101 results about "1-butyl-3-methylimidazolium" patented technology

Use is made, for selectively hydrogenating the olefinic double bonds of block copolymers, at least one block of which comprises olefinic double bonds, using a catalyst based on a metal from Group VIII in a medium comprising an organic solvent for the copolymer and an ionic liquid as solvent for the catalyst, of a water-immiscible ionic liquid, preferably an ionic liquid for which the anion is the hexafluorophosphate anion and the cation is the 1-butyl-3-methylimidazolium (bmim⁺) or 1-ethyl-3-methylimidazolium (emim⁺) cation.

Applied to poly(styrene)-b-poly(butadiene)-b-poly(methyl methacrylate) block copolymers, the poly(butadiene) block of which predominantly possesses a 1,4-microstructure, this process results in copolymers for which the degree of hydrogenation is at least equal to 50% and which exhibit a melting point of greater than 30 °C.

The invention provides a method for preparing adipic acid through liquid-phase catalytic oxidation of cyclohexanol. H2O2 is taken as oxidant, a heteropoly acid imidazole salt is taken as catalyst, the cyclohexanol undergoes the catalytic oxidation to prepare the adipic acid, the catalyst can be phosphotungstic acid 1-butyl-3-methylimidazolium bmim3PW12O40, phosphomolybdic acid 1-butyl-3-methylimidazolium bmim3PMo12O40, and molybdovanadophosphoric heteropolyacid 1-butyl-3-methylimidazolium bmim3+xPMo12-xVxO40 (x is equal to between 1 and 3) and so on, and the bmim represents a 1-butyl-3-methyl-imidazolium cation. Compared with the method of preparing the adipic acid by industrially using nitric acid (nitrate) to oxidize the cyclohexanol, the method can not produce poisonous oxynitride N2O, and avoids the harm to the environment; and in a reaction system, phase shift catalyst and addition agent are not used, which avoids the potential environmental pollution and has apparent economic and social significance.

A method for improving the strength of carbon fibers, comprising: 1) soaking the carbon fibers in an aqueous solution of nitric acid, washing the carbon fibers with deionized water until the washing liquid is neutral after soaking; 2) preparing a carbon nanotube dispersion into a spraying liquid, carbon The nanotubes are functionalized carbon nanotubes, which are obtained from hydroxylated carbon nanotubes, carboxylated carbon nanotubes or aminated carbon nanotubes. The dispersion liquid is a mixture of ionic liquid and water, and the ionic liquid is obtained from 1,3 -Dimethylimidazole p-toluenesulfonate, 1-butyl-3-methylimidazole p-toluenesulfonate, 1-octyl-3-methylimidazole chloride or 5-bromo-2-methyl-3 - One of the nitropyridines, the content of carbon nanotubes in the spraying liquid is 16-48g/L; 3) The spraying liquid is applied with positive static electricity of 10-40kV, and the carbon fiber tow is flattened and grounded to form a spraying liquid acceptor, and then passes through Electrostatic spraying sprays the spray liquid on the carbon fiber surface. The tensile strength of carbon fiber can be increased by more than 100%.

The invention discloses a method for dissolving and extracting cellulose in bagasse. The method comprises the following steps: (1) soaking bagasse with water, filtrating, using sodium hydroxide solution to activate, washing with deionized water to ensure the pH value to be 7, filtrating, drying, grinding; (2) adding ionic liquid 1-butyl-3-methylimidazolium chloride in the pretreated bagasse, heating to 80 DEG C, keeping temperature for 2-5min, adding pyridine while stirring, performing dissolution reaction at 70-100 DEG C for 30-240min, centrifugalizing to obtain cellulose solution; (3) addingthe obtained cellulose solution in deionized water, stirring, filtrating to obtain filter residue, washing the filter residue with deionized water and drying to obtain regenerated cellulose. The method of the invention is easy, the process is convenient, energy-saving and environmentally friendly, and the method greatly expands the reuse of agricultural wastes and the range of application of cellulose, thus having broad application prospect.

The invention relates to a gel-type polymer electrolyte and a preparation method thereof. The gel-type polymer electrolyte membrane is prepared by using amine terminated nitrile rubber as a matrix of the solid electrolyte, dissolving the matrix, lithium salt, epoxidized polysilsesquioxane, and 1-butyl-3-methylimidazolium trifluoro methane sulfonate in an organic solvent, pouring the solvent on a teflon template, and carrying out heat treatment in a baking oven after volatilizing tetrahydrofuran. Compared with the prior art, the operation is simple; the membrane forming is easy; and the prepared membrane is smooth and uniform, has good mechanical properties, high room-temperature conductivity, and stable electrochemical window, and the prepared membrane used as solid electrolyte materials for the lithium ion battery has an application prospect.

The invention provides a method for electrodepositing metal lanthanum in an ionic liquid, relates to a method for electrodepositing metal lanthanum, and is used for solving the problem that a single metal lanthanum deposition layer can not be obtained in the ionic liquid 1-butyl-3-methylimidazolium trifluoro-methanesulfonate currently. The method comprises the following steps: adding anhydrous lanthanum chloride in the ionic liquid 1-methyl-3-ethyllimidazolium di(trifluoromethylsulfonyl)imine and evenly mixing, so as to obtain an electroplating liquid; and electroplating by using a constant current mode based on pretreated copper sheet as a cathode and platinum, graphite or titanium-based oxide as an anode, so as to obtain metal lanthanum deposited on the surface of a substrate. According to the invention, a La plated layer prepared by adopting an electrodeposition method is smooth and even, and the plating liquid components are simple and easy to control. In the invention, electrodeposited metal lanthanum can be applied to the field of functional material preparation.

A method for improving the strength of carbon fibers, which uses an electrostatic spraying method to coat carbon nanotubes on the surface of carbon fibers to make up for their surface structural defects, comprising: preparing a dispersion liquid for carbon nanotubes into a spraying liquid, and the dispersion liquid is a mixture of ionic liquid and water , the ionic liquid is taken from 1,3-dimethylimidazole-p-toluenesulfonate, 1-butyl-3-methylimidazole-p-toluenesulfonate, 1-octyl-3-methylimidazole chloride or 5- One of bromo-2-methyl-3-nitropyridine; the spray liquid is applied with 10-40kV positive static electricity, and the carbon fiber tow is flat and grounded to form a spray liquid receiver; the spray liquid is sprayed on the surface of the carbon fiber by electrostatic spraying, Based on the weight ratio of carbon fibers to carbon nanotubes, the spraying amount is controlled to be 1000:(0.5-10). The invention has the advantages of simple process, low cost, high efficiency, good repairing effect of carbon fiber surface structural defects and the like, and is easy to realize industrial application.

According to the invention, bast-fibre or fabric is used as a raw material and can be modified by the use of a 1-butyl-3-methylimidazolium chloride ionic liquid ([Bmim]Cl) to substantially raise the dyeing performance of direct dyestuff or reactive dye on linen. The advantage of the invention lies in that 1-butyl-3-methylimidazolium chloride ionic liquid ([Bmim]Cl) is a high-efficiency cellulose swelling agent and has a simple treatment process. In addition, it is safe and nontoxic when processing by the use of the ionic liquid, and the ionic liquid can be recovered and utilized after the treatment, so as to reduce discharge of a large amount of high-density alkali waste liquid after traditional treatment. The dyeing performance of the modified bast-fibre or fabric, such as ramie, flax and hemp can be raised. High dye uptake can be also reached even without the addition of salt, which helps minimize the amount of salt during the dyeing process and reduce the dyeing cost.

Disclosed moisture-absorbing air-permeable silk composite fiber is characterized by being prepared from the following raw materials in parts by weight: 16-19 parts of silk, 13-15 parts of camel hair, 7-9 parts of coral fleece, 10-12 parts of ramie fiber, 8-11 parts of PTT short fiber, 5-7 parts of soybean fiber, 2.3-4.7 parts of milk protein fiber, 0.4-0.8 parts of tea polyphenol, 1.2-3.2 parts of plastic starch, 0.3-0.6 parts of sodium pyrophosphate, 1.2-2.4 parts of cocounut oil essence, 100-110 parts of 1-butyl-3-methylimidazolium dibutyl phosphate, 110-120 parts of 1-ethyl-3-methylimidazolium diethylphosphate, 1-2 parts of frankincense, 0.5-0.9 parts of sediment of human urine, 0.6-0.8 part of flos lonicerae, 2-4 parts of an auxiliary agent, and proper amount of water. By adding ramie fiber, the silk composite fiber has functions of resisting bacteria, inhibiting bacteria, eliminating and adsorbing odor, absorbing moisture and breathing, and the like, and by adding tea polyphenol, the improved silk composite fiber also has effects of resisting radiation, being smooth and light, keeping warm and resisting static electricity.

The invention discloses a method for leaching metallic copper from a waste printed circuit board by using ionic liquid. The method comprises the following steps of: cutting the waste printed circuit board into pieces; crushing by using a universal pulverizer; screening; baking a selected sample of which the grain size is 0.25-0.5mm; weighing the sample in a conical flask; adding 30 percent of hydrogen peroxide; then, adding ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate aqueous solution of which the concentration is 10-80 percent to enable solid-to-liquid ratio to be 1g:(7-55mL), wherein the volume ratio of the hydrogen peroxide to the ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate aqueous solution is 1:(1.5-6); capping a thermostatic waterbath vibration tank of 20-80 DEG C and leaching for 1-24 hours, wherein the vibration frequency is 50-250 turns per minute; performing suction filtration on obtained lixivium, washing, enabling volume to be constant, and measuring copper content. According to the method for leaching the metallic copper from the waste printed circuit board by using the ionic liquid, the copper in the waste printed circuit board is leached by using the ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate aqueous solution is used as a leaching agent, wherein the copper content reaches 90-95 percent.

The invention discloses a preparation method of a cellulose based conductive hydrogel. The preparation method comprises the following steps: (1) dissolving microcrystalline cellulose (MCC) with 1-Butyl-3-methylimidazolium chloride, reacting in a N2 protective atmosphere, and adding N,N-methylenebisacrylamide and benzoyl peroxide to prepare a pure microcrystalline cellulose hydrogel; and (2) soaking the pure microcrystalline cellulose hydrogel obtained in the step (1) in a mixed solution of FeCl3 and sodium p-benzenesulfonate, and immersing in a pyrrole water solution to prepare the cellulose based conductive hydrogel. The cellulose based conductive hydrogel prepared by the method has the advantages of uniform stable network structure, excellent conductivity, swelling property and heat stability, favorable electric conductivity and favorable swelling property; and the equilibrium swelling rate can be up to about 500%.

A gel polymer electrolyte comprises polyacrylonitrile, an ionic liquid, a lithium salt and mesoporous molecular sieve SBA-15; the ionic liquid is at least one selected from 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide; the lithium slat is at least one selected from lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoromethanesulfonate and lithium bis(trifluoromethanesulfonyl)imide; polyacrylonitrile is the base material, the lithium salt, the ionic liquid and mesoporous molecular sieve SBA-15 are dissolved in polyacrylonitrile; and the mass ratio of polyacrylonitrile, the ionic liquid, the lithium salt and mesoporous molecular sieve SBA-15 is 1:(0.8-1.5):(0.1-0.3):(0.04-0.08). The gel polymer electrolyte is relatively high in electrical conductivity. The invention also provides a preparation method of the gel polymer electrolyte.

Disclosed long-acting slow-release fragrant silk composite fiber is characterized by being prepared from the following raw materials in parts by weight: 16-23 parts of silk, 5-8 parts of white eider, 8-10 parts of acrylic fiber, 4-7 parts of basalt fiber, 6-8 parts of pearl fiber, 9-12 parts of kendir fiber, 7-9 parts of aloe viscose fiber, 1.2-2.5 parts of matricaria chamomilla extraction liquid, 1.1-2.3 parts of lemon juice, 0.4-0.7 parts of zinc acetate, 1-2 parts of talcum powder, 0.7-0.9 parts of stearic acid, 100-110 parts of 1-butyl-3-methylimidazolium dibutyl phosphate, 105-110 parts of 1-ethyl-3-methylimidazolium diethylphosphate, 2-4 parts of wild chrysanthemum flower, 1-3 parts of scutellaria baicalensis, 3-5 parts of an auxiliary agent, and proper amount of water. The original taste of conventional silk is changed, and the prepared silk composite fiber has the characteristics of durable refreshing fragrance, resistance to worm damaging, good handfeel, high elasticity and the like, gives people refreshing feeling and does not generate yellowing phenomenon.

The invention discloses a preparation method for cellulose graphene composite filament yarn. The preparation method comprises the steps that a) a dispersing agent, graphene oxide and cellulose are mixed and then are dissolved in an ionic liquid aqueous solution so as to prepare a mixed spinning solution, wherein the addition amount of the graphene oxide is 0.5-1 wt% of the addition amount of the cellulose; and b) the obtained mixed spinning solution is subjected to filtration, spinning, solidifying, stretching, washing, bleaching, oiling, drying and winding so as to obtain the cellulose graphene composite filament yarn, wherein ionic liquid is obtained by mixing 1-butyl-3-methylimidazolium chloride, 1,4-bis[1-(3-methylimidazole)]butyl dichloride and 1,4-bis[1-(3-methylimidazole)] butyl biperchlorate. According to the preparation method, experiments show that the prepared cellulose graphene composite filament yarn has excellent mechanical properties, conductivity, anti-static property and stability, the preparation process is simple, the cost is low, the environment is protected, and pollution is avoided.

The present invention provides an ionic liquid or plastic crystal comprising an anion and a cation, the anion comprising [C(SO₂F)₃]⁻, and the cation comprising at least one member selected from the group consisting of 1-ethyl-3-methylimidazolium ([EMI]⁺), N,N-diethyl-N-methyl-(2-methoxyethyl)ammonium ([DEME]⁺), N-methyl-N-propylpyrrolidinium ([Py₁₃]⁺), N-methyl-N-propylpiperidinium ([PP₁₃]⁺), tetramethylammonium ([N₁₁₁₁]⁺), tetraethylammonium ([N₂₂₂₂]⁺), trimethylhexylammonium ([N₆₁₁₁]⁺), triethylhexylammonium ([N₆₂₂₂]⁺), N-methyl-ethylpyrrolidinium ([Py₁₂]⁺), 1-butyl-3-methylimidazolium ([C₄mim]⁺), and 1-hexyl-3-methylimidazolium ([C₆mim]⁺).

The invention discloses down feather composite fibers with a jasmine fragrance, and is characterized in that the down feather composite fibers comprise the following raw materials in parts by weight: 13-16 parts of goose down, 16-21 parts of ox hair, 8-10 parts of glass fibers, 5-8 parts of polynosic, 3-6 parts of conductive fibers, 3-6 parts of jasmine, 1-3 parts of fructus toosendan, 2-4 parts of radix paeoniae rubra, 6-9 parts of mineral wool fibers, 18-22 parts of tobacco straws, 1.2-3.1 parts of triethyl acetyl citrate, 2.1-3.2 parts of propyl acetate, 0.2-0.5 parts of triethyl citrate, 0.6-1.4 parts of a nano pearl powder, 100-110 parts of 1-butyl-3-methylimidazolium acetate, 110-130 parts of 1-butyl-3-methylimidazolium dibutyl phosphate, 3-5 parts of an auxiliary agent, and a proper amount of water. With addition of jasmine, fructus toosendan, radix paeoniae rubra and other components, the down feather composite fibers not only have the jasmine fragrance, but also can effectively remove dirt on the feather composite fibers, and have better conditioning and nursing effects on down feather; and the prepared down feather composite fibers have the advantages of static electricity resistance, large elasticity, good filling power, bacteria resistance, bacteriostasis, wash durability and the like.

Disclosed silk composite fiber with the anticancer function is characterized by being prepared from the following raw materials in parts by weight: 17-21 parts of tussah silk, 10-13 parts of waste eider down, 7-9 parts of cashmere fiber, 11-13 parts of rose fiber, 8-10 parts of alga fiber, 5-8 parts of taxus chinensis fiber, 4-7 parts of far-infrared ceramic fiber, 5.3-6.8 parts of nylon yarn fiber, 20-30 parts of rice washing water, 2-4 parts of dimethyl siloxane, 0.2-0.4 part of soda ash, 3-5 parts of acetyl tributyl citrate, 1.2-3.5 parts of kaolin, 95-105 parts of 1-butyl-3-methylimidazolium dibutyl phosphate, 100-120 parts of 1-ethyl-3-methylimidazolium diethylphosphate, and 3-6 parts of an auxiliary agent. By adding taxus chinensis fiber, once the inside-contained paclitaxel smell forms microcirculation in human body capillary micropores, cancer cell division is effectively inhibiting and cance cell propagation is prevented. Additionally, a plurality of other beneficial compositions are added, and the prepared silk composite fiber is rich in elasticity, bulkiness and flexibility, and the added Chinese herbal medicines are pleasant in smell, are capable of promoting sleep and are free of toxic and side effects.

The invention discloses antibiotic and healthy composite down wadding and a preparation method thereof. The antibiotic and healthy composite down wadding is prepared from the following raw materials in parts by weight: 17-23 parts of white duck down, 5-8 parts of bamboo pulp fibers, 6-9 parts of polyester fibers, 4-7 parts of chitin, 0.3-0.7 part of tea saponin, 4.1-5.8 parts of a carbon nano-tube, 2-4 parts of vermiculite, 0.4-0.7 part of zinc nitrate, 3.2-4.6 parts of methyltrimethoxy silane, 16-20 parts of chlorinated 1-butyl-3-methylimidazolium, 0.05-0.1 part of pomegranate seed oil, 0.05-0.1 part of thyme oil, 0.02-0.04 part of garlic oil, 0.02-0.04 part of ginger oil, 0.02-0.04 part of sodium cocoyl glycinate and 0.1-0.2 part of isopropyl myristate. The composite down wadding is good in heat retention property, strength, flexibility and weather resistance, and moderate in compressibility, air permeability and moisture permeability, also has the efficacies of bacterium resistance, disinfection and ageing resistance and is good in processability and using performance.

The invention discloses a method for synthesizing decynediol ethoxylate. 2,4,7,9-tetramethyl-5 decyne-4,7-diol and ethylene oxide are used as raw materials, ethoxylated decynediol is synthesized through polymerization, acidic ionic liquid 1-butyl-3-methylimidazolium phosphate dihydrogen salt is used as an acidic catalyst and solvent, one or more of the organic bases are used as basic catalysts forreaction, and a product and the catalysts are separated by using ether as an extracting agent to obtain ethoxylated 2,4,7,9-tetramethyl-5-decyne-4,7-diol. The acid-base catalysts have good protectioneffect on the triple bond of alkynol, the product has high product unsaturation, by-products are few and product chroma is low. The components of the whole process are easy to separate, the catalystsand solvent can be recycled, the production cost is low, the process is green and environmentally friendly, and the method can be used for industrial production.

The invention discloses a method for preparing cellulose and graphene compound short fibers. The method comprises the following steps: (a) mixing a dispersant, graphene oxide and cellulose, dissolvingin an ionic liquid aqueous solution to prepare a blend spinning solution, wherein the addition amount of the graphene oxide is 0.1-0.3 percent by weight of the cellulose; and (b) filtering, spinning,solidifying, stretching, rinsing, bleaching, oiling, cutting and drying the blend spinning solution to obtain the cellulose and graphene compound short fibers, wherein the ionic liquid is prepared bymixing 1-butyl-3-methylimidazolium chloride, bi-1,4-bis[1-(3-methylimidazole)] butyldichloride and bi-1,4-bis[1-(3-methylimidazole)] butyl diperchlorate. Experiments indicate that the cellulose and graphene compound short fibers have excellent mechanical performance, anti-electrostatic performance and stable performance, and are simple in preparation process, low in cost, environment-friendly andpollution-free.