196 results about "Miscibility" patented technology

The invention relates to the technical field of exploration and development of unconventional oil and gas reservoirs, in particular to an experimental device and method for quantitatively evaluating CO2-hydrocarbon-water interaction mixing and dissolving capacity of a water-containing gas reservoir. The experimental device comprises a vacuum pump, a constant-temperature air bath box, a sample preparation unit, an injection unit, a testing unit and a metering unit. The method comprises the following steps: injecting excessive pure CH4 into a sample preparation unit at a constant pressure, enabling a two-phase system of the pure CH4 and formation water to reach hydrocarbon-water phase balance, transferring the formation water of saturated hydrocarbon into a visual phase tester, injecting CO2 into the visual phase tester at a constant pressure, fully stirring fluid, standing for a period of time, carrying out ion chromatography analysis, and determining the content of CO2 in the formation water. According to the experimental device, the proportion of CO2 and the proportion of CH4 in undissolved gas are determined, an experiment is carried out through the experimental device, a CO2-hydrocarbon-water interaction miscibility theory system in the whole CO2 injection and burying process of the gas reservoir with water can be perfected, and the problem that the miscibility of CO2-CH4 in the CO2-hydrocarbon-water system under the high-temperature and high-pressure conditions is difficult to effectively and quantitatively evaluate is effectively solved.

The present invention belongs to the technical field of oil and gas exploration and development. Disclosed are a nuclear-magnetic-resonance-based method and system for characterizing the degree of miscibility of CO2 flooding. The method comprises: on the basis of a slim tube method, testing the minimum miscible pressure of crude oil of a target oil reservoir and CO2 (S101); on the basis of the minimum miscible pressure, conducting CO2 oil displacement experiments using cylindrical cores, collecting, in real time, two-dimensional weighted nuclear magnetic resonance images and multi-component T2 spectra of a fluid in the cores varying over time and space, synchronously collecting an outlet-end fluid, and conducting a chromatographic test to obtain chromatographic test data (S102); and on the basis of the two-dimensional weighted nuclear magnetic resonance images, the multi-component T2 spectra and the chromatographic test data, performing dynamically-changing qualitative and quantitative characterization on the degree of miscibility, so as to obtain qualitative and quantitative characterization results of the degree of miscibility of CO2 and the crude oil (S103).

Extraction media for removal, concentration, and recovery of PEAS from contaminated materials in fluorous biphasic and / or multiphasic systems and related methods. The systems may include a fluorous functionalized solid support and a fluorous fractionation reactor permitting PFAS separation for targeted recovery. Extraction mediums comprise a polyelectrolyte with carbon dioxide / supercritical carbon dioxide (CO2 / SCCO2) with additional possible reagent modifiers that permit miscibility switches and compatibility with NSF / ANSI certifications. The extraction medium may include modifiers to enhance targeted recovery, such as F -solvents and / or organic carrier solvents. The disclosed systems and methods permit advantages such as 1 ) reduced sensitivity to PFAS-impacted phase co-contam inants such as competing anionic species and / or organic contaminants, 2) simple contact reactor retrofits, 3) enhanced removal of ultra- and / or short chain PFAS, 4) enhanced uniformity of matrix chemistry for downstream waste / wastewater management processes, and 5) the ability to recover valuable PFAS from waste / wastewater for processes that are dependent on their chemistry.

The invention discloses an environment-friendly degradable plastic food packaging bag and a preparation method thereof.The food packaging bag is prepared from, by weight, 90-100 parts of PBAT, 10-20 parts of PLA, 15-20 parts of antibacterial modified nano calcium carbonate, 1-2 parts of polyethylene wax and 1-2 parts of titanium dioxide, a large proportion of PBAT and a small proportion of PLA are used as base materials, and the base materials are prepared into the environment-friendly degradable plastic food packaging bag. When the component ratio difference is large, the intermolecular acting force of PBAT and PLA is stronger, the miscibility is better, the two base materials are mixed and dissolved to prepare base particles, and then the base particles are mixed and melted with other components, so that better compatibility can be achieved, and the mechanical property of the prepared degradable plastic food packaging bag is more excellent; when the antibacterial modified nano calcium carbonate is melted with other components of the plastic food packaging bag, the antibacterial modified nano calcium carbonate has better compatibility and better material fluidity during melting, meanwhile, silver of the prepared plastic bag is not easy to separate out, and the antibacterial performance of the plastic food packaging bag can be kept for a long time.

A paint remover composition including (a) tetrahydrofuran (THF) at a sufficient concentration to remove paint; (b) a low vapor pressure (LVP) coupling co-solvent present at an effective amount to maintain miscibility of the single-phase paint remover composition and to remove paint; (c) an amine with a molar volume of <100 cm3 / mol; and (d) water at a concentration of greater than 18 wt % of an overall concentration of the single-phase paint remover composition and the methods of making and using the same.

The invention belongs to the technical field of environmental protection, and particularly relates to a preparation method and application of diamine porous ionic liquid. The preparation method comprises the following steps: firstly, carrying out in-situ synthesis on an MEA-loaded zeolite imidazole framework MEA (at) ZIF-8 through a hydrothermal method; then synthesizing amine functionalized imidazole ionic liquid [Amim] [NTf2] which takes trifluoromethanesulfonyl imide as an anion through an ion exchange method; finally, on the basis of the principle of similar dissolvability, the [Amim] [NTf2] and the MEA (at) ZIF-8 are combined through a solvent dispersing and mixing method, and the diamine porous ionic liquid MEA (at) ZIF-8-Amim-PIL is prepared. The diamine porous ionic liquid prepared by the method retains excellent carbon capture performance of the ionic liquid and ZIF-8, realizes a synergistic effect of low-pressure CO2 high-density distribution of liquid pore channels and an efficient electrostatic effect of diamine groups, can be used for low-pressure flue gas carbon capture, and is high in regeneration efficiency, low in energy consumption and beneficial to environmental protection.

The application discloses an environment-friendly degradable plastic food packaging bag and a preparation method thereof. The food packaging bag comprises the following raw materials in parts by weight: PBAT 90-100 parts, PLA 10-20 parts, antibacterial modified nano calcium carbonate 15-20 parts, polyethylene wax 1-2 parts, and titanium dioxide 1-2 parts. PBAT and PLA are used as the base material in a large proportion and a small proportion respectively. When the component ratio is greatly different, the intermolecular force between PBAT and PLA is stronger, and the miscibility is better. The two base materials are first mixed to prepare base particles. When the base particles are mixed with other components, better compatibility is achieved. The prepared degradable plastic food packaging bag has more excellent mechanical properties. When the antibacterial modified nano calcium carbonate is melted with other components of the plastic food packaging bag, better compatibility is achieved, and the fluidity of the material during melting is better. Meanwhile, the prepared plastic bag is not easy to precipitate, and the antibacterial performance of the plastic food packaging bag can be maintained for a long time.

The invention discloses a peracetylated polysaccharide derivative mixing accelerator as well as a preparation method and application thereof, and relates to the technical field of polysaccharide derivatives. Alkyl polyglucoside and glycidyl ether are subjected to etherification reaction to obtain polysaccharide derivatives; and adding acetic anhydride and an organic weak base catalyst into the polysaccharide derivative, and carrying out esterification reaction to obtain the peracetylated polysaccharide derivative. The obtained peracetylated polysaccharide derivative can be used for reducing the minimum miscible pressure of CO2 in an offshore oilfield. The polysaccharide derivative provided by the invention is simple in synthesis process, and the molecular activity of the polysaccharide derivative can be regulated and controlled by changing the number of carbon dioxide-philic groups and the length of oleophylic unsaturated hydrocarbon chains, so that the polysaccharide derivative can be used in the CO2 oil displacement process of oilfield exploitation, and the minimum miscible pressure in the CO2 oil displacement process is effectively reduced.

The present invention relates to an alcohol conversion process wherein a homogenous transition metal catalyst is used. The catalyst is kept in solution throughout the whole process, including the reaction in liquid phase, passing several distillation steps and an aqueous extraction step. The catalyst neither precipitates as a solid nor is solved in the wash water due to the use of a solvent or solvent mixture having a high boiling point and a specific miscibility gap regarding the wash water.

The invention belongs to the technical field of medicines, and particularly relates to a flavonoid compound-meglumine co-amorphous substance and a preparation method thereof. The flavonoid compounds comprise baicalein, hesperetin, naringenin, kaempferol, quercetin, isoliquiritigenin and the like, and the co-amorphous substance consists of a single flavonoid compound and meglumine and is prepared by adopting a melting shock cooling method or a rotary evaporation method. The miscibility of the flavonoid compounds and the meglumine is screened through Hansen solubility. The crystal diffraction characteristics, thermodynamic properties and intermolecular interaction of the co-amorphous substance are measured through PXRD, DSC and FTIR, and it is shown that the six flavonoid compounds and meglumine successfully form a co-amorphous system. The solubility and the dissolution rate of the six flavonoid compound-meglumine co-amorphous substance are obviously superior to those of flavonoid bulk drugs, and the physical stability of the formed co-amorphous substance is obviously superior to that of a single amorphous drug, so that the co-amorphous substance shows good patent medicine performance.

The invention provides a modified high-water-miscibility phenolic resin emulsion as well as a preparation method and application thereof, and belongs to the technical field of phenolic resin. The modified high-water-miscibility phenolic resin emulsion is prepared from the following raw materials in parts by weight: 100 parts of a formaldehyde aqueous solution, 50 to 80 parts of phenol, 2 to 6 parts of a catalyst, 14 to 20 parts of a modifier A, 2 to 10 parts of a modifier B and 2 to 6 parts of an emulsifier, wherein the modifier A is melamine and / or dicyandiamide, and the modifier B is urea and / or ethylene urea. The modified high-water-miscibility phenolic resin emulsion disclosed by the invention has relatively high molecular weight, the content of free formaldehyde and free phenol in the phenolic resin emulsion is low, and the modified high-water-miscibility phenolic resin emulsion is green and environment-friendly; through specific synthesis and emulsification processes, the prepared phenolic aldehyde emulsion has the characteristic of infinite miscibility with water, has excellent miscibility with auxiliary materials such as silane, polyhydric alcohols, color paste and the like, and is high in process adaptability.

The present invention relates to a subsea storage system for storing a water miscible storage fluid and methods related thereto.

Extraction media for removal, concentration, and recovery of PFAS from contaminated materials in fluorous biphasic and / or multiphasic systems and related methods. The systems may include a fluorous functionalized solid support and a fluorous fractionation reactor permitting PFAS separation for targeted recovery. Extraction mediums comprise a polyelectrolyte with carbon dioxide / supercritical carbon dioxide (CO2 / scCO2) with additional possible reagent modifiers that permit miscibility switches and compatibility with NSF / ANSI certifications. The extraction medium may include modifiers to enhance targeted recovery, such as F-solvents and / or organic carrier solvents. The disclosed systems and methods permit advantages such as 1) reduced sensitivity to PFAS-impacted phase co-contaminants such as competing anionic species and / or organic contaminants, 2) simple contact reactor retrofits, 3) enhanced removal of ultra- and / or short chain PFAS, 4) enhanced uniformity of matrix chemistry for downstream waste / wastewater management processes, and 5) the ability to recover valuable PFAS from waste / wastewater for processes that are dependent on their chemistry.

One example of a jettable antioxidant formulation is used for three-dimensional (3D) printing. The jettable antioxidant formulation includes an antioxidant blend; a surfactant, a dispersant, or a combination thereof; a water-soluble or water-miscible organic co-solvent; and water. The antioxidant blend consists of a primary antioxidant and a secondary antioxidant.

Disclosed are a CO2 gas-soluble silicon nanofluid and a preparation method therefor. The method includes: taking nano-silica and grafting a silane coupling agent to obtain modified nano-silica; taking methylsiloxane, fluorosilicone, aminosiloxane and an end-capping agent, and performing polymerization under the action of a catalyst to obtain a functionalized network siloxane; and taking the modified nano-silica and the functionalized network siloxane, uniformly mixing, then heating for a Michael addition reaction, and obtaining the gas-soluble silicon nanofluid after the reaction is completed. The gas-soluble silicon nanofluid microscopically forms a network structure with modified nano-silica as a cross-linking point and polysiloxane as a chain; macroscopically, the effect of viscosity increase of the supercritical carbon dioxide is significant, and the dissolving pressure is low. The interfacial tension and the miscibility pressure between the crude oil and CO2 are significantly reduced.

The invention relates to the technical field of soil remediation, and discloses a soil remediation material for targeted adsorption of perfluoroalkyl acid organic pollutants and a preparation method of the soil remediation material. The soil remediation material is prepared from the following raw materials: microorganisms, a porous carrier, cationic gel, anionic gel and ferrite, wherein the microorganisms have the capability of driving a nitric acid reduction-ferrous oxidation process. According to the soil remediation material provided by the invention, the microorganisms with the capability of driving the nitric acid reduction-ferrous oxidation process, the porous carrier, the cationic gel, the anionic gel and the ferrite are used as raw materials, and the mechanical strength change of the material in different application stages is dynamically regulated and controlled through the valence change of iron ions and the mineralization process of the microorganisms; according to the soil remediation material disclosed by the invention, the miscibility of the soil remediation material and soil and the specific adsorption of the medium-short-chain perfluoroalkyl acid are enhanced, and meanwhile, the conversion of pollutants from an extractable state to a non-extractable state can be promoted, so that the deep fixation of the pollutants is realized, and the secondary release risk after fixation is reduced.

A paint remover composition including (a) tetrahydrofuran (THF) at a sufficient concentration to remove paint; (b) a low vapor pressure (LVP) coupling co-solvent present at an effective amount to maintain miscibility of the single-phase paint remover composition and to remove paint; (c) an amine with a molar volume of <100 cm3 / mol; and (d) water at a concentration of greater than 18 wt % of an overall concentration of the single-phase paint remover composition and the methods of making and using the same.

An example of a fusing agent includes cesium tungsten oxide nanoparticles present in an amount ranging from about 0.01 wt% active to about 1 wt% active, based on a total weight of the fusing agent, and a liquid vehicle. The liquid vehicle includes water and a co-solvent mixture including from about 0.1 wt% active to about 10 wt% active of benzyl alcohol and from about 10 wt% active to about 40 wt% active of a co-solvent to improve miscibility between the benzyl alcohol and the water, where the wt% active of the benzyl alcohol of the co-solvent are each based on the total weight of the liquid vehicle.

The invention belongs to the technical field of composite material preparation, and discloses a green and efficient method for improving miscibility of lignin and PBAT, industrial lignin and an alcohol-based DES solvent are mixed and then subjected to low-temperature heat treatment, DES lignin is obtained after treatment, and the DES lignin and PBAT are subjected to melt blending to prepare a composite material; the composite material is prepared from the following components in parts by weight: 60-90 parts of PBAT and 10-40 parts of DES lignin, and the total part by weight of the DES lignin and PBAT is 100 parts. According to the method, the lignin with specific components is extracted from the industrial lignin by adopting a green and environment-friendly solvent, and the lignin components and the PBAT are subjected to melt blending, so that the miscibility of the industrial lignin and the PBAT is effectively enhanced by adopting a green and environment-friendly reagent, a solubilizer and an auxiliary agent do not need to be added, and the cost is reduced. The obtained lignin / PBAT composite material has higher mechanical strength than the original industrial lignin composite material.

The present invention discloses a glass ceramic metallization UV vacuum plating coating and a preparation process thereof, and relates to the technical field of coatings, the glass ceramic metallization UV vacuum plating coating comprises the following components by mass: 5-20 parts of a 2-functional special modified epoxy acrylate resin, 5-10 parts of a 2-functional aliphatic polyurethane acrylate resin, 2-5 parts of a 6-functional aliphatic polyurethane acrylate resin, 5-15 parts of a polyester acrylic resin, 5-10 parts of an acrylic resin, and the balance of a solvent. The coating is prepared from the following components in parts by weight: 10 to 13 parts of trifunctional acrylate monomer, 2 to 5 parts of monofunctional acrylate monomer, 1 to 3 parts of phosphate, 2 to 5 parts of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 2 parts of benzoin dimethyl ether, 0.1 to 0.3 part of flatting agent, 20 to 30 parts of ethyl acetate, 10 to 20 parts of butyl acetate and 5 to 10 parts of propylene glycol methyl ether acetate. The epoxy acrylate oligomer, the aliphatic polyurethane acrylate and the polyester acrylate which are high in performance and mature in process are mainly selected as main film forming substances and are good in miscibility, a cured paint film is high in compactness and good in developability, and a trifunctional acrylate monomer is matched and is high in reactivity, so that the film forming effect is good. The high crosslinking density ensures that a paint film has enough brightness and fullness so as to ensure the physical and chemical properties of a product, and meanwhile, the constructability such as a leveling effect is improved.

A water-miscible functional fluid includes: a neutral photosensitizer having an isoalloxazine skeleton; and an antioxidant, wherein the antioxidant is a radical scavenger or a peroxide decomposer.

The present invention relates to an alcohol conversion process wherein a homogenous transition metal catalyst is used. The catalyst is kept in solution throughout the whole process, including the reaction in liquid phase, passing several distillation steps and an aqueous extraction step. The catalyst neither precipitates as a solid nor is solved in the wash water due to the use of a solvent or solvent mixture having a high boiling point and a specific miscibility gap regarding the wash water.

The present disclosure relates to a thermally conductive adhesive, a cured product, and a structure. Provided are: a thermally conductive adhesive which exhibits good miscibility between a polyol composition and a polyisocyanate composition, and which has excellent dispersion stability, thermal conductivity, rapid hardenability at room temperature, adhesiveness to an aluminum substrate, and long-term moist heat resistance; a cured product using the adhesive; and a structure. The problem is solved by a thermally conductive adhesive agent comprising: a polyol composition containing a polyol (A), a phosphoric acid compound (B), a dispersant (C), and a thermally conductive filler (D1); and a polyisocyanate composition containing a polyisocyanate (E), a trifunctional or higher epoxy compound (F), and a thermally conductive filler (D2).

The invention relates to a method for separating taurine from a fermentation broth after fermentation of a strain-producing microorganism, comprising the following separation steps in the following order: (i) separating a fermentation supernatant by removing biomass from the fermentation broth; (ii) precipitating taurine from the fermentation supernatant by adding a water-miscible solvent 1 (e.g., ethanol); (iii) separating the taurine precipitate and dissolving it in a solvent 2 (water); (iv) crystallizing the dissolved taurine; and (v) isolating the crystalline taurine and optionally drying, wherein the isolated taurine is at a purity gt; 80% (w / w). In this way, a simple method for separating taurine prepared by fermentation with high purity is provided.

This invention relates to the field of composite fiber preparation technology, and discloses an antibacterial composite fiber and its preparation method, comprising: melting and mixing an antibacterial functional component containing matrix affinity segments and surface migration segments with a matrix polymer component; maintaining their miscibility using high shear transport; triggering phase separation of the antibacterial functional component and its migration to the surface of the fiber nascent body during extrusion to release shear force; and subsequently applying a rapid curing treatment to lock the antibacterial functional component in the surface layer. This invention utilizes the physicochemical properties between components and the control of process timing to achieve active self-assembly of functional components in fiber forming. This method can prepare composite fibers on conventional spinning equipment, achieving targeted enrichment and firm anchoring of functional components to the surface while maintaining the core mechanical properties of the matrix.

The application discloses a plasma cutting protection material, a preparation method and application thereof, and comprises the following components in parts by mass: resin 18-40 parts, toughening agent 0.1-2 parts, hydrolysis aid 0.7-4 parts, and solvent 50-100 parts. In the plasma cutting protection material, the resin is partially hydrolyzed by the hydrolysis aid, so that the hydrophilicity of the resin is enhanced, the miscibility with the solvent is improved, and a complete protection film can be formed on a wafer surface to resist etching of plasma; after the cutting process is completed, the formed protection film has extremely strong water solubility and can be easily removed, so that the cleaning process is simple.

The present invention belongs to the technical field of oil and gas exploration and development, and discloses a molecular dynamics simulation method and system for evaluating the miscibility of carbon dioxide and crude oil, including: constructing an oil and gas component model based on molecular dynamics software and conducting molecular dynamics simulation, recording the total energy of the system and the energy change inside the molecules during the simulation process, and calculating the solubility parameters of each component under different conditions in combination with the calculation formulas of cohesive energy density and solubility parameter. The miscibility between two substances is reflected by the difference in solubility parameters between the components. The present invention can quickly and accurately quantify the oil and gas miscibility under different conditions from the perspective of the energy between components, provide important parameters for evaluating the oil and gas miscibility ability, and has certain guiding significance for the efficient development of oil reservoirs.

The invention relates to a process for preparing an alkoxylated product. The aim of the invention is to provide aromatic polyols for preparing polyurethane-based and polyisocyanurate-based polymers, which ensure good miscibility with the isocyanate component and other components, have a good storage stability and render the end product flameproof. For this purpose, the invention devises a process for preparing an alkoxylated product by reacting bisphenol F with propylene carbonate and / or propylene oxide as propoxylation agent and ethylene carbonate and / or ethylene oxide as ethoxylation agent, the propoxylation agent and the ethoxylation agent being used in a molar ration of 70:30 to 45:55.

The invention relates to a wetting composition comprising (a) from 20 to less than 50 wt % of one or more C10 to C14 alcohol, (b) 25 to 70 wt % of a surfactant selected from a non-ionic, cationic, anionic and amphoteric surfactant, and (c) from 5 to 50 wt % of a polar component comprising at least one selected from (i) water, and (ii) up to 25 wt % of a water-miscible C1-C3 organic solvent, to methods for using the wetting composition, and products and aqueous compositions containing the wetting composition.

Provided is a viscous aqueous composition that has high transparency and high thickening performance, has high emulsifying power for oil-based raw material, or exerts strongly, in the case of being mixed with a water-miscible organic solvent, a viscosity retention effect.A viscous aqueous composition according to an embodiment includes (a) an anion-modified cellulose fiber including anionic groups forming salts with monoamines, and including, as the monoamines, a monoamine (A) having, in an organic conceptual diagram, an organic value of 200 or more and a monoamine (B) having an organic value of less than 200, and (b) water.