34 results about "N-Methylethanolamine" patented technology

The invention provides catalyst for catalytically synthesizing an N-methyl ethanol amine compound and a preparation method thereof. The catalyst adopts a mesopore Al2O3 as a carrier; after modifying the carrier, alkali metal salt is dipped in organic solution of triphenylphosphine, and is dried to obtain the catalyst; and in the catalyst, the substance amount ratio of thetriphenylphosphine to an alkali metal element to an aluminum element is 1: (2.5-7.5): (4.5-9.3). The catalyst has the characteristics of simplicity in preparation, excellent dispersivity, large specific surface area, long service life and the like. The catalyst is applied in the reaction of N methyl ethanol amine organic amine (MMEA, DMEA), so that the conversion rate is high, and the selectivity is good.

The invention relates to a method for preparing a medicine intermediate, namely 1-methyl-3-phenyl-piperazine. Epoxy phenylethane and N-methyl ethanolamine react for ring opening in a methylbenzene solution and further react with thionyl chloride to obtain N-(2- chloroethyl)-N-methyl-2-chloro-2-phenylethylamine hydrochloride, the hydrochloride reacts with toluene sulfonamide and sodium hydroxide in a DMF solution to obtain 1-methyl-4-p-toluenesufonyl-3-phenylpiperazine, the 1-methyl-4-p-toluenesufonyl-3-phenylpiperazine reacts with concentrated hydrochloric acid to remove sulfonyl, and a product is obtained through neutralization extraction and recrystallization. Compared with the prior art, the method for preparing the 1-methyl-3-phenyl-piperazine has the advantages of low cost of selected raw materials, cost conservation, few synthesis steps, convenient and safe operation, simple post-treatment, high reaction yield, high product purity, good quality, and suitability for industrialized application.

The invention discloses a moisture-permeable waterproof film used for a fabric and a fabrication process thereof. According to the invention, a primary coating comprises polyurethane resin, butanone, toluene, water, hexane diisocyanate and N-methylethanolamine, and a first and second surface coatings comprise polyurethane resin, butanone, toluene, water and N-methylethanolamine. The fabrication process comprises the following steps: mixing hexane diisocyanate with main resin; mixing water with butanone to form a solvent which is put into a main resin mixed solution in at least six steps; filtering the mixed solution with a nylon net so as to obtain a filtered main resin mixed solution and carrying out deaeration treatment so as to form a primary coating slurry; preparing a surface coating slurry with the viscosity of a conjugate solution being 3500 to 6000 mpas; coating the primary coating slurry on the surface of release paper to form the primary coating, with coated weight being 4 to 6 g / m<2>; coating the surface coating slurry on the surface of the primary coat to form the surface coatings; and drying the release paper with the surface coatings and peeling the surface coatings off the release paper. According to the invention, the disadvantages that existing hydrophilic moisture permeable processing coating fabrics have nonuniform micropores and easily swell when contacting with water are overcome, and therefore, moisture permeable performance of a fabric itself is improved.

The invention relates to a preparation method of hydroxyl-terminated polyacrylate oligomers, which comprises the following steps: preparing low molecular weight polyacrylate oligomers with controllable molecular weight, such as polybutylacrylate, polyethylacrylate, oly(isooctyl acrylate), polymethyl methacrylate, a block copolymer of butyl acrylate and methyl methacrylate, a block copolymer of themethyl methacrylate and dimethylaminoethyl methacrylate, and the like by adopting atom transfer radical polymerization (ATRP) and using organic halide as an initiating agent; and then carrying out terminal group modification on the polymers by N-methylethanolamine to obtain the hydroxyl-terminated polyacrylate oligomers with controllable molecular weight. The prepared hydroxyl-terminated polyacrylate oligomers can be used for the production of polyurethane. Because the molecular weight of the hydroxyl-terminated polyacrylate oligomers is controllable, a polyurethane material with special performance can be prepared.

The invention discloses a nano coffee carbon function film with windproof air-permeable heat-accumulating warm-keeping effects. Polyurethane resin, water, toluene, butanone, 1,6- diisocyanato-cyclohexan, N-methyl ethanolamine, nano coffee carbon particles, a dispersing agent and a waterproofing agent are weighed according to the proportion of 100:40:20:20:3:1.5:10:1:0.5. The water, the toluene and the butanone are sequentially injected into a reaction kettle to be mixed to form a first resin solution. The 1,6- diisocyanato-cyclohexan and the N-methyl ethanolamine are sequentially injected into a first main resin solution to form a second resin solution. The nano coffee carbon particles are placed into the second resin solution. The dispersing agent and the waterproofing agent are sequentially added into macromolecule inorganic substance composite size. Prepared macromolecule inorganic substance is compounded to prepare film size. The nano coffee carbon function film is provided with even and compact nanoscale micropores, film indexes can reach 8000mm of hydrostatic pressure and 22000g / m<2> / 24h of moisture permeability, and the film combines a natural honeycomb structure of coffee carbon and a far infrared function and has the heat-accumulating warm-keeping antibacterial mite-inhabiting and far infrared health-care effects.

The invention discloses a surface coating slurry used for moisture permeable waterproof fabrics and a preparation technology, the surface coating slurry comprises polyurethane resin, butanone, toluene, water and N-methyl ethanolamine; the preparation technology comprises the following steps: uniformly mixing butanone, water and polyurethane resin to form a main resin solution according to mass proportion of 66-68:3-5:29; placing a mixed liquid of butanone and toluene in the main resin solution to form a main resin mixed solution; mixing N-methyl ethanolamine and main resin mixed solution to form adjusted main resin mixed solution; uniformly mixing water and butanone according to mass proportion of 9:1 to form a solvent; mixing the solvent and the adjusted main resin mixed solution; passing the main resin mixed solution adjusted by the step 5 through a nylon net with 100-200 meshes for filtering to obtain the filtered main resin mixed solution; and standing the filtered main resin mixed solution for at least 2 hours for deaeration treatment. The coating fabrics formed by the surface coating slurry has uniform micropore, and is difficult to be expanded when contacting water.