93 results about "Hexylamine" patented technology

The invention belongs to the technical field of preparation of a carbon nano material, and particularly relates to a method for preparing a carbon dot having a high fluorescent quantum yield from citric acid and different nitrogen-containing molecules. The method comprises the following steps: weighing 1-10 mmol of solid citric acid, and dissolving in 10 ml of deionized water; weighing 1-10 mmol of ethylenediamine, ethylamine, propylamine, butanediamine, n-hexylamine, p-phenylene diamine or urea, adding into the citric acid solution, and uniformly stirring; transferring the solution into a hydrothermal or high-pressure microwave reaction kettle, reacting under hydrothermal or microwave conditions, and naturally cooling the reaction kettle to room temperature, thus obtaining a yellow or brown carbon dot water solution; and finally, purifying the carbon dot water solution, evaporating, and drying to obtain pure carbon dot solid powder. The carbon dot solution can send out bright blue fluorescence under the irradiation of a handheld ultraviolet lamp. The invention has wide application prospects in the fields of biological imaging, fluorescent printing and the like.

A material that can be used in a wide temperature range is provided. A graphene compound includes graphene or graphene oxide and a substituted or unsubstituted chain group, the chain group includes two or more ether bonds, and the chain group is bonded to the above graphene or graphene oxide through a Si atom. Alternatively, a method for forming a graphene compound includes a first step and a second step after the first step. In the first step, graphene oxide and a base are stirred under a nitrogen stream. In the second step, the mixture is cooled to room temperature, a silylating agent that has a group having two or more ether bonds is introduced into the mixture, and the obtained mixture is stirred. The base is butylamine, pentylamine, hexylamine, diethylamine, dipropylamine, dibutylamine, triethylamine, tripropylamine, or pyridine.

The invention relates to a preparation method for a POSS/PDMAEMA organic/inorganic hybrid material according to a thiol-ene click chemistry method. The preparation method comprises the following steps: obtaining PDMAEMA through synthesis according to an RAFT polymerization method; taking dimethyl phenylphosphine as a catalyst, taking n-hexylamine as a reducer, and conducting a reduction reaction on a dithioester group at the tail end of PDMAEMA to generate sulfydryl; conducting thiol-Michael addition reactions on the double bonds of PDMAEMA containing sulfydryl and POSS containing ethenyl according to the thiol-ene click chemistry method to generate a POSS/PDMAEMA organic/inorganic hybrid material with a temperature/pH dual response. The preparation method has the advantages that the prepared POSS/PDMAEMA organic/inorganic hybrid material is small in size, stable in chemical bond, and uniform in particle diameter; due to a click reaction to PDMAEMA, the hydrophilic performance of POSS is effectively improved; in a water solution, the POSS/PDMAEMA organic/inorganic hybrid material is excellent in temperature sensibility and pH sensibility; due to a special structure and the stimulus response performance, the POSS/PDMAEMA organic/inorganic hybrid material is a new-generation environment-friendly new material product, and can be applied to drug carrying, targeted release, metal ion recovery, environmental pollutant adsorption and other fields.

The invention relates to an aliphatic polyester grafted polyamino acid copolymer and a preparation method thereof. A preparation process of the grafted copolymer comprises the following steps of: performing a ring-opening reaction on amino acid-N-inner carboxylic acid anhydride by taking triethylamine, n-hexylamine and the like as initiators, and removing a protecting group to obtain polyamino acid; and grafting aliphatic polyester obtained by performing ring opening polymerization on initiating esters such as hydroxyethyl acrylate, cinnamic alcohol, coumarin and the like to obtain the aliphatic polyester grafted polyamino acid copolymer. The aliphatic polyester is preferably polylactic acid or poly(epsilon-caprolactone) of which the number average molecular weight is 1,000-30,000; and the amino acid-N-inner carboxylic acid anhydride is preferably gamma-benzyl-L-glutamate-N-inner carboxylic acid anhydride or gamma-benzyl-L-aspartate-N-inner carboxylic acid anhydride. The grafted copolymer has a simple preparation process, high biocompatibility and wide application prospect in the field of biological medical materials, and is provided with a photo-crosslinking group.

The invention discloses water-borne double-component epoxy coating. The water-borne double-component epoxy coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is (1-2):(1.5-2.5); the component A comprises the following raw materials in parts by weight: 20 to 30 parts of diethylenetriamine, 2 to 5 parts of hexamethylenediamine, 2 to 4 parts of 1,3-diamido-hexylamine, 1 to 2 parts of ethylene glycol butyl ether, 1 to 3 parts of propanediol butyl ether, 1 to 3 parts of gamma-aminopropyltriethoxysilane, 35 to 40 parts of water, 1 to 2 parts of a thixotropic agent, 1 to 2 parts of a defoaming agent, 1 to 2 parts of a dispersing agent, 1 to 3 parts of iron oxide red, 1 to 2 parts of zinc phosphate, 1 to 2 parts of aluminium triphosphate, 5 to 10 parts of silica powder, 10 to 15 parts of modified coal ash, 1 to 2 parts of an acrylic acid type thickener, 2 to 8 parts of organobentonite and 1 to 5 parts of quartz powder; and the component B comprises the following raw materials in parts by weight: 40 to 50 parts of water-borne epoxy resin, 10 to 15 parts of acrylic epoxy ester resin and 2 to 5 parts of water.

The resistance of a semiconductor nanoparticle provided with a surface treatment, such as an OH coating or ammonia treatment, against external factors is improved. A semiconductor nanoparticle provided with a surface treatment such as an OH coating or ammonia treatment and having high-emission properties is coated with an organic material, such as hexylamine, dodecylamine, trioctylmethylammonium, tridodecilmethylammonium, and similar organic material, by migrating the semiconductor nanoparticle from an aqueous phase to an organic solvent, such as hexane or toluene, thereby providing it with durability against external factors.

The invention discloses a method for preparing an anti-asthmatic medicament of salmeterol. The method comprises the following steps of: adding paraxylene, parahydroxyphenylacrylic acid, formaldehyde and acid medium into a reactor, heating, cooling, filtering, washing and drying to obtain 3-hydroxymethyl-4-hydroxyl-phenylacrylic acid; adding the 3-hydroxymethyl-4-hydroxyl-phenylacrylic acid into the reactor, then adding oxyful, lipase and ethyl acetate to finally obtain 3-hydroxymethyl-4-hydroxyl-(beta-hydroxy)-phenylpropyl aldehyde, adding the 3-hydroxymethyl-4-hydroxyl-(beta-hydroxy)-phenylpropyl aldehyde and 6-(4-phenylbutoxy)hexylamine into the reactor, heating for reflowing, cooling, filtering, adding sodium borohydride in batches into filtrate, stirring at normal temperature, then evaporating to dryness, extracting, combining organic layers, drying, filtering and evaporating to dryness to obtain a solid, and separating by using the column chromatography to obtain the final product. The invention has novel and short synthetic route, convenient experiment operation, higher yield of the target product and lower production cost.

The invention discloses polyether amine, a production method thereof, and application of the polyether amine in methanol gasoline. The polyether amine can improve intersolubility, water resistance, air resistance, acid-neutralizing capacity of the methanol gasoline simultaneously and simplify an additive formula and the production process of the methanol gasoline. The polyether amine is prepared by addition of hexylamine and ethylene oxide. Experiments prove that: when the polyether amine is used together with butanol or octanol which accounts for 2 to 3 percent of the total weight, the waterresistance of the methanol gasoline is 1 to 2 percent, and when the polyether amine is used together with No.200 solvent oil or C9 aromatic hydrocarbon which accounts for 7 to 8 percent of the total weight, the saturated vapor pressure is less than 65kPa, and the methanol gasoline has the advantages of acid-neutralizing capacity and obvious improvement of a plurality of indexes. Due to the application of the polyether amine, the invention provides a method for producing the methanol gasoline, which has the advantages of simpleness, convenience, high efficiency and lower cost.

The invention relates to a method for synthesizing hexamethylenediamine and co-producing n-hexylamine and cyclohexylimide, which comprises the following steps: simultaneously conveying ammonia gas andcaprolactam into a first reactor, and carrying out ammoniation reaction under the action of a catalyst to obtain ammoniation liquid; and putting ammoniation liquid obtained by the ammoniation reaction into a second reactor, adding a catalyst and a solvent, and carrying out hydrogenation reaction to obtain products hexamethylenediamine, n-hexylamine and cyclohexyleneimine. According to the invention, the method for co-production of three products of hexamethylenediamine, n-hexylamine and cyclohexyleneimine by the same process is innovatively designed, the problems existing in independent production of each product in the prior art are effectively overcome, the process route is simple, the operation is simple, convenient and safe, continuous production can be realized, the product yield ishigh, and the economic benefit is greatly improved; besides, by regulating and controlling the reaction conditions of the process, the proportion of three products, namely hexamethylenediamine, n-hexylamine and cyclohexyleneimine, can be regulated and controlled, so that production is matched with actual market requirements, and the anti-risk capacity and profit capacity of the process are fully improved.

The invention discloses a norbornene zwitterionic monomer 5-norbornene-2,3-dicarboximide-N-hexyl tertiary ammonium propanesulfonic acid. The norbornene zwitterionic monomer is prepared by taking norbornene dianhydride and 1,6-hexane diamine as raw materials to synthesize an intermediate 5-norbornene-2,3-dicarboximide-N-hexylamine, then carrying out nucleophilic substitution reaction on the intermediate and 1,3-propane sultone and carrying out ring-opening. The prepared norbornene zwitterionic monomercontains quaternary ammonium functional groups and sulfonic acid functional groups at the sametime, can be used for preparing an ion exchange membrane and is applied to a proton exchange membrane fuel cell and an all-vanadium redox battery.

The invention discloses a method for synthesizing an intermediate of N-methyl-N-methoxy amide compounds, namely the N, N', N''-trimethyl- N, N', N''-trimethoxy phosphinidene amide(P(NMeOMe)3) reagent, wherein by taking the ether as a solvent and the tri-hexylamine(NEt3) as a catalyst, the phosphorus trichloride(PCl3) reacts with the N-methyl-N-methoxy amine(Me(MeO)NH), generating the reagent. When the P(NMeOMe)3 reagent of the invention is used to synthesize the N-methyl-N-methoxy amide compounds, the benzene or methylbenzene is used as a solvent, and the P(NOMeMe) 3 directly reacts with chiral or non-chiral carboxylic acids, and all types of N-methyl-N-methoxy amide compounds are obtained after processes of filtering, drying and separation. Because the P(NMeOMe)3 is used to synthesize the N-methyl-N-methoxy amide in the invention, the method of the invention has the advantages of simple process, easy collection of materials, mild reaction condition, friendly environment, high synthesized efficiency(the reaction can finish in 30 minutes at a temperature of 60 DEG C. ), high yield( between 89 to 96 percent) and easy after-treatment, and is applied to all types of acids.

The invention relates to a 1,4,5,8-naphthalenetetracarboxylic acid diimide derivative bifluorescence material which has a chemical name of N-(2-ethylhexyl)-N-R- naphthalenetetracarboxylic formyl diimide compound and has a chemical formula; in the formula, R is selected from an a structural formula. A preparation method of the bifluorescence material takes naphthalene tetracarboxylic acid dianhydride of industrial product as raw materials which are first imidized with 2-ethyl-hexylamine to obtain an intermediate (1) N-(2-ethylhexyl)-naphthalene-1,8-dimethyl benzene anhydride-4,5-dicarboximide, and then the intermediate (1) is respectively imidized with 4-amino-1,2,4-triazole or 2-aminopyridine or 2-amino-4,6-dimethylpyrimidine to obtain a target product, and the imidization is that the raw materials are reacted for at least 5 hours at 140-160 DEG C under the protection of nitrogen in organic solvent and in the presence of catalyst zinc acetate.

Provided is a silver particle ink comprising hexylamine, dodecylamine, an oleic acid, silver particles and a solvent, wherein the volume resistivity of a sintered body at 100°C after application to a substrate by spin coating is 8 to 25 muOmega.cm. Also provided are a sintered body of the silver particle ink and a method for manufacturing the silver particle ink. As a result, manufacture can be facilitated when manufacturing the silver particle ink which comprises coated silver particles by a silver amine complex decomposition method, the silver particle ink can be sintered even at low temperatures, the sintered body has a mirror surface, and the volume resistivity is small.

The invention discloses 9-aza-bicyclo[3.3.1] nonane coupled iodine-rich compounds. A preparation method of the compound comprises steps as follows: 9-nitrogen(6'-amino)hexylamine-9-9-aza-bicyclo[3.3.1] nonane-3 alpha-alkylamidophenyl formate and a chloroacetyl triiodoaniline derivative are mixed in an organic solvent in the mole ratio being 1:(1.0-1.5) and subjected to a reaction at the room temperature under the catalytic action of cesium hydroxide for 20-30 h, and a product, namely, the 9-aza-bicyclo[3.3.1] nonane coupled iodine-rich compounds, is obtained. The invention also discloses an application of the 9-aza-bicyclo[3.3.1] nonane coupled iodine-rich compounds as a contrast medium for early diagnosis of breast cancer.

The invention discloses a preparation method of cationic colored copolymer microspheres, and belongs to the field of functional material science. According to the method, a polymerizable disperse dye is copolymerized with a basic monomer and a cationic monomer to prepare the cationic colored copolymer microspheres; and the polymerizable disperse dye is 1-(6-acrylamide hexylamine) anthraquinone, 2-acryloyloxyethyl-4-(anthraquinone-1-carbamoyl) benzoate or 1-(6-acrylamide hexylamine)-4-(methylamino) anthraquinone. According to the cationic colored copolymer microspheres, positive electricity is formed on the surface of the polymer microsphere by utilizing the cationic emulsifier or the cationic comonomer, the cationic colored copolymer has relatively strong bonding force on a negatively charged substrate, can be firmly adsorbed, has relatively good washability without using an adhesive, and also has certain hydrophobicity.

The invention belongs to the technical field of saline and alkaline treatment, and concretely relates to a high-efficiency slow release scale inhibitor and a preparation method thereof. The scale inhibitor is formed by mixing a component A with a component B, and the component A is prepared through dissolving the following components, by weight, 10-30 parts of acrylic acid-sulfonic acid, 10-30 parts of citrate, 10-15 parts of polyaspartic acid, 10-15 parts of sodium gluconate, 1-10 parts of dimethyl sulfoxide, 0.1-1 part of n-hexylamine and 1-3 parts of an inorganic salt in bean slurry, and the concentration of the bean slurry is 100-300 g/L; the component B comprises, by weight, 15-30 parts of a polyacrylamide and/or acrylamide derivative polymer, 15-45 parts of an organic phosphoric acid scale inhibition single dose and 100 parts of water; and the high-efficiency slow release scale inhibitor is prepared through mixing the component A with the component B according to a mass ratio of (3-5):1. The scale inhibitor is suitable for being used in saline and alkaline land, and can effectively remove scales.

The invention discloses a preparation method of a Mn-doped CsPb2ClxBr5-x nanocrystal with adjustable fluorescence. The preparation method comprises the following steps: (1) preparing a PbBr2 precursorand a hexylamine bromine ligand solution; (2) preparing a MnCl2 precursor; (3) preparing a CsBr precursor; and (4) preparing the Mn-doped CsPb2ClxBr5-x nanocrystal. The perovskite nanocrystal is synthesized by adopting a normal-temperature one-pot technology, the preparation process is simple, the spectrum can be regulated, and finally the Mn-doped CsPb2ClxBr5-x nanocrystal material with white light emitting capability can be obtained.

The invention discloses a method for determination of trace organic amine in atmospheric particulate matters, wherein the method comprises the steps: S1, preparation of a standard solution and a derivatization reagent; S2, sample pretreatment; S3, detection wavelength selection; S4, on-machine detection and on-line derivatization; and S5, qualitative and quantitative analysis. Under conditions without tedious offline derivatization at present, the method sensitively and accurately determines seven organic amines of ethanol amine, methylamine, ethylamine, propylamine, butylamine, pentylamine and hexylamine in the atmospheric particulate matters.

The invention discloses a preparation method of a polyether-containing hydrophobic association polymer and application of the polyether-containing hydrophobic association polymer in fracturing fluid. According to the technical scheme, the preparation method comprises the following steps: (1) firstly, carrying out a reaction on lauryl alcohol polyoxyethylene ether and thionyl chloride to obtain an intermediate AEO-23-Cl, and then carrying out a reaction on the intermediate AEO-23-Cl and dimethylaminoethyl methacrylate to obtain a polyether monomer AEOA; (2) reacting the 10-undecenoyl chloride with n-hexylamine to obtain a hydrophobic monomer 10-undecenoyl hexylamine; and (3) adding an initiator into a polyether monomer AEOA, a hydrophobic monomer 10-undecylenyl hexylamine, acrylamide, acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid at 30 DEG C, reacting for 5-10 hours, and drying and pulverizing to obtain the polymer powder HAEOA. The fracturing fluid has excellent dissolving performance, and also has good temperature resistance and shear resistance. The preparation method disclosed by the invention has the characteristics of low cost, high yield and simple preparation process, and the prepared product has excellent quick dissolving performance and has a better application prospect in oil field fracturing and recovery efficiency improvement.

The invention provides a preparation method of a medium and low-temperature collecting agent of phosphorous ores, and relates to the technical field of preparation of ore dressing agents. The preparation method specifically comprises the following steps of adding a hexylamine hydrochloric acid solution into a three-opening flask which is provided with a condensing device, dripping a phosphorous acid solution under the heating condition, heating a to-be-reacted substance to 105 DEG C, then dripping a formaldehyde solution, maintaining the reflux temperature, reacting for 3-6h, mixing the obtained hexylamine bis-methyl phosphonic acid solution and a certain amount of sodium dodecyl sulfate solution, and preparing the medium and low-temperature collecting agent of the phosphorous ores. The collecting agent has the characteristics that the synthesizing is simple and convenient, the cost is low, and the usage amount is small; for the medium and low-temperature floatation of the phosphorous ores, the dressing index is not less than the dressing index of the traditional collecting agent under the high temperature condition.

An N,O-double ligand metal catalyst with a stereo structure and a preparation method. The catalyst has the following general formula; M is a nickel, palladium, cobalt, iron or copper central metal atom; R1 is bromine, chlorine, iodine, methyl, propyl, butyl, phenyl, naphthyl, methoxyl or ethyoxyl; when R2 is aromatic amine or aliphatic amine, R2 is ethylamine, propylanmine, isopropylamine, butylamine, tert-butylamine, hexylamine, or cyclohexylamine. The catalyst of the invention has high light transmittance, a high glass-transition temperature, good thermal stability, oxidation stability, low hygroscopicity, a low dielectric constant, and good processing performance, dissolving performance and adhesion performance.

The invention discloses a weather-proof hydrophobic coating for a plastic pipe surface. The weather-proof hydrophobic coating comprises the following raw materials in parts by weight: 15-30 parts of novolac epoxy, 5-15 parts of alkyd resin, 2-10 parts of modified urea, 0.5-1.5 parts of caprolactam closed IPDI, 0.5-1.5 parts of 1,3-deamino hexylamine, 1-4 parts of nano titanium dioxide, 2-4 parts of polyacrylic acid-2-ethylhexyl ester, 5-15 parts of spherical silica powder, 2-10 parts of calcined argil, 4-8 parts of nano bentonite, 1-3 parts of ammonium dihydrogen phosphate, 1-2 parts of titanate coupling agent, 1-2 parts of methylacryloyloxy propyl trimethoxy silane, 0.5-1.5 parts of stearic acid, 0.5-1.5 parts of palm wax, 1-2 parts of 2-phenyl imidazoline and 1-2 parts of acrylic ester. The weather-proof hydrophobic coating disclosed by the invention has the advantages of smooth smearing surface, good weather resistance and thermal stability and excellent hydrophobic property.