16 results about "Diethylhydroxylamine" patented technology

There are provided a processing solution containing an alkali compound, water, and a corrosion inhibitor, in which the amount of dissolved oxygen one week after the preparation of the processing solution is 0.2 mg / L or more and 1.5 mg / L or less, and the corrosion inhibitor is at least one selected from the group consisting of N,N-diethylhydroxylamine, 1-thioglycerol, 1-amino-4-methylpiperazine, carbohydrazide, methylethylketoxime, erythorbic acid, and salts thereof, a method for manufacturing the processing solution, and a method for processing a substrate and a method for manufacturing a semiconductor device using the processing solution.

The application relates to a method for preparing micron-grade spherical or spheroidal Cu powder in an aqueous phase, which comprises the following steps: weighing a certain amount of copper sulfate and polydiallyldimethylammonium chloride, adding the copper sulfate and the polydiallyldimethylammonium chloride into a certain volume of water, stirring and dissolving to obtain solution A; the molar concentrations of the copper sulfate and the polydiallyldimethylammonium chloride in the solution A are 30-80 mmol / L and 100-300 mmol / L respectively; weighing a certain amount of a reducing agent N,N-diethylhydroxylamine, adding the reducing agent into a certain volume of water, stirring and dissolving to obtain solution B; mixing the solution A and the solution B, stirring at a certain rotating speed at a temperature of 70-95 DEG C for 4h; then centrifugal separation, washing and vacuum drying to obtain micron-grade Cu powder. The micron-grade Cu powder prepared by the application is spherical or spheroidal, has good dispersibility, uniform particle size distribution, adjustable particle size in the range of 1.0-5.0 mu m, narrow particle size distribution range, uniform morphology, high crystallinity, and is beneficial to further preparation of Ag-coated Cu powder (Cu@Ag).

The invention relates to the technical field of oilfield chemistry, in particular to a reductive dihydroxyl biquaternary ammonium salt, a preparation method thereof and a low-temperature reservoir fracturing fluid assistant.The reductive dihydroxyl biquaternary ammonium salt is prepared according to the following steps that firstly, a needed amount of 2, 3-epoxypropyl trimethyl ammonium chloride is dissolved in water, and a reaction solution is obtained; and 2, introducing nitrogen into the reaction solution to remove oxygen, adding a required amount of diethyl hydroxylamine hydrochloride to obtain a reaction mixed solution, and reacting to obtain an aqueous solution of the reductive dihydroxyl biquaternary ammonium salt. The reductive dihydroxyl biquaternary ammonium salt disclosed by the invention not only has reducibility, but also is a strong polar molecule containing two cations and two hydroxyls, and is small in molecular weight and high in charge density. The low-temperature reservoir fracturing fluid additive prepared from the reductive dihydroxyl biquaternary ammonium salt has dual functions of a low-temperature activator and a clay stabilizer, and can be used for low-temperature reservoir fracturing transformation.

To provide a method for stabilizing diethylhydroxylamine that can improve the stability of diethylhydroxylamine, and to provide a diethylhydroxylamine-containing composition that exhibits excellent stability of diethylhydroxylamine. [Solution] The present invention provides a method for stabilizing diethylhydroxylamine, characterized by including isopropylhydroxylamine in a composition containing diethylhydroxylamine. When the amount of diethylhydroxylamine is X1 [parts by mass] and the amount of isopropylhydroxylamine is X2 [parts by mass], it is preferable to include the isopropylhydroxylamine such that the relationship 0.02 ≤ X2 / X1 ≤ 7.0 is satisfied.

The invention belongs to the technical field of hydrogen peroxide detection, and discloses a method for detecting hydrogen peroxide residues in N, N-diethyl hydroxylamine. The detection method comprises the following steps: preparing a series of N, N-diethylhydroxylamine samples with different hydrogen peroxide concentrations, and dividing the samples into a verification set and a training set; scanning samples of the verification set by using a near-infrared spectrometer, and establishing a data model; scanning samples of the training set by using a near-infrared spectrometer, importing the samples into the data model, and verifying the precision; randomly selecting any sample, scanning the sample for 2-10 times by using a near-infrared spectrometer, and verifying repeatability; and scanning a to-be-detected sample by using the near-infrared spectrometer, and importing a near-infrared spectrum file of the to-be-detected sample into the data model to obtain a predicted value. The near infrared spectrum is adopted for detection, the content of low-concentration hydrogen peroxide can be measured, operation is easy, and the method has the advantages of being high in precision, low in detection limit, safe, environmentally friendly, high in analysis speed, low in cost and high in efficiency.

The invention belongs to the technical field of oxygen-containing acid synthesis of phosphorus, and particularly relates to a phosphorous acid evaporation and concentration process. According to the phosphorous acid evaporation and concentration process, a phosphorous acid crude product is treated by an evaporation and concentration system to obtain a phosphorous acid finished product; wherein the evaporation and concentration system comprises a first-stage falling film evaporator, a second-stage falling film evaporator and a third-stage falling film evaporator which are connected in sequence, auxiliaries are added from the third-stage falling film evaporator, and the auxiliaries comprise polyethylene glycol diamine, N, N-diethyl hydroxylamine and sodium octyl sulfosuccinate. According to the invention, the evaporation and concentration system is designed and the auxiliary agent is supplemented, so that the residual quantity of hydrogen chloride in the phosphorous acid crude product is further reduced, the high-purity phosphorous acid finished product is prepared, and the phosphorous acid finished product can be used in the fields with high purity requirements, such as semiconductor wafer cleaning agents.

This application relates to the technical field of chemical production, specifically to an apparatus and method for the continuous synthesis of diethylhydroxylamine based on gradient-filled titanium-silicon molecular sieves. The apparatus includes a horizontal tubular reactor, which is filled with titanium-silicon molecular sieve catalyst in a three-stage axial gradient along the material flow direction. Specifically: the inlet section is filled with large spherical catalyst particles (2mm < particle size ≤ 3mm); the middle section is filled with medium-sized catalyst particles (1mm < particle size ≤ 2mm); and the outlet section is filled with small-sized catalyst particles (0.5mm < particle size ≤ 1mm). The method specifically involves: mixing diethylamine and a solvent to prepare a preliminary solution; pumping the preliminary solution and hydrogen peroxide separately into the horizontal tubular reactor for reaction; and collecting the reaction liquid at the outlet of the horizontal tubular reactor. This application utilizes a continuous production process to achieve efficient and stable operation of the reaction process, making it suitable for industrial production.

The invention relates to the technical field of boiler protection, and particularly provides a boiler protective agent in a shutdown period and a preparation method thereof, and the boiler protective agent comprises the following raw materials: polyamide wax, dimeticone, N, N-diethylhydroxylamine, tannin, span 80 and superfine silver powder. According to the boiler protective agent in the shutdown period and the preparation method thereof, the inner layer and the outer layer are combined, the effect of uniform water and oxygen corrosion resistance is achieved, and the weight of a boiler corroded is reduced.

The invention provides a novel ship boiler water treatment agent. The invention relates to a novel ship boiler water treatment agent, which comprises the following components by weight: 0.1-1% of hydroquinone; 20 to 30% of DEHA (diethyhexylhydroxylamine 10 to 20% of sodium hexametaphosphate; 5-10% of potassium pyrophosphate; 5-10% of polymaleic acid; 0.1 to 1% of a bio-based surfactant; 5 to 20 percent of NN (N, N-diethylhydroxylamine); and the balance of pure water. The invention provides a novel ship boiler water treatment agent which is prepared by compounding hydroquinone, DEHA, sodium hexametaphosphate, potassium pyrophosphate, polymaleic acid, a bio-based surfactant, NN diethylhydroxylamine and other components, and a dynamic chelation-dispersion system and a nonionic double-effect oxygen removal environment are constructed. According to the present invention, the efficient deoxidizing agent has characteristics of simple preparation process, easy operation, low cost, easy implementation, multi-stage chelating and crystal nucleus steric dispersion on calcium and magnesium ions, significant effects of rapid deoxidizing speed, strong old scale stripping ability and the like, can effectively cope with water quality fluctuation under complex working conditions of ships, can achieve efficient deoxidizing, can provide excellent scale inhibition and old scale self-cleaning functions, and can meet the treatment requirements of complex working conditions of ship boilers.

Provided are a treatment liquid which not only has excellent removability of a metal component and a residue to be removed but also has excellent anticorrosion properties for a metal containing a Cu atom, a method for producing a treatment liquid, a method for treating a substrate using the treatment liquid, and a method for manufacturing a semiconductor device.SOLUTION: Provided are a treatment liquid containing an alkali compound, water, and a corrosion inhibitor, in which the amount of oxygen dissolved after a lapse of one week from the preparation of the treatment liquid is 0. 2mg / L or more and 1. 5mg / L or less, and the corrosion inhibitor is at least one selected from the group consisting of N, N-diethylhydroxylamine, 1-thioglycerol, 1-amino-4-methylpiperazine, carbohydrazide, methyl ethyl ketoxime, erythorbic acid, and salts thereof, a method for producing a treatment liquid, and a method for treating a substrate and a method for manufacturing a semiconductor device using the treatment liquid.SELECTED DRAWING: None

The invention discloses a high-temperature-resistant environment-friendly energy-saving agent suitable for a steam boiler and a preparation method of the high-temperature-resistant environment-friendly energy-saving agent. The high-temperature-resistant environment-friendly energy-saving agent for the steam boiler, which is prepared by compounding nine components including a high-temperature sodium polymaleate homopolymer, single alkylol amine, diethyl hydroxylamine and the like, is adopted for the first time; the energy-saving agent has good scale inhibition and dispersion effects on silicon scale in boiler water, and does not cause secondary pollution to a boiler system; according to the present invention, the energy saving agent and deoxidant integrated formula is provided, such that the energy utilization efficiency is high, the corrosion prevention effect is considered, the addition process is simplified, the purchase cost is reduced, the operation cost is reduced, and the synergistic effect is provided.

This invention relates to the field of heat treatment technology for metallic materials, and discloses a low-temperature annealing method for rolled copper foil, comprising: introducing a mixed vapor containing formic acid and diethylhydroxylamine into a first temperature zone; subjecting the rolled copper foil to a mechanical tensile tension of 15 to 20 MPa at 110 to 120°C in the first temperature zone, utilizing formic acid to reduce the surface oxide layer and combining it with high tension to excite lattice vacancies; subsequently, the copper foil passes through a composite chamber, supported non-contactly by a nitrogen gas cushion and achieving atmosphere isolation; upon entering a second temperature zone, the tension drops sharply to 2 to 4 MPa at 140 to 150°C, utilizing the sudden drop in tension to induce elastic lattice contraction and form a stress potential gradient, driving surface vacancies to migrate into the matrix to promote complete recrystallization; finally, cooling and winding. This invention couples chemical reduction with mechanical stress, achieving deoxidation and complete recrystallization of rolled copper foil at extremely low temperatures, while avoiding contact mechanical abrasion.

The invention discloses a safe and green synthesis method of high-purity diethylhydroxylamine, and belongs to the technical field of chemical synthesis processes. According to the method, triethylamine is taken as a raw material, in an organic solvent, sodium percarbonate (or potassium monohydrogen persulfate composite salt and potassium persulfate) is taken as an oxidizing agent, a composite system formed by sodium tungstate and sodium pyrophosphate is taken as a catalyst, and triethylamine nitrogen oxide is generated through reaction at 20-70 DEG C for 6-20 hours. And after the reaction is finished, filtering to remove solid impurities, concentrating the filtrate to recover the organic solvent, and carrying out reduced pressure thermal cracking on the obtained triethylamine nitrogen oxide at 90-140 DEG C under the absolute pressure of 0.01-0.1 Mpa for 2-5 hours to obtain the diethylhydroxylamine product. The solid oxidizing agent is adopted to replace traditional hydrogen peroxide, water is prevented from being introduced from the source, the problem that the product purity is low due to residual water in a traditional process is solved, the product purity can reach 92.6% at most, the mole yield can reach 89.2% at most, and the organic solvent can be efficiently recycled.

The invention relates to the technical field of chemical production, in particular to a device and a method for continuously synthesizing diethylhydroxylamine based on gradient filling of a titanium silicalite molecular sieve. The device comprises a horizontal tubular reactor which is filled with a titanium silicalite molecular sieve catalyst in an axial three-stage gradient filling manner along the material flowing direction, specifically, an inlet section is filled with a large-particle spherical catalyst; the particle size of the large-particle spherical catalyst is greater than 2mm and less than or equal to 3mm; the middle section is filled with a medium-particle catalyst; the particle size of the medium particle catalyst is greater than 1mm and less than or equal to 2mm; an outlet section small particle catalyst; and the particle size of the small-particle catalyst is greater than 0.5 mm and less than or equal to The method specifically comprises the following steps: mixing diethylamine and a solvent to prepare a primarily prepared solution; respectively pumping the primarily prepared solution and hydrogen peroxide into a horizontal tubular reactor for reaction; and collecting the reaction liquid at the outlet end of the horizontal tubular reactor. Efficient and stable operation of the reaction process is realized by adopting a continuous production process, and the method is suitable for industrial production.

A method for forming a zirconium-containing film comprises the steps of: a) exposing a substrate to a vapor of a zicinium-containing film-forming composition that contains a zirconium precursor; b) introducing a co-reactant into the zirconium-containing film-forming composition; c) depositing at least part of the zirconium precursor onto the substrate to form the zirconium-containing film; and d) repeating the steps of a) and c) until a desired thickness of the zirconium-containing film is deposited on the substrate via a vapor deposition process. The zirconium precursor is tetrakis(dimethylamino)zirconium (TDMAZr). The co-reactant is an amino alcohol reagent such as diethylhydroxylamine.

The invention belongs to the field of organic synthetic chemistry, and discloses a high-efficiency preparation method of 1, 3-propane sultone, which comprises the following steps: 1, chlorination: in the presence of a catalyst, stirring 1, 3-propane sultone and a chlorinating agent in a first organic solvent for reaction, with the catalyst being azodiisobutyronitrile or dibenzoyl peroxide; the chlorinating agent is selected from N-chlorosuccinimide or trichloroisocyanuric acid; 2, elimination reaction: dissolving the 2-chloro-1, 3-propane sultone prepared in the step 1 in a second organic solvent, adding a dehalogenating agent and a polymerization inhibitor, and stirring for reaction; the dehalogenating agent is triethylamine; the polymerization inhibitor is selected from one or two of p-hydroxyanisole, p-tert-butylcatechol, hydroquinone and N, N-diethyl hydroxylamine; and 3, concentrating, crystallizing and drying to obtain a pure product of 1, 3-allylsultone. The method has the advantages of mild and controllable reaction conditions, high product yield, good purity, remarkable reduction of the production cost, simple process steps and suitability for industrial large-scale production.