58 results about "Miscibility" patented technology

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 a subsea storage system for storing a water miscible storage fluid and methods related thereto.

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.

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.

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.

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.

The utility model discloses a coating gasket capable of improving mutual dissolution of ceramics, which comprises a gasket body, a plurality of ceramic runner plates are arranged on the gasket body, two sides of the ceramic runner plates and the gasket body form main material slurry runners, and ceramic runners are arranged in the ceramic runner plates. A first skiving and a second skiving are arranged on the ceramic runner plate and located on the two sides of the main material slurry runner, and the second skiving is located on one side of the first skiving; and an island part is arranged between the ceramic outlet of the ceramic runner and the second thin part to separate the ceramic outlet and the second thin part. According to the coating gasket, thinning treatment is performed twice at the main material slurry outlet, so that the edge thinning uniformity after the main material slurry is coated is improved, and the problem of mutual dissolution of ceramic and the main material slurry is relieved; and height difference design and island design are carried out on a ceramic outlet of the coating gasket and the second skiving, so that the ceramic slurry is in the lower layer when the ceramic slurry and the main material slurry are in coating contact, and mutual dissolution of the ceramic overflowing into the main material slurry is further improved.

The embodiment of the invention provides an experimental device and method for describing CO2 on-way miscible phase boundary quantitative characterization, and relates to the field of oil displacement experimental equipment. Comprising a heat shrink tube, an upper clamping piece, a lower clamping piece and a pressure measuring point, the upper clamping piece and the lower clamping piece are symmetrically arranged relative to the heat shrink tube, a cavity can be formed after the upper clamping piece and the lower clamping piece are combined, and the shape of the cavity can accommodate the heat shrink tube; and the four pressure measuring points are respectively arranged on the upper clamping piece at equal intervals. A rock core can be clamped through the rock core clamping device, so that the stability during an experiment is ensured; the pressure of each part of the core holder can be detected through the pressure sensor; besides, in the experiment process, the core holder can be detected in real time through a nuclear magnetic resonance detection system, and the crude oil use amount of each position is judged by analyzing nuclear magnetic signals at different positions of the core, so that the miscible phase position of the crude oil under the condition of the purity CO2 and the crude oil physical property is judged.

The application discloses a latent aliphatic amide curing agent, a preparation method thereof and application thereof. The latent aliphatic amide curing agent is obtained through an amidation reaction of an aliphatic amine compound and a formyl carboxylic acid compound. The secondary amine group in the latent curing agent obtained by the application does not react with an epoxy resin at a low temperature due to the influence of steric hindrance, and has latency. The latent modified aliphatic amine curing agent prepared by the application is a flowable liquid at normal temperature, and can be used in combination with a traditional solid powder type latent curing agent, thereby improving the poor miscibility of the solid powder type latent curing agent with the epoxy resin.

A method for synthesizing a zirconium complex includes setting a temperature of a mixed solution at a certain temperature or more to synthesize a zirconium complex, the mixed solution being obtained by mixing: an organic solvent containing an organic substance having water miscibility; a chelating agent solution in which a chelating agent is dissolved; and zirconium dissolved in an acidic solution.

The objective is to provide a method for producing polyurethane foam that exhibits good miscibility between the polyol composition and the polyisocyanate composition, and also has excellent initial reactivity during polyurethane foam formation. [Solution] The present invention relates to a method for producing polyurethane foam by mixing and reacting a polyol composition containing a catalyst comprising a polyol and a metal carboxylate salt with a polyisocyanate composition containing a polyisocyanate, and then foaming and curing the mixture. The production method includes a step of supplying a blowing agent A in a separate system from the polyol composition and the polyisocyanate composition, wherein the blowing agent A comprises a mixture of carbon dioxide and a hydrofluoroolefin with a boiling point of 0°C or lower. The blowing agent A is added to at least one of the polyol composition and the polyisocyanate composition in a ratio of 0.01 to 4 parts by mass per 100 parts by mass of polyol in the polyol composition, and the reaction proceeds after the addition.

This application provides a multilayer polymer composite workpiece, its preparation method, and its application. The preparation method includes the following steps: contacting a first polymer solution with the surface of a second polymer workpiece, whereby the first polymer solution dissolves the surface layer of the second polymer workpiece, with at least a portion of the first polymer solution adhering to the surface layer of the second polymer workpiece, thus obtaining a primary polymer workpiece; removing the primary polymer workpiece, where a portion of the solvent in the first polymer solution leaves the surface layer of the primary polymer workpiece, resulting in a multilayer polymer composite workpiece. The preparation method of the multilayer polymer composite workpiece provided by this application utilizes the miscibility of the first and second polymer materials, adhering the first polymer solution to the surface of the second polymer workpiece to form a multilayer polymer composite workpiece. The process eliminates the need for multilayer material extrusion molding, avoids the influence of temperature differences during processing of the first and second polymers, and is convenient to operate.

The present invention provides a process for preparing tungsten (VI) salts hydrates, the process comprising (a) Preparing a tungsten (VI) salt in an alkaline aqueous solution; (b) Filtering the aqueous solution at a temperature at which the tungsten (VI) salt remains dissolved; (c) Precipitating the tungsten (VI) salt hydrate from the filtrate resulting from step (b); (d) Filtering; (e) Washing the resulting filter cake with a water-miscible solvent; and (f) Drying the washed cake under conditions that allow the removal of the water-miscible solvent. The resulting salts show a level of impurities and solvents so low that they are suitable in the fields of pharmacy, veterinary and dietary.

The present disclosure provides a method for cleaning hair and a hair cleaning composition that includes a particulate cleaning agent in a total amount of about 2% to about 20% by weight based on a total weight of the hair cleaning composition, a plurality of solvents including at least one water-soluble or water-miscible solvent and at least one solvent that is not water-soluble or water-miscible, and a propellant including nitrogen gas. The plurality of solvents may be present in a total amount of about 70% to about 90% by weight based on the total weight of the hair cleaning composition. The propellant may be present in an amount of about 1% to about 5% by weight based on the total weight of the hair cleaning composition. The hair cleaning composition leaves hair wet upon application to the hair and dries within a time of less than 30 seconds.

Described herein is a coating composition comprising: (a) a zwitterionic compound comprising (i) sulfonate-functional groups and (ii) alkoxysilane groups and / or silanol-functional groups; (b) an acid-catalyzed hydrolysis product of an alkoxylsilane, wherein the acid-catalyzed hydrolysis product of an alkoxylsilane comprises at least one (i) (RO)(4-a)Si(OH)a where R is a monovalent hydrocarbon group and a is an integer from 1 to 4; or (ii) an alkanol silicate acid oligomer; (c) a water-miscible organic solvent; and (d) water, along with articles thereof and methods of making the same.

The embodiment of the invention discloses a method and equipment for determining the minimum miscible pressure of oil and gas based on CT scanning and a medium. The method comprises the following steps: under a preset temperature condition, respectively determining first CT values of to-be-detected displacement gas under a plurality of preset pressures; wherein each preset pressure corresponds to one first CT value; determining a second CT value of the oil sample to be detected under the preset temperature condition; if an absolute value of a difference value between the first CT value and the second CT value under each preset pressure is greater than a preset threshold value, respectively determining CT value distribution of the oil sample to be detected under the action of the displacement gas to be detected under a plurality of target pressures; and determining the minimum miscible pressure between the displacement gas to be measured and the oil sample to be measured based on the CT value distribution. According to the technical scheme, the oil-gas two-phase contact process can be imaged based on CT scanning, so that the oil-gas minimum miscible pressure is rapidly determined, and the oil-gas miscible process is visually displayed through CT value distribution.

The invention belongs to the technical field of carbon dioxide miscible-phase oil displacement, and particularly relates to a mixing reducer for carbon dioxide oil displacement as well as a preparation method and application thereof. The mixing reducer comprises a solvent and a solute, and the solute is formed by mixing a zwitterionic surfactant, a zwitterionic nonionic surfactant, an anionic sulfonate surfactant and a gemini nonionic surfactant. The mass ratio of the zwitterionic surfactant to the zwitterionic nonionic surfactant to the anionic sulfonate surfactant to the gemini nonionic surfactant is (3-9): (1-5): (5-12): (4-11). Four different types of surfactants are combined, due to the electrostatic attraction effect between electron groups of selected substances, a compact composite interfacial film of ionic crosslinking and nonionic filling is finally formed, the minimum miscible phase pressure of carbon dioxide in crude oil can be substantially reduced theoretically, and good environmental adaptability is achieved; and dissolution is not easy to occur at the reformation temperature.

The present disclosure is directed to a class of fluorinated copolymers, such as TFE copolymers, that can be dispersed in a liquid carrier including low toxicity liquid solvents, such as Class III Solvents, and that enable the creation of stable dispersions including the fluorinated copolymers dispersed in a liquid carrier including a water miscible organic component and an aqueous component.

Various aspects of this patent document relate to compositions that comprise an anion that is the conjugate base of a hydrophobic molecule that has a pKa, for example, of at least 7 and no greater than 12. These compositions display improved properties when formulated to interact with an organism because the anions carry negative charges that allows them to both dissolve in water-miscible liquids and maximize their surface area. Interaction with an organism results in at least partial conversion of the anion into the hydrophobic molecule after which the hydrophobic molecule partitions out of a water-miscible liquid and into the organism.

The invention relates to a low-permeability reservoir alternate pressure-drive oil extraction method, and belongs to the technical field of low-permeability reservoir exploration and development. The invention provides an oil extraction method for low-permeability reservoir carbon dioxide / water alternate pressure drive injection. Through carbon dioxide / water alternate pressure driving, the formation rapidly reaches the minimum miscible pressure of carbon dioxide and crude oil, micro-cracks are formed in the formation and continuously expanded into complex cracks, the seepage capacity of the reservoir is improved, meanwhile, water and gas alternately form a Jamin effect to control fluidity, water channeling and gas channeling, meanwhile, carbon dioxide is dissolved in water to form an acid corrosion pore channel, and therefore the reservoir seepage capacity is improved. And the reservoir permeability is increased.

This invention provides a liquid crystal compound, a composition, and their applications. The liquid crystal compound has the structure shown in Formula I. The liquid crystal compound and composition of this invention have advantages such as low rotational viscosity, high dielectric anisotropy, good miscibility, and stable performance, and also have the effect of reducing device driving voltage.

The present invention provides highly dispersible non-oxidized carbon nanotube powder comprising: a non-oxidized carbon nanotube bundle that is debundled as carbon nanotube flakes, in which carbon nanotube bundles are densely aggregated, are dispersed and spaced apart at predetermined intervals; and a polymer having a structure of wrapping at least one non-oxidized carbon nanotube bundle while forming a non-covalent bond with the non-oxidized carbon nanotube bundle, wherein, by means of the polymer, the non-oxidized carbon nanotube bundle has miscibility with a wet solvent or compatibility with dry particles, thereby enabling a wet or dry process. The highly dispersible carbon nanotube powder of the present invention is formed such that debundled carbon nanotubes are surrounded by a polymer, and the carbon nanotube bundles have a size of less than 100 nm. Therefore, the highly dispersible carbon nanotube powder has excellent dispersibility in a wet process using an aqueous or organic solvent, can be subjected to a dry process as it is, and provides high electrical conductivity and stability of a thick-film electrode. In addition, the preparation method of the present invention can obtain carbon nanotube powder having high dispersibility in a powder state by dispersing carbon nanotubes in an alcohol-based solvent containing a polymer and freeze-drying same.

Provided are compositions and methods useful in the post-CMP cleaning of microelectronic devices, in particular, devices which contain one or more surfaces comprising hydrophobic carbon or SiC. In general, the compositions comprise a chelating agent; a water-miscible solvent; a reducing agent; and a pH adjustor, wherein the composition has a pH of about 2 to about 13.

An etchant composition offers an etch rate on silicon which is sensitive to a dopant type of the silicon. The etchant composition comprises a water-soluble etchant, one or more water-miscible organic solvents, and one or more surfactants.

An object of the present invention is to provide a polyol composition which, despite using a biomass-derived polyester polyol, has high miscibility with a polyisocyanate and is capable of producing a flexible polyurethane foam having high flexibility and appropriate compression hardness.　 The present invention relates to a polyol composition characterized by including a polyester polyol and a polyether polyol.　The polyester polyol is a reaction product of raw material compounds including:　 a rosin (a) including a resin acid (a1) having a conjugated double bond;　 a biomass-derived fatty acid (b) including an unsaturated fatty acid (b1);　 an α,β-unsaturated carboxylic acid (c);　 an aliphatic saturated polycarboxylic acid (d); and　 a polyol (p) including a diol (p1) having an ether bond.　

The present invention relates to an alcohol conversion process in which a homogeneous transition metal catalyst is used. The catalyst is held in solution throughout the process, including reaction in the liquid phase, by several distillation steps and aqueous extraction steps. Since a solvent or a solvent mixture having a high boiling point and a specific miscibility difference with washing water is used, the catalyst is neither precipitated as a solid nor dissolved in the washing water.

The present disclosure provides a method for cleaning hair and a hair cleaning composition that includes a particulate cleaning agent in a total amount of about 2% to about 20% by weight based on a total weight of the hair cleaning composition, a plurality of solvents including at least one water-soluble or water-miscible solvent and at least one solvent that is not water-soluble or water-miscible, and a propellant including nitrogen gas. The plurality of solvents may be present in a total amount of about 70% to about 90% by weight based on the total weight of the hair cleaning composition. The propellant may be present in an amount of about 1% to about 5% by weight based on the total weight of the hair cleaning composition. The hair cleaning composition leaves hair wet upon application to the hair and dries within a time of less than 30 seconds.

The application discloses a kind of full acetylated polysaccharide derivatives and its preparation method and application, it is related to polysaccharide derivative technical field, by etherification reaction to obtain polysaccharide derivative by alkyl polyglycoside and glycidyl ether;Acetic anhydride and organic weak base catalyst are added to polysaccharide derivative, and full acetylated polysaccharide derivative is obtained by esterification reaction.The obtained full acetylated polysaccharide derivative can be used to reduce CO2 minimum miscibility pressure in offshore oil field.The polysaccharide derivative provided by the application has simple synthesis process, and can be used in oil field exploitation CO2 oil displacement process by changing the number of carbon dioxide group and lipophilic unsaturated hydrocarbon chain length to regulate its molecular activity, to effectively reduce the minimum miscibility pressure in CO2 oil displacement process.

This invention discloses a working solution for synthesizing hydrogen peroxide via the anthraquinone method, comprising a solvent and a working carrier. The solvent comprises aromatic hydrocarbons, diisobutylmethanol, and terephthalamide derivative A. Terephthalamide derivative A, by volume, has C9~C64... 10 The aromatic hydrocarbon comprises 30-95 parts, preferably 60-80 parts; the diisobutylmethanol comprises 2-20 parts, preferably 5-15 parts; and the terephthalamide derivative A comprises 5-30 parts, preferably 5-15 parts; the aromatic hydrocarbon is generally C9-C6. 10 Aromatic hydrocarbons; the working carrier is one or more of anthraquinone and its derivatives. This working solution exhibits excellent solubility and mass transfer capabilities for hydrogen, anthraquinone, and hydroanthraquinone, with a hydrogenation efficiency exceeding 13 g / L. It has low miscibility with water, good extraction and separation effects, and stable physicochemical properties. It can improve the production efficiency of the anthraquinone process for producing hydrogen peroxide and has promising prospects for industrial application.