190 results about "Ethylene glycol monoethyl ether" patented technology

The invention adopts gas chromatography-mass spectrometry (GC-MS) to originally simultaneously determine residual contents of 9 kinds of organic substances in toy, including ethylene glycol monoethyl ether (EGEE), styrene, trimethylbenzene, isophorone, 2-methoxyethyl acetate, 2-ethoxyethyl acetate, cyclohexanone, bis(2-methoxyethyl) ether, and nitrobenzene. Common detection device is adopted in the method. The method provided by the invention has the advantages of easy popularization, simultaneous detection to save time, improved efficiency, low cost, high detection rate and sensitivity, and high application value in toy production and quality detection.

The invention relates to a thickness-controllable bismuth nanosheet, and a preparation method and application of an alloy, and aims at solving the technical problems that when a traditional metal catalyst is used for converting carbon dioxide into formic acid, the efficiency is low, the overpotential is high, the hydrogen evolution potential is relatively positive, and the stability is poor. The bismuth nanosheet with the thickness of only 0.7nm monatomic layer is obtained for the first time by using salts of bismuth as raw materials, ethylene glycol monoethyl ether as a solvent and a solutionwith strong reducibility such as NaBH4 or LiBH4 as a reducing agent through an aqueous solution reduction method under the protection of an inert gas, and the thickness of the bismuth nanosheet is adjustable. The thickness controlled bismuth nanosheet prepared by the method shows excellent CO2 catalytic reduction performance; the Faradic efficiency of catalyzing CO2 to generate formic acid by using the bismuth nanosheet in the case of overpotential being 330mV can reach 98%; the initial overpotential of the bismuth nanosheet is as low as 80mV; the stability of the bismuth nanosheet is as longas 75h; and even the bismuth nanosheet is treated for 4h at the temperature of 300 DEG C, the thickness and catalytic performance of the bismuth nanosheet hardly change, thus further the fact that the bismuth nanosheet has superhigh stability is verified.

The invention discloses an antibacterial and scrubbing-resistant waterborne coating for a glass door. The waterborne coating is characterized by being prepared from the following raw materials in parts by weight: 34-37 parts of waterborne epoxy emulsion, 13-15 parts of waterborne organosilicone emulsion, 20-24 parts of vinyl acetate/butyl acrylate emulsion, 2-4 parts of triethylene glycol monoethyl ether, 0.3-0.6 part of alkanolamine alkoxy titanate, 0.3-0.5 part of a flatting agent BYK-310, 0.1-0.2 part of nanobacteria cellulose, 0.2-0.4 part of white oil, 0.5-1.0 part of polyethylene glycol methacrylate, 0.4-0.6 part of tetrachloro isophthalonitrile, 0.3-0.5 part of fatty acid polyoxyethylene ether, 0.4-0.7 part of citral, 0.2-0.4 part of cuprous oxide, 3-5 parts of a modified titanium dioxide photocatalyst, 1-2 parts of pigment and 10-15 parts of deionized water. The coating for the glass door has the advantages of excellent water resistance, high hardness, scrubbing resistance and low film forming temperature as well as excellent performance, low cost, strong adhesion after curing and no peeling and is non-toxic and environmentally friendly; by adding a plurality of organic, inorganic, and natural antibacterial agents, the antibacterial property of the coating is enhanced; and by adding modified titanium dioxide photocatalyst, the air can be effectively purified, bacteria can be killed and the deodorant effect, taste removal effect, antifouling effect and the self-cleaning function are achieved.

The invention discloses a coloring agent for a wear-resistant floor, and a preparation method thereof. The coloring agent for the wear-resistant floor is composed by mixing the following e components according to a normal method, by weight, 2-20 parts of nanometer color paste, 80-96 parts of a solvent and 2-6 parts of a light stabilizer, wherein the solvent is one or a mixture of ethanol, isopropanol, cyclohexanone, methyl ethyl ketone, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol diacetate, ethyl acetate, dimethylbenzene and methylbenzene; and the light stabilizer is one or a mixture of a light screener, a ultraviolet ray absorber, a quencher and a radical scavenger. The coloring agent for the wear-resistant floor can penetrate in the wear-resistant floor, is rich is color, has firm color, can bear multiple grind, is not obvious in fade after being grinded; and has relatively good endurance.

The invention discloses efficient natural gas. The efficient natural gas consists of natural gas with purity higher than 95% in percentage by weight, and 0.3-0.5% of a liquid-phase synergistic additive in terms of weight percentage of the natural gas, wherein the liquid-phase synergistic additive consists of the following raw materials: 200# solvent oil, isopropanol, petroleum ether, ethylene glycol monoethyl ether, turpentine, tung oil, isooctyl nitrate, dimethyl carbonate, tert-butylferrocene or ferrocene, methyl tertiary butyl ether or n-octyl ferrocene, p-tert-butylcatechol, azodiisobutyronitrile and polyether. The efficient natural gas, through adding little liquid-phase synergistic additive in the natural gas, can obviously improve burning temperature and burning efficiency; meanwhile, the liquid-phase synergistic additive is low in corrosion and good in volatility on containers.

The invention belongs to the technical field of water treatment, and particularly relates to sustained-release nano-calcium peroxide materials, preparation thereof, and a method for removing chlorohydrocarbon and benzene series from underground water by strengthening and activating the sustained-release nano-calcium peroxide materials through ferrous sulfide. By taking calcium chloride, hydrogen peroxide with the mass fraction being 30% and ammonium hydroxide with the mass fraction being 30% as raw materials and by adding different dispersing agents, an irreversible coagulation phenomenon is avoided in the synthesis process, then by adding different macromolecular polymers such as polyethylene glycol 400 (PEG400), polyvinyl alcohol (PVA) and diethylene glycol monoethyl ether (DEGMME), a film is formed on the surface of nCaO2, and through processes such as washing with water and ethyl alcohol and vacuum drying, the sustained-release nano-calcium peroxide advanced oxidation materials embedded with the various macromolecular polymers are obtained. By applying the oxidation materials, the purposes of efficient and lasting treatment of pollutants and lowering of the repair cost of the underground water in contaminated sites are achieved.

A flexible transparent conductive film coating material of doped graphene and white graphene oriented to a liquid coating process, comprising a corona-treated PET or composite substrate layer, and a conductive paint coated on the surface of the PET or composite substrate layer layer, the conductive coating layer includes the following raw materials in weight percentage: 20-50% isopropanol, 20-50% n-butanol, 10-20% ethylene glycol monoethyl ether, 1-5% acetyl tributyl citrate, Adhesive 5-10%, Span 851-5%, ethyl cellulose 0.8-5%, 20-30 nanometer silver powder 4-10%, 100-400 nanometer silver powder 15-20%, graphene homogeneous solution 0.5-5 %, white graphene homogeneous solution 0.5-5%. The conductive film material has the characteristics of stable conductivity of the film-forming surface, low resistivity, high light transmittance, and strong adhesion. At the same time, the film material makes full use of the special properties of white graphene and graphene materials to achieve high performance after film formation. Transparent, conductive, heat dissipation, wear-resistant and other multiple effects.

The invention discloses a new-typed macromolecular sand-binding agent and making method, which comprises the following steps: adding vinyl acetate, butyl acrylate, acroleic acid and initiator in the composite liquid of deionized water and gelatin; copolymerizing to obtain polymer particle; washing polymer particle; drying to blend with diethylene glycol monoether and ammonia to synthesize the product.

The invention discloses a determination method for insoluble substances in a polymer. The determination method comprises the following steps of a. weighing the polymer, dissolving the polymer completely in ethylene glycol monoethyl ether; b. weighing a 0.40-0.55 [mu]m filter membrane, suction filtering with the 0.40-0.55 [mu]m filter membrane, the insoluble substances being left on the membrane, and suction filtering the filter membrane until the filter membrane is dried; c. taking the filter membrane down, putting the filter membrane into a vacuum drier with a vacuum degree of 450-550 mmHg, drying for 1-1.5 hours at a room temperature, taking out the filter membrane, weighing to obtain the weight of the residual substances; and d. calculating the content of the insoluble substances in the polymer. The content of the insoluble substances in the polymer is calculated by drying and weighing under a vacuum condition at the room temperature. Instrument and equipment used in the method are easily available and low in cost and can be easily popularized.

The invention provides a preparation method for Tadalafei I type. The preparation method comprises the following steps of: heating a Tadalafei crude product to the temperature of between 50 and 140 DEG C; dissolving the Tadalafei crude product in ethylene glycol monoethyl ether, ethylene glycol diethyl ether, ethylene glycol monomethyl ether, 1,3-dioxolane or a mixed solvent of two or three thereof; cooling a system to obtain a crystal; and separating to obtain a precipitate. The preparation method has the characteristics of low solvent consumption and high yield. By the method, a pure I type Tadalafei crystal can be obtained; and by the crystallization method, the product can be purified and optical purity can be improved.

The invention discloses a food glass container cleaning agent, which consists of the following ingredients in part by weight: 15 to 25 parts of 85 weight percent phosphoric acid, 8 to 12 parts of polyoxyethylene octylphenol ether, 25 to 35 parts of sodium gluconate, 10 to 15 parts of dodecyl polyoxyethylene ether sodium sulfate, 3 to 5 parts of sodium silicate, 1 to 2 parts of sodium hypochlorite and 1 to 2 parts of ethylene glycol monoethyl ether. The product has the performance such as hard water resistance, sterilization and the like, the grease removal capability is high, stain attached on food glass containers such as soft beverage containers, beer bottles and the like can be removed, the glass bottles are bright and transparent after being washed, and no water mark is left over.

The invention discloses a dustproof and bactericidal type aqueous coating material for glass doors. The dustproof and bactericidal type aqueous coating material is characterized by being prepared from the following raw materials in parts by weight: 34-38 parts of aqueous polyurethane resin, 28-34 parts of acrylic epoxy resin, 8-12 parts of modified styrene-acrylic emulsion, 0.4-0.8 part of polyvinyl alcohol, 1-3 parts of diethylene glycol monoethyl ether, 0.3-0.6 part of alcohol-amine dipyrophosphate acyloxy glycolate titanate, 0.2-0.5 part of polyether modified polyorganosiloxane, 0.2-0.4 part of cellaburate, 0.3-0.6 part of dioctyl sodium sulfosuccinate, 0.4-0.7 part of acetoacetoxy ethyl methacrylate, 0.6-1.2 parts of climbazole, 3-5 parts of ethylene glycol, 0.5-1.0 part of graphene, 1-2 parts of pigment and 10-15 parts of deionized water. According to the aqueous coating material disclosed by the invention, on the basis of high adhesion, water resistance and alcohol acid resistance, the modified styrene-acrylic emulsion is added, so that the bactericidal, dustproof and anti-electrostatic effects of the coating material are improved; added climbazole has spectrum sterilization property, so that the quality of the coating material is further improved; and the coating material disclosed by the invention is simple in operation and low in production cost, does not contain benzene solvents and heavy metals, is harmless to human bodies and environment, is environment-friendly and safe and is suitable for being popularized.

The present invention discloses a Shenmai soft capsule with the functions of nourishing yin and promoting the production of the body fluid. It is made up by using 6 Chinese medicinal materials of red ginseng, adenophora root, ophiopogen tuber, polygonatum root, Chinese yam and lyceum berry and at least on kind of medicinal auxiliary material selected from vegetable oil or polyethylene glycol or ethylene glycol monoethyl ether through a certain preparation process.

The invention discloses a non-phosphorous water-based degreasing agent and a preparation method and application thereof. The non-phosphorous water-based degreasing agent is prepared by non-ionic emulsifier, non-ionic penetrant, sodium metasilicate, sodium carbonate, isopropanol, dichloromethane, ethylene glycol monoethyl ether, low molecular sodium polyacrylate, defoamer, triethanolamine and water. The preparation method comprises the following steps of sequentially adding sodium metasilicate, sodium carbonate, low molecular sodium polyacrylate and triethanolamine into the water during stirring; obtaining a mixed water solution after dissolving; mixing and stirring other components uniformly; adding the other components into the mixed water solution and stirring the mixture uniformly to obtain the non-phosphorous water-based degreasing agent. The non-phosphorous water-based degreasing agent is mainly applied to steel workpiece degreasing and is free of phosphorous, reusable and good in degreasing effect; and a water film on the surface of a test piece after being degreased is uniform, quantity of oil left on the surface of steel is smaller than 0.2g/m2, and good steel surfaces are provided for follow-up phosphating.

A method for combining ethylene glycol monoethyl ether in a fixed bed reactor with ethanol and ethylene oxide as raw materials and ternary composite metal oxide as a catalyst is disclosed. The catalyst is prepared by roasting a Mg-Al-Fe type ternary hydrotalcite precursor. The composition of the precursor is (MgO)15(Al2O3)2.5(Fe2O3)x, wherein the x in the formula is 0.25-2.5. By means of the method, ethylene oxide conversion rate can reach 92.97%, and ethylene glycol monoethyl ether selectivity can reach 86.75%. Simultaneously the method resolves the problem in the prior art that a product is wide in molecular weight distribution and the catalyst and the product are difficult to separate, and greatly improves product quality and production efficiency.

The preparation method comprises the following steps: carrying out esterification reaction on a binary monomer A and a binary monomer B serving as raw materials to obtain an esterification product, and adding a polybasic monomer C into the esterification product or simultaneously adding the polybasic monomer C and a polybasic monomer D for polycondensation reaction to obtain copolyester; wherein the acid value of the copolyester is 30 to 70 mg KOH/g; dissolving the prepared copolyester in water under the conditions that the temperature is 65-90 DEG C and ammonia water and a cosolvent are added; wherein the cosolvent is more than one of isopropanol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol methyl ether acetic ether,dimethylethanolamine and propylene glycol methyl ether. The copolyester prepared by the method disclosed by the invention can be dissolved in water under specific conditions to prepare the water-soluble copolyester coating, does not use an organic solvent, and has the advantages of environmental protection, no pollution, no harm to human bodies and the like; meanwhile, various polar groups are introduced, and hydroxyl and carboxyl can react with an isocyanate curing agent to form cross-linked network structure resin.

The invention discloses a polymeric dispersant for water-based paint and a preparation method thereof. The polymeric dispersant is prepared by polymerizing a styrene-maleic anhydride copolymer, ethylene glycol monoethyl ether and polyethylene glycol. The preparation method comprises the following steps: 1, adding the styrene-maleic anhydride copolymer, ethylene glycol monoethyl ether, polyethyleneglycol and a solvent into a reaction kettle, adding an initiator and a neutralizer aqueous solution, and carrying out a constant-temperature reaction at 60-120 DEG C for 2-12 hours. In the invention,the structure of the polymer dispersant contains a plurality of anchoring groups such as benzene rings, hydroxyl and the like; therefore, the water-based pigment dispersing agent can generate a strong adsorption effect with the surface of pigment, has an excellent dispersing effect on inorganic pigment and organic pigment, and can reduce the viscosity of a dispersing system, improve the flowability and fineness of the dispersing system and improve the storage stability of a coating when being used for dispersing the pigment in a water-based system.