37 results about "Dichloroethyl ether" patented technology

The invention relates to a preparation method of an adsorbing material of metal ions in a water system and particularly relates to a preparation method of a cadmium ion surface imprint adsorbing material. The preparation method comprises the steps of placing functional grafting particles HQ-PHEMA (Hydroxyquinoline-Poly Hydroxyethyl Methylacrylate)/SiO2 into a Cd<2+> ion water solution with the concentration of 0.01 mol/L; adjusting the pH (Potential of Hydrogen) value of a solution system to 5.5 with a sodium hydroxide solution; placing the solution into a constant-temperature oscillator to carry out constant-temperature oscillation; filtering the particles and drying in vacuum; placing the functional grafting particles which are adsorbed with Cd<2+> ions in a saturated manner into a water and ethanol mixed solvent containing the Cd<2+> ions; utilizing the sodium hydroxide solution to adjust the pH value of the system; taking dichloroether as a cross-linking agent to react under the condition that the temperature is 40-50 DEG C for 20-26 hours to form a cross-linking imprint; utilizing a hydrochloric acid solution to repeatedly wash the product to remove template ions, namely the Cd<2+> ions; and drying in vacuum to form the Cd<2+> ion surface imprint adsorbing material.

The invention provides settleability water base grinding fluid and a preparation method thereof. The settleability water base grinding fluid comprises, by weight, the following ingredients: 5-20% of settling agents, 25-60% of antirust agents, 15-40% of lubricating agents, 1-3% of sterilizing agents and the balance water. The settling agents are selected from one or more mixtures of polyethylene dichloro ethyl ether tetramethyl ethylenediamine, polyglycerol and ethylene glycol butyl ether (EGBE). The settleability composite grinding fluid has the advantages of being good in settleability, rapid in defoaming, good in antirust effect, long in service life and high in comprehensive performance cost ratio.

The invention relates to a method for preparing a copolymer of urylene dimethylamino propane and dichlorethyl ether. The method is characterized by comprising the reaction steps as follows: the synthesis of the urylene dimethylamino propane and the synthesis of the copolymer are carried out; catalyst is a mixture of niobium hydroxide and phytic acid; the mol ratio of the niobium hydroxide and the phytic acid is 1.0-6.0:1; the dosage of the catalyst is 1-10 per thousand lity of dimethylamino propylamine; molecular weight regulator is nicotinic acid; the dosage of the nicotinic acid is 0.5-1.5 per thousand; and the invention overcomes the disadvantage that the prior preparation method has high impurity content, bad luster and unstable average molecular weight, thereby causing unstable electroplating effect. The invention has the advantages of good purity and luster, stable average molecular weight, simple synthesis technology, being friendly to the environment, low energy consumption, etc.

The invention discloses a power strip convenient to stabilize. The power strip comprises a power strip box; two symmetrically-arranged action boxes and two symmetrically-arranged exchange boxes are fixed on the inner bottom of the power strip box; an extrusion spring is fixed on the inner bottom of the power strip box; a connecting plate is fixed on the upper end of the extrusion spring; two symmetrically-arranged suction plates and two symmetrically-arranged sliding plates are fixed on the bottom of the connecting plate, and the two suction plates are in sealed sliding connection with the inner walls of the two exchange boxes correspondingly. The power strip has the advantages that when the internal temperature of the power strip rises, the dichloroethyl ether solution in the control boxis heated and evaporated; therefore, a push plate drives a touch plate to move, and the contact plate is in contact with a power connection plate; electromagnetic one-way valves in a first circulatingpipe and a second circulating pipe are opened; the cooling liquid enters the exchange boxes; the cooling liquid can more directly absorb the heat in the power strip box; and the temperature in the power strip box is effectively controlled.

The invention discloses an environment-friendly sterilization algicide, which is prepared from the following raw materials in parts by weight: 8 to 15 parts of isothiazolinone, 10 to 15 parts of glycine betaine, 3 to 6 parts of sodium polysulfide, 0.4 to 2.8 parts of methylamine, 0.01 to 4 parts of acetic ether, 5 to 9 parts of bromine hydantoin, 4 to 8 parts of polydichloroethyl ether tetramethylethylenediamine, 7 to 13 parts of fatty alcohol-polyoxyethylene ether and 28.2 to 62.59 parts of deionized water. Each ingredient in the algicide has good cooperated performance and matched performance; all ingredients achieve the cooperated effects to realize the advantages of wide spectrum, high efficiency, durability medicine effect, strong peeling seepage capability and the like. The efficient compound sterilization algicide has the advantage that the defects of the existing oxidative sterilization algicide are overcome. The sterilization algicide effect comparison result with the similarproducts sold on the market proves that the sterilization algicide provided by the invention has the characteristics of durability, efficiency and stability, and has good popularization values.

The invention discloses a method for improving the vacuum degree of a condenser through using circulating water dosing treatment. The method is characterized in that a scale and corrosion inhibitor, sulfuric acid and a sterilization and alga elimination remover are added to circulating water, wherein the scale and corrosion inhibitor comprises, by weight, 1-3 parts of organic phosphonic acid, 15-20 parts of hydrolyzed polymaleic anhydride, 3-6 parts of sodium polyacrylate and 15-30 parts of benzotriazole; the sterilization and alga elimination remover comprises, by weight, 2-6 parts of isothiazolinone, 10-20 parts of dodecylbenzylammonium chloride and 3-6 parts of dichloroethyl ether; and 1-10 parts by weight of the scale and corrosion inhibitor, 2-5 parts by weight of the sterilization and alga elimination remover and 0.01-0.1 part by weight of concentrated sulfuric acid are added to every 1000 parts by weight of the circulating water. The concentrated sulfuric acid is a sulfuric acid solution with the mass fraction being greater than or equal to 70%. The circulating water is dosed in order to improve the cleanliness of a copper tube, improve the heat transfer of the condenser and reduce the terminal temperature difference of the condenser.

The invention discloses a method for preparing trifluoromethyl-1,2,2-trifluoro-1,2-dichloroethyl ether, which comprises the following steps of: 1) continuously introducing gaseous fluoroxy trifluoromethane thinned by using nitrogen from the lower part of a reaction tower, wherein the content of the fluoroxy trifluoromethane is 5 to 50 volume percent; 2) introducing quantitative liquid 1,2-difluoro-1,2-dichloroethylene from the upper part of the reaction tower to countercurrent contact and react with the gaseous fluoroxy trifluoromethane, controlling the reaction temperature to be between 110 DEG C below zero and 5 DEG C below zero through a heat exchange device, generating the trifluoromethyl-1,2,2-trifluoro-1,2-dichloroethyl ether, and discharging the un-reacted incoagulable gas from the top of the reaction tower for neutralization treatment; and 3) when the tail gas discharged from the top of the reaction tower contains the fluoroxy trifluoromethane or the 1,2-difluoro-1,2-dichloroethylene content of the sampled analysis liquid phase is less than 1 volume percent by detection, terminating the reaction, and stopping introducing the gaseous fluoroxy trifluoromethane. The method has the advantages of low metering requirement, convenience of operation, long service life of equipment and high yield.

The invention relates to a preparation method of 15-crown 5-ether, which comprises the following steps: uniformly stirring triglycol and dioxane in a reaction vessel; adding sodium hydroxide and stirring, heating to 40-60 DEG C; adding a mixed liquor of dichloroethyl ether and dioxane at the temperature lower than 60 DEG C, reacting for 20-24 hours at the temperature of 60-90 DEG C; cooling to room temperature, centrifuging to obtain a filtrate; pumping the filtrate into the reaction vessel and distilling to obtain a distillation substrate; moving the distillation substrate to a stainless steel still, performing vacuum rectification, removing primary fraction to obtain the product. The preparation method has the beneficial effect that comparing with the prior art, the preparation method has the advantages of safe operation, low cost, little three wastes and high yield, and the primary fraction in the reaction can be reutilized.

The invention belongs to the technical field of liquid chromatographic column filler preparation, and particularly relates to an agglomerated high-hydrophilic strong anion exchanger, a preparation method and application of the anion exchanger in liquid chromatographic column filler. The strong anion exchanger is prepared by agglomerating quaternized polyvinyl alcohol to sulfonated polymer microspheres. The quaternized polyvinyl alcohol is prepared by the following steps: dispersing polyvinyl alcohol into water, adding a sodium hydroxide solution and 3-chloro-2-hydroxypropyltrimethyl ammonium, continuously reacting under a stirring condition, pumping, filtering, rinsing and drying. The preparation method has the advantages that high-hydrophilic strong anion exchaner is prepared by agglomerating quaternized polyvinyl alcohol to polyolefine organic copolymer base spheres along with high preparation speed, simple operating process and environmental friendliness, monochloro-methyl-ether or dichloroethyl ether and other virulent reagents can be prevented from being applied, and the defect of hydrophilic shortage of anionic exchanger caused by modification with nanoparticles or carbon nano-tubes can be eliminated.

The invention discloses rapidly coagulating de-cyanophycean modified soil, comprising the following raw materials in parts by weight: 200 to 1200 parts of powdery soil, 20 to 40 parts of polydichloroethyl ether tetramethylethylenediamine, and 20 to 60 parts of polyaluminum chloride, wherein the powdery soil has a particle size of at least 180 meshes. The rapidly coagulating de-cyanophycean modified soil has stable performance, fast response speed of algae removal water, certain anti-interference ability to impurities in sewage, and simple operation when used, is very suitable for large-scale preparation, and provides a solid technical support for large-scale field application of de-cyanophycean materials.

The invention discloses a self-stirring milk cup which comprises a cup body, a heat insulation block is fixed to the bottom of the cup body, a rotating cavity is formed in the heat insulation block, arotating shaft is rotatably connected to the inner bottom of the rotating cavity, and the upper end of the rotating shaft penetrates through the rotating cavity and the bottom of the cup body and extends into the cup body. A plurality of rotating blades are fixed to the circumferential side wall of the upper portion of the rotating shaft, a rotating brush is fixed to the bottom of each rotating blade, and a plurality of driving blades are fixed to the circumferential side wall of the section, located in the rotating cavity, of the rotating shaft. The self-stirring milk cup has the advantagesthat a dichloroethyl ether solution in a power box is driven to be gasified through heat of hot water added during dissolving, so that gaseous dichloroethyl ether is sprayed out at a certain speed under the action of air pressure, the rotating blades rotate along with the dichloroethyl ether, and milk powder in the cup body is stirred through rotation of the rotating blades; the milk can be effectively stirred in time during dissolving, so that the dissolving effect is better, and the embarrassment that the milk is difficult to dissolve without a stirring rod is avoided.

The invention relates to a method for preparing a diethyl ether-alpha, omega-double long-chain alkyl dimethyl ammonium chloride surfactant. A solvent and a basic catalyst are added to a reactor, dichloroethyl ether is added to a dropping funnel, when the dropping temperature is reached, the dichloroethyl ether is added dropwise to the reactor, the reaction is carried out under stirring condition to obtain the product diethyl ether-alpha, omega-double long-chain alkyl dimethyl ammonium chloride surfactant, the obtained liquid product is evaporated to remove the solvent, washed with diethyl ether, and then vacuum dried with acetone to obtain a product. The method has the advantages of short reaction time and high yield.

The invention belongs to the field of soil pollution treatment and particularly relates to a process for treating dichloroethyl ether pollution in soil. After the process disclosed by the invention is adopted, dichloroethyl ether in the soil can be effectively degraded, so that content of the dichloroethyl ether in the soil is obviously reduced. According to the invention, raw materials are rich and are low in price; the process is simple; and the process is easy for implementing large-scale production and is suitable for large-area popularization and application.

The invention belongs to the technical field of chemistry, and particularly relates to a synthetic method of benzethonium chloride. According to the method, dichloroethyl ether, octyl phenol and the like are used as raw materials, synthesis is performed through two steps, meanwhile, in the synthesis process, compared with the prior art, lower temperature is kept, high pressure is not used in the synthesis process, the yield in the synthesis process is higher, and the product has better purity.

The invention relates to a method for preparing 4,4-pyran diethyl dicarboxylate and a derivative thereof. According to the invention, diethyl malonate and substituted dichloroethyl ether are adopted as raw materials; cuprous iodide is used for catalyzing; one or a mixture of compounds selected from potassium tert-butoxide, sodium tert-butoxide and sodium tert-pentoxide is adopted as an alkali, and a reaction is carried out; when the reaction is finished, a solvent is removed by reduced-pressure distillation; and reduced-pressure distillation is continued, such that 4,4-pyran diethyl dicarboxylate or the derivative thereof are obtained. The method provided by the invention has never been reported before. The raw materials are easy to obtain, the reaction method is simple and feasible, and the reaction time is short. The method has high application and market values.

The invention provides a synthetic method for synthesizing 4-ethynyl-tetrahydropyran from 2, 2 '-dichloroethyl ether, which comprises the following steps: (a) reacting a compound shown in a formula (I) with ethyl acetoacetate under the action of potassium carbonate and potassium iodide, carrying out aftertreatment, and carrying out sulfuric acid decarboxylation to obtain a compound shown in a formula (II); (b) removing hydrogen from the compound shown in the formula (II) by using an organic lithium reagent, and reacting with a diester chlorophosphate reagent to obtain a compound shown in a formula (III); and (c) removing the compound shown in the formula (III) by using an alkaline reagent, and reacting with alkyl chlorosilane to obtain a compound shown in a formula (IV). According to the preparation method, starting raw materials, process routes and post-treatment processes are different, the raw materials are simple and easy to obtain, the cost is low, and the preparation method is suitable for laboratory small-scale preparation and industrial production.