1131 results about "Ether solvent" patented technology

Disclosed are compositions for an organic electroluminescent device favorably used for forming a hole injection layer and a hole transport layer of the organic electroluminescent device by a wet film forming method. The compositions for the organic electroluminescent device, which are composite solutions prepared by dissolving hole transport materials such as aromatic diamine compounds and an electron acceptor such as tri(pentafluorophenyl)boron in a solvent that contains an ether solvent and/or an ester solvent whose water solubility at 25° C. is 1 weight % or less in the solvent, with a concentration of 10 weight % or higher in the compositions.

The invention provides a power battery and a lithium ion electrolyte thereof. The lithium ion electrolyte comprises a non-aqueous organic solvent, lithium salt and an additive, wherein the additive comprises a first additive and a second additive, and the first additive comprises silane sulfate; the first additive accounts for 0.05 to 10% of the total weight of the electrolyte, and the second additive is an auxiliary additive and comprises one or more of vinylene carbonate, propane sultone, fluoroethylene carbonate, vinyl ethylene carbonate, ethylene sulfite, adiponitrile, and succinic anhydride in any proportion; the second additive accounts for 0.1-5wt% of the total weight of the electrolyte, and the non-aqueous organic solvent is a carbonic ester solvent, a carboxylic ester solvent, an ether solvent or a ketone solvent; and the lithium salt comprises primary lithium salt and secondary lithium salt.

The invention relates to an environment-friendly safe solvent cleaning agent which specifically comprises the following components in parts by weight: 0-97 parts of C10-C12 alkanes, 3-100 parts of alcohol ether solvent, 0.00-0.01 part of antioxidant and 0.00-0.01 part of corrosion inhibitor. The environment-friendly safe solvent cleaning agent provided by the invention is narrow in boiling range and the distillation recovery rate of the environment-friendly safe solvent cleaning agent can be above 95%; the environment-friendly safe solvent cleaning agent is also high in clearing ability, and has strong cleaning ability for polar dirt and nonpolar dirt; especially, the environment-friendly safe solvent cleaning agent can be used for thoroughly cleaning various metal working fluids, and oil-based and water-based cutting fluids without any residual and corrosion on metals; moreover, the shortcoming that the previous hydrocarbon type cleaning agents are wide in boiling range and only capable of dissolving and cleaning the nonpolar dirt are overcome. The cleaning agent is perfect in balance of cleaning ability, safety, dryness and reproducibility.

The invention relates to a method for obtaining high pure dicarboxylic acid. The method comprises the steps of I. heating a termination fermentation broth for inactivation; II. acidizing to make dicarboxylic acid crystallized and precipitated, and filtering to obtain a filter cake of dicarboxylic acid; III. mixing the filter cake of dicarboxylic acid and an ether solvent to make the dicarboxylic acid dissolved, separating an organic phase and a water phase, wherein the ether solvent is ether, n-propyl ether, iso-propyl ether, butyl ether, amyl ether or hexyl ether; IV. adding organic an adsorbent to the organic phase obtained from the step III, and filtering to remove solid materials; and V. cooling the organic phase obtained from the step IV until dicarboxylic acid is crystallized and precipitated, filtering to obtain a filter cake of crystallized dicarboxylic acid, and drying the filter cake of crystallized dicarboxylic acid to obtain a dicarboxylic acid product with a purity, by weight, higher than 98.5%. The method overcomes the shortages of complex operation, high production cost, low product purity, high colourity, high equipment investment and the like in a conventional refining method.

The invention discloses a pyroxylin lacquer with low smell, wherein the pyroxylin lacquer has no benzene hydrocarbon, and the lacquer formula includes 10 percent-25 percent by weight of at least one resin, 25 percent-55 percent by weight of at least one of alcohol ether solvent, ester solvent or alcoholic solvent, , 20 percent-50 percent by weight of at least one curing agent, plasticizer and additive, the pyroxylin lacquer of the invention uses non-benzene solvent, and ensure the superiority of pyroxylin lacquer per se, so as to effectively avoid environmental pollution produced in production, construction and using process of the benzene hydrocarbon, and health hazard to production operator and constructer.

An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte obtained by admixture of a magnesium salt of a non-nucleophilic base comprising nitrogen and aluminum trichloride in an ether solvent is provided. As sulfur is stable to a voltage of at least 3.2 V relative to a magnesium reference, a magnesium-sulfur electrochemical device is specifically provided.

The invention discloses a preparation method of a sofosbuvir intermediate, which comprises the following step: in an anhydrous non-protonic solvent, carrying out dynamic kinetic resolution on a compound disclosed as Formula (II) under the action of an organic alkali and/or inorganic alkali to prepare a compound disclosed as Formula (I), wherein the non-protonic solvent is one or more of ester solvent, ketone solvent and ether solvent, the organic alkali and/or inorganic alkali account/accounts for 0.1-10 wt% of the compound disclosed as Formula (II), the temperature of the dynamic kinetic resolution is 10-30 DEG C, and the time of the dynamic kinetic resolution is 5-10 hours. The preparation method has the advantages of high conversion rate, high product purity and low cost, and is environment-friendly.

The invention discloses a mothproof fabric and a preparation method thereof. The preparation method of the mothproof fabric comprises the following steps: weaving natural fibers into an inner layer, synthetic multifilament yarn into a surface course, and polypropylene fiber filament or polyethylene fiber filament fabric into a lapping layer, wherein the inner layer and the surface course are in grid shape; dying in dying liquid at a temperature of 60-105 DEG C for 10-120 minutes; washing with water; drying; and forming, wherein the dying liquid is a missible-oil aqueous solution, missible oil is formed by mixing pyrethroid and ether solvent in a mass ratio of 1:5 to 1:20; the mass ratio of the fabric to the dying liquid is 1:7 to 1:20; and the amount of the missible oil is 5-10% of the fabric weight. The method has short production flows, convenient operation, small consumption of a pyrethroid pesticide and low requirements for fiber material by adopting dying and the additional pyrethroid pesticide; and the fabric prepared by the method has favorable permeability, strong capability of resisting insect invasion and long anti-mosquito effect.

The present invention is one kind of water soluble anticorrosive paint and its preparation process, and belongs to the field of paint technology. The water soluble anticorrosive paint consists of two components, including the component A comprising chitin-epoxy resin emulstion 45-50 weight portions, ferric oxide red 20-22 weight portions, antirust pigment 8-10 weight portions, talcum powder 8-10 weight portions, defoaming agent 0.25-0.35 weight portions, leveling agent 0.25-0.35 weight portions, flash rust resistant 0.35-0.45 weight portions and deionized water 8-10 weight portions; and the component B comprising polyamide 650 58-62 weight portions and alcohol ether solvent 38-42 weight portions. The water soluble anticorrosive paint has excellent emulsifying performance, high protecting performance, good antisepsis and anti-mildew performance, high weather resistance and high alkali tolerance.

The invention discloses an environment-friendly water-based metal cleaner and a preparation method thereof. The environment-friendly water-based metal cleaner is composed of the following components of, by mass, 5-30% of a nonionic surfactant without APEO, 0.1-5% of a cationic surfactant, 0.1-15% of an inorganic washing assistant, 0.3-5% of a chelating agent, 0.5-6% of a corrosion inhibitor, 0.5-7% of an anti-redeposition agent, 0.5-3% of a penetrating agent, 0.1-8% of an alcohol ether solvent, and the balance water. The preparation method of the environment-friendly water-based metal cleanercomprises the following steps that the inorganic washing assistant and the chelating agent are added in the water and evenly mixed; then the nonionic surfactant without the APEO, the cationic surfactant, the corrosion inhibitor, the anti-redeposition agent, the penetrating agent and the alcohol ether solvent are added and evenly mixed; and the environment-friendly water-based metal cleaner is obtained. The environment-friendly water-based metal cleaner is free of phosphorus, nitrite and the APEO, good in anti-rust performance, good in stability, free of stimulation, safe, environmentally friendly and simple in preparation technology.

The invention discloses a preparation method of a ribofuranose phosphate derivative. The preparation method comprises preparation steps as follows: L-alanine isopropyl ester hydrochloride, phenol dichlorophosphate and substituted phenol are taken as starting materials and have a docking reaction under the action of alkali; (2R)-2-deoxy-2-difluoro-2-methyl-D-erythropentonic acid GAMMA-lactone and 3,5-dibenzoate reduce carbonyl in a dichloromethane or ether solvent into an alcoholic hydroxyl group under the action of a strong reducing agent; an intermediate with a formula 2-1 has a reaction with paratoluensulfonyl chloride under the action of alkali to obtain p-toluenesulfonates; an intermediate with a formula 2-2 and a benzoyl cytosine derivative have a docking reaction under the action of a condensing agent; an intermediate with a formula 2-3 converts cytosine into uracil under the action of organic acid; benzoyl protection for an intermediate with a formula 2-4 is released under the action of an alkaline agent; an intermediate with a formula 2-5 and an intermediate with a formula 1 are docked under the action of a Grignard reagent to obtain Sofosbuvir.

The invention relates to the technical field of the surface treatment of metal powder, in particular to a preparation method of coated aluminum powder, comprising the following steps of: mixing and stirring aluminum powder and an alcohol/ether solvent; then, respectively adding organosiloxane, water and a pH regulating agent; reacting and mixing; and pumping and filtering to prepare coated sheet aluminum powder. The preparation method can complete a coating process at normal temperature, has simple manufacturing technology and can better coat aluminum powder paint. The prepared aluminum powder paint has better acid-base resistance, glossiness and good dispersivity in a water paint system and solves the problem of hydrogen liberation of aluminum powder in chromium-free aqueous Dacromet paint.

The invention relates to a water-based primer-topcoat synthetic anti-corrosive paint for coating automobile spare parts and a preparation method thereof. Most of the traditional water-based anti-corrosive paints have the shortcomings of poorer outdoor durability, self-drying performance and anti-corrosive performance. The water-based primer-topcoat synthetic anti-corrosive paint for coating the automobile spare parts comprises the following components in percentage by weight: 39.5-59.5% of water-based epoxy-ester modified acrylic resin, 25-35% of anti-corrosive pigment and filler, 0.15-0.4% of water-based deforming agent, 0.3-0.6% of water-based wetting dispersant, 0.15-0.4 of water-based substrate wetting agent, 5-8% of alcohol ether solvent, 15-20% of water, 0.5-0.8% of water-based drying agent, 1.0-1.5% of anti-corrosive agent, 0.2-0.5% of thickening agent and 0.05-0.2% of organic amine neutralizing agent. The water-based primer-topcoat synthetic anti-corrosive paint provided by the invention can dry by per se under a normal temperature; and the weather resistance property and the non-corrosive property of paint films are good.

The invention discloses an electrolyte and a lithium secondary battery comprising the same. The lithium secondary battery includes the components of: a positive electrode including an overlithiated lithium transition metal oxide with a layered structure; a negative electrode including a silicon-based negative active material; and an electrolyte that is interposed between the positive electrode and the negative electrode and includes a fluoride-based ether solvent in an amount of 3 vol% or more based on a total volume of a non-aqueous electrolytic solution.

The invention discloses an aqueous finish paint used for coiled material. For a present aqueous paint used for steel band, in the preparation of epoxy modified polyester resin in the paint, it becomes aqueous must after amine neutralization, thereby, the steel band coated by the paint has the disadvantage of poor coating film water resistance. The aqueous finish painting in the invention comprises the following components: water soluble saturated polyester resin 45-50%, pigment 25-35%, aqueous defoaming agent 0.2-0.5%, aqueous wetting and dispersing agent 0.5-0.8%, aqueous leveling agent 0.3-1.0%, ethers solvent 2-5%, water 5-10%, water soluble amino resin 5-8%baking vanish cooling catalyst 0.2-0.8%, delustering powder 0-1.0% and aqueous anti-scratch agent 0-0.1%. The invention realizes water solubility of polyester resin by dicarboxybenzenesulfonic acid sodium salt, does not need amine neutralization, and achieves coating film with good water resistance.

The invention discloses an aqueous bronze powder preparation method. The method comprises the following steps: cleaning sheet bronze powder ball-milled in a ball mill with a ketone solvent in a cleaning tank, press-filtering, and carrying out solid-liquid separation to obtain a filter cake; adding the filter cake, an alcoholic solvent and a titanate coupling agent to a reaction container, and stirring; taking ammonia water and distilled water, and mixing ammonia water with distilled water for dilution; taking ethyl orthosilicate, and diluting with the alcoholic solvent; simultaneously adding to the reaction container in a dropwise manner; ageing for 6-10h, taking out, press-filtering, and carrying out solid-liquid separation to obtain inorganic silicon coated bronze powder; taking the inorganic silicon coated bronze powder and an ether solvent, and uniformly dispersing the inorganic silicon coated bronze powder in the ether solvent; and taking a hydrophilic ester monomer and an azo initiator, adding to the reactor, coating, taking out, press-filtering, and carrying out solid-liquid separation to obtain aqueous bronze powder. The method adopts an organic-inorganic double layer coating modifying treatment process to prepare the aqueous bronze powder, so the aqueous bronze powder has a high controlled release efficiency and does not change its color for a long time in alkaline printing ink.