38 results about "Tri-N-octylamine" patented technology

Provided are a thermoplastic epoxy resin composition comprising (A) an epoxy compound having two epoxy groups in one molecule, (B) a compound having two phenolic hydroxyl groups in one molecule, and at least one compound selected from the group consisting of dihexylamine, diheptylamine, di(2-ethylhexyl)amine, N-ethylhexylamine, trihexylamine, dioctylamine, tri n-octylamine, N,N-dimethyl-n-octylamine, and N,N-dimethyldecylamine as (C) a curing accelerator, and a thermoplastic cured epoxy resin with transparency to visible light produced by curing the thermoplastic epoxy resin composition.

The invention relates to a preparation method of high-purity trimethyl indium, belonging to the technical field of preparing group III metallic compounds in the periodic table of elements. The preparation method disclosed by the invention comprises the following steps: (1) taking diethyl ether as a solvent to prepare a trimethyl indium crude product; (2) carrying out purification to the trimethyl indium crude product obtained in step (1), wherein the purification method comprises the step of adopting a first chromatographic column to carry out purification to the trimethyl indium crude product; and the stationary phase adopted by the first chromatographic column is grafted silica, and the grafted silica is silica of which the surface is grafted with tri-n-octylamine. The preparation method disclosed by the invention adopts the two steps of synthesis and separation and obtains the trimethyl indium of which the purity can reach 6N; above all, the purity method adopted is combined with the solid-liquid separation means, a certain coordination agent is loaded on the silica, not only is the operation simple, but also the purification effect is improved further.

The invention discloses a method for preparing film-coated organic bentonite and its application, and belongs to the technical field of organic bentonite preparation. It solves the technical problem of low adsorption rate of organic bentonite in the prior art. The preparation method first mixes cetyltrimethylammonium bromide, absolute ethanol, and deionized water uniformly to obtain a mixed solution A, mixes the sodium-based bentonite and the obtained mixed solution A uniformly, oscillates in a water bath, and cools to room temperature After centrifugation, washing, drying, and sieving, the organic modified bentonite was prepared; then, tri-n-octylamine and sulfonated kerosene were shaken in a water bath at room temperature to obtain coating liquid B; finally, the organic modified bentonite and coating After the solution B is fully absorbed, the coated organobentonite is prepared after steps such as ultrasonication and aging. The film-coated organic bentonite prepared by the invention can be used to treat cadmium-containing wastewater, and has strong adsorption property and large adsorption capacity.

An anionic supported liquid membrane is produced through adhering a xylene solution of tri-n-octylamine to a polydimethylsiloxane membrane and a cationic supported liquid membrane is produced through adhering a hydrogenated kerosene solution of di(2-ethylhexyl)phosphate to a micro-porous polypropylene membrane against the disadvantages of large water electroosmosis amount and low selectivity of traditional electrodialysis technologies for enriching the diluted organic acid solution, and the two supported liquid membranes have the advantages of high mass transfer rate and high electrical efficiency when substituting traditional solid membranes and used in the electrodialysis enrichment of the diluted organic acid solution.

The invention relates to an efficient purifying method of triethyl gallium, belonging to the technical field of compound purification. The purifying method comprises the following steps of firstly, filtering a crude product of triethyl gallium by using a first chromatographic column with a stationary phase as filler; and then, purifying the filtered crude product of triethyl gallium in a second chromatographic column with a stationary phase as surface grafted filler, wherein the surface grafted filler is filler of which the surface is grafted with tri-n-octylamine. The purifying method disclosed by the invention is combined with a solid-liquid separation means, and a specific coordination agent is loaded on the filler, so that not only is the method simple, but also the purifying effect is further improved.

A method for extracting p-cumylphenol in phenol tar, comprising the steps: (1) phenol tar is subjected to vacuum distillation to obtain key components; the key components are p-cumylphenol, acetophenone, (2) The solvent is added dropwise to the key components, the drop rate is controlled at 55 drops to 65 drops / min, and then the temperature is slowly raised from room temperature to 313K to 323K, and the temperature rises During the process, uniform and slow stirring is required, and the solvent is composed of tri-n-octylamine and octylamine; the mass ratio of tri-n-octylamine to octylamine is: tri-n-octylamine:octylamine=80~85:20~15 The use of this extractant solves the current situation that the purity of p-cumylphenol extracted from phenol tar is not high. At the same time, the mixture of tri-n-octylamine and octylamine also has the advantages of low loss rate and easy recovery as the extractant.

The invention relates to an efficient purifying method of trimethylindium, belonging to the technical field of compound purification. The purifying method comprises the following steps of (1) pouring a crude product of trimethylindium into a first chromatographic column with a stationary phase as filler, naturally and downwards flowing the crude product of trimethylindium by virtue of gravity, and collecting a solution when all the liquid flows up; (2) pouring the collected solution into a second chromatographic column with a stationary phase as surface grafted filler, naturally and downwards flowing the solution by virtue of gravity, and collecting the solution when all the liquid flows up; then, pouring the collected solution into the second chromatographic column, and repeating the operation 2-5 times, wherein the surface grafted filler is filler of which the surface is grafted with tri-n-octylamine; and (3) heating and disassembling the second chromatographic column treated in the step (2), and collecting by vacuumizing at the bottom of the chromatographic column to obtain purified trimethylindium. The purifying method disclosed by the invention is combined with a solid-liquid separation means, and a specific coordination agent is loaded on the filler, so that not only is the method simple, but also the purifying effect is further improved.

The invention discloses a tri-n-octylamine preparation method. The preparation method comprises the following preparation steps: throwing di-n-octylamine, n-caprylic alcohol and an alkaline earth metal oxide catalyst into a reactor; keeping hydrogen atmosphere after nitrogen displacement and hydrogen displacement are performed, reducing the catalyst for 1+ / -0.5 hour at 160 to 190 DEG C; heating and reacting, sampling and performing GC detection when the collected generated water amount reaches 95 percent or above a theoretical amount and the change amount in half an hour does not exceed 2 weight percent, and ending the reaction to obtain crude tri-n-octylamine when the content of the di-n-octylamine is less than or equal to 2 weight percent; cooling, precipitating the crude tri-n-octylamine, and finally, rectifying to obtain the tri-n-octylamine. According to the process route, the initial raw materials come from distillation residues of the tri-n-octylamine; a byproduct of the companyis changed from waste into treasure, so that waste utilization is realized; the emission of waste water, waste gas and solid waste is reduced; the environmental protection is benefited; the economicbenefit is increased.

The invention discloses a refined monochloroacetic acid crystalline product complexometric extraction method. The method comprises: first using the normal hexane solution of aliphatic amine to carry out complexometric extraction to obtain the water solution of the monochloroacetic acid crystalline product (quality purity about 99.0%), standing for layering with the upper phase being an organic phase and the lower phase being a water phase, then using the normal hexane to extract the water phase, and vaporizing the water phase to obtain a solid which is the refined monochloroacetic acid (quality purity above 99.9%). The key in the technology is the employed aliphatic amine is a mixture of tri-n-octylamine and di-n-octylamine. As a complexometric extraction agent, the mixture can effectively remove the main impurity of dichloroacetic acid in the monochloroacetic acid crystalline product.