9 results about "Tetraglycol" patented technology

An ink jet ink composition according to an embodiment of the present disclosure is an ink jet ink composition including a coloring material, an organic solvent, and water, in which the organic solvent is one or more kinds selected from triethylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, N-hydroxyethyl-2-pyrrolidone, and ε-caprolactam.

The utility model discloses an aminotetraethylene glycol concentration device, which belongs to the technical field of chemical industry concentration and comprises a tank body, a feed port is arranged above the tank body and is connected with a preheating area, and a detachable filter component is arranged between the feed port and the preheating area; an outlet of the preheating area is connected with an inlet of the heating chamber, a vacuum pump is connected above the heating chamber, the bottom of the heating chamber is connected with the material circulating pump through a circulating pipeline, the material circulating pump is connected with the inlet of the heating chamber through a circulating pipeline, the bottom of the heating chamber is connected with the cooling box, and a detachable moisture absorption unit is arranged on the upper portion of the cooling box. And a discharge hole is formed in the bottom of the cooling box. The preheating area and the heating chamber are combined, so that the heating mode is more uniform, and the preheating efficiency is effectively improved; and the vacuum pump reduces the boiling point of the aminotetraglycol, so that the material can be evaporated at a lower temperature, the decomposition risk of the heat-sensitive material is reduced, the evaporation efficiency is improved, and the concentration period is shortened.

The invention discloses an efficient and energy-saving improved process for synthesizing benzo-15-crown-5 by a one-step method, and relates to the field of chemical production. The invention relates to an efficient and energy-saving improved process for synthesizing benzo-15-crown-5 by a one-step method. The efficient and energy-saving improved process mainly comprises the following operation steps: step 1, mixing catechol and tetraethylene glycol in a solvent; step 2, dropwise adding benzene sulfonyl chloride into the liquid, and controlling the temperature to react; 3, adding sodium hydroxide powder, controlling the temperature, and continuously reacting; according to the invention, benzo-15-crown-5 is directly synthesized by a one-step method, so that the step of self-preparing dichlorotetraethylene glycol without a commercially available intermediate in the traditional process is omitted, and the production time is shortened while the process is simplified; reaction conditions are mild, high-pressure or complex equipment is not needed, and energy consumption is reduced; by-products are sodium benzenesulfonate and sodium chloride, no toxic gas is discharged, solvents such as tetrahydrofuran and the like can be recycled, environmental pollution and cost expenditure are reduced, and the method is more suitable for industrial production.

The invention belongs to the technical field of flexible sensors, and particularly discloses a taro powder hydrogel flexible conductive sensor and a preparation method and application thereof, and the taro powder hydrogel flexible conductive sensor comprises the following raw materials: 5-10 parts of taro powder, 5-10 parts of polyvinyl alcohol, 40-50 parts of tetraethylene glycol, 10-15 parts of potassium pyrophosphate and 100 parts of water. The taro powder hydrogel flexible conductive sensor has the mechanical properties of high stress, high strain, high elasticity and the like; the cable can bear 75Kg of weight without being snapped, has very strong freezing resistance and drying resistance, and can be normally used in an extremely low temperature environment; the compound has the advantages of compatibility with normal cells of human bodies, simple preparation method and the like.

This application relates to the field of TPE materials, and specifically discloses a flame-retardant TPE magnetic material and a preparation method thereof. A flame-retardant TPE magnetic material is prepared from the following raw materials in parts by weight: 5-20 parts of SEBS, 60-80 parts of pretreated magnetic powder, 10-20 parts of flame retardant, 5-15 parts of plasticizer, 4-8 parts of compatibilizer, 2-6 parts of tackifier, 1-3 parts of lubricant, and 0.2-1 part of antioxidant; the pretreated magnetic powder is prepared by modifying magnetic powder, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, tetraethylene glycol diacrylate, coupling agent and alcohol solvent; Preparation method: Mix SEBS, flame retardant, plasticizer, compatibilizer, lubricant and antioxidant, then add pretreated magnetic powder and mix well, extrude, cool and granulate. The flame-retardant TPE magnetic material of this application has good flame retardancy and flexibility, is applied to magnetic data cables, has good magnetic absorption and storage performance, and is not easy to crack after long-term winding and use.

A wellbore fluid includes a base fluid and a swellable fluid loss material comprising core-shell polymer particles. The core-shell polymer particles include a core comprising a nanoparticle, and a shell comprising a polymer coupled to the core, the polymer comprising at least one of a reaction product of acrylamide and 2‑acrylamido-2-methyl-propanesulfonic acid crosslinked with methylene bisacrylamide and tetra ethylene glycol diacrylate, a polyamine, a polyol, a polyvinyl ester, styrene-butadiene rubber, or polymethylmethacrylate. Related methods of operating a wellbore and wellbore fluids are disclosed.

This invention discloses a method for degrading amine-cured epoxy resin. The method involves reacting an alkali metal or alkaline earth metal hydroxide with a high-boiling-point diol for dehydration until no more water vapor is released, yielding an alcohol-alkali solution. The high-boiling-point diol is selected from diethylene glycol, triethylene glycol, and tetraethylene glycol. The amine-cured epoxy resin is then added to the alcohol-alkali solution, and the temperature is raised to degrade the resin until it is completely dissolved. The degradation temperature is controlled at 200-280°C depending on the type and size of the amine-cured epoxy resin. The high-boiling-point diol is recovered by vacuum distillation, and the degradation product is precipitated, washed, and dried. This invention degrades amine-cured epoxy resin using an in-situ generated alcohol-alkali solution at temperatures above 200°C to obtain a soluble polyol. This method has the advantages of high degradation efficiency, degradation at atmospheric pressure, low reagent cost with no volatile corrosiveness, and environmentally friendly, low-toxicity, and easily recyclable solvents.

The invention discloses a preparation method and application of a cross-linked gel polymer electrolyte with high ionic conductivity and high voltage stability at room temperature. The electrolyte is formed in the mode that alkali metal salt, a polymer and a plasticizer are induced to form free radicals under the condition that a light inducer 2, 2-dimethoxy-phenyl acetophenone is irradiated by ultraviolet light, mercaptan-alkene click reaction cross-linking is initiated, the alkali metal salt is sodium bis (fluorosulfonyl) imide or lithium bis (fluorosulfonyl) imide, and the polymer is a polymer or a plasticizer. The plasticizer is tetraethylene glycol dimethyl ether which is used as a solvation carrier and a structural plasticizer. And the room-temperature ionic conductivity can reach 1.2 mS cm, the activation energy can be reduced to 0.109 eV, and the electrochemical stability interface voltage is greater than or equal to 5.3 V, that is to say, high ionic conductivity, high-voltage stability and mechanical ductility are considered at the same time, and the method is suitable for a high-energy-density solid-state battery.

The invention discloses a method for preparing ether by using a solid base catalyst, which comprises the following steps: carrying out contact reaction on raw materials of diethylene glycol and ethylene oxide with a catalyst to obtain a reaction material containing triethylene glycol and tetraethylene glycol, and separating and purifying the reaction material in a rectifying tower to obtain a tetraethylene glycol product and co-produce triethylene glycol. The catalyst is KOH / MgAl2O4-CaO, and the preparation method comprises the following steps: preparing MgAl2O4 by adopting a hydrothermal method, loading CaO on the surface of MgAl2O4 by adopting an excessive impregnation method, and finally impregnating by adopting a KOH solution to obtain the solid composite catalyst. The catalyst provided by the invention is applied to a reaction for preparing triethylene glycol and tetraethylene glycol through a reaction of diethylene glycol and ethylene oxide.