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39results about How to "Good shear thinning" patented technology
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Antibacterial supermolecule aquogel and preparation method and application thereof
InactiveCN101564400AEasy to prepareEasy to operateAntibacterial agentsInorganic active ingredientsBiocompatibility TestingSILVER NITRATE CRYSTALS
The invention discloses a method for in-situ preparing antibacterial supermolecule aquogel. The method comprises the following operation steps: silver nitrate crystal and polyethyleneglycol-polypropylene glycol-polyethyleneglycol triblock copolymer solution are mixed and stirred to obtain mixed solution; the steps of stirring the mixed solution for 15 minutes and ultrasonically dispersing the mixed solution for 5 minutes are alternatively carried out for 2-4 hours to obtain nano silver sol; and the nano silver sol and Alpha-cyclodextrin solution are mixed, stirred and stands at the room temperature to obtain hydrogel. The hydrogel can be used for preparing injectable drug carriers. The invention has the advantages of simple operation, adjustable gel strength and the gelation time, room temperature forming, no involvement of chemical cross linking reaction and the usage of organic solvent, favorable biocompatibility and antibacterial property of obtained gel, and the like and is prospective to be widely applied in the field of biomedical engineering materials.
Owner:SUN YAT SEN UNIV
Cellulose type compound system drilling fluid filtrate loss reducer and preparation method thereof
ActiveCN105885810AReduce API filtration loss at room temperatureThe overall thickness is thinDrilling compositionSaline waterWell drilling
The invention relates to a cellulose type compound system drilling fluid filtrate loss reducer and a preparation method thereof and aims to provide a cellulose type drilling fluid filtrate loss reducer low in cost, excellent in filtrate loss reduction performance and rheological property, environmental friendly and suitable for saltwater-based mud. The cellulose type compound system drilling fluid filtrate loss reducer is prepared from, by weight, 0.6-0.9% of PAC (polyanionic cellulose), 0.06-0.18% of nanocelluloe whiskers and the balance saltwater-based mud, wherein in the saltwater-based mud, the mass fraction of sodium chloride is 14-16%, the mass fraction of bentonite is 2.5-3.5%, and pH of drilling fluid is 9.5-10.5. The cellulose type compound system drilling fluid filtrate loss reducer has excellent synergistic filtrate loss reduction effects; high-temperature high-pressure filtrate loss and API filtrate loss after ageing of a drilling fluid system are remarkably reduced, a shear thinning property is more evident, PAC consumption is reduced by 50% maximally, and accordingly cost is greatly reduced.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +2
Temperature resistant, non-crosslinked and biodegradable gel leak-stopping agent and preparation method thereof
ActiveCN102358771AImprove temperature resistanceMeet construction requirementsDrilling compositionFluid LeakStructure type
The present invention provides a temperature resistant, non-crosslinked and biodegradable gel leak-stopping agent and a preparation method thereof. The gel leak-stopping agent of the present invention has the following advantages that: the gel leak-stopping agent has extra-wide temperature adaptability, can adapt to a temperature range of 25-180 DEG C, and can meet requirements of oil field construction; the gel leak-stopping agent has rapid dissolution rate, and forms the structure type gel with good shear thinning behavior after dissolving, wherein the structure type gel is the liquid whichcan be pumped and flow; the gel leak-stopping agent does not require cross-linking; the real fluid leak-stopping is realized; the construction is convenient; the product is completely dissolved in water, no precipitate and flocculent insoluble matter are generated during the whole process, no insoluble matter is generated after the product is degraded, such that the flow back is easy or the flow back is not required, the reservoir is not damaged; the product is safe and environmental protection, and is synthesized by the multi-stage initiation, such that the product conversion rate is high, the stability is good, no toxic damage is generated to the stratum, the production layer can be protected.
Owner:北京爱普聚合科技有限公司
Self heat-generating and gas-generating clean fracturing fluid
InactiveCN102952535ALess harmfulImprove seepage capacityDrilling compositionPolymer scienceFiltration
The invention relates to a self heat-generating and gas-generating clean fracturing fluid comprising the raw materials of, by mass: 0.2-0.5% of a thickening agent, 2-4% of a structural enhancer, 2-15% of a heat generating agent A, 2-10% of a heat generating agent B, 2% of a structural enhancer solvent, 1-5% of a heat generating catalyst, 0.1-1% of a cleanup additive, 0.05-1.0% of a gel breaker, 0.05-0.15% of a broken plastic additive, and balance of water. The fracturing fluid has good temperature resistance, good shearing resistance, and sand-carrying property. The fluid can automatically generate heat and gas, such that the fracturing fluid is foamed in stratum. The fluid has low filtration loss. Gel breaking can be carried out with conventional persulfate and stratum oil, gas, and water dual gel breaking manner. Quick flow-back after pressure can be realized, and low-pressure oil and gas well self-spraying flow-back effect can be greatly improved. No residue and low harm is caused. The fracturing fluid can be used in fracturing modification of middle-shallow-stratum high-pour-point oil, crude oil with high viscosity, and low-pressure low-permeability oil and gas reservoirs.
Owner:PETROCHINA CO LTD
Supramolecular hydrogel gene vector material, and preparation method and application thereof
InactiveCN101716346AEasy to prepareMild conditionsGenetic material ingredientsImmunological disordersEnd-groupGene vector
The invention discloses a supramolecular structural hydrogel gene vector material and a preparation method and application thereof. The method comprises the following operation steps: synthesizing a multi-block copolymer with cation chain segments through modification of a terminal group of triblock copolymer of a polyethylene glycol-polypropylene glycol-polyethylene glycol which is modified by polylysine; then, mixing the copolymer with DNA solution to obtain DNA compound micelle; further, mixing and then stirring the micelle solution and solution of alpha-cyclodextrin; and keeping mixed solution at the room temperature to obtain hydrogel. The hydrogel can be used for preparing an injectable gene vector. The method has the advantages that the method has simple operation, can adjust the strength of the hydrogel and the gelatination time, can mold at the room temperature and does not relate to chemical crosslinking reaction and the use of organic solvent; and the obtained hydrogel has the advantages of temperature sensitivity, good bio-compatibility, obvious transfection effect and the like; and the method is hopeful to be widely applied in the field of a biomedical engineering material.
Owner:SUN YAT SEN UNIV
Seawater-based fracturing fluid and preparation method thereof
The present invention discloses a seawater-based fracturing fluid and a preparation method thereof. 100 parts of the fracturing fluid comprises, by weight, 0.3-0.8 part of a thickener, 0.1-0.6 part of a cross-linking agent, 0.05-0.1 part of an oxygen scavenger, 0.02-0.05 part of a tackifying auxiliary agent, 0.05-0.2 part of gel breaker, and the balance or part of seawater, wherein the thickener modified polyacrylamide is formed by carrying out copolymerization on acrylamide, a hydrophobically modified monomer and a sulfonate, the hydrophobically modified monomer is dodecyl alkyl halide, and the cross-linking agent is an organic zirconium cross-linking agent or an organic titanium-zirconium composite cross-linking agent. According to the present invention, with the seawater-based fracturing fluid and the preparation method thereof, the technical problems of being incapable of continuously mixing, insufficient tackifying performance, poor salt resistance and poor shearing resistance of the seawater-based fracturing fluid in the prior art are solved; and the seawater-based fracturing fluid with characteristics of good tackifying, strong salt resistance, strong shearing resistance and continuous mixing and suitable for offshore oil fields is provided.
Owner:PETROCHINA CO LTD
Hydrophobic monomer and hydrogen for drilling leaking stoppage based on monomer
ActiveCN106349113AHigh apparent viscosityGood shear thinningCarbamic acid derivatives preparationOrganic compound preparationSulfonatePolymer science
The invention provides a hydrophobic monomer and a preparation method thereof, wherein the structural formula of the monomer is as shown in the formula I. The invention also provides hydrogen for drilling leaking stoppage, which is prepared from reaction raw materials comprising alkenyl amide, alkenyl carboxylate, alkenyl sulfonate, a surfactant, the monomer and an initiator by a free-radical micelle polymerization method. The hydrogel has high apparent viscosity and high shear dilutability under a low shear rate before gelatinization, has excellent dilution resistance after gelatinization, has the advantages of simple production process and low cost, and is favorable for industrialized production and on-site popularization and application.
Owner:CHINA PETROLEUM & CHEM CORP +1
Association type high-temperature resistant fracturing fluid suitable for volcanic rock fracture
The invention provides an association type high-temperature resistant fracturing fluid suitable for volcanic rock fracture. The fracturing fluid comprises two parts, namely a base liquid and construction additives. The base liquid comprises following components by weight: 0.5-0.9% of a thickening agent and 0.2-0.3% of a flow promoter, with the balance being water. The construction additives comprise a thickening auxiliary agent and a gel breaker. The thickening auxiliary agent is 0.25-0.45% by weight of the base liquid. The gel breaker is 0.02-0.05% by weight of the base liquid. The fracturing fluid belongs to supramolecular structure fluids, and has good viscoelasticity, thus achieving viscoelastic sand carrying. The fracturing fluid has characteristics of capability of being clean and free of residue, good temperature resistance, shearing resistance, shearing dilutability, and the like. During fracturing construction, the fracturing liquid can reduce friction so as to reduce the construction pressure, and the fracturing liquid is low in harm to a reservoir stratum, thus increasing the success rate of fracturing construction, improving fracturing effects, and increasing the productivity of the reservoir stratum. The fracturing liquid is suitable for fracturing transformation of a volcanic rock reservoir stratum.
Owner:CHINA PETROLEUM & CHEM CORP +2
A kind of seawater-based fracturing fluid and preparation method of seawater-based fracturing fluid
The present invention discloses a seawater-based fracturing fluid and a preparation method thereof. 100 parts of the fracturing fluid comprises, by weight, 0.3-0.8 part of a thickener, 0.1-0.6 part of a cross-linking agent, 0.05-0.1 part of an oxygen scavenger, 0.02-0.05 part of a tackifying auxiliary agent, 0.05-0.2 part of gel breaker, and the balance or part of seawater, wherein the thickener modified polyacrylamide is formed by carrying out copolymerization on acrylamide, a hydrophobically modified monomer and a sulfonate, the hydrophobically modified monomer is dodecyl alkyl halide, and the cross-linking agent is an organic zirconium cross-linking agent or an organic titanium-zirconium composite cross-linking agent. According to the present invention, with the seawater-based fracturing fluid and the preparation method thereof, the technical problems of being incapable of continuously mixing, insufficient tackifying performance, poor salt resistance and poor shearing resistance of the seawater-based fracturing fluid in the prior art are solved; and the seawater-based fracturing fluid with characteristics of good tackifying, strong salt resistance, strong shearing resistance and continuous mixing and suitable for offshore oil fields is provided.
Owner:PETROCHINA CO LTD
Water-based industrial cleaning agent and preparation method thereof
InactiveCN108795592AEasy to useNo destructive effectNon-ionic surface-active compoundsFoam regulating compositionsWater basedCleansing Agents
The invention relates to a water-based industrial cleaning agent. The water-based industrial cleaning agent comprises the following components in percentage by weight: 0.1-40% of an N-acyl amino acidanionic surfactant, 0.1-20% of fatty acid methyl ester ethoxylate, 0.1-8% of alkyl glycoside, 0.1-8% of hydroxypropyl methyl cellulose, 0.1-10% of an auxiliary agent, and 30-89% of water. The cleaningagent has the characteristics of simple formula, safe use, environment-friendliness and the like, has little irritation to skin, low toxicity, good biodegradability, good use stability and storage stability, and can further improve the traditional cleaning process and improve the cleaning quality while reducing sewage discharge and environmental protection pressure.
Owner:CHANGSHA PUJI BIOTECH
High-strength supramolecular hydrogel, as well as preparation method and application thereof
InactiveCN104069507ASimple and fast manufacturing methodGuaranteed biocompatibilityGenetic material ingredientsPharmaceutical non-active ingredientsGene deliveryPolymer science
The invention relates to a method for preparing high-strength supramolecular hydrogel. The method comprises the following steps: (1) synthesizing polyethylene glycol-polycaprolactone-polycationic copolymer; (2) preparing a copolymer / nucleic acid composite liquid; and (3) mixing the copolymer / nucleic acid composite liquid obtained in the step (2) and an alpha-cyclodextrin liquid to prepare the high-strength supramolecular hydrogel. The invention also relates to the high-strength supramolecular hydrogel prepared by the method and an application of the hydrogel. The hydrogel forming process does not have chemical crosslinking reactions, the influence of chemical crosslinking reaction by-products on the activity of nucleic acid can be effectively avoided, the hydrogel has an effective gene transfer effect, the preparation method is convenient and quick, the hydrogel can be formed at room temperature, and the bioactivity of an embedded gene and the biocompatibility of a material can be kept. According to the hydrogel, the defect of quick degradation of current similar gel materials can be overcome, the nucleic acid can be released for more than 2 weeks, and the aim of long-time durable transfection can be achieved.
Owner:广州新犇富科技有限公司
Underground coal mine while drilling collapse prevention flushing fluid and preparation method thereof
InactiveCN108276978AMaintain stabilityGood anti-collapse effectDrilling compositionCarrying capacityGeomorphology
The invention discloses underground coal mine while drilling collapse prevention flushing fluid and a preparation method thereof, and is mainly applied to the underground coal mine drilling construction process. The while drilling collapse prevention flushing fluid adopts a formula that 3 to 4kg of a thickening main agent, 4 to 5kg of an auxiliary thickening agent, 4 to 5kg of a flocculant, 3 to 5gk of biological enzyme, and 40 to 50kg of bentonite are added into each cubic meter of water. The underground coal mine while drilling collapse prevention flushing fluid is simple in preparation method and excellent in effect, has excellent rheological property, collapse prevention wall building property and degradability, and meanwhile has high shear force and coal slag carrying capacity.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Supermolecular hydrogel and preparation method and application thereof
InactiveCN102634043BMaintain biological activityGuaranteed biocompatibilityMacromolecular non-active ingredientsVector-based foreign material introductionBiocompatibility TestingPolyethylene glycol
The invention discloses supermolecular hydrogel and preparation method and application thereof. The preparation method of the supermolecular hydrogel comprises the following steps of: synthesizing a polyethylene glycol modified cation copolymer; mixing with a nucleic acid solution and standing to obtain a copolymer / nucleic acid composite solution; and finally, mixing with alpha-cyclodextrin solution, and standing to obtain the supermolecular hydrogel capable of acting on a gene vector material. In the forming process of the hydrogel disclosed by the invention, a chemical crosslinking reactiondoes not happen, and thus the influence of a byproduct of the chemical crosslinking reaction on the activity of nucleic acid is effectively avoided, an efficient gene transfer effect is realized, andthe transfection efficiency is obviously improved over the conventional gel material; and moreover, the preparation method is convenient and quick, realizes formation at room temperature, imposes relatively low requirements on concentration and temperature, and is favorable for maintaining the biological activity of embedded gene and the biocompatibility of the material.
Owner:广州新犇富科技有限公司
Super-molecular hydrogel double-medicament carrier and preparation method as well as application thereof
InactiveCN102247602BWide range of usesEasy to preparePharmaceutical non-active ingredientsPharmaceutical active ingredientsPolyethylene glycol monomethyl etherProdrug
The invention discloses a super-molecular hydrogel double-medicament carrier for simultaneously loading hydrophilic and hydrophobic medicaments and a preparation method as well as application thereof. The method comprises the following operating steps of: performing chemical modification on the hydrophobic medicament by using methoxypolyethylene glycol to synthesize a water-soluble macromolecularprodrug; physically mixing prodrug molecules with the hydrophilic medicament; further mixing the mixed solution with an alpha-cyclodextrin solution and stirring; and standing at room temperature to obtain the super-molecular hydrogel double-medicament carrier for simultaneously loading the hydrophilic and the hydrophobic medicaments. The carrier has the advantages of easiness in operation, adjustable gel strength and gelation time, forming at room temperature, no chemical crosslinking reaction or organic solvent, high bioavailability, sustainable and controllable release of the medicament andthe like, and is expected to be widely applied to the field of biomedical engineering materials.
Owner:SUN YAT SEN UNIV
Flow pattern regulator for oil-based drilling fluid and preparation method
PendingCN111574674AHigh apparent viscosityReduce apparent viscosityDrilling compositionPolyolPtru catalyst
The invention discloses a flow pattern regulator for an oil-based drilling fluid and a preparation method. The flow pattern regulator comprises the following raw materials in parts by weight: 4-8 parts of isocyanate, 50-85 parts of polyether polyol, 0.5-5 parts of a small molecular amine compound, 0.1-0.5 part of a catalyst and 5-40 parts of a solvent. The flow pattern regulator for the oil-baseddrilling fluid in the invention has good sand suspending capacity at a low shearing rate; under the condition of a high shearing rate, the flow pattern regulator has good dynamic sand carrying capacity, is beneficial for a rapid drilling stage, keeps a well in a good clean state and improves drilling quality and drilling speed; and the flow pattern regulator is particularly applicable as a flow pattern regulator in oil-based drilling fluid systems with high requirements on static sand suspending and dynamic sand carrying, such as horizontal wells and extended reach wells.
Owner:北京中科日升科技有限公司 +1
Joint lubricant and preparation method thereof
ActiveCN109481739AGood shear thinningStable supportSurgeryPharmaceutical delivery mechanism2-methacryloyloxyethyl phosphorylcholineEngineering
The invention provides a joint lubricant. The joint lubricant is gel prepared from the following components in parts by weight: 13-20 parts of 2-methacryloyloxyethyl phosphorylcholine, 6-10 parts of methylene bisacrylamide, 170-256 parts of Tween 80, 159-239 parts of Span 80, 2.4-3.7 parts of ammonium peroxydisulfate, 12-19 parts of tetramethylethylenediamine, 4000-6000 parts of deionized water and 5248-7858 parts of hexane. The joint lubricant has excellent shearing thinning performance, has relatively high viscosity under an unstressed effect, and has the viscosity reduced along with increase of the shearing rate under a stressed effect. Hereby, the gel perhaps has excellent supporting effect when a patient stands still, but relatively low viscosity when the patient walks to reduce friction, and thus has durable and strong lubricating effect. The injection microgel prepared by the method can be used as a new choice for intervention of patients with early osteoarthritis.
Owner:WEST CHINA HOSPITAL SICHUAN UNIV
Drilling fluid as well as preparation method and application thereof
InactiveCN111087980ALow densityGood shear thinningDrilling compositionMaterials scienceSodium hydroxide
The invention provides a drilling fluid as well as a preparation method and application thereof. The drilling fluid is prepared from the following components in percentage by mass: 2-5% of bentonite,0.1-0.2% of sodium hydroxide, 0.2-0.9% of a polymer coating agent, 1-2% of a polymer filtrate reducer, 0.2-1% of a gelatinizing agent, 1-2% of a film-forming agent, 1-3% of an asphalt anti-collapse agent, 0.5-2% of emulsified liquid paraffin, 1-3% of amino modified polyether polyol, 3-7% of potassium chloride, 1-3% of a lubricant and 8-50% of limestone powder, and the balance being water. The density of the drilling fluid is 1.1-1.3 g / cm<3>. When the drilling fluid is used for drilling, the drilling speed can be increased, the purposes of stabilizing the wall of a shale stratum and reducing the pressing effect of rock debris can be achieved, and the drilling fluid is particularly suitable for drilling of a shale-containing stratum.
Owner:PETROCHINA CO LTD
Composite paste for disperse printing and preparation method thereof
The invention discloses composite paste for disperse printing and a preparation method thereof, and belongs to the technical field of textile printing and dyeing. The composite paste is characterizedin that starch and tamarind gum are uniquely adopted to be taken as a dispersing base material with a product subjected to carboxymethylation and modification, and the dispersing base material is compounded with sodium carboxymethyl cellulose, sodium hexametaphosphate and sodium dihydrogen phosphate; and the obtained composite paste has relatively good rheological property, water-holding propertyand paste-removing property. The composite paste can be used after being directly dissolved with cold water, is relatively good in stability, and is convenient for being stored for a long time.
Owner:HUBEI DAYA BIOLOGICAL TECH CO LTD
A biphenyl hydrophobic monomer and leakage plugging gel based on the monomer
ActiveCN106349115BEasy injectionSimple production processCarbamic acid derivatives preparationOrganic compound preparationSulfonateCarboxylic salt
The invention provides a bis-phenyl hydrophobic monomer and a preparation method of the monomer, wherein the structural formula of the monomer is as shown in the formula I. The invention also provides plugging gel, which is prepared from reaction raw materials comprising alkenyl amide, alkenyl carboxylate, alkenyl sulfonate, a crosslinking agent, the monomer and an initiator by a free-radical micelle polymerization method. The plugging gel has high shear dilutability before gelatinization, has excellent dilution resistance after gelatinization, has the advantages of simple production process and low cost, and is favorable for industrialized production and on-site popularization and application.
Owner:CHINA PETROLEUM & CHEM CORP +1
Self-crosslinking polymer, oil field profile control and flooding agent and preparation method
ActiveCN114437289AOvercome the Effect of MatchingThe crosslinking reaction is reversibleDrilling compositionChemical structurePolymer science
The invention discloses a self-crosslinking polymer, an oil field profile control and flooding agent and a preparation method, and belongs to the field of oil field profile control and flooding. The chemical structural formula of the self-crosslinking polymer is shown in the following formula (I), in the formula, R is carbon chain alkyl with the carbon atom number of 15-25, and X is Cl <-> or Br <->; x is equal to 0.01-0.3, y is equal to 0.01-0.3, z is equal to 0.001-0.05, and x + y + z is equal to 1. The polymer is reversible in gelling, has an effect of deep profile control, and is particularly suitable for being used as an oil field profile control agent.
Owner:PETROCHINA CO LTD
Improved method for preparing Dingyou glue from Sphingomonas sp.
ActiveCN110079568AImprove salt toleranceImproved rheological propertiesMicroorganism based processesFermentationMicroorganismSalt resistance
The invention relates to microbial fermentation, in particular to an improved method for preparing Dingyou glue from Sphingomonas sp. The method comprises the following steps that: sterilized cultureliquid containing carbon sources and nitrogen sources is inoculated with Sphingomonas sp. CGMCC No. 9531; the pH value of the culture liquid is regulated for ventilation and stirring fermentation; after the fermentation is finished, fermentation liquid is pretreated and extracted to obtain the Dingyou glue; in the fermentation process, the technological means of controlling the inoculation quantity and the pH value, regulating the carbon nitrogen ratio and the like are used; in the extraction process, the technological means of using the fermentation liquid for adjusting the pH value, raisingthe temperature and the like are used. The method solves the technical problems of poor salt tolerance, poor rheological property and the like of products in the prior art, and has the advantages of good salt tolerance and good rheological property of the Dingyou glue, high product whiteness, low production cost, high production safety and the like.
Owner:HEBEI XINHE BIOCHEM
Temperature resistant, non-crosslinked and biodegradable gel leak-stopping agent and preparation method thereof
ActiveCN102358771BImprove temperature resistanceMeet construction requirementsDrilling compositionEnvironmental resistanceFluid Leak
The present invention provides a temperature resistant, non-crosslinked and biodegradable gel leak-stopping agent and a preparation method thereof. The gel leak-stopping agent of the present invention has the following advantages that: the gel leak-stopping agent has extra-wide temperature adaptability, can adapt to a temperature range of 25-180 DEG C, and can meet requirements of oil field construction; the gel leak-stopping agent has rapid dissolution rate, and forms the structure type gel with good shear thinning behavior after dissolving, wherein the structure type gel is the liquid which can be pumped and flow; the gel leak-stopping agent does not require cross-linking; the real fluid leak-stopping is realized; the construction is convenient; the product is completely dissolved in water, no precipitate and flocculent insoluble matter are generated during the whole process, no insoluble matter is generated after the product is degraded, such that the flow back is easy or the flow back is not required, the reservoir is not damaged; the product is safe and environmental protection, and is synthesized by the multi-stage initiation, such that the product conversion rate is high, the stability is good, no toxic damage is generated to the stratum, the production layer can be protected.
Owner:北京爱普聚合科技有限公司
Supramolecular hydrogel gene vector material, and preparation method and application thereof
InactiveCN101716346BEasy to prepareMild conditionsGenetic material ingredientsImmunological disordersEnd-groupGene vector
The invention discloses a supramolecular structural hydrogel gene vector material and a preparation method and application thereof. The method comprises the following operation steps: synthesizing a multi-block copolymer with cation chain segments through modification of a terminal group of triblock copolymer of a polyethylene glycol-polypropylene glycol-polyethylene glycol which is modified by polylysine; then, mixing the copolymer with DNA solution to obtain DNA compound micelle; further, mixing and then stirring the micelle solution and solution of alpha-cyclodextrin; and keeping mixed solution at the room temperature to obtain hydrogel. The hydrogel can be used for preparing an injectable gene vector. The method has the advantages that the method has simple operation, can adjust the strength of the hydrogel and the gelatination time, can mold at the room temperature and does not relate to chemical crosslinking reaction and the use of organic solvent; and the obtained hydrogel has the advantages of temperature sensitivity, good bio-compatibility, obvious transfection effect and the like; and the method is hopeful to be widely applied in the field of a biomedical engineering material.
Owner:SUN YAT SEN UNIV
Hydrophobic monomer, high molecular polymer, and preparation methods and application thereof
ActiveCN107235865AImprove temperature resistanceGood resistance to water dilutionCarbamic acid derivatives preparationOrganic compound preparationPolymer scienceHydrophobic monomer
The invention provides a hydrophobic monomer shown in a formula 1 and a preparation method thereof. The invention further provides a high molecular polymer and a preparation method thereof. Besides, the invention also provides leaking stopping gel containing the high molecular polymer. The leaking stopping gel provided by the invention has the advantages of appropriate gelation time, good shear dilutability, high water dilutability resistance, and capability of meeting the demand of leaking stoppage on-site construction.
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of high-strength supramolecular hydrogel and its preparation method and application
InactiveCN104069507BSimple and fast manufacturing methodGuaranteed biocompatibilityGenetic material ingredientsPharmaceutical non-active ingredientsPolyethylene glycolBiocompatibility Testing
Owner:广州新犇富科技有限公司
A kind of 3D printing platform spray formulation and preparation method thereof
ActiveCN108178994BGuaranteed flatnessHigh bonding strengthAdditive manufacturing apparatusMacromolecular adhesive additivesSimple Organic CompoundsPolymer science
The invention provides a 3D printing platform spray preparation. The 3D printing platform spray preparation is prepared from the following raw materials in percentage by weight: an anionic film forming polymer, hydrophobically modified acrylate or salt thereof, a block polymer composed of at least one polyethylene glycol block and at least one polypropylene glycol block, an organic solvent, liquefied low-boiling-point organic compound gas and polysiloxane. All the components in the preparation have synergistic actions and jointly enable the sprayed spray preparation to have proper viscosity, adhesion strength, shearing dilutability and solidification speed, so that the spray preparation can be uniformly covered on the surface of the 3D printing platform; after the spray preparation is solidified, the spray preparation has proper strength; the molding precision is ensured; and the occurrence of warpage is effectively avoided.
Owner:SHENZHEN ANYCUBIC TECH CO LTD
High-temperature-resistant high-density biomass synthetic base drilling fluid and preparation method thereof
ActiveCN109517586AThe process steps are simpleEasy to operateDrilling compositionPetroleumRaw material
The invention provides high-temperature-resistant high-density biomass synthetic base drilling fluid and belongs to the technical field of petroleum and gas environmental-friendly synthetic base drilling fluid. The high-temperature-resistant high-density biomass synthetic base drilling fluid provided by the invention comprises a biomass alcohol ether base solution, a CaCl2 aqueous solution, organic soil, a high-temperature-resistant emulsifier, a lubricating agent, an extraction agent, a filtrate reducer, CaO and barite, wherein the biomass alcohol ether has a structure of a formula I; the high-temperature-resistant emulsifier has a structure of a formula II; and the extraction agent has a structure of a formula III. With the adoption of the biomass alcohol ether, the high-temperature-resistant emulsifier and the extraction agent, under the comprehensive effects of the various components in the drilling fluid, the high-temperature-resistant high-density biomass synthetic base drillingfluid provided by the invention is prepared from green and environmental-friendly raw materials and has excellent biodegradability and viscosity-temperature characteristics.
Owner:CHINA PETROCHEMICAL CORP +2
Hydrophobic monomer and hydrogel for drilling plugging based on the monomer
ActiveCN106349113BHigh apparent viscosityGood shear thinningCarbamic acid derivatives preparationOrganic compound preparationSulfonatePolymer science
The invention provides a hydrophobic monomer and a preparation method thereof, wherein the structural formula of the monomer is as shown in the formula I. The invention also provides hydrogen for drilling leaking stoppage, which is prepared from reaction raw materials comprising alkenyl amide, alkenyl carboxylate, alkenyl sulfonate, a surfactant, the monomer and an initiator by a free-radical micelle polymerization method. The hydrogel has high apparent viscosity and high shear dilutability under a low shear rate before gelatinization, has excellent dilution resistance after gelatinization, has the advantages of simple production process and low cost, and is favorable for industrialized production and on-site popularization and application.
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of cellulose compound system drilling fluid fluid loss reducer and preparation method thereof
ActiveCN105885810BReduce API filtration loss at room temperatureThe overall thickness is thinDrilling compositionSaline waterWell drilling
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +2
Water-solubility molecule associatad three-construction units hydrophobic associated polymer and synthesizing process thereof
InactiveCN100391990CEase of industrial productionThe synthesis process conditions are simpleSolubilityAlkylphenol
The invention relates to a compounding method to form water solubility intermolecular association ternary hydrophobic association polymer that includes acrylamide, sodium acrylate, and allyl-alkylphenyl aether three constructions. The method includes the following steps: using acetone as reacting solvent, alkylphenols and allyl chloride as raw material, benzyl triethyl ammonium chloride as phase-transfer catalyst, reacting for 4-8 hours at 40-60 degree centigrade to form drainage monomer allyl-alkylphenyl aether; adding sodium acrylate, acrylamide and allyl-alkylphenyl aether monomer into reactor according to the mol ratio as 20-30:69.2-79.2:0.8, adding inducing agent, sealing reacting for 2-6 hours to gain terpolymer. The terpolymer has good temperature resistance, saline tolerance, dissolubility and high temperature stability. The invention is easy to compound and has mild condition.
Owner:SICHUAN GUANGYA POLYMER CHEM
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