132 results about "ETHYLHEXYL ACETATE" patented technology

The process of extracting Co and eliminating Ca from copper-cobalt ore includes obtaining mixture leachate with soluble sulfate of Co, Ni, Ca and Mg; and extracting the mixture leachate with organic solvent, which comprises organic matter bis(2-ethyl hexyl) phosphoric acid or ”�2- ethyl hexyl phosphonate ester in 15-25 vol% and kerosene in 75-85 vol%. The organic solvent extracting procedure includes two steps, the first step of transferring Ca into the organic phase while leaving Co, Ni and Mg in the water phase, and the second step of transferring Co to the organic phase while leaving Ni and Mg in the water phase. The process can obtain cobalt sulfate solution with Co content up to 90-100 g / l, Ca ion content lowered to 0.01 g / l, Ni ion content lowered to 0.005 g / l, and Mg ion content lowered to 0.1 g / l and suitable for producing T-cobalt oxide and cobalt salt.

Disclosed is a process for the preparation of di-(2-ethylhexyl) terephthalate by the esterification of terephthalic acid with 2-ethylhexanol at elevated temperature and pressure while the water of reaction is removed from the reaction mixture.

The invention discloses a method for separating nickel, magnesium and cobalt from red soil nickel ore leaching liquid based on a solvent extraction technology. The method is characterized by comprising the following steps of: adjusting the pH value of the leaching liquid to be between 3.5 and 5.5; extracting impurities by using diisooctyl acid phosphate, and adding into an organic phase; extracting the cobalt and the magnesium by using 2-ethylhexyl phosphonic acid single 2-ethylhexyl ester; making the nickel left in a water phase to separate the nickel from the cobalt and the magnesium; performing multi-stage reverser flow magnesium washing on the organic phase from which the cobalt and the magnesium are extracted by using sulfuric acid solution at slightly low concentration; adding the magnesium into the water phase, and making the cobalt left in the organic phase to separate the cobalt from the magnesium; and reversely extracting the cobalt by using sulfuric acid solution at slightly high concentration to obtain cobalt sulfate solution with high purity. In the method provided by the invention, a process is simple, a relatively expensive reagent is not required to be consumed, the nickel, the magnesium and the cobalt can be effectively separated from the red soil nickel ore leaching liquid, nickel sulfate solution and the cobalt sulfate solution which have high purity are produced, the nickel and the cobalt have high recovery rates and the magnesium can be recycled.

The invention discloses an extraction seperation method of a rare-earth element. According to extraction seperation method, positive ions and negative ions in a quaternary ammonium salt ionic liquid extracting agent, i.e. 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester trialkyl methyl ammonium and phosphonic acid binary (2-ethylhexyl) ester trialkyl methyl ammonium react with rare earth ions to form neutral complex molecules, and the positive ions and negative ions in the quaternary ammonium salt ionic liquid extracting agent have inner synergistic effect and competitive effect in the process of extracting the rare-earth element, thereby the seperation factor of the rare-earth element is increased. Therefore, the extraction seperation method provided by the invention has the advantages that an interfacial phenomenon is good in the extraction process, no emulsification is generated, and an extracting solvent does not need to be saponified, the extraction seperation method has higher seperation factor of the rare-earth element and particularly high extraction seperation effect on heavy rare earth. In addition, the extraction seperation method of the rare-earth element, which is provided by the invention, has low extraction acidity and back extraction acidity and consumes little acid.

A composition for cleaning and degreasing substrates, methods of forming and using the composition, and a system and method for recycling the composition are provided. The composition includes a 2-ethylhexyl ester and may also include co-solvents, diluents, surfactants, and adjutants.

The invention provides a method for extracting and separating rare earth elements in a hydrochloric acid system. The method includes the steps: taking mono (2-ethylhexyl) phosphonate 2-ethylhexyl methoxy cinnamate trialkyl methyl ammonium or phosphonate (2-ethylhexyl) diester trialkyl methyl ammonium as an extracting agent; taking normal heptane as diluent; and extracting the rare earth elements in rare earth chloride water solution into the normal heptane. The extracting agent used in the method does not need to be saponified, extraction and reverse extraction acidity is low, and separation coefficient for the rare earth elements is high.

The invention discloses a method for recycling and purifying scandium oxide powder from waste acid in zirconium salt production. The method comprises the following steps: (S1) performing precipitation separation to remove zirconium from the waste acid liquid in zirconium salt production by use of a zirconium precipitation agent; (S2) performing extraction separation to remove iron from the waste acid after zirconium removal by use of organic-phase trioctyl tertiary amine N235; (S3) extracting and enriching scandium from the waste acid liquid treated by the step (S2) by use of organic-phase mono(2-ethylhexyl) 2-ethylhexyl phosphonate P507; (S4) extracting and purifying scandium from the back extraction liquid of the step (S3) by use of organic-phase di(methylheptyl) methyl phosphonate P350; (S5) precipitating and refining scandium oxide of the back extraction liquid in the step (S4) directly by use of oxalic acid. According to the method disclosed by the invention, scandium is recycled from waste acid and is enriched and further purified and refined to obtain high-purity scandium oxide powder; the method is beneficial to the environment-friendly discharge control and comprehensive utilization of waste acid, and reduces the environmental protection cost of waste acid treatment and up-to-standard discharge of an enterprise; more importantly, the method is used for recycling and preparing expensive high-purity scandium oxide powder.

An external preparation for skin comprising isononyl 2-ethylhexanoate and / or 2-ethylhexyl 2-ethylhexanoate (a component (a)); an oil-in-water type emulsion skin cosmetic comprising the component (a), (b) one or more members selected from higher fatty acids and higher alcohols which are in a solid or a semi solid form at normal temperature (25 DEG C), (c) a homopolymer, a copolymer or a crosspolymer containing as a constituent unit, one or more members selected from 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid and derivatives thereof, or a mixture thereof, and (d) one or more members selected from nonionic surfactant having an HLB value of 9 or greater; and an oil-in-water type or a water-in-oil type emulsion sunscreen cosmetic comprising (a) isononyl 2-ethylhexanoate and / or 2-ethylhexyl 2-ethylhexanoate, (b) an ultraviolet light absorber, (c) an ultraviolet light scattering agent, and (d) a silicone oil.

The invention discloses a method for preparing 5N cobalt chloride through P507 fractional extraction and belongs to the technical field of preparation of high-purity cobalt chloride. According to the method, the 5N cobalt chloride is composed of fractional extraction separated NiMgCo / CoCaCuZn, fractional extraction separated NiMg / Co and fractional extraction separated Co / CaCuZn with a high-cobalt low-nickel industrial hydrochloride solution as feed liquid and 2-ethylhexylphosphoric acid mono-2-ethylhexyl ester (P507 for short) as an extraction agent. The fractional extraction separated NiMg / Co and the fractional extraction separated Co / CaCuZn are connected in series. Organic phases of outlet organic phase supported cobalt of the fractional extraction separated NiMg / Co serve as extraction organic phases of the fractional extraction separated Co / CaCuZn. Outlet aqueous phase 5N cobalt chloride of the fractional extraction separated Co / CaCuZn serves as a washing agent of the fractional extraction separated NiMg / Co. Separation of metallic elements such as nickel, cobalt, magnesium, calcium and sodium is realized smoothly. The 5N cobalt chloride is prepared directly. The yield of cobalt reaches up to 95%-97%. The method has the advantages that the purity of separated cobalt chloride products is high; the yield of cobalt is high; consumption of the reagent is little; the technological process is short; and the production cost is low.

This invention discloses the method for separating cerium and recovering fluorine and preparing ultramicro-powder cerium trifluoride. In this invention method, bastnasite ore or the mixture containing bastnasite ore and eremite ore is used as raw material mixed with sulfuric acid or nitric acid or the mixture containing both in optional ratio. The extractant is the mixture containing EXTR1 and EXTR2. Said EXTR1 is trialkyl phosphine oxide or dimethyl heptyl methyl-phosphonate or tritutyl phosphate; and said EXTR2 is di(2-ethylhexyl) phosphate, or mono 2-ethyl-hexyl 2-ethyl-hexyl-phosphonate, or di (2,4,4-trimethyl pentyl) phosphonate. The diluent is paraffine or sulfonated kerosene. The products of Ce3+ and cerium trifluoride are obtained after the loading organic phase is proceeded washing and back-extraction. The purity of the cerium trifluoride is 99.9-99.999%, and the grain size distribution is 40-300nm, the recovery rate of cerium is greater than 95%, and fluorine than 98%.

An adhesive tape, especially for wrapping cables, consisting of a preferably textile carrier and of a pressure-sensitive adhesive which is applied on at least one side of the carrier and is in the form of a dried polymer dispersion, the polymer being synthesized from: a) 40% to 90% by weight of n-butyl acrylate and / or 2-ethylhexyl acrylate b) 0% to 10% by weight of an ethylenically unsaturated monomer having an acid or acid-anhydride function c) 60% to 10% by weight of one or more ethylenically unsaturated monofunctional monomers different from (a) and (b) d) 0% to 1% by weight of a difunctional or polyfunctional monomer and the pressure-sensitive adhesive comprising between 15 and 100 parts by weight of a tackifier (based on the mass of the dried polymer dispersion).

A composition for cleaning and degreasing substrates, methods of forming and using the composition, and a system and method for recycling the composition are provided. The composition includes a 2-ethylhexyl ester and may also include co-solvents, diluents, surfactants, and adjutants.

The present invention discloses a pressure-sensitive, flame-retardant adhesive comprising a composition fabricated with the polymerization of acrylic esters, dibromostyrene, and vinyl phosphonic acid, with or without acrylic acid, mixed with dispersions of antimony trioxide. The adhesive composition preferably is an emulsion polymer fabricated with dibromostyrene, 2-ethylhexyl acrylate, nbutyl acrylate, and vinyl phospohonic acid, mixed with Sb2O3 in an approximate ratio of 100 parts polymer per about 8-12 parts Sb2O3. Preferred polymers are those containing at least about 11.6 % to 15.6 % bromine and from 0.25 % to 2.5 % phosphorous. The adhesive is particularly advantageous in fabricating optical circuit devices.

The invention provides a method for extracting and separating rare earth elements in a sulfuric acid system. The method includes the steps: taking mono (2-ethylhexyl) phosphonate 2-ethylhexyl methoxy cinnamate trialkyl methyl ammonium as an extracting agent; taking normal heptane as diluent; and extracting the rare earth elements in rare earth sulfate water solution into the normal heptane. The extracting agent used in the method does not need to be saponified, extraction and reverse extraction acidity is low, and separation coefficient for the rare earth elements is high.

The invention provides a method for extracting cerium (IV) from a sulfur phosphorus mixed acid system and preparing a cerous phosphate nano material. The method comprises a step of extracting cerium (IV) from the sulfur phosphorus mixed acid system to obtain an organic phase loading cerium (IV) by taking bifunctional ionic liquid as an extracting agent and n-heptane as a diluting agent, wherein the sulfur phosphorus mixed acid system comprises cerium (IV) ions, and the bifunctional ionic liquid is one or more of bis(2,4,4-trimethylpentyl) phosphonic acid trialkyl methyl ammonium, 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester trialkyl methyl ammonium and phosphonic acid bis(2-ethylhexyl) ester trialkyl methyl ammonium. In the method, the bifunctional ionic liquid has stronger extracting power and high selectivity to cerium (IV), and can be used for separating cerium (IV) from thorium (IV) and other rare earths (III); and the cerous phosphate nano material is prepared by reducing and performing reverse extraction on the loaded organic phase, so that cerium (IV) and phosphorus in the system are recovered to a certain extent.

The invention discloses an extracting agent, an extraction system and an application. The extracting agent comprises 2-ethylhexyl phosphonic acid mono-ethylhexyl ester and di-(2-ethylhexyl) phosphinic acid. The extraction system comprises an organic phase and a water phase, wherein the organic phase comprises a diluent and the extracting agent; the water phase comprises rear-earth ions; and the pH value of the water phase is 1.0-3.0. The extraction system disclosed by the invention can effectively improve extraction and reverse extraction performances of a P507 extraction system, is good in separating capacity on heavy rear-earth elements, capable of carrying out extraction and reverse extraction under relatively low acidity and reducing dosage of acid and alkali, more green and environmentally-friendly, low in cost, high in saturation capacity, free of an emulsion phenomenon and more suitable for practical industrial production.

The invention discloses water-soluble cutting fluid. The cutting fluid consists of the following components in percentage by weight: 15 to 25 percent of oleate-2-ethylhexyl ester, 2 to 8 percent of 3,5,5-trimethyl caproic acid, 3 to 10 percent of sebacic acid, 5 to 10 percent of mono ethanolamine, 15 to 20 percent of triethanolamine, 5 to 10 percent of diglycol, 3 to 10 percent of monoisopropanolamine, 15 to 20 percent of polyethylene glycol 600 and 20 to 30 percent of water. The invention also discloses a preparation method of the water-soluble cutting fluid. The method comprises the following steps of: reacting by mixing the oleate-2-ethylhexyl ester, the mono ethanolamine, the 3,5,5-trimethyl caproic acid and a part of water to obtain alkylol amine synthesis ester mixture A; reacting by mixing the sebacic acid, the triethanolamine, the monoisopropanolamine and the rest amount of water to obtain alkylol amine synthesis ester mixture B; and reacting by mixing the diglycol, the polyethylene glycol 600, the alkylol amine synthesis ester mixture A and the alkylol amine synthesis ester mixture B to obtain a finished product.

The invention discloses a method for treating 2,4-diaminotoluene (TDA) wastewater through complexing extraction. The method is characterized by mainly comprising the steps of pH value adjustment, extraction and an extraction agent recycling treatment process. The method adopts one or two of 2-ethylhexyl 2-ethylhexyl phosphonate, di(2,4,4-trimethyl amyl) phosphonic acid as a complexing agent, one or more of n-octyl alcohol, isooctanol and sec-octyl alcohol as a cosolvent, and kerosene or cyclohexane as a diluent for preparing a complexing exaction agent for separating TDA compounds which are hard to be biochemically treated in the wastewater, and the extraction agent is regenerated by using inorganic acid and is subsequently repeatedly used. The method is simple and reasonable in process, high in operability, convenient to operate and low in treatment cost. The TDA concentration of the wastewater treated by using the process is greatly reduced, the primary extraction removal rate of TDA is 95-99%, and a wide application prospect is achieved.

The invention discloses a liquid chromatography-tandem mass spectrometry method for measuring 18 semi-volatile organic pollutants in water. According to the method, a clean water sample such as surface water, drinking water, and the like is simply filtered by a 0.22 [mu]m micro-porous filter membrane, and then a liquid chromatography-mass spectrometry instrument is used to separate and detect the following 18 compounds in water: aniline, benzidine, acrylamide, picric acid, carbaryl, deltamethrin, microcystic toxin-LR, dibutyl phthalate, bis(2-ethylhexyl) phthalate, dichlorvos, trichlorphon, parathion, methyl parathion, malathion, dimethoate, demeton, atrazine, and carbofuran. The provided method can detect many target substances. The detection range of the method is 0.001 to 0.49 [mu]g / L, the relative standard deviation is 0.7 to 15.4%; and the analysis method has the advantages of high sensitivity, quick analysis speed, little pollution, and simple and efficient pretreatment, is especially suitable for standard analysis of drinking water source monitoring, and solves the problems of bad conformability, large labor strength, and low analysis efficiency of the conventional standard method.

The invention relates to a technology for separating rare earth element by extraction system added with modifier, which comprises using potassium dihydrogen phosphate and its sulfo-derivative as the extractant, wherein the potassium dihydrogen phosphate or its sulfo-derivative is bis-(2-ethylhexyl)phosphate (P204), 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (P507), bis(2, 4, 4-trimethylpentyl)phosphinic acid (Cyanex272), bis(2, 4, 4-trimethylpentyl) dithiophosphinic acid (cyanex301), bis(2, 4, 4-trimethylpentyl) monothiophosphinic acid (Cyanex302), using ROH as addition agent, R is C4-C10 alkyl, using alkane or aromatic hydrocarbon as thinning agent, forming 1.0-1.5M potassium dihydrogen phosphate - 5-30% ROH - alkane or aromatic hydrocarbon extraction architecture, using chlorinated or nitrated rare earth solution as feed liquid, using hydrochloric acid or nitric acid as inverse acid, determining single rare earth in raffinate or strip liquor through EDTA titration, and determining mixed rare earth through plasma atom emission spectrometric method.

The invention relates to preparation and application of a di(2-ethyl hexyl) phthalate surface molecular imprinting magnetic nanometer material, and belongs to the technical field of nanometer materials. The preparation method includes the steps of conducting ultrasonic stirring under protection of N2, adding a polyethylene glycol solution to a mixed solution of Fe(NO3)3 and FeSO4, regulating pH, separating out flocculent magnetic fluid through a magnet, dispersing the flocculent magnetic fluid in ethyl alcohol, evenly mixing the mixture with an acetone solution of tetraethyl orthosilicate, and adding strong ammonia water to form black gel; obtaining an Fe3O4-SiO2 material after ageing and drying are conducted on the gel; dissolving DEHP and phenyl trimethoxy silane in methyl alcohol, adding the activated Fe3O4-SiO2 material, tetraethyl orthosilicate and acetic acid after oscillation, and conducting stirring at the room temperature; obtaining the DEHP imprinting magnetic nanometer material after trichloromethane washing, magnetic separation and vacuum drying, wherein the average grain diameter is about 33 nm, and the saturation magnetization strength is 14.9 emu.g<-1>. When the material is added to an environment water sample or a beverage sample containing DEHP, DEHP can be efficiently enriched, the processing speed is high, and selectivity is good; the material can be repeatedly used.

The invention belongs to the technical field of highway crack repair materials and preparation methods thereof, and mainly solves the technical problems that the existing materials used for repairing pavement cracks easily cause pavement crack protrusion, the material strength is low, the elongation at break is low, the permeability is low, the environment is polluted, the curing time is long and the pavement binding property is poor. The material is formed by a component A and a component B through curing. The component A comprises 30 to 65 parts of polyoxypropylene diol N220, 40 to 25 parts of polyoxypropylene diol N210, 12 to 5 parts of amino-terminated polyoxypropylene ether D2000, 8 to 2 parts of carbon black, 7 to 2 parts of titanium dioxide and 3 to 1 parts of catalyst; the component B comprises 171.4 parts of polyether polyurethane prepolymer and 28.6 parts of di 2-ethyl hexyl phthalate and the like; after the component A and the component B are mixed according to a mass ratio of 1:1, the immobilization time of mixture is shorter than or equal to 8min under 25DEG C, the curing time is shorter or equal to 90min and the road can be opened to traffic after curing.

The invention discloses a method for determining the migration quantity of volatile organic compounds in an adhesive sticker for a food label in a water-based food simulating object. The method comprises the following steps: performing a direct or indirect migration test on the adhesive sticker for the food label through a water-based food simulating solution; sampling the water-based food simulating solution through purging and trapping; separating 10 volatile organic compounds through HP-5ms or chromatographic columns with similar properties; performing detection through a mass spectrometry detector; performing quantification through an external standard method, wherein the 10 volatile organic compounds include nonene, 2-ethylhexanol, 1,2,4,5-tetramethylbenzene, camphor, 1-dodecene, naphthalene, 2-ethylhexyl acrylate, 1-methylnaphthalene, 1-undecanol and dodecyl aldehyde. The method is accurate in test, easy to operate, high in efficiency, quick, high in sensitivity and high in practicality, is applicable to qualitative and quantitative determination on the volatile organic compounds in the adhesive sticker for the food label through a manufacturing enterprise of the adhesive sticker for the food label and relevant government supervision departments, and can be used for avoiding harm to the physical health of a consumer caused by over-large migration quantity of the volatile organic compounds.

A method for preparing nanometer cerium oxide (CeO2) particles through microemulsion belongs to the field of manufacture of nanometer materials and includes the following steps that a microemulsion area is defined that the microemulsion is composed of 9.9 to 92.21 parts of surfactant 2- ethylhexyl phosphonic acid single 2- ethylhexyl-ester hereinafter referred to as P507, 4.72 to 89.11 parts of oil phase sulfonating kerosene and 0.99 part to 4.31 parts of water phase sodium hydroxide solution by mass proportion. Cerium salt solution is added into the microemulsion area under stirring effect to obtain a load organic phase, precipitator oxalate solution is added into the load organic phase to obtain a precursor, and the precursor is roasted for 1.5 to 6.5 hours under the temperature of 250 DEG C to 750 DEG C to obtain nanometer CeO2 ball particles with the powder feature of 10nm to 30nm. The nanometer CeO2 particles are free of obvious agglomeration and even in particle diameter distribution.

In the production of an aluminum etched plate (1) for an electrolytic capacitor having a high level of capacitance by subjecting an aluminum plate to alternating current etching in an etching liquid to enlarge the face, an aluminum plate having an aluminum purity of not less than 99.98% by mass, a copper content of less than 30 ppm, and an iron content of 5 to 50 ppm is subjected to alternating current etching in an etching liquid containing not less than 0.01 ppm and less than 100 ppm of an additive such as diethylenetriaminepentaacetic acid, ethylenediaminetetraacetic acid, or diethylhexyl phthalate mixed therein.

A hair treatment composition includes, based on the weight of the composition, 0.1 to 20 wt. % at least one silicone which has groupings of the formula (I) as defined herein; 0.1 to 20 wt. % at least one copolymer which has monomer units of the formulas (V) and (VI) as defined herein; and 0.1 to 10 wt. % (RS)-2-cyano-3,3-diphenylacrylic acid-2-ethylhexyl ester. The hair treatment composition has an improved protection effect against UV radiation and imparts better combability, shine, elasticity, brittleness, and maximum tear resistance to hair.

The invention which relates to a method for preparing CeO2 nanoparticles from a W / O type microemulsion belongs to the nanomaterial preparation field. The method comprises the following steps: 1, determining a microemulsion region which comprises a surfactant 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (hereinafter referred to as P507), an oil phase sulfonated kerosene, an organic solvent n-heptane and a water phase sodium hydroxide solution, wherein an emulsifier comprises the surfactant P507 and the organic solvent n-heptane, and the range of the mass ratio of the emulsifier to the sulfonated kerosene to NaOH in the sodium hydroxide solution is 9.85-93.08:2.39-88.67:1.48-10.85; 2, adding a Ce salt solution to the microemulsion region under stirring to obtain a loaded organic phase; 3, adding a precipitant oxalic acid solution to the loaded organic phase to obtain a predecessor; and 4, roasting the predecessor at 250-750DEG C for 1.5-6.5h to obtain the spherical CeO2 nanoparticles with the powder morphology of 10-20nm. The CeO2 nanoparticles prepared in the invention have the advantages of no obvious particle agglomeration and uniform particle size distribution.

The invention relates to a cultural paper reactive emulsifier surface sizing agent which has molecular structure as the following. The preparation method consists of the steps of: reacting polyethylene glycol, lauryl alcohol, and maleic anhydride so as to obtain maleic acid polyethylene glycol ester dodecy, then with ammonium persulfate and sodium bisulfite as the initiators, subjecting maleic acid polyethylene glycol ester dodecy, styrene, methyl methacrylate, acrylic acid-2- ethylhexyl acetate, hydroxyethyl acrylate, acrylamide and dimethyldiallylammoniumchloride to a core-shell copolymerization reaction so as to prepare the cultural paper reactive emulsifier surface sizing agent. The obtained cultural paper reactive emulsifier surface sizing agent can enhance the strength, water resistance and stiffness of cultural paper, and can substantially improve the wear resistance, printing ink affinity, permeability, stiffness and other application performances of paper. In printing, the cultural paper reactive emulsifier surface sizing agent of the invention can make the printing ink brighter and clearer, and simultaneously greatly mitigates the phenomena of cross color, strike-throughand linting and dusting etc. in color printing.