous solution, uniformly mixing, granulating and calcining to obtain an intermediate 1; uniformly mixing the intermediate 1 with a silane coupling agent solution, carrying out grafting reaction, carrying out solid-liquid separation, and drying to obtain three-dimensional boron nitride nanosheet particles; s2, uniformly mixing tetrafluoroethylene, perfluoroalkyl vinyl ether, a vulcanization point monomer, an initiator, a chain transfer agent, the three-dimensional boron nitride nanosheet particles, an emulsifier, a pH regulator and water, carrying out an in-situ emulsion polymerization reaction to obtain a perfluoroether emulsion, and then carrying out condensation, washing and drying to obtain perfluoroether raw rubber; and mixing the perfluoroether raw rubber, octavinyl silsesquioxane and a vulcanizing agent, and performing segmented vulcanization to obtain the plasma-resistant perfluoroether rubber. The invention also discloses the plasma-resistant perfluoroether rubber. The composite material has good high temperature resistance and plasma resistance.
Owner:SHANGHAI XIJIA PRECISION TECH CO LTD
Preparation method of polyacrylamide / acrylic acid copolymer emulsion with high acrylic acid content
The invention discloses a preparation method of a high-acrylic-acid-content polyacrylamide / acrylic acid copolymer emulsion for improving the recovery efficiency of a high-temperature and high-salt oil reservoir, and belongs to the technical field of oilfield chemistry and functional polymer materials. According to the method, a reversed-phase microemulsion polymerization system is adopted, a combination of a cationic surfactant hexadecyl trimethyl ammonium bromide and an amphiphilic initiator azodiisobutyronitrile is introduced, an electrostatic enrichment effect is generated at a water core interface, and acrylate anions are selectively adsorbed and locally concentrated, so that the reactivity rate of a monomer is regulated and controlled, and the amphiphilic polymer is prepared. And the grafting proportion of acrylic acid in the copolymer is obviously improved. The method is simple in process and mild in condition, and the obtained emulsion has the advantages of being high in solid content, good in storage stability, fast in dissolution, free of fisheye and the like, is suitable for high-temperature and high-salinity oil reservoir conditions and has good industrial application prospects.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Anionic hydroxyl silicone oil emulsion and method for preparing the same
This invention discloses an anionic hydroxyl silicone oil emulsion and its preparation method, relating to the field of polysiloxane emulsion technology, and belonging to patent classification number C08G77 / 04. The preparation method is as follows: Triethanolamine dodecylbenzenesulfonate salt, tridecyl alcohol polyether, and deionized water are mixed and dissolved, heated, and polydimethylsiloxane alcohol is added under high-speed shearing for homogenization. Water is added and the reaction is maintained at a constant temperature to obtain a basic emulsion. γ-(methacryloyloxy)propyltrimethoxysilane is added dropwise to react and obtain an interface-reinforced emulsion. Acrylamide, N-hydroxymethylacrylamide, etc., are pre-emulsified and then added to the interface-reinforced emulsion with ammonium persulfate under nitrogen protection. Polymerization forms a cross-linked polymer shell. After cooling, tert-butylhydroquinone and disodium ethylenediaminetetraacetate are added to obtain an antioxidant emulsion. Phenoxyethanol and octyl glycol are added to obtain the final emulsion. This method significantly improves the thermal stability of the emulsion through the synergistic effects of composite emulsification, interface reinforcement, shell protection, and antioxidant properties, making it suitable for high-temperature environments.
Owner:GUANGZHOU JIYAO BIOTECHNOLOGY CO LTD
Amino-modified polymers, methods of making and use
The application belongs to the field of petrochemical industry, and particularly relates to an amino-modified polymer, a preparation method and application, more particularly to an amino-modified polymer as a surfactant for use as a crude oil demulsifier in crude oil dehydration. The amino-modified polymer with a snowman-like molecular structure is prepared by seed emulsion polymerization and post-modification, and is composed of a hydrophilic silicon-containing inorganic "head" and an oil-wet amino-modified organic group "body". The average particle size of the amino-modified polymer is 1-2 microns. When the amino-modified polymer is used as a crude oil demulsifier, the dehydration rate of crude oil can reach 80-97% within 90 minutes at 60 DEG C.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
A highly absorbent polymer hollow microsphere and its concrete moisturizing curing film
ActiveCN116217819BSynthetic resin layered productsCeramic shaping apparatusPolymer scienceMicrosphere
The present invention relates to highly water-absorbent hollow polymer microspheres and their concrete moisturizing and curing membranes. The hollow polymer microspheres are formed by photoinitiated Pickering emulsion polymerization. The Pickering emulsion comprises an emulsifier, water, and an oil phase. The emulsifier is a photopolymerizable amphiphilic copolymer particle, and the oil phase comprises a photocurable monomer and a photoinitiator. Under light, the photopolymerizable amphiphilic copolymer particle and the photocurable monomer undergo separate polymerization reactions to form hollow polymer microspheres having a hydrophilic shell. The shell's strong hydrophilicity allows for rapid absorption of large amounts of water and storage in its internal cavity. Compared to conventional water-absorbent resins, the cavity structure within the hollow polymer microspheres of the present invention significantly increases water storage capacity. The concrete moisturizing and curing membrane prepared using the hollow polymer microspheres of the present invention has extremely strong water retention. The internally absorbed water can be released into the concrete through capillary action on the rough surface of the base fabric layer, ensuring the required moisture for the concrete during its curing period.
Owner:SUZHOU CANLON POLYMER NEW MATERIAL TECH CO LTD +1
Highly random addition bypolymers for destabilization of complex emulsions in crude oil blends
PendingUS20250270452A1Dewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceEmulsion
The present invention is related to the use of ethylene alkanoate-alkyl acrylate bipolymers with a high randomness monomers distribution, which are synthesized by semicontinuous emulsion polymerization process, characterized because it is carried out using slow addition rate of the pre-emulsion feeding ({dot over (q)}≤0.009 kg·L−1·min−1), stabilized this last one by alkyl glycol ether type surfactants, at temperatures higher than 75° C. and with solids contents above 25 wt %, which avoids the formation of large sequences (blocks) of a same monomer. This structural characteristic gives the ethylene alkanoate-alkyl acrylate bipolymers a high efficiency as chemical agents for removal of complex water / crude oil emulsions of crude oil blends.
Owner:INST MEXICANO DEL GASOLINEEO
High-stability non-fluorine polymer waterproof and oil-proof agent and preparation method thereof
The invention discloses a high-stability non-fluorine polymer waterproof and oil-proof agent and a preparation method thereof, and belongs to the technical field of functional finishing of textiles. The waterproof and oil-proof agent is prepared by emulsion polymerization of a long-chain acrylate monomer, a cyclic acrylate monomer, alkylene-containing silane, a chlorine-containing monomer, epoxy-vinyl double-modified silicone oil, nanoparticles, a surfactant, a cosolvent, water and an initiator according to a specific proportion. Epoxy groups in the epoxy-vinyl double-modified silicone oil can neutralize acidic substances generated in the polymerization process, and the storage stability of the emulsion is remarkably improved; meanwhile, vinyl participates in copolymerization, epoxy groups enhance the binding force with the fabric, and the fabric is endowed with excellent waterproof, oil-proof and washable properties by cooperating with silane and nano particles. The product provided by the invention does not contain PFAS, is environment-friendly, and solves the technical problems that the existing fluorine-containing finishing agent is limited in environmental protection and the traditional vinyl chloride / vinylidene chloride emulsion is poor in stability.
Owner:DONGGUAN TAIYUE OPTICAL COATING MATERIAL CO LTD
Multifunctional variable viscosity slickwater fracturing fluid additive, its preparation method and application
The application discloses a multifunctional variable-viscosity slick water fracturing fluid additive, a preparation method and application, relates to the slick water fracturing technical field, and solves the technical problem that the multifunctionalization of the fracturing fluid additive is difficult to be realized through simple compounding, wherein the nano anti-swelling agent particles are added into white oil containing a hydrocarbon-fluorocarbon surfactant mixed emulsified system to obtain an oil phase, the water phase is composed of a water-soluble vinyl monomer aqueous solution and an initiator, the fracturing fluid additive is prepared through high-speed shearing emulsification, nitrogen deoxygenation, reverse-phase emulsion polymerization reaction of oxidation and reduction initiation, and demulsification process of reverse-phase surfactant. The application has the anti-swelling performance, and the anti-swelling performance is synergistically provided with the ammonium ion in the water phase; the use amount of the ordinary hydrocarbon surfactant is reduced, the surface interfacial activity is good under the reasonable addition amount, and the gel breaking fluid has a relatively low surface interfacial tension.
Owner:PETROCHINA CO LTD
Highly random addition bypolymers for destabilization of complex emulsions in crude oil blends
ActiveUS12312543B2Dewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceActive agent
The present invention is related to the use of ethylene alkanoate-alkyl acrylate bipolymers with a high randomness monomers distribution, which are synthesized by semicontinuous emulsion polymerization process, characterized because it is carried out using slow addition rate of the pre-emulsion feeding ({dot over (q)}≤0.009 kg·L−1·min−1), stabilized this last one by alkyl glycol ether type surfactants, at temperatures higher than 75° C. and with solids contents above 25 wt %, which avoids the formation of large sequences (blocks) of a same monomer. This structural characteristic gives the ethylene alkanoate-alkyl acrylate bipolymers a high efficiency as chemical agents for removal of complex water / crude oil emulsions of crude oil blends.
Owner:INST MEXICANO DEL GASOLINEEO
Polyimide composition, preparation method therefor, and polyimide film using same
The present invention relates to a polyimide composition, a preparation method therefor, and a polyimide film using same. The polyimide composition of the present invention contains: crosslinked fluorine-based resin particles; and polyamic acid, wherein the crosslinked fluorine-based resin particles include second particles obtained by removing the mesoporous inorganic particles from first particles prepared by emulsion-polymerizing mesoporous inorganic particles, a fluorine-based resin monomer, and a crosslinking agent, thereby obtaining a more porous particle structure than when particles are prepared only through emulsion polymerization.
Owner:LG ELECTRONICS INC +1
Preparation method of polymer-based radiation refrigeration material with porous particle nested structure
The invention provides a preparation method of a polymer-based radiation refrigeration material with a porous particle nested structure, and belongs to the technical field of radiation cooling energy-saving structural materials. The preparation method comprises the following steps: preparing a pre-emulsion from the polymer matrix, the diluent and the emulsifier; the polymer matrix is water-insoluble polymer polydimethylsiloxane and the like; preparing dispersion liquid from nano particles and water; adding the dispersion liquid into the pre-emulsion, and violently stirring to obtain a water-in-oil emulsion; and obtaining the polymer-based radiation refrigeration material by an emulsion template method. The internal structure of the material is composed of three photon scattering interfaces with refractive index gradients, including air / polymers, nanoparticles / polymers and air / nanoparticles, and the solar reflectivity greater than 93.0% and the atmospheric window emissivity greater than 96.0% are achieved. According to the material, the temperature is reduced by 5.0 DEG C at the lowest environment temperature in the daytime, and the maximum radiation cooling power can reach 61.0 W / m < 2 >; the temperature is reduced by 16.0 DEG C at night compared with the lowest environment temperature, and the maximum radiation cooling power can reach 105.5 / W m < 2 >.
Owner:UNIV OF SCI & TECH OF CHINA
Special plastic concrete for circulating fluidized bed boiler and its preparation method
The application provides a special plastic concrete for circulating fluidized bed boilers and a preparation method thereof. In the binder, vinyl siloxane and octadecyl acrylate functional monomers are used to improve the bonding strength, styrene is used to improve the high-temperature resistance of the binder, and a pre-emulsified semi-continuous emulsion polymerization is used to obtain a polyacrylate thermoplastic resin with a core-shell structure as the binder, thereby improving the pressure resistance, heat insulation, high-temperature resistance and durability.
Owner:楚科奇 +1
Water-in-oil emulsion polymer
To provide a water-in-oil emulsion that relates to a water-in-oil emulsion polymer used as a paper-making yield improving agent and a filtration aid, a coagulation processing agent and a sludge dewatering agent for industrial waste water and drainage and night soil sludge, and can improve storage stability by suppressing product separation and condensation and foreign matter compared with a conventional water-in-oil emulsion.SOLUTION: It is possible for a water-in-oil emulsion polymer to improve the storage stability, the water-in-oil emulsion polymer obtained by adjusting the charge on the surface of emulsion particles through the addition of ionic surfactants during the production of water-in-oil emulsion polymers, thereby promoting the repulsion between particles, and thus solve the aforementioned problem.SELECTED DRAWING: None
Owner:HYMO CORPORATION
Preparation method of amphiphilic hybrid silicon-based antifouling coating
The invention provides a preparation method of an amphiphilic hybrid silicon-based antifouling coating, which comprises the following steps: S1, co-hydrolyzing a mixed organic silicon monomer and nano silicon dioxide, and adding a catalyst to carry out condensation polymerization to obtain organic-inorganic hybrid silicon resin; s2, reacting polyethylene glycol with a silane coupling agent containing an isocyanate group to obtain a polyethylene glycol prepolymer; s3, mixing the organic-inorganic hybrid silicon resin obtained in the step S1 with the polyethylene glycol prepolymer obtained in the step S2, and adding an amino silane curing agent for cross-linking reaction to obtain the amphiphilic hybrid silicon-based antifouling coating; the preparation method comprises the following steps: copolymerizing nano silicon dioxide serving as an inorganic phase with methylphenyldimethoxysilane, dimethyldiethoxysilane, KH560 and tetraethoxysilane through a water-dropping fixed emulsion polymerization method to synthesize organic-inorganic hybrid silicon resin, and introducing a polyethylene glycol flexible chain segment, so that the coating is endowed with efficient antifouling capacity while the integrity of the coating is maintained.
Owner:SHANDONG VOSGES XUANWEI NEW MATERIAL TECH CO LTD
Instant ternary copolymer emulsion type fracturing fluid thickening agent and preparation method thereof
The application provides a quick-dissolving ternary copolymer emulsion type fracturing fluid thickening agent and a preparation method, and relates to the field of oil and gas exploitation. N,N,N'-trimethyl-N'-allyl ethylenediamine (TMPEMA) is prepared by reacting chloropropylene with N,N,N'-trimethyl ethylenediamine, and (N,N-dimethyl-N-ethyl-N'-allyl-N'-methyl-N'-ethyl)-ethyldibromide functional monomer is prepared by reacting TMPEMA with bromoethane. A monomer solution is prepared by using acrylamide, sodium p-styrene sulfonate and the functional monomer as an aqueous phase, using an emulsifier and liquid paraffin as an oil phase, slowly adding the aqueous phase into the oil phase, stirring uniformly under N2, and then adding an initiator drop by drop to perform inverse emulsion polymerization, so as to prepare the fracturing fluid thickening agent. The ternary copolymer fracturing fluid thickening agent has excellent viscosity increasing property, quick-dissolving capacity, salt resistance, temperature resistance and shear resistance. The prepared fracturing fluid has good viscoelasticity, gel breaking property, sand carrying property, filtration loss reducing property and the like, can be used as slick water at a low concentration and can be used as a sand carrying liquid at a high concentration, and has a good application prospect in offshore and shale oil and gas development.
Owner:SOUTHWEST PETROLEUM UNIV
Composite waterproof locking agent and application thereof in drilling fluid
The invention belongs to the technical field of compositions for treating wells, and particularly relates to a composite waterproof locking agent and application thereof in drilling fluid. The composite waterproof locking agent is formed by compounding a surfactant emulsion and nano polyester particles, wherein the surfactant emulsion is obtained by carrying out core-shell emulsion polymerization on a soft monomer, a hard monomer, a carboxyl-containing functional monomer, a second functional monomer and a fluorine-containing monomer in an emulsifier solution. The hard monomer improves the structural strength of a polymer molecular chain, the soft monomer improves the adhesive force of the polymer molecular chain, a carboxyl hydrophilic group of the carboxyl-containing functional monomer enables the molecular chain to be adsorbed to the surface of tight reservoir rock, and an outward hydrophobic group of the fluorine-containing monomer changes the wettability of the rock. Through the synergistic effect of compounding of the surfactant emulsion and the nano-polyester particles, wetting reversal of the rock surface is realized, so that the capillary resistance is improved, and the nano-particles can block micro-nano pores, reduce the filter loss of the drilling fluid and effectively inhibit water blocking damage.
Owner:CHINA PETROCHEMICAL CORP +2
High weatherability fluorine-containing acrylic composite coating and preparation method thereof
ActiveCN120818275BAntifouling/underwater paintsPaints with biocidesPolymer scienceGlycidyl methacrylate
The application relates to the field of fluorine-containing coatings and discloses a high-weather-resistance fluorine-containing acrylic composite coating and a preparation method thereof. The high-weather-resistance fluorine-containing acrylic composite coating is prepared by emulsion polymerization of 2-difluoromethyl-acrylic acid ethyl ester (DFMAET) as a main raw material, methyl methacrylate (MMA), butyl acrylate (BA) and glycidyl methacrylate (GMA). The fluorine-containing acrylic composite coating comprises, by mass percentage, 56-64% of fluorine-containing emulsion, 14-18% of titanium white powder (R type), 6-10% of nano-SiO 2 2-2.8% of film-forming aids, 0.16-0.24% of defoaming agents, 0.2-0.4% of thickening agents and deionized water, and the balance is 100%. Compared with traditional acrylate coatings and fluorocarbon coatings, the coating has the advantages of high weather resistance, low surface energy, balanced mechanical properties, economy and environmental protection, and the like. The coating has the effects of resisting ultraviolet light and salt spray corrosion.
Owner:AMBASSADOR PAINT (ANHUI) CO LTD +2
Fluorine-containing acrylic acid composite coating with high weather resistance and preparation method of fluorine-containing acrylic acid composite coating
ActiveCN120818275AAntifouling/underwater paintsPaints with biocidesPolymer scienceGlycidyl methacrylate
The invention relates to the field of fluorine-containing coatings, and discloses a high-weather-resistance fluorine-containing acrylic acid composite coating and a preparation method thereof. The high-weather-resistance fluorine-containing acrylic acid composite coating is prepared by taking 2-difluoromethyl-ethyl acrylate (DFMAET) as a main raw material and carrying out emulsion polymerization on the DFMAET, methyl methacrylate (MMA), butyl acrylate (BA) and glycidyl methacrylate (GMA). The fluorine-containing acrylic acid composite coating is prepared from the following components in percentage by mass: 56 to 64 percent of fluorine-containing emulsion, 14 to 18 percent of titanium dioxide (R type), 6 to 10 percent of nano SiO2, 2 to 2.8 percent of coalescing agent, 0.16 to 0.24 percent of defoaming agent, 0.2 to 0.4 percent of thickening agent and the balance of deionized water. Compared with traditional acrylate coatings and fluorocarbon coatings, the coating has the advantages of high weather resistance, low surface energy, balanced mechanical properties, economy, environmental protection and the like. And the coating has the effects of resisting ultraviolet irradiation and salt spray corrosion.
Owner:AMBASSADOR PAINT (ANHUI) CO LTD +2
Method for preparing isosorbide ester sulfate and compositions thereof
PCT designated stage expiredWO2025093370A1Organic chemistryTransportation and packagingPolymer scienceEster sulfate
This invention deals with a modified method for preparing isosorbide ester sulfate and compositions comprising an isosorbide ester sulfate and a fatty alcohol sulfate and the use of such compositions, particularly in cleaning compositions, such as laundry detergent or hand dish compositions or in emulsion polymerization as emulsifier.
Owner:BASF SE +1
Macromolecular self-repairing material for tire and preparation method of macromolecular self-repairing material
The invention discloses a macromolecular self-repairing material for a tire and a preparation method of the macromolecular self-repairing material. Comprising 55 to 65 parts of polyurethane modified rubber, 25 to 30 parts of emulsion polymerized styrene-butadiene rubber, 6 to 10 parts of ethylene-acrylate rubber, 12 to 20 parts of composite resin, 10 to 13 parts of naphthenic rubber oil, 7 to 11 parts of hydroxyl-terminated polyisobutene, 25 to 41 parts of composite reinforcing filler, 10 to 15 parts of a composite plasticizer, 1.5 to 2.5 parts of a titanate coupling agent, 1 to 1.5 parts of a vulcanizing agent, 0.5 to 0.8 part of an assistant crosslinker, 0.4 to 0.7 part of a vulcanization accelerator and 1.5 to 2.5 parts of a vulcanization accelerator. The high-molecular self-repairing material for the tire can realize the self-repairing effect of the tire, has excellent durability and adhesive force, greatly improves the anti-puncture and anti-air-leakage functions of the tire, and improves the safety performance of a vehicle.
Owner:SANOP (ANHUI) SPECIAL EQUIPMENT TECHNOLOGY CO LTD
High-stability graphene water-based dispersion liquid and heat-conducting coating containing dispersion liquid
The invention relates to the technical field of coatings, in particular to a high-stability graphene water-based dispersion liquid and a heat-conducting coating containing the dispersion liquid. The dispersion liquid is prepared by performing multi-stage grinding on a mixed surfactant, a defoaming agent, graphene powder and deionized water, wherein the mixed surfactant is prepared from sodium carboxymethyl cellulose, polyvinyl alcohol and an acrylic acid-acrylate-sulfonate terpolymer according to a ratio of 1: 1: 1; on the basis, an in-situ polymerization and semi-continuous seed emulsion polymerization process is adopted, a dispersion liquid and an acrylate monomer are copolymerized to prepare a modified emulsion, and then the modified emulsion and nano boron nitride premixed slurry are compounded to form the heat-conducting coating. According to the invention, the problems of poor dispersion stability, high interface thermal resistance and the like of graphene in a polymer matrix are effectively solved, and the prepared heat-conducting coating has excellent heat-conducting property, interface bonding strength and process stability, and is suitable for heat management fields such as heat dissipation of electronic devices and the like.
Owner:JIANGSU DAOPENG TECH CO LTD
Viscose emulsion added into drilling fluid and used for enhancing coal rock strength and preparation method thereof
The invention belongs to the technical field of coal rock drilling, and relates to a viscose emulsion added into drilling fluid and used for enhancing coal rock strength and a preparation method of the viscose emulsion. The emulsion is prepared through emulsion polymerization and is prepared from the following raw materials: an oil phase, a water phase and a surfactant. The oil phase comprises a main monomer, a functional monomer, a crosslinking monomer, a first initiator and a solvent. The prepared emulsion can block coal rock pores to prevent drilling fluid from invading, the compressive strength of the coal rock is enhanced through the bonding effect, meanwhile, the affinity of the emulsion to coal and metal is different, and the rod sticking risk can be reduced. The prepared emulsion is mixed with drilling fluid to soak the coal rock, so that the original strength of the coal rock can be basically kept, and the problems of borehole wall instability, drill jamming caused by chipping and the like in the coal rock gas drilling process are solved.
Owner:SHANDONG HIGH-TECH PETROLEUM TECH CO LTD
Optically clear pressure sensitive adhesive (OCA) and preparation method therefor
Disclosed in the present invention are an optically clear pressure sensitive adhesive (OCA) and a preparation method therefor. The optical pressure-sensitive adhesive is composed of one or more block copolymers. In the method, reversible addition fragmentation chain transfer emulsion polymerization is used; by controlling monomer types and the feeding sequence, the block copolymers are designed and prepared in a controllable manner; and one or more prepared block copolymers are mixed, and by means of solution film forming, an optically clear pressure sensitive adhesive (OCA) is prepared. The optically clear pressure sensitive adhesive (OCA) prepared in the present invention has the advantages of high stretchability, high transparency and a low haze, can effectively reduce the modulus and improve the peel strength on the basis that the rebound resilience is not influenced, and has large application prospects in the fields of electronic display apparatuses, wearable electronic apparatuses, resistive touch screens, intelligent optical devices, etc.
Owner:ZHEJIANG UNIV