1306 results about "Dimethylamine" patented technology

A Ge—Sb—Te film forming method includes a Sb source material introducing process, a first purging process, a Te source material introducing process, a second purging process, a Ge source material introducing process, a third purging process. An additive gas containing at least one of ammonia, methylamine, dimethylamine, hydrazine, monomethylhydrazine, dimethylhydrazine and pyridine is introduced in at least one of the Sb, Te and Ge source material introducing processes and the first to third purging processes.

A decorative film having an outer layer containing a polyamide composition with the following components: a) from 50 to 100 parts by weight of polyamide prepared from: α) from 70 to 100 mol % of diamine selected from m-xylylenediamine, p-xylylenediamine and mixtures thereof, β) from 0 to 30 mol % of other diamines having from 6 to 14 carbon atoms, and γ) from 70 to 100 mol % of aliphatic dicarboxylic acids having from 10 to 18 carbon atoms and δ) from 0 to 30 mol % of other dicarboxylic acids having from 6 to 9 carbon atoms, and b) from 0 to 50 parts by weight of another polyamide, where a) and b) total 100, having good chemicals resistance, good stress cracking resistance, improved scratch resistance, and improved gloss.

A series of ultrahigh-cross-linked weakly alkaline-anionic exchange resin with both adsorption and exchange functions, which has different specific surface areas and exchange capacities, is prepared from low-cross-linked macroporous polystyrene through chloromethylation, cross-linking reaction, where the nitrobenzene or substituted nitrobenzene is used as solvent and the Lewis acid is used as catalyst, and amination by dimethylamine.

The synthesis process of phenyl dimethylene diisocyanate belongs to the field of isocyanate synthesizing technology. In inert liquid medium, phenyl dimethylamine or its hydrochloride or carbonate reacts with bis(trichloromethyl) carbonate at the temperature of -20 deg.c to -60 deg.c, before heating and reflux reaction for 0.5-5 hr to synthesize phenyl dimethylene diisocyanate. The amount of bis(trichloromethyl) carbonate is 0.5-15 times that of phenyl dimethylamine or its hydrochloride or carbonate. The present invention has stable solid crystal materials, and is environment friendly and suitable for industrial production.

The invention discloses a method for conducting surface chemical copper plating on inorganic particles through dopamine. The method comprises the steps that poly-dopamine layers are made to subside on the surfaces of the inorganic particles in an alkaline solution through the oxidative polymerization effect of the dopamine, then by utilizing functional groups of the poly-dopamine layers, and meanwhile under the effect of an additional auxiliary reducing agent of dimethylamine broane (DMAB), copper ions are reduced to pure copper on the surfaces of the inorganic particles, and a continuous and compact metal copper layer is formed. The method is simple to operate, low in equipment requirement and low in cost; the prepared copper-plated inorganic particles have the characteristics of being low in density, good in conductivity and the like; the method can be used for preparing electricity and thermal conductive coatings, electromagnetic shielding paint, wave-absorbing materials and the like.

Embodiments of the invention provide methods for depositing a material on a substrate within a processing chamber during a vapor deposition process, such as an atomic layer deposition (ALD) process. In one embodiment, a method is provided which includes sequentially exposing the substrate to a first precursor gas and at least a second precursor gas while depositing a material on the substrate during the ALD process, and continuously or periodically exposing the substrate to a treatment gas prior to and / or during the ALD process. The deposition rate of the material being deposited may be controlled by varying the amount of treatment gas exposed to the substrate. In one example, tantalum nitride is deposited on the substrate and the alkylamino metal precursor gas contains a tantalum precursor, such as pentakis(dimethylamino) tantalum (PDMAT), the second precursor gas contains a nitrogen precursor, such as ammonia, and the treatment gas contains dimethylamine (DMA).

Embodiments of the invention provide a method for treating the inner surfaces of a processing chamber and depositing a material on a during a vapor deposition process, such as atomic layer deposition (ALD) or by chemical vapor deposition (CVD). In one embodiment, the inner surfaces of the processing chamber and the substrate may be exposed to a reagent, such as a hydrogenated ligand compound during a pretreatment process. The hydrogenated ligand compound may be the same ligand as a free ligand formed from the metal-organic precursor used during the subsequent deposition process. The free ligand is usually formed by hydrogenation or thermolysis during the deposition process. In one example, the processing chamber and substrate are exposed to an alkylamine compound (e.g., dimethylamine) during the pretreatment process prior to conducting the vapor deposition process which utilizes a metal-organic chemical precursor having alkylamino ligands, such as pentakis(dimethylamino) tantalum (PDMAT).

The invention discloses a preparation method of hydrogenated xylylene diisocynate. The preparation method of the hydrogenated xylylene diisocynate comprises the following steps: (1) performing salt forming reaction on 1,3-cyclohexanol dimethylamine and concentrated hydrochloric acid in a two-phase reaction solvent to obtain amine salt, wherein the two-phase reaction solvent consists of water and an inert organic solvent insoluble in water ; (2) performing photochemical reaction on the ammonium salt obtained in the step (1) and phosgene in an inert solvent by taking N,N-dimethylformamide or N,N-dimethylacetamide as a catalyst to obtain reaction liquid, and performing aftertreatment on the reaction liquid to obtain the hydrogenated xylylene diisocynate. The preparation method of the hydrogenated xylylene diisocynate has the advantages of complete ammonium salt formation, small grain size of the ammonium salt, low viscosity of the ammonium salt, high space-time conversion rate of photochemical reaction, simple process, low cost and the like.

The invention relates to an antibacterial and environment-friendly deodorant of microorganism strains and a preparation method thereof. The traditional method for removing odor generally uses essence to cover up the odor or pumping odor physically or uses ozone to oxidize and degrade the odor or uses a chemical method. The methods also can alleviate the odor to a certain extent, but finally the problem can not be solved really and fundamentally and the essence and chemical deodorization also have secondary pollution. The microbial deodorization technology utilizes the effects of high-efficient absorption, absorption and metabolism of particular microorganism strains which can convert or degrade odorant, to purify the odorous gases of amyl mercaptan, benzene methanethiol, methyl sulfide, ethanethiol, hydrogen sulfide, sulfur dioxide, p-benzyl mercaptan, ammonia, dimethylamine, trimethylamine and carbon disulfide and the like which are emitted from human life areas, domestic sewage and domestic garbage and the like and to convert the odorous components of amyl mercaptan, benzene methanethiol, methyl sulfide, ethanethiol, hydrogen sulfide, sulfur dioxide, p-benzyl mercaptan, ammonia, dimethylamine, trimethylamine and carbon disulfide and the like into matters without harm and odor, thus achieving the purpose of thoroughly improving air quality and protecting health of people. The preparation method utilizes a fermentation method of microorganism strains to prepare deodorant products.

Disclosed is a hair conditioning composition comprising: (a) a cationic surfactant being a salt of behenylamidopropyldimethylamine and l-glutamic acid; (b) a high melting point fatty compound; and (c) an aqueous carrier; wherein the composition has a yield point of at least 5 Pa, and the yield point meeting the following mathematical expression: Y≧5.22X−17.82, wherein Y is yield point of the composition, X is a total amount (percentage by weigh of the composition) of the cationic surfactant and the high melting point fatty compound; and wherein the composition is substantially free of thickening polymers. The composition of the present invention effectively delivers conditioning benefits to hair.

The invention relates to a method for degrading organic pollutants in water by gradient ozone catalytic oxidation, and relates to a gradient ozone catalytic oxidation combination method for degrading organic pollutants in water. By the method, the problem that the conventional advanced oxidation technology has defects during individual use, the problem that the organic pollutants in the water cannot be removed efficiently, the problem that the influence of the pH value and temperature of the water on the method is large, and the problem that high-toxicity byproducts are formed are solved. In the method, water treatment is realized by combining two or three of a process for treating O3 individually, an enhanced catalytic oxidation process for O3 and an O3 / ultraviolet (UV) process sequentially. By the reasonable optimizing and gradient combination of the three treatment modes, the method is suitable for wide pH values and a wide temperature range, the pollutants with intermediate toxicity are controlled to be formed, the toxicity of the pollutants is reduced, the pollutants in the water is degraded efficiently and completely, and the content of oxidative species in effluent is controlled. An efficient oxidation treatment effect is kept at low temperature, and the generation of bromate, nitroso dimethylamine, chlorate, perchlorate, iodate and periodate can be controlled greatly.

Disclosed herein are 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene compositions for use in refrigeration and air conditioning systems, particularly in centrifugal compressor systems. Also disclosed are 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene in combination with at least one bromofluorocarbon, ketones, alcohols, chlorocarbons, ethers, esters, 4-chloro-1,1,2,3,3,4-hexafluorobutene, N-(difluoromethyl)-N,N-dimethylamine, or mixtures thereof, which are azeotropic or near azeotropic.

The present invention relates to foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and an environmentally benign foaming and stabilizing additive comprising a mixture of an ammonium salt of an alkyl ether sulfate surfactant, a cocoamidopropyl hydroxysultaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride and water.

A method for recycling dimethyl formamide relates to a method for recovering dimethyl formamide from waste water by an all-subpressure operation method. The method includes the steps of utilizing conduction oil or low-pressure steam as a heat source, sequentially leading the waste water containing DMF to four subpressure operation towers, and performing subpressure concentration in the first tower and the second tower, subpressure fractionating in the third tower and deacidification in the fourth tower, thereby obtaining finished DMF and methanoic acid. Due to the great decrease of stable operating temperature, the recovery rate of the DMF can reach over 99 percent, and the rate of purity reaches 99.99 percent; the resolution ratio of the DMF and the back evaporation rate of the peracid DMF are obviously reduced, a methanoic acid decomposition tower is cancelled, almost no DMF contains peracid, repeated rectification is not needed, and energy sources are saved by over 10 percent; and meanwhile, the dimethylamine quantity generated by decomposition is little and is completely absorbed by a boiler screen dust collection system without emission.

The invention discloses a compound lightyellow sophora root-selinum japenious seed bacteriostatic lotion and a preparation method thereof. The lotion contains an extract of lightyellow sophora root, amur corktree bark and selinum japenious seed, chlorhexidine acetate, a surfactant, ethanol and water, wherein the surfactant is selected from lauryl dimethylamine oxide, Alcohol Ethoxylate (AEO-9), Lauric Acid Ethoxylate (LAE-9) and nonylphenol polyoxyethylene ether (NPE-10); the extract is prepared by performing reflux extraction on 10-25 percent of lightyellow sophora root, 35-45 percent of amur corktree bark and 35-45 percent of selinum japenious seed by taking 50-70 percent by volume of an ethanol aqueous solution as an extraction solvent for 1-3 times, every time for 1-1.5 hours, combining extracting solutions, filtering, recovering a filtrate under reduced pressure in vacuum, and concentrating with ethanol till the relative density is 1.08-1.12; and the using amount of the ethanol aqueous solution is 6-8 times of the total mass of the lightyellow sophora root, amur corktree bark and selinum japenious seed. The compound lotion consisting of Chinese native medicament and western medicament components has the effects of killing parasites to relieve itching, clearing heat, drying dampness and clearing away heat and toxic materials, can play a role in protecting private skin mucosa and preventing bacteria invasion, has low cost, and is suitable for young and middle-aged women.

The invention relates to a low-viscosity cardanol epoxy resin curing agent which has a structural formula shown on the right. The method for preparing the low-viscosity cardanol epoxy resin curing agent utilizes reaction of cardanol, p / m-benzene dimethylamine and paraformaldehyde to prepare the low-viscosity cardanol epoxy resin curing agent. The low-viscosity cardanol epoxy resin curing agent has no solvent, has no irritation, is nontoxic and environment-friendly, is mild in heat release, low in color, low in viscosity, and moderate in curing speed, can be cured at a low temperature, and simultaneously has superior anti-corrosive and protective properties; and cured products have superior toughness, good strength, superior adhesion and invasive ability on substrates, and superior low surface construction performance, and are normally used on wet and rusty surfaces.

The invention discloses a polymer dielectric medium with low dielectric constant and low loss and a preparation method of the polymer dielectric medium. The polymer dielectric medium comprises the following raw materials: 50-60% of epoxy resin system, and 40-50% of mixed boron nitride nanoparticles, wherein the mixed boron nitride nanoparticle is a mixture of a boron nitride nanotube and a boron nitride nanotube; the epoxy resin system is formed by 100phr of epoxy resin E-51, 85phr of methyl hexahydrophthalic anhydride and 1phr of benzyl dimethylamine in a mixing manner. The thermal breakdown voltage of the polymer dielectric medium is significantly improved by the polymer dielectric material with high heat conductivity and high electric breakdown, the service life is prolonged, the dielectric constant and loss and the heat expansion coefficient are reduced, the mechanical strength and the tenacity are improved, the highest heat conductivity can be up to 5.26W / mK, the volume resistivity is about 1014ohm.cm, the thermal breakdown voltage is about 2-3kV / mm higher than that of the similar heat-conducting polymer dielectric medium, and the dielectric constant and the loss are a little lower than those of pure resin.

Systems and methods for treating contaminated water from gas wells by adding an inorganic coagulant and a low molecular weight polymer to the contaminated water to increase the size of solid particulates in the water and to thereby allow the solid particulates to be filtered or to otherwise be removed from the water are disclosed herein. While the inorganic coagulant can be any suitable coagulant, in some cases the coagulant is selected from aluminum chlorohydrate, polyaluminum chloride, aluminum sulfate, and ferric sulfate. Similarly, the polymer can comprise any suitable polymer, such as epi / dma, a condensation product of epichlorohydrin and dimethyl amine. The described systems and methods can clean the contaminated water so that the water can then be treated in a variety of other manners, which may include reverse osmosis, deionization, treatment with mixed bed deionizers, electro-separation, fraction distillation, distillation, and other suitable water cleansing processes.

The invention discloses a sticking glue for a diamond wire silicon slice and a preparation method. The sticking glue comprises a component A and a component B; the component A includes glycidyl estertype epoxy resin, general bisphenol A epoxy resin, glycidyl ether, filler, defoaming agent, anti-settling agent and coupling reagent; the component B includes modified polythiol, self-prepared m-xylylenediamine prepolymer, accelerant, filler, defoaming agent and anti-settling agent. On the basis of the prior art, the invention modifies the last generation sticking glue and provides the sticking glue for the diamond wire silicon slice and the preparation method thereof. Boiling degumming without acid can be completed without adding degumming factors; the boiling degumming temperature is 10 DEGC lower than the present one; electrical conductivity of solution in cooling water or degumming water is reduced; normal working of cooling water circulation system is guaranteed; the service life ofmachine is prolonged; production efficiency of factory is guaranteed and potential safety hazard of easiness in causing machine failure is solved.

An oil-removing compound and its preparation method. The compound is formed by combining 20-50 wt% of epichlorohydrin-amine cationic polymer, 0-1 wt% of polyacrylamide, 10-25 wt% of an inorganic flocculating agent and the balance water. The preparation method of the compound comprises the following steps of: performing a ring-opening polymerisation reaction between dimethylamine or diethylamine and epoxy chloropropane; adding a cross-linking agent into the reaction system to carry out a crosslinking polymerization reaction so as to obtain the epichlorohydrin-amine cationic polymer; mixing theepichlorohydrin-amine cationic polymer, polyacrylamide and the inorganic flocculating agent with stirring; and adding the mixture into water with stirring to obtain the compound. The compound provided by the invention can treat oil-containing sewage and is widely applied; the preparation method has advantages of mild synthesis condition, easy synthesis technology, low cost and no ''three wastes (waste gas, waste water and industrial residue)'' discharge, and conforms with the requirements of environmental protection.

An organic high-molecular flocculant with high flocculating effect for decoloring the printing and dyeing sewage in textile industry is prepared from epoxy chloropropane, dimethylamine and 1,6-hexyldiamine as cross-linking agent. Its preparing process is also disclosed.

The invention discloses a method for synthesizing tetrabenazine. The method comprises: step one, using a dimethylamine aqueous solution and a formaldehyde aqueous solution as initial materials to be reacted1 to obtain tetramethyl methane diamine; step two, dissolving the tetramethyl methane diamine obtained in the step one in an organic solvent, dropwise adding acetyl chloride and 5- methyl-2-hexanone, and performing amine methylation to obtain an intermediate 3-[(dimethyl amino) methyl]-5-methyl-2-hexanone; and step three, reacting the 3-[(dimethyl amino) methyl]-5-methyl-2-hexanone obtained in the step two with 6,7-dimethoxy-3,4-dihydroisoquinoline hydrochloride to obtain the tetrabenazine. According to the method for synthesizing tetrabenazine, the cheap and accessible materials are used as the initial materials, imine salts serve as amine methylation reagents to perform amine methylation reaction on the 5- methyl-2-hexanone, and accordingly, the region-selectivity of chemical reactions is improved; and water serves as a reaction solvent to prepare the tetrabenazine, so that the operation is simple and convenient, no complex post-processing process exists, and good industrial application prospects are provided.

The invention relates to a treatment method of wastewater containing dimethylamine. The method comprises the following steps of: introducing raw water of the wastewater containing the dimethylamine into a reactor, adding a salt forming agent, controlling the pH value at 3-4, and performing full reaction; hoisting a solution after reaction by a water pump, enabling the solution to enter a first-stage reverse osmosis device, separating by a first-stage membrane, then enabling the produced water to enter a water production box, and enabling first-stage concentrated water to enter a second-stage reverse osmosis device; separating by a second-stage membrane, then enabling the produced water to enter the water production box, and transferring second-stage concentrated water into an external unit for recovering the dimethylamine in the concentrated water; and adding alkali liquor into the water production box, regulating the pH of the water in the water production box to 6.5-7.5, hoisting by the water pump, enabling the water to enter a third-stage reverse osmosis device, separating by the membrane, then enabling the produced water to enter a recycling water box for being recycled for production, enabling third-stage concentrated water to return to the reactor of the raw water of the wastewater containing the dimethylamine for mixing with the raw mater, and then performing circulating treatment. The treatment method has the characteristics of reducing the emission of the wastewater, reducing the environmental pollution, improving the repeated utilization rate of water resources and the like.

The invention relates to an aid suitable for multiple glyphosate salt water agents. The aid has a wide application range, and can be used as a synergist for multiple glyphosate salt water agents including ammonium glyphosate, glyphosate isopropylamine, glyphosate dimethylamine, glyphosate ethanol amine, glyphosate triisopropanolamine, glyphosate triethylamine, glyphosphate-trimesium, and glyphosate potassium. The aid is composed of cocamidopropyl betaine, sodium cocoyl sarcosinate, iso-tridecanol polyoxyethylene ether, alkyl glucoside, ammonium sulfate, and water agent. When the weight of the aid accounts for 5 to 20% of various glyphosate water agents, the aid can guarantee the storage stability of water agents and has an excellent synergetic effect on glyphosate.

The invention provides a dendritic reverse demulsifier used for demulsification of crude oil and a preparation method thereof. The dendritic reverse demulsifier is an aqueous solution with different concentration containing 10%-40% of composite composed of the following materials based on total weight of 100%: 0.1%-10% of dendritic polyamidoamine (PAMAM) from 1.0 to 3.0 generation, 10-45% of epichlorohydrin and 5-22% of dimethylamine (DMA). The preparation method comprises the following steps: firstly synthesizing the dendritic PAMAM from 1.0 to 3.0 generation; taking 1.0, 2.0 and 3.0 generation dendritic PAMAM based on different proportions, adding a proper amount of the epichlorohydrin for reacting at the temperature of below 40 DEG C for 2-4 hours, adding a certain amount of the DMA, adding the epichlorohydrin which accounts for 90% of total added amount to the obtained mixed solution, and heating to 85-95 DEG C for reacting for 1 hour; and adding 10% of the residual epichlorohydrin at three times (once every 20 minutes), and keeping the temperature of 85-95 DEG C until the reaction is completed.

Provided is a preparing method of sarpogrelate hydrochloride, characterized in that 2-((3-methoxyl)styrylcoumarin)phenol mixture containing triphenylphosphine oxide is catalyzed and hydrogenated, and then reacted with epichlorohydrin and dimethylamine to obtain 2-(dimethylamino)-1-(o-(m-methoxyphenylethyl)phenoxymethyl)ethanol, at the same time, triphenylphosphine oxide is separated or not, reacted with succinic anhydride, salt-formed with chlorine hydride, and re-crystallization by a proper solvent, so as to obtain sarpogrelate hydrochloride.

The invention relates to a detection method for simultaneously measuring the residue of tetracyclines (TCs) drugs in royal jelly, in particular to a detection method for simultaneously measuring the residue of 10 veterinary drugs including oxytetracycline, tetracycline, demethylchlortetracycline, chlorotetracycline, doxycycline, 4- epioxytetracycline, 4-epitetracycline, 4-epichlorotetracycline, minocycline and methacycline. The method comprises the following steps: precipitating protein by methanol; then, adjusting the pH value; further carrying out multi-stage purification; and simply and simultaneously measuring the residue of the TCs drugs by the liquid chromatography-mass spectrometry / mass spectrometer (LC-MS / MS). By carrying out the pre-treatment for one time, the invention can measure the residue of up to 10 TCs drugs in the royal jelly, wherein, the lower limits of detection (LLD) of the five TC antibiotics including oxytetracycline, tetracycline, demethylchlortetracycline, chlorotetracycline and doxycycline are 2.0 mug / kg; while the LLDs of the other veterinary drugs including 4- epioxytetracycline, 4-epitetracycline, 4-epichlorotetracycline, minocycline and methacycline are 10.0 mug / kg.

This invention relates to a high-strength herbicidal formulation containing high concentrations of glyphosate monomethylamine or dimethylamine salt and one or more surfactants selected to enhance the herbicidal activity of the glyphosate salts. The formulations exhibit significantly lower viscosity at high concentrations.