4 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 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.

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.