109 results about "Diethylene glycol dimethyl ether" patented technology

An electrolyte for rechargeable batteries with a negative electrode of lithium or lithium containing alloys comprising: one or several non-aqueous organic solvents, one or several lithium salts and one or several additives increasing the cycle life of the lithium electrode. The electrolyte solution may comprise one or several solvents selected from the group comprising: tetrahydrofurane, 2-methyltetrahydrofurane, dimethylcarbonate, diethylcarbonate, ethylmethylcarbonate, methylpropylcarbonate, methylpropylpropyonate, ethylpropylpropyonate, methylacetate, ethylacetate, propylacetate, dimetoxyethane, 1,3-dioxalane, diglyme (2-methoxyethil ether), tetraglyme, ethylenecarbonate, propylencarbonate, γ-butyrolactone, and sulfolane. The electrolyte solution may further comprise at least one salt or several salts selected from the group consisting of lithium hexafluorophosphate (LiPF₆), lithium hexafluoroarsenate (LiAsF₆), lithium perchlorate (LiClO₄), lithium sulfonylimid trifluoromethane (LiN(CF₃SO₂)₂)) and lithium trifluorosulfonate (CF₃SO₃Li) or other lithium salts or salts of another alkali metal or a mixture thereof. Also disclosed is an electrochemical cell or battery with an anode of metallic lithium or a lithium-containing alloy, and such an electrolyte.

A diode-addressed color display comprising an UV-diode and a phosphor of the general formula LnL3X2, wherein Ln=Eu3+, Tb3+, Tm3+, Dys3+, Sm3+, L=4-R-4'-benzophenone carboxylic acid, wherein R=phenyl, benzyl, CH3, CF3, C2H5, F, Cl, OCH3, CH3CO; 4-R-4'-benzophenone acetylacetonate, wherein R=phenyl, benzyl, CH3, CF3, C2H5, F, Cl, OCH3, CH3CO; 4-acetophenone carboxylic acid, 4-trifluoroacetophenone carboxylic acid, 4-acetophenone acetylacetonate or 4-trifluoroacetophenone acetylacetonate and X=+E,fra 1/2+EE phenanthroline, +E,fra 1/2+EE diphenyl phenanthroline, +E,fra 1/2+EE 4-Cl-phenanthroline, +E,fra 1/2+EE bipyridine, +E,fra 1/2+EE ethylenediamine, triphenyl phosphineoxide, trimethyl phosphineoxide, triethyl phosphineoxide, +E,fra 1/2+EE diethylene glycol-dimethylether (diglyme) or ethanol.

The invention discloses a preparation method for 1,4-cyclohexane diformic acid (CHDA) and diester thereof. In particular, 2-cyclohexene-1,4-dicarboxylic acid is subjected to catalytic hydrogenation to prepare the CHDA or CHDA diester under the effect of a supported metal catalyst with hydrogen under certain pressure fed, a solvent being polar or non-polar, wherein the polar solvent may be water, methanol, ethanol, n-propanol, isopropanol, n-butanol, glycol dimethyl ether and diethylene glycol dimethyl ether, and the non-polar solvent may be one or more than two selected from n-hexane, n-heptane, n-octane, cyclohexane, benzene and toluene. A metal active component of the supported metal catalyst is non-noble metal and/or noble metal. A carrier of the supported metal catalyst may be one or more than two selected from a carbon carrier, a nano metal oxide, a nano non-metal oxide and a molecular sieve. When the conversion rate of the 2-cyclohexene-1,4-diformic acid is more than 98%, the selectivity of the CHDA or CHDA diester can reach 96%.

The invention discloses a superlow-temperature lithium ion battery electrolyte. The electrolyte is prepared from the following raw materials of organic solvents, lithium salt and a film forming additive, wherein the organic solvents comprise carbon disulfide, ethyl butyrate, diglyme and N,N-dimethylformamide; the lithium salt is lithium tetrafluoroborate; the film forming additive consists of vinylene carbonate and any one of ethylene sulfate, lithium difluorophosphate and imidodisulfuryl fluoride. Compared with t traditional carbonate solvents, the electrolyte has the advantages that the melting point of the used organic solvent is very low, and the higher ion conductivity is still maintained at superlow temperature of -40 DEG C; the additive forms a film at the surface of a cathode, andcan form a stable SEI (solid electrolyte interface) film with low impedance, so as to quickly intercalate and de-intercalate the lithium ions at low temperature. The invention also discloses the lithium ion battery using the electrolyte. The lithium ion battery can reach excellent low-temperature discharge and cycle properties under the superlow-temperature environment.

A method of controlling the vinyl content in polybutadiene of elastomers relates to the polymer synthesis field. Symmetric Lewis base has the following problem in the application that the relatively high content of regulator will reduce the rate of polymerization and impact further polymerization as well as the coupling process after the polymerization. The invention introduces an asymmetric ethers-polar compound in a regulator system to form a composite regulation system with symmetrical ethers or amines compound, wherein, the asymmetric ethers compound is alkylte trahydrofurruryl ethers, and the other polar reagent can be symmetrical ethers or amines compound, such as N,n,n',n',n-Pentamethyldiethylenetriamine (hereinafter referred to as PMEDTA), diethylene glycol dimethyl ether (hereinafter referred to as 2G), triethylene glycol dimethyl ether (hereinafter referred to as 3G). The method of the invention can increase the content of vinyl, without reducing the rate of polymerization; the coupling efficiency of the coupling reaction can reach 90%.

The invention discloses an electrolyte used for a Li-S battery, comprising an electrolyte membrane and electrolyte, wherein the electrolyte membrane takes PVDF (polyvinylidene fluoride) or PVDF-HFP (polyvinylidene fluoride-hexafluoropropylene) as a main chain, the side chain of the main chain comprises one or more than one of lithium sulphonate group, lithium carboxylate group and lithium amide group; and the electrolyte is mixed solution containing at least one of 1,3-dioxolame, dimethoxyethane, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and sulfolane. The electrolyte, an anode and a cathode form the Li-S battery in the invention. The method for preparing the electrolyte membrane contained in the electrolyte comprises the following steps: firstly dissolving PVDF or PVDF-HFP, heating and stirring, and casting to obtain a membrane; treating the membrane with KOH/ethyl alcohol solution, then transferring the membrane into mixed solution of graft monomer/tetrahydrofuran, and adding formylamine peroxide for grafting; and cleaning the grafted membrane and soaking to obtain the electrolyte membrane. The electrolyte membrane in the invention is simple to prepare,the cost is low, the loss of active substance can be reduced, and the cycle life of the battery can be prolonged.

The present invention discloses a production process of a waterborne polyurethane coating material having a high tension force coating film. According to the production process, polyether, polyester polyol and isocyanate are adopted as raw materials, a hydrophilic chain extender is gradually added during the reaction process, an ethylene glycol dimethyl ether-acetone mixed solvent or diethylene glycol dimethyl ether-acetone mixed solvent is added when the reaction achieves the theoretical NCO% value, and finally salification, emulsifying and chain extending are performed to obtain the product. According to the present invention, the hydrophilic groups in the obtained product of the present invention are broadly distributed in the molecular chain compared with the product obtained through the traditional process, wherein the hydrophilic groups are not only distributed in the prepolymer chain end and also distributed in the chain so as to further improve the hydrophilic efficiency of the hydrophilic groups; and according to the structural characteristics of the prepolymer molecular chain, the two solvent systems are selected, such that the elongation and the tension force of the waterborne polyurethane coating after the film forming can be significantly improved with the solvent systems, the compatibility of the solvent system and the aqueous emulsion is good, and the stability is high.

The invention discloses methanol gasoline for a vehicle and a preparation method thereof. The methanol gasoline is prepared from the following raw materials in parts by weight: 60-70 parts of methanol, 15-25 parts of 90# gasoline, 10-15 parts of dipropylene glycol methyl ether acetate, 5-10 parts of tert amyl methyl ether, 5-10 parts of dimethyl carbonate, 4-8 parts of diethylene glycol dimethyl ether, 3-6 parts of 2,2-dimethoxypropane, 1-2 parts of ferrocene, 0.5-1.5 parts of methyl cyclopentadiene tricarbonyl manganese, 0.8-1.4 parts of 2,5-di-tert-butyl hydroquinone, 0.4-0.8 part of glycerol monolaurate, 0.5-1 part of sodium petroleum sulfonate, 0.3-0.6 part of N-Polyoxyethylated-N-tallow-alkylamine, 5-10 parts of wood tar, 3-6 parts of isopropanol, 2.5-4.5 parts of fish meal, 2-3 parts of bone meal, 1-2 parts of stearic acid and 0.5-1 part of urotropine. The methanol gasoline disclosed by the invention is favorable in combustion characteristic, high in utilization ratio, favorable in anti-detonating quality, low in corrosivity, high in safety and reliability, energy-saving and environment-friendly, can be used instead of any of 90#, 93#, 97# and 98# gasoline for a vehicle, is novel environment-friendly alternative fuel, and can reduce pollutant emission and carbon emission; and the combustion emission of the methanol gasoline meets the standards in Europe and America. The methanol gasoline has excellent economic benefits and far-reaching social benefits.

The invention relates to a flame-retarding, acid-alkali-resisting wear-resisting fire hose material. The flame-retarding, acid-alkali-resisting wear-resisting fire hose material is prepared from rosin resin, p-tert-octyl phenolformaldehyde resin, amino resin, polyethylene wax emulsion, tall oil fatty acid, butyl acetate, isoamyl propionate, diethylene glycol dimethyl ether, dimethyl fumarate, sodium perborate, imidazoline, ammonium fluosilicate, guanidine phosphate powder, phenyl triethoxy silane, sodium pyrophosphate, chromium oxide, chromium chloride, menthol, barium chromate powder, ferrous orthophosphate, ethylenedioxydiethyl bis, tricresol phosphate ester, decabromodiphenyl ether, nanometer magnesium hydroxide, lignin, morpholine, polyoxyethylene polyoxy propyl alcohol amine ether, alkyl polyglucoside, propylamine, sodium ricinoleic acid. The product has excellent flame retardance, acid-base resistance, anti-mildew and anti-microbial performances, and the product performance is improved.

A method of synthesizing multilayer heterostructures including an inorganic oxide layer residing on a solid substrate is described. Exemplary embodiments include producing an inorganic oxide layer on a solid substrate by a liquid coating process under relatively mild conditions. The relatively mild conditions include temperatures below 225° C. and pressures above 9.4 mb. In an exemplary embodiment, a solution of diethyl aluminum ethoxide in anhydrous diglyme is applied to a flexible solid substrate by slot-die coating at ambient atmospheric pressure, and the diglyme removed by evaporation. An AlO_x layer is formed by subjecting material remaining on the solid substrate to a relatively mild oven temperature of approximately 150° C. The resulting AlO_x layer exhibits relatively high light transmittance and relatively low vapor transmission rates for water. An exemplary embodiment of a flexible solid substrate is polyethylene napthalate (PEN). The PEN is not substantially adversely affected by exposure to 150° C.

The invention discloses a preparation method of a soluble and low-temperature rapid imidization polyimide film, and belongs to the technical field of polyimide film preparation. The method comprises the following steps: a polar aprotic organic solvent with a boiling point lower than 200 DEG C is adopted as a solvent, and the polar aprotic organic solvent comprises one or more of diethylene glycol dimethyl ether, diethylene glycol diethyl ether, N,N-dimethyl acetamide, N,N-dimethyl formamide and dimethyl sulfoxide. According to the present invention, the polyimide film can be rapidly prepared through the imidization at the temperature of less than 200 DEG C, and the imidization process does not require the use of any catalyst, such that the important practical significance is provided for the production efficiency improving and the energy consumption reducing.

The invention provides an application of a NiPS3 nanosheet in a sodium ion battery and the sodium ion battery. The NiPS3 nanosheet is used as a negative electrode material of the sodium ion battery orone of negative electrode materials, and diethylene glycol dimethyl ether for dissolving NaCF3SO3 is used as electrolyte. The method is characterized in that the high-quality NiPS3 nanosheet is applied to the sodium ion battery to be used as the negative electrode material, and meanwhile, the matched NaCF3SO3/diethylene glycol dimethyl ether is used as the electrolyte, so formation of a thick SEIfilm in the charging and discharging process can be effectively inhibited, and the sodium ion battery with high electric capacity, high rate capability and quick charging and discharging can be obtained. The sodium ion battery provided can be a button battery, a soft package battery and the like, is green and safe, and has great advantages as a future large-scale energy storage material.

The invention discloses a perfluorination method for end group of fluorine-containing polymer. The method comprises the following steps of: mixing the fluorine polymer with an end group stabilizing reagent, standing or stirring to convert a -COF group and a -COOH group in the polymer into a -CF3 group, wherein the end group stabilizing reagent comprises the following three components: (1) SF3Ra; (2) anhydrous hydrofluoric acid AHF; and (3) one or mixture of more than any two of diethylene glycol dimethyl ether, pyridine, methylene dichloride and trichlorofluoromethane, and the reaction temperature of the perfluorination method for the end group ranges from 0 DEG C TO 100 DEG C. In the method, only specific group in the fluorine polymer is selected to be converted into -CF3, rather than that -CH2- in a polymer molecule chain with the fluoride gas fluorination process is fluorinated into -CF2-.

The invention discloses an ether electrolyte. The ether electrolyte comprises a solute and a solvent; the solute contains lithium salt; the solvent is a mixed solution of diethylene glycol dimethyl ether and 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether. According to the electrolyte, LiTFSI and LiFSI are mainly used as electrolytes, and G2 and HFE are used as solvents to prepare the novel lithium-sulfur electrolyte. A charge-discharge curve of the lithium-sulfur battery is reduced from two traditional voltage platforms to one, which shows that the electrolyte has low polysulfide dissolving capacity, the shuttle effect of polysulfide can be effectively inhibited, and the lithium-sulfur battery shows excellent cycle performance.

A composition for surface cleaning of a platinum-osmium alloy comprises the following ingredients by weight: 10-30 parts of dihydroxymethyl benzoic acid, 30-50 parts of diethylene glycol dimethyl ether, 5-10 parts of N-methyl pyrrolidone, 50-70 parts of aluminum silicate, 20-30 parts of sodium dodecyl sulfonate, 30-40 parts of 2-ethyl hexanol, 20-30 parts of dimethyl imidazole, 5-10 parts of a surface active agent and 100-200 parts of ionic liquid. Compared with the conventional cleaning agent, the composition for surface cleaning of the platinum-osmium alloy, provided by the invention, has a good cleaning effect on grease, ensures that the residual quantity of a solvent is lower than the conventional technical standard, doesn't produce poisonous and volatile ingredients, and cannot react with metal.

The invention discloses an industrial pollution-free production method of a borane ester complex. The industrial pollution-free production method comprises the following steps: (1) dropwise adding boron trifluoride diethyl etherate to a reaction kettle; (2) adding sodium borohydride to react with the added boron trifluoride diethyl etherate in the reaction kettle by using diethylene glycol dimethyl ether as a solvent; (3) condensing diborane produced by the reaction in the step (2) by virtue of a condenser, and then transferring into an absorption kettle; (4) enabling the cooled diborane gas obtained in the step (3) to react with tetrahydrofuran or dimethylsulfide in the absorption kettle to obtain a borane complex. By adopting the industrial pollution-free production method of the borane ester complex, the problem of caking during blanking for production or reproduction in later can be solved, and an another problem due to wastewater treatment can also be solved; the industrial pollution-free production method is suitable for industrial production and can be used for effectively protecting the water resource and soil.

The invention relates to a preparation method of diphenyl cyclosiloxane. In the method, high-purity diphenyl dimethoxysilane free of polychlorinated biphenyl and a small amount of water are adopted asraw materials, diether series compounds such as ethylene glycol diethyl ether and diethylene glycol dimethyl ether with normal-pressure boiling points higher than 100 DEG C are used as solvents, a trace amount of an organic alkali such as tetramethylammonium hydroxide is used as a catalyst, generated methanol is distilled off in a micro-boiling state in a reaction kettle with a rectifying column,and commercial diphenyl cyclosiloxane is obtained in one step. The generated powdery diphenyl cyclosiloxane is extremely easy to separate from the liquid, all solvents are completely recycled and used mechanically, the byproduct methanol can also be rectified and purified for application, and no wastewater is discharged in the whole process.

The invention relates to a preparation method for weak-base arylamine diazonium salt and a method for preparing tertiary amine weak-base arylamine azo dye by the weak-base arylamine diazonium salt, and belongs to the technical field of clean production of the dye. The preparation method comprises the following steps of adding naphthalenesulfonic acid and alkyl nitrite to weak-base arylamine solution in sequence, reacting for 20min to 60min at 0 DEG C to 25 DEG C, and performing solid-liquid separation to obtain weak-base arylamine diazonium salt solid; solvent for dissolving weak-base arylamine is tetrahydrofuran, 1,4-dioxane, glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether or ethyl acetate. The preparation method for the weak-base arylamine diazonium salt and the method for preparing the tertiary amine weak-base arylamine azo dye by the weak-base arylamine diazonium salt, disclosed by the invention, have the beneficial effects that no sulfuric acid is used in a process of preparing the weak-base arylamine diazonium salt and the tertiary amine weak-base arylamine azo dye, therefore the environment is protected.