92 results about "Tetraglycol" patented technology

A formulation, method and system for the topical, transdermal or transmucosal administration of a therapeutically effective active agent. Particularly, the invention provides a formulation, system and method for enhancing the permeation or penetration of active agents across the dermal or mucosal surfaces of a mammalian subject. The formulation includes a plant extract of the genus Curcuma of the family Zingiberaceae, a germacrone, or a natural or synthetic constituent thereof, which has been found to increase penetration of the active agent across the dermal or mucosal surface. If desired, a secondary permeation enhancer of a polyalcohol, a monoalkyl ether of diethylene glycol, a tetraglycol, or a mixture thereof can be used for certain active agents for optimal permeation enhancement.

The invention discloses a natural dye ecological printing method for a protein fiber fabric. The method comprises the following steps that the protein fiber fabric is pretreated, wherein natural dye is added into tetraglycol and a nonionic surfactant AEO3, the materials are mixed to be uniform and dissolved with a little amount of deionized water, and a natural dye solution is prepared; citric acid and tannic acid are dissolved with a little amount of water separately to prepare a citric acid solution and a tannic acid solution; printing raw paste is added into an enamel beaker, the natural dye solution and the citric acid solution are added into the enamel beaker separately under stirring, the tannic acid solution is lastly added, the solutions are stirred to be uniform, and printing color paste is prepared; the pretreated protein fiber fabric is processed through the printing color paste according to a conventional printing technology. According to the method, a fabric printing method taking urea as an additive is not adopted, and influences on the environment are reduced and the whole printing processing ecological property is improved while it is guaranteed that a good printing effect is achieved.

A Ni3B load carbon composite catalyst for hydrogen production by ammonia borane hydrolysis is a composite catalyst prepared by loading a carbon source carrier with Ni3B active substance, the carbon source carrier is VulcanXC-72, the Ni3B active substance loaded on the carbon source carrier is a crystalline substance with the particle diameter being less than or equal to 10nm, the Ni3B load amount in the composite catalyst is 30-70wt%; a preparation method is as follows: using nickel chloride as a nickel salt, using potassium borohydride as a reduction agent, adding different proportions of a carbon source for synthesis in a tetraglycol solution. The advantages of the Ni3B load carbon composite catalyst are that: a carbon source material in the Ni3B load carbon composite catalyst has a high specific surface area, and can effectively disperse nanoparticles; the Ni3B active substance loaded on carbon has small particle size, large specific surface area and many catalytic active sites, and can significantly improve the activity of the catalyst; the Ni3B load carbon composite catalyst is synthesized in situ by a solution method, and has the advantages of being simple in process, low in cost, easy to implement, and convenient for large-scale popularization and application.

The invention discloses a preparation method of a recyclable surface film of an inferior vena cava filter based on (PEG) polyethylene glycol-like, which comprises the following steps of: feeding the inferior vena cava filter in a plasma polymerization vacuum chamber; when the vacuum degree reaches 0.5Pa, introducing argon gas with the flow of 2.5sccm and carrying out sputter cleaning for 15 minutes under the conditions that the radio-frequency power is 100W and the negative bias voltage is 80V; after the sputter cleaning is finished, vacuumizing the vacuum chamber to be 0.5Pa again; and introducing a reacting gas of tetraglycol dimethyl ether and depositing a plasma polymer thin film for 30-120 minutes under the conditions that the work pressure is 2-5Pa, the radio-frequency power is 5-30W, the negative bias voltage is 80V and the pulse duty factor is 10-100 percent. The inferior vena cava filter prepared by the method disclosed by the invention has strong binding force between the surface-like PEG thin film layer and the inferior vena cava filter and excellent bioremediation performance for resisting protein and cell from adhering.

The invention discloses an amino functionalized superparamagnetism carbon nanosphere and a preparation method of the amino functionalized superparamagnetism carbon nanosphere. The nanosphere comprises a core and an outer layer, wherein the core is wrapped by the outer layer; the nanosphere is characterized in that the core is a ferroferric oxide nano particle, the outer layer is a carbon shell layer, and an amino is connected onto the carbon shell layer. Compared with the prior art, dicyclopentadienyl iron and ferric acetylacetonate are taken as aniron source, a cane sugar or glucose is taken as a carbon source, then the iron source and the carbon source react in a polyethylene glycol or tetraglycol solution, so that the superparamagnetism carbon nanosphere with rich amines on the surface and a core-shell structure is obtained, and the prepared magnetism carbon nanosphere is widely applied to the fields of biology, catalysis, analysis, energy sources, and information storage. Equipment needed in the preparation process is cheap, the reaction raw materials and the solvent are safe and free from toxic, the prepared nanosphere is economical and environment-friendly, is wide in practicality and has wide application prospect.

The invention relates to a method for preparation of benzene, toluene and xylene from ethene cracking C9; an ethene cracking C9 raw material is extracted for separation of aromatic fractions and other non aromatic components, separation of aromatics can be performed in an extraction column, the separation temperature is 50 to 70 DEG C, the feeding weight ratio of an extracting agent to the ethene cracking C9 raw material is 4-10:1, the extracting agent is tetraglycol; the distillation range of aromatics extraction is controlled in the range of 135 to 220 DEG C; unsaturated aromatics are pre hydrogenated for hydrogenation saturation, pre hydrogenated C9 + aromatics is processed for lightening of heavyweight aromatics by catalytic hydrodealkylation method for preparation of the benzene, the toluene and the xylene; according to the method, the conversion rate of X (C9+) aromatics is 61.6 to 62.2; Y (BTX) (benzene, toluene and xylene) yield is 40.8-42.8; and S (BTX) selectivity is 67.96-8.8.

The invention relates to a polyvinylidene fluoride (PVDF) porous hollow fiber membrane and a preparation method thereof. The fiber membrane comprises the following components in percentage by mass: 25 to 40 percent of polyvinylidene fluoride (PVDF) serving as a first polymer P1; 0 to 3 percent of polymethylmethacrylate (PMMA) serving as a second polymer P2; 38 to 54 percent of acetic diethylene glycol ether ester serving as a first diluent D1; and19 to 25 percent of tetraglycol serving as a second diluent D2. The PVDF hollow fiber ultra filter membrane prepared by using the method of the invention has the advantages of excellent chemical stability, pollution resistance and high strength, and can provide high-performance membrane products for MBR crafts.

The preparation method of magnetically soft ferrite magnet includes the following steps: in deionized water adding (wt%) 5-30% of mixture of ethylol methacrylate and tetraglycol diacrylate (accordingto the mixing weight ratio of 10-50:1), 0-20% of water-soluble macromolecular material, 3-20% of dispersing agent and 0.17-2% of initiating agent, mixing them and preparing them into monomer solution, adding the magnetically soft ferrite powder into monomer solution, mixing them to obtain suspension system, pouring the suspension system into foring mould, heating, heat-insulating, demoulding and drying so as to obtain the invented product. The described monomer aqueous solution is non-toxic, and the ammonium persulfate can be adopted as initiating agent.

The invention discloses a lubricant composition containing a corrosion resistant ionic liquid. The composition comprises, by mass, 99.9%-98% of base oil and 0.1%-2% of the corrosion resistant ionic liquid, wherein the base oil is selected from multiply-alkylated cyclopentane with 2 to 5 alkyl chains, the corrosion resistant ionic liquid is obtained by compounding one of benzotriazole diglycol mono methyl ether, benzotriazole triglycol mono methyl ether and benzotriazole tetraglycol mono methyl ether with one of lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoromethanesulfonate and lithium bis(trifluoromethanesulphonyl)imide. The ionic liquid and the lubricant composition can be synchronously synthesized, the process is simple, and the lubricant composition has good corrosion resistance and excellent tribological properties.

The invention provides an intelligent soft material nanofiber membrane of quadrupolar hydrogen bonding cross-linked levorotation and dextrorotation polylactic acid and a preparation method thereof. The preparation method comprises the steps that levorotation lactide, stannous octoate and tetraglycol are added into a reaction bulb, heated to react in a vacuum environment to obtain a levorotation lactic acid soft material; after polytetramethylene glycol is mixed with dextrorotation lactide, stannous octoate is added, and the mixture is heated to react in a vacuum environment to obtain a dextrorotation lactic acid soft material; after the levorotation lactic acid soft material and the dextrorotation lactic acid soft material are added into trichlormethane to be dissolved, a quadrupolar hydrogen bonding cross-linking agent is added, and thermal copolymerization is performed in a vacuum environment to obtain an intelligent soft material of quadrupolar hydrogen bonding cross-linked levorotation and dextrorotation polylactic acid; finally the intelligent soft material of the quadrupolar hydrogen bonding cross-linked levorotation and dextrorotation polylactic acid is dissolved in a tetrahydrofuran solvent containing trichlormethane to be uniformly stirred until completely dissolved to obtain a spinning solution, and the intelligent soft material nanofiber membrane of the quadrupolar hydrogen bonding cross-linked levorotation and dextrorotation polylactic acid is prepared through electrostatic spinning. The prepared intelligent soft material nanofiber membrane has the advantages ofextensibility, tear resistance, self-reparability and good biocompatibility.

The invention discloses an s-triazine ionic liquid used as a lubricant and a preparation method thereof. The ionic liquid is obtained by mixing diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, or tetraethylene glycol monomethyl ether derivatives of s-triazine with lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoromethanesulfonate or lithium bis(trifluoromethylsulfonyl)imide. The ionic liquid has good chemical stability, heat stability and antifriction antiwear performance. The preparation method of the ionic liquid provided in the invention is simple, low in cost, excellent in performance, and suitable for industrial application.

The invention discloses a graphene composite electrode material with excellent electricity storage performance. The graphene composite electrode material with the excellent electricity storage performance is prepared by taking graphene, aluminum hydroxide, magnesium carbonate, oxalic acid and ammonium dihydrogen phosphate as main components, adding polyvinylidene fluoride, tetraglycol, polyoxyethylene laurel ether, tricarboxymethylpropane glycidyl ether, coconut oil, phthalate anhydride, triethanolamine salt, a dispersant, a silane coupling agent and an adhesive, and performing processes of ultrasonic dispersion, stirring and mixing, inert gas environment mixing, spray drying, material coating of an electrode and the like. Therefore, the prepared graphene composite electrode material with the excellent electricity storage performance is reliable in performance, excellent in conductive performance and good in electricity storage performance, has no pollution to the environment, can meet the requirements of industry, and has a relatively good application prospect.

The invention discloses an amphipathic super-paramagnetic and magnetically resonant contrast agent and a method for preparing the contrast agent. In the method, tetraglycol is used as a solvent and oleic acid is used as a surfactant; ferrum acetylacetone and platinum acetylacetone serving as precursors are pyrolyzed at a high temperature under the condition of nitrogen protection so as to obtain an Fcc type FePt magnetic nano magnetically resonant material of which the appearance is spherical and an average grain diameter is 4 nm. The amphipathic super-paramagnetic and magnetically resonant contrast agent obtained by the technical scheme of the invention has high saturation magnetization and high initial susceptibility; furthermore, the amphipathic super-paramagnetic and magnetically resonant contrast agent has excellent reproducibility, very high saturation magnetization and good biocompatibility under biological conditions. The amphipathic super-paramagnetic and magnetically resonant contrast agent integrates the advantages of stability, aqueous solubility and biocompatibility, and reduces the toxicity.

The invention relates to a preparation method of a polyvinylidene fluoride hollow fiber ultra-filtration membrane for drinking water treatment and belongs to the technical field of membrane separation and drinking water treatment. The preparation method comprises the following steps: respectively drying polyvinylidene fluoride and polyarylene sulfide sulfone in a drying machine; proportionally weighing the polyvinylidene fluoride, the polyarylene sulfide sulfone, tetraglycol, N-methyl-2-pyrrolidinone and polyvinylpyrrolidone, and putting into a stirring kettle for stirring and dissolving to obtain a uniform blended high polymer solution; extruding the uniform blended high polymer solution through a filter and a spinning pump, and then extruding a hollow nascent fiber from an annular opening mold; performing cooling and solidification through a cold extraction solution; soaking into reverse osmosis water to remove a membrane diluent mixture, and performing airing to obtain a hollow fiber ultra-filtration membrane product. According to the hollow fiber ultra-filtration membrane prepared through the method, raw materials are safe, sanitary and environment-friendly, and are high in heat resistance and chemical stability. The polyvinylidene fluoride hollow fiber ultra-filtration membrane is high in retention, stable in performance and suitable for being applied to municipal drinking water treatment, produced water is good in quality, and when the membrane is used, yarns are not broken.

The invention relates to a preparation method of a high-performance lithium ion battery negative material Mn2OBO3. The preparation method comprises the following steps of dissolving a boron source into the solvent which is one or the combination of more than two of water, methanol, ethanol, glycol, propanediol, tetraglycol and pentanol to be stirred, and heating the mixture for 20 hours to 24 hours under the condition of 200 to 220 DEG C to obtain a precursor; and calcining the precursor for 5 hours to 12 hours at the temperature of 600 to 750 DEG C to obtain the Mn2OBO3 nano material. The preparation method has the advantages of simplicity in operation, low reaction temperature, small energy consumption, controllability in product appearance and the like. By adopting the simple solvent heating-calcining method, the Mn2OBO3 material in different shapes can be synthesized by selecting different solvent raw materials, and the obtained Mn2OBO3 material has stable electrochemical performance.