263 results about "Hydrocarbon solvents" patented technology

The invention relates to a synthetic method of brominated polystyrene with high thermal stability. The synthetic method comprises the following steps: S01, dissolving polystyrene in a halogenated hydrocarbon solvent in a reaction bottle to obtain a polystyrene solution; s02, adding aluminum chloride and bromine into another reaction bottle; s03, introducing hydrogen bromide gas into the reaction bottle in S02, and starting stirring to react at room temperature; s04, after the reaction in the step S03 is finished, reducing the temperature of the polystyrene solution in the step S01 to the reaction temperature, starting stirring, adding a free radical inhibitor, and dropwise adding the bromine and catalyst mixed solution obtained by the reaction in the step S03 into the polystyrene solution; s05, after dropwise adding is finished, adjusting the temperature to the heat preservation temperature, and carrying out heat preservation reaction for a period of time; and S06, after the heat preservation is finished, carrying out post-treatment to obtain the brominated polystyrene. According to the synthetic method of brominated polystyrene, the halogenation phenomenon of a main chain can be inhibited, the use of a catalyst is reduced, and the thermal stability of brominated polystyrene is improved.

A method for producing hollow resin particles, the method comprising a mixture liquid preparation step, a suspension preparation step, a polymerization step, and a solvent removal step; wherein a content of a saturated hydrocarbon solvent is 50% by mass or more with respect to 100% by mass of a total amount of a hydrocarbon solvent; wherein a polymerization initiator is an oil-soluble polymerization initiator; and wherein, in the mixture liquid, a crosslinkable monomer contains a tri- or higher functional crosslinkable monomer, and with respect to 100 parts by mass of a total amount of the polymerizable monomer, a total content of the crosslinkable monomer is 80 to 98 parts by mass, a content of the tri- or higher functional crosslinkable monomer is from 10 parts by mass to 98 parts by mass, and a content of the hydrocarbon solvent is from 300 parts by mass to 1500 parts by mass.

The invention relates to the technical field of batteries, in particular to a composite electrolyte, a lithium metal battery and application of the lithium metal battery. The invention relates to a composite electrolyte which comprises a fluorinated cyclic ether solvent, an alkane solvent, LiPF6 and LiTFSI, the carbon atom number Ra of the fluorinated cyclic ether solvent skeleton is more than or equal to 3 and less than or equal to 6; the volume ratio A of the fluorinated cyclic ether solvent is greater than or equal to 50% and smaller than or equal to Alt; 100%; the volume ratio B of the alkane solvent meets 0 lt; b < = 50%; the structural tortuosity Rb of the hydrocarbon solvent satisfies 1.5 < Rb < = 3; the ratio of the molar concentration Rc of LiPF6 to the molar concentration Rd of LiTFSI is more than 0 and less than or equal to 1. The composite electrolyte provided by the invention has excellent comprehensive physical and chemical properties, especially low-temperature performance, and can improve the cycle performance and rate capability of the battery.

The invention discloses a low-temperature curing PVC plastisol composition for a vehicle and a preparation method of the low-temperature curing PVC plastisol composition. The invention relates to a low-temperature curing PVC plastisol composition for vehicles, which is prepared from the following raw materials in parts by weight. Comprising 5 to 15 parts of polyvinyl chloride-vinyl acetate copolymer resin, 5 to 15 parts of homopolymerized PVC paste resin, 1 to 10 parts of blended PVC paste resin, 30 to 40 parts of a compound plasticizer, 1 to 10 parts of a hydrocarbon solvent, 0.5 to 1.5 parts of terminated polyurethane, 0.5 to 2 parts of polyamide, 0.5 to 1 part of a thixotropic agent, 30 to 45 parts of an inorganic filler, 1 to 5 parts of a stabilizer and 1 to 5 parts of a moisture absorbent. The compound plasticizer is prepared from diethylene glycol dibenzoate, isodecyl benzoate and diisononyl phthalate. The PVC plastisol composition disclosed by the invention is a low-temperature and short-time curing material, and can be cured under the conditions that the baking temperature is 125 DEG C and the baking time is 20 minutes.

Non-aqueous membrane emulsion methods for producing polymeric and polymer-coated microparticles are provided. Some embodiments provide methods for producing a sustained release or controlled release microparticle by combining micronized protein powder and a polymer into a hydrocarbon solvent to form a non-aqueous first solution, agitating the first non-aqueous solution to form a suspension, feeding the suspension into a dispersion pump, wherein the suspension is infused through a porous membrane into a continuous phase comprising a fluorocarbon liquid and a fluorosurfactant to form a hydrocarbon-in-fluorocarbon emulsion. The hydrocarbon solvent, the fluorocarbon liquid, and the fluorosurfactant are removed, and the microparticles are collected.

The present disclosure relates to a method to obtain a decellularized dermal matrix from a rabbit, hare or beaver skin graft, the method comprising the following steps: degreasing the skin graft using a hydrocarbon solvent, perchloroethylene, modified alcohols or supercritical carbon dioxide, or combinations thereof; liming the degreased graft by immersing the graft in a solution comprising calcium hydroxide, sodium hydroxide, hydrogen peroxide, or mixtures thereof; fleshing the skin graft; optionally, deliming the skin graft; incubating the skin graft in a solution of ethylenediamine tetraacetic acid; treating the skin graft with a detergent solution for 30 minutes to 3 hours to obtain the decellularized dermal matrix. The disclosure also relates to a decellularized dermal matrix obtained by the method described; to a composition comprising said decellularized cell matrix for use in medicine or veterinary medicine; and to dermo-epidermal skin substitute scaffold comprising the disclosed decellularized dermal matrix.

The invention provides a method for preparing polyarylester by interfacial polycondensation, which comprises the following steps: dissolving a diphenol monomer in an alkali solution to prepare a bisphenol salt solution, and dissolving an interfacial catalyst in a bisphenol salt water phase to obtain a water phase; dissolving aromatic dicarboxylic acid acyl chloride in a halogenated hydrocarbon solvent to obtain an organic phase; s2, slowly adding the organic phase obtained in the step S1 into the water phase in a stirring state within 10-60 minutes, and continuously reacting for 10-120 minutes in the stirring state; the product is separated out in the form of precipitate, the precipitated precipitate absorbs the halogenated hydrocarbon solvent, so that a liquid phase main body is water, a solid phase is a muddy product containing the halogenated hydrocarbon solvent, and the obtained muddy product is filtered, washed and dried to obtain a powdery product. According to the method disclosed by the invention, the polymer is directly precipitated by controlling the solute concentration and the mixing ratio, so that the efficient in-situ removal of the solvent is realized, the solvent is directly separated from water through simple filtration, and'zero separation, zero crushing and zero distillation 'is realized.

Provided is a method for efficiently producing a sulfide solid electrolyte which has high ionic conductivity and in which an increase of particle diameters and a spread of particle size distribution are suppressed, the method including mixing, in a first solvent, a raw material-containing substance that contains a plurality of raw materials each containing at least one atom selected from a lithium atom, a phosphorus atom, a sulfur atom, and a halogen atom to obtain a solution containing an electrolyte precursor, removing the solvent from the solution to obtain the electrolyte precursor, bringing the electrolyte precursor into contact with a second solvent, and subsequently heating the mixture, wherein the second solvent differs from the first solvent and is a hydrocarbon solvent.

The invention discloses low-ash polypropylene resin and a preparation method thereof. The preparation method comprises the following steps: polymerizing propylene serving as a raw material to obtain a polypropylene crude product; and purifying the obtained polypropylene crude product to obtain the low-ash polypropylene resin. The purification comprises the following steps: preparing a dried polypropylene crude product into slurry by using a composite solvent, and stirring for purification; then carrying out solid-liquid separation on the slurry to obtain wet polypropylene powder, and drying to obtain low-ash polypropylene resin powder; the composite solvent comprises a hydrocarbon solvent and a difunctional group additive, and the structure of the difunctional group additive is # imgabs0, in the formula, R1 is a C1-5 alkane group, R2 is a C1-3 alkane group, and R3 is a C1-4 alkane group. According to the invention, a composite solvent of a hydrocarbon solvent and a difunctional group additive is used to simply wash and purify a polypropylene crude product once, so that the polypropylene resin with low ash content can be obtained.

A method for preparing 1,2-propanediol involves continuously reacting propene with hydrogen peroxide in the presence of a catalyst mixture, containing a quaternary ammonium salt and a polytungstophosphate, in a liquid reaction mixture containing an aqueous phase with a maximum apparent pH of 6 and an organic phase containing an alkylaromatic hydrocarbon solvent. The method then involves withdrawing the liquid reaction mixture from the reaction and adding a water-soluble sulfate salt or sulfuric acid to provide a mixture containing from 500 to 10,000 mg / kg of sulfate ions in the aqueous phase. The method further involves separating the mixture obtained into an aqueous phase (Pa) containing 1,2-propanediol and an organic phase (Po), recycling at least a part of the organic phase (Po) to the reaction, and recovering 1,2-propanediol from the aqueous phase (Pa). The method allows for extended operation of the reaction with little loss of tungsten and phase transfer catalyst.

Provided is a method for producing a sulfide solid electrolyte capable of efficiently producing a sulfide solid electrolyte having high ionic conductivity in which an increase in particle diameter and an enlargement in particle size distribution are suppressed, the method comprising: mixing raw material-containing substances containing a plurality of raw materials in a first solvent to obtain a solution containing an electrolyte precursor; the raw material comprises at least one atom selected from a lithium atom, a phosphorus atom, a sulfur atom and a halogen atom; removing the solvent from the solution to obtain an electrolyte precursor; bringing the electrolyte precursor into contact with a second solvent; the second solvent is different from the first solvent and is a hydrocarbon solvent.

The invention discloses a preparation method of a star-shaped multi-arm HSD viscosity index improver with a core-shell structure, and the preparation method comprises the following steps: uniformly mixing a non-polar hydrocarbon solvent, isoprene and butadiene, adding a polarity regulator, heating, adding an alkyl lithium initiator, and reacting to obtain a polymer shell; then adding a mixed solution of styrene, a coupling agent and a solvent at one time, and continuously reacting to obtain a star-shaped multi-arm polymer with a core-shell structure; the star-shaped multi-arm polymer with the core-shell structure is directly transferred to a hydrogenation kettle, alcohol termination is not needed, then a hydrogenation catalyst is added, heating is performed, hydrogen is introduced for a hydrogenation reaction, catalyst metal ions are removed, a solution is flocculated and dried, and the star-shaped multi-arm HSD viscosity index improver with the core-shell structure is obtained. According to the star-shaped multi-arm HSD viscosity index improver with the core-shell structure, on the premise that the shearing stability of an oil product is kept, the oil product has higher thickening capacity, and the development requirements of high-end oil products and long-life oil products are met.

The invention discloses a solvent type cleaning agent for replacing dichloromethane, which is characterized by comprising the following components in parts by weight: 70-90 parts of hydrocarbon solvent D40; 0 to 15 parts of chlorinated methoxy fatty acid methyl ester; and 0-15 parts of butanediol diacetate, wherein the number of parts of the chloro-methoxy fatty acid methyl ester or butanediol diacetate is not 0 at the same time. Compared with the existing dichloromethane cleaning agent, the cleaning agent disclosed by the invention has the advantages of low toxicity, low volatilization amount, no corrosivity, low VOC (Volatile Organic Compounds), certain anti-rust capability and no key control pollutant CFC113, carbon tetrachloride and trichloroethylene.

The invention discloses a hydrocarbon cleaning machine intelligent control system and method, and relates to the technical field of hydrocarbon cleaning machine intelligent control, and the method comprises the steps: detecting the weight and volume of a to-be-cleaned workpiece, roughly cleaning the surface tension, viscosity and particulate matter concentration of a hydrocarbon solvent in a cleaning tank, and calculating an initial cleaning parameter and an initial cleaning threshold value; determining an initial cleaning strategy of the to-be-cleaned workpiece; the workpiece to be cleaned is put into the hydrocarbon solvent, the surface tension, the viscosity and the particulate matter concentration of the hydrocarbon solvent in the rough cleaning process are detected, the initial cleaning change coefficient of the workpiece to be cleaned is calculated, the cleaning coefficient and the cleaning adjustment threshold value are calculated and adjusted, whether cleaning parameter adjustment needs to be carried out or not is judged, and the cleaning parameters can be adjusted in time in the workpiece cleaning process. Therefore, it is ensured that the cleaning process is conducted under the optimal condition, and the cleaning efficiency is improved.

The invention relates to polyamide synthesized by carbon dioxide and a preparation method thereof, and belongs to the technical field of polymer synthesis. The technical problems of long reaction time, low yield, poor product performance and the like in the existing technology for converting the carbon dioxide into the polymer by utilizing the Ugi multi-component reaction are solved. The preparation method comprises the following steps: in a halogenated hydrocarbon solvent, pre-polymerizing primary diamine and aryl dialdehyde, adding alcohols, an organic base catalyst, CO2 and mono-functional group isonitrile, reacting to obtain a reactant, and purifying the reactant to obtain polyamide. The preparation method is mild in reaction condition, short in reaction time and high in yield, the use of di-isonitrile is avoided, the cost can be reduced, and the prepared polyamide has excellent solvent resistance, is only slowly dissolved in dichloromethane and trichloromethane and is insoluble in other solvents.

The invention relates to a solvent-resistant polyimide film and a preparation method and application thereof, and the preparation method comprises the following steps: (1) reacting a diamine monomer with a dianhydride monomer in the presence of a catalyst and a first solvent to obtain polyimide; the diamine monomer comprises a diamine monomer containing carboxyl; (2) dissolving polyimide in a second solvent to form a first polyimide solution, performing phase inversion treatment after film formation to obtain an intermediate film, and treating the intermediate film in an organic solution containing metal ions to obtain a supporting base film; and (3) dissolving the polyimide in a third solvent to form a second polyimide solution, coating the second polyimide solution on the supporting base membrane, drying, and treating with an organic solution containing metal ions to obtain the solvent-resistant microporous polyimide film. The polyimide film prepared by the method has excellent solvent resistance, good hydrophobicity and good permeability to hydrocarbon solvents, and has a good application prospect in the field of light crude oil separation.

A borate compound-containing composition soluble in hydrocarbon solvents. A composition containing base A, or a compound having a total carbon number of not less than 8 and represented by the formula (5):wherein R and R′ are each independently an optionally substituted C1-30 alkyl group, an optionally substituted C3-15 cycloalkyl group, or an optionally substituted C6-14 aryl group; anda borate compound represented by the following formula (1):wherein R1, R2, R3 and R4 are each independently a C6-14 aryl group substituted by one or more fluorine atoms or fluoro C1-4 alkyl groups; and[A-H]+ is a base A-derived cation. A method for producing a polymer, by polymerizing at least one kind of monomer selected from the group consisting of olefins and dienes by using the composition A as a cocatalyst.

A method of equipment decontamination may include: introducing a cleaning stream comprising hydrogen and a solvent comprising a fatty acid methyl ester and an oxygenated solvent, or alternatively comprising a carrier fluid and a hydrocarbon solvent, into the equipment; and introducing a stream comprising nitrogen into the equipment, wherein the equipment comprises deposits and other contaminants.

Embodiments of a dual reactor solution polymerization process include: introducing a first feed comprising an ethylene monomer, optionally hydrogen, optionally a C3-C12 alpha-olefin comonomer, and a hydrocarbon solvent into a first polymerization reactor to produce a first reactor product comprising an ethylene-based polymer via solution polymerization at a temperature of 100 DEG C to 225 DEG C; and introducing the first reactor product and a two-phase second feed comprising an ethylene monomer, a hydrocarbon solvent, optionally hydrogen, and optionally a C3-C12 alpha-olefin comonomer to a second polymerization reactor to produce an ethylene-based polymer via solution polymerization, wherein the weight ratio of the sum of hydrocarbon solvent plus comonomer in the two-phase second feed to ethylene monomer is 0.1 to 2.0.

The invention belongs to the technical field of automotive diesel additives, and particularly relates to a power boosting type diesel additive as well as a preparation method and application thereof. The additive contains 10-30 g / L of an organic lanthanum peroxide component in terms of La, and is a solution prepared from lanthanum carbonate or lanthanum oxide, acetylacetone, hydrogen peroxide and an inert and hydrophobic hydrocarbon solvent; in the preparation raw materials, the molar ratio of La to acetylacetone to H2O2 is 1: (3.0-3.2): (3.3-3.5); the hydrocarbon solvent is composed of a solvent A and a solvent B, the normal-pressure boiling point of the solvent A is 75-100 DEG C and accounts for 20-40 wt% of the total amount of the hydrocarbon solvent, and the normal-pressure distillation range of the solvent B is 70-300 DEG C. The additive is suitable for being added into vehicle diesel oil of a gas station, the adding amount is 0.05-2 v per thousand, the power performance of a diesel oil vehicle can be remarkably improved, and the additive has a certain application prospect.

This application discloses an integrated cleaning device, relating to the field of cleaning equipment, comprising a frame; a loading rack installed at one end of the frame; a unloading rack installed at the other end of the frame; a transfer mechanism installed on the frame and used for transferring optical components; a hydrocarbon cleaning unit installed on the frame and adjacent to the loading rack, the hydrocarbon cleaning unit being used to clean optical components using hydrocarbon solvents; and an HFE cleaning unit installed on the frame and adjacent to the unloading rack. This application reduces the footprint by integrating the hydrocarbon cleaning unit and the HFE cleaning unit onto the frame; it reduces mutual interference and improves safety by physically isolating the hydrocarbon cleaning unit and the HFE cleaning unit with partitions; and it prevents large amounts of hydrocarbon solvent from entering the next process by using air knife purging, greatly reducing the contamination load of subsequent HFE solvents and minimizing cross-contamination.

The present invention relates to the technical field of battery component processing, and provides a Dyn hold cleaner for battery covers and a cleaning method. The cleaner is composed of components in the following mass percentages: 40% - 65% of a hydrocarbon solvent, 3% - 15% of an organic base, and 20% - 50% of a co-solvent. The hydrocarbon solvent is one of synthetic isoparaffins, dearomatized fluids, Fischer-Tropsch synthetic paraffins, isoparaffins, or refined C11. The organic base is one or more of monoethanolamine, triethanolamine, isopropanolamine, diethylene glycolamine, and 2-amino-2-methyl-1-propanol. The present invention can effectively remove various dirt such as stamping oil residues on the surface of the battery cover. After cleaning, there is no white spot residue on the cover surface, the cleaner does not corrode the workpiece, and there is no adverse effect on the appearance of the workpiece; the initial Dyn value after cleaning is greater than 54 mN / m, and the Dyn value remains undiminished after 15 days of storage. Fundamentally, the problem of Dyn attenuation on the surface of the workpiece during storage and turnover is solved.

The present disclosure describes compositions for restoring and protecting vinyl, rubber, and plastic (VRP) surfaces, wherein the compositions include at least two silicone fluids. In embodiments, the compositions include a first silicone fluid and a second silicone fluid, one or more mineral oils, one or more rheology modifiers, one or more hydrocarbon solvents, water, and optionally one or more preservatives. The present disclosure also describes a method of preparing the composition, wherein the method includes slowly adding the one or more hydrocarbon solvents to the water that is moving at a slow speed to form a solution, continuing mixing, and adding the one or more rheology modifiers to the solution and mixing, continuing mixing and adding to the solution in the following order: the one or more mineral oils; the first silicone fluid, the silicone second fluid, and optionally adding the one or more preservatives and continue mixing.

The application discloses a cleaning method of a cauldron for preparing aluminum trihydride, which comprises the following steps: (1) under an inert gas atmosphere, adding a polyhalogenated hydrocarbon solvent and an inorganic salt abrasive into the cauldron, and stirring intensively to grind off the wall-bonding substances in the cauldron; (2) emptying the cauldron, and slowly feeding a buffer solution into the cauldron through a bottom pipe in a vacuum-extraction mode, so that the buffer solution is immersed into the cauldron from the bottom of the cauldron; and (3) sequentially using dilute alkali, dilute acid and water to completely immerse the wall-bonding layer, and then washing the cauldron with water. The method can safely and effectively remove the wall-bonding substances on the cauldron.

A method including polymerizing a conjugated diene-based monomer, or the conjugated diene-based monomer and an aromatic vinyl-based monomer in a hydrocarbon solvent to prepare an active polymer; and reacting or coupling the active polymer with a modifier to prepare a modified conjugated diene-based polymer. Polymerization is initiated in the presence of a first polymerization initiator, and the polymerization reaction is performed by injecting a second polymerization initiator in at least one installment at a point where a polymerization conversion ratio is from 50% to 95%.

This invention belongs to the field of compound synthesis technology and provides a method for preparing lithium aluminum hydride. The method includes the following steps: mixing an organic solution of aluminum trichloride and an organic solution of lithium hydride to perform a displacement reaction, obtaining a mixture of lithium aluminum hydride; mixing the lithium aluminum hydride mixture with a hydrocarbon solvent and performing solid-liquid separation to obtain lithium aluminum hydride. Lithium aluminum hydride is insoluble in hydrocarbon solvents and precipitates out, further improving the yield of lithium aluminum hydride; simultaneously, unreacted aluminum trichloride dissolves in the hydrocarbon solvent, thereby increasing the main content of lithium aluminum hydride. The preparation process of this invention has high yield, stable product content, and is easy to implement and industrialize.

A low odor liquid coating compositions coating composition that includes: 10 wt % to 95% wt % based upon the total weight of the solids in the coating composition of a mono-functional (meth)acrylate monomer that has a boiling point of 120 C or more at atmospheric pressure; 0.2 wt % to 5 wt % based upon the total weight of the solids in the coating composition of an oleophilic compound selected from a wax, an oil, or combination thereof; 1 pbw to 20 pbw based upon 100 parts by weight of the total weight of the solids in the coating composition of a hydrocarbon solvent, halocarbon solvent, or a combination thereof; and a multifunctional crosslinker selected from a multi-functional (meth)acrylate monomer, a multi-functional oligomer, and combinations thereof with the proviso that the multi-functional (meth)acrylate monomer does not exceed 5 wt % based upon the total weight of the solids in the coating composition.

The application provides application of a hydrocarbon solvent in a full solid battery, a positive electrode sheet, a negative electrode sheet and a full solid battery. The full solid battery comprises a binder, the binder comprises a polyolefin binder and / or a styrene block binder, and the hydrocarbon solvent comprises paraffin and naphthene; the flash point of the hydrocarbon solvent is greater than or equal to 60 DEG C, and the distillation range of the hydrocarbon solvent is greater than or equal to 200 DEG C. The hydrocarbon solvent solves the problems of poor solubility and dispersibility of the polyolefin binder or the styrene block binder in the solvent, easy gelation, floating of the binder and reaction metamorphosis of sulfides in a processing process.

A room-temperature flowable dispersion of syndiotactic polybutadiene particles in an aqueous mixture containing at least one emulsifier. The dispersion reduces the need for temperature control equipment for storing or transporting the dispersion during processing. The syndiotactic polybutadiene particles in the dispersion are formed from a syndiotactic polybutadiene cement containing a hydrocarbon solvent obtained from a polymerization process, and the hydrocarbon solvent is subsequently removed from the dispersion by evaporation.

The application discloses a combustion-supporting and corrosion-preventing type colloidal magnesium-based heavy oil additive and a preparation method thereof. The heavy oil additive is prepared from the following components in parts by weight: magnesium oxide 50-80 parts, bentonite 10-15 parts, lime powder 5-10 parts, nano silicon dioxide 10-15 parts, basic copper chloride 5-10 parts, diaspore powder 10-15 parts, sodium dodecyl benzene sulfonate 2-8 parts, hydrocarbon solvent 2-8 parts, combustion-supporting dispersant 2-8 parts, and water 80-100 parts. The additive can inhibit the combustion of sulfur in the heavy oil to generate sulfur oxides, low-temperature sulfur corrosion and the synergistic corrosion of HCl. In the low-temperature section, the basic components such as lime powder react with HCl to generate salt compounds, neutralize the acidic substances in the flue gas, and significantly increase the pH value to above 8, thereby preventing the low-temperature dew point corrosion of the tail heating surface.