1036 results about "Methylamine" 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 topical insecticide is provided which can be safe to use and avoids many common deleterious side effects of conventional topical insecticides. The insecticide contains an insecticide and an insect growth regulator effective for killing fleas, flea larvae and flea eggs. The insecticide is formulated by dissolving an insecticidal (tetrahydro-3-furanyl) methylamine derivative and an insect growth regulator (IGR) in a solvent containing a quaternary ammonium salt to increase the solvency of the IGR component, thereby providing an insecticide having high insecticidal activity.

The invention discloses a perovskite solar cell. The perovskite solar cell is characterized by sequentially comprising a conductive glass layer, a compact titanium dioxide film, a porous titanium dioxide film, a methylamine lead iodine polycrystalline film, a hole-transport material layer and an evaporation silver electrode layer. Interface modification is carried out on the methylamine lead iodine polycrystalline film through long-chain alkyl silane coupling agents, and the number of carbon atoms of the long-chain alkyl silane coupling agents is larger than six and smaller than sixteen. The invention further discloses a manufacturing method of the perovskite solar cell. Compared with the prior art, the perovskite solar cell and the manufacturing method have the advantages that as interface modification is carried out through the long-chain alkyl silane coupling agents, the recombination of electrons in the cell can be suppressed, and the stability of the cell in the wet environment can be improved.

The invention discloses a preparation method of pimavanserin. The method comprises the following two steps: firstly, 4-isobutoxy benzene methylamine and carbonyl diimidazole are subjected to acylation reaction to obtain N-(4-isobutoxy phenyl)-1H-imidazole-1-formamide, and the N-(4-isobutoxy phenyl)-1H-imidazole-1-formamide and N-(4-fluorophenyl)-1-methylpiperidine-4-amine are subjected to urea reaction, so as to obtain the pimavanserin. The prepared pimavanserin is good in quality and high in yield, the reagent toxicity is relatively low, the operation is simple and easy to control, and the pimavanserin is suitable for industrial production.

The invention relates to a device and a method for producing sodium methyl taurate, in particular to a device and a method for continuously producing sodium methyl taurate in a pipeline mode. The method comprises the following steps of: adding sodium hydroxyethyl sulfonate, water, methylamine and catalyst into a storage tank, pumping the materials into a continuous pipeline reactor through a boosting pipeline pump under the high pressure of 10 to 25MPa, heating to the temperature of between 150 and 300 DEG C through heat conducting oil, and reacting for 10 to 60 minutes in the pipeline reactor; and feeding the materials into an evaporator after reaction, performing multistage distillation, decolorizing, moisturizing, refining, and thus obtaining the qualified sodium methyl taurate. The device is simple and high in process safety, the reaction conditions are easy to control, continuous production is realized, the yield reaches over 90 percent, the sodium methyl taurate is stable in quality, and large-scale production can be realized with low investment in the industry.

The invention relates to an anti-fogging agent composition and an anti-fogging insulation window film formed thereby, wherein the anti-fogging agent composition comprises 9 to 14 wt% of hydrophilic resin, 55 to 76 wt% of propylene glycol monomethyl ether, 3 to 10 wt% of dimethyl methylamine, 1 to 5 wt% of triethylene diamine, 1 to 5 wt% of leveling agent, 5 to 26wt% of isopropanol and 5 to 24wt% of ethanol; the anti-fogging insulation window film comprises a first transparent polyester film or transparent polyethylene film substrate (2-1), a heat insulation acrylic adhesive layer (3-1), a second transparent polyester film or transparent polyethylene film substrate (2-2), an acrylic adhesive layer (3-2) and a release film (4), which are composited as a whole, wherein the anti-fogging coating (1) is formed by the anti-fogging agent composition; and the heat insulation acrylic adhesive layer (3-1) contains a specific insulation material. According to the invention, the anti-fogging insulation window film is anti-fogging, insulating and safe.

The invention relates to an anion chromatographic column a preparation method thereof, particularly relates to a preparation method of a surface-grafting anion chromatography stationary phase. The method disclosed herein is characterized by: preparing monodispersed linear polystyrene microspheres seeds by dispersion polymerization, activating the seeds, then synthesizing polystyrene-divinyl benzene-glycidyl methacrylate microballoons by one-step seed swelling method, and extracting to remove the pore forming agent; adopting multi-step grafting synthetic method, taking methylamine and 1,4-butanediol diglycidyl ether as raw materials, and introducing a large amount of positively charged quaternary ammonium groups as the anion exchange functional group to the surface of the prepared polystyrene-divinyl benzene-glycidyl methacrylate microballoons; and packing by homogenate method. According to the invention, the method disclosed herein has the advantages of low cost and simple process, the prepared filling material has uniform granularity and has no need to be screened, and the particle size distribution is narrow.

Polysubstituted catechol-based universal solid supports suitable for synthesizing oligonucleotides have been prepared. Following synthesis, cleavage of the oligonucleotide from the solid support and catechol-assisted elimination of the 3′-phosphate group is accomplished by treatment with standard basic media such as ammonium hydroxyde or¹ methylamine.

The invention relates to a preparation method for a SiBN(C) ceramic fiber precursor. The preparation method comprises the steps of synthesizing SiBN(C) ceramic fiber precursor molecules by using methyl dichlorosilane (MeHSiCl2), hexamethyl disilazane (HMDZ), boron trichloride (BCl3) and methylamine (CH3NH2) at a temperature ranging from-40 DEG C to-80 DEG C; removing toluene from an anhydrous toluene solution of the SiBN(C) ceramic fiber precursor molecules; heating to a temperature of 130-300 DEG C to obtain a prepolymer; then adding active group-terminated polydimethylsiloxane or active group-terminated long carbon chain molecules; keeping for 10-100 h at the temperature of 130-300 DEG C; defoaming and melt-spinning. Aiming at the problems of large friability, low strength and the like of the SiBN(C) ceramic fiber precursor, the SiBN(C) ceramic fiber precursor with excellent flexibility is prepared by employing a copolymerization method, thereby providing a foundation for continuous and integrated preparation of SiBN(C) ceramic fibers.

The invention relates to an antifogging agent composition and an antifogging colored window film formed by the same. The antifogging agent composition comprises 9-14wt% of hydrophilic resin, 55-76wt% of propylene glycol methyl ether, 3-10wt% of dimethyl methylamine, 1-5wt% of triethylene-diamine, 1-5wt% of leveling agent, 5-26wt% of isopropanol and 5-24wt% of ethanol. The antifogging colored window film comprises an antifogging agent coating layer (1), a first transparent polyester film or transparent polyethylene film substrate (2-1), a dyed acrylic acid adhesive layer (3-1), a second transparent polyester film or transparent polyethylene film substrate (2-2), an acrylic acid adhesive layer (3-2) and a releasing film (4) which are integrally composited, wherein the antifogging agent coating layer (1) is formed by the antifogging agent composition. The antifogging colored window film is antifogging, attractive, transparent and safe.

The invention relates to a pipeline cleaning agent which comprises the following components by weight: 15-28 parts of organic acid, 20-35 parts of an asurface active agent, 18-30 parts of a penetrating agent and 0.5-3 parts of an acorrosion inhibitor, wherein the surface active agent comprises one or more ofpolyether, butyl cellosolve, coconut oil fatty acid diethanol amide and fatty alcohol-polyoxyethylene ether sulfate sodium; the penetrating agent comprises one or more of alcohol, sodium dodecyl sulfate, sodium dioctyl sulfosuccinate,dodecyl dimethyl betaine, sodium oleoyl methylamine ethanesulfonate and calcium chloride; the corrosion inhibitor comprises one or more of imidazolinequaternary ammonium salts or imidazoline amides. The pipeline cleaning agent can effectively remove grease and dirt in a pipeline to keep the pipeline unblocked, is safe and non-toxic, cannot corrode equipment, is harmless tohuman skin and conforms to emission standards.

The invention relates to the field of solar cells, and provides a manufacturing method of a methylamine lead iodine perovskite solar cell. A photosensitive layer is a methylamine lead iodine perovskite film. The methylamine lead iodine perovskite film is manufactured by the spin coating technology and the anti-solvent dropping and cleaning technology with combination of the solvent annealing technology. The spin coating technology refers to the process that a methylamine lead iodine perovskite CH3NH3PbI3 precursor solution is spin-coated on a PEDOT:PSS film. The anti-solvent cleaning technology refers to the process that the anti-solvent amyl alcohol is dropped in the process of spin-coating the CH3NH3PbI3 methylamine lead iodine perovskite precursor solution so that the perovskite is enabled to be quickly crystalized and precipitated, wherein the anti-solvent amyl alcohol is sec-amyl alcohol or tertiary amyl alcohol. The adopted preparation technology is simple so that the methylamine lead iodine perovskite solar cell of high efficiency and great repeatability without the hysteresis phenomenon can be prepared.

The invention provides an flow battery negative electrode electrolyte based on alizarin or derivatives thereof, and a flow battery adopting the electrolyte as a negative electrode. The electrolyte is an alkaline aqueous solution containing the alizarin or the derivatives thereof. The alizarin and the derivatives contain at least one of alizarin (1,2-dihydroxyanthraquinone), alizarin red (1,2-dihydroxyanthraquinone-3-sulfonic acid) or alizarin fluorin blue (3-alizarin methylamine-N,N-diacetic acid and mixtures thereof. An alkali used in the invention comprises at least one of sodium hydroxide, potassium hydroxide and a sodium hydroxide and potassium hydroxide mixture. The working temperature of the electrolyte is 10-50 DEG C; and the flow battery based on the electrolyte is a traditional structure, and comprises a positive electrode liquid storage tank 1, a positive electrode electrolyte 3, a negative electrode liquid storage tank, the negative electrode electrolyte 4, pumps 7 and 8, and a cation exchange membrane 9 for conducting cations. The active substance of the alizarin flow battery negative electrode electrolyte is bulk anions, and difficultly penetrates through a proton exchange membrane; and the electrolyte disclosed in the invention has the characteristics of no toxicity, no pollution, no rare earth elements, and obvious price advantage.

Problems on catalyst production and catalyst performance with respect to conventional 8-oxygen-membered ring micropore-containing crystalline silicoaluminophosphate molecular sieves as non-equilibrium methylamine synthesis catalysts, are resolved. A chabazite type crystalline silicoaluminophosphate molecular sieve having high purity and high crystallinity and having, on a crystal grain surface, an amorphous oxide layer whose Si/Al atomic ratio is greater than that of the whole crystal grain can be stably produced with high yield with the use of a small amount of structure directing agents by the present method characterized in that hydrothermal treatment conducted in the production of 8-oxygen-membered ring micropore-containing crystalline silicoaluminophosphate sieves is controlled under specified treating conditions. The thickness and composition of the amorphous oxide layer, which exert marked influence on the yield of dimethylamine synthesis, can be easily controlled and reproduced under the conditions of catalyst synthesis according to the invention. Thus, the catalyst of high performance can be stably supplied by the present invention at a low cost with reduced output of waste.

The invention discloses a preparing method for methylamine bromide lead crystals of a large-size perovskite structure. According to the preparing method, PbBr2 is dissolved with a HBr solution to obtain a Pb <2+>-HBr solution; the HBr solution and a CH3NH2 solution are mixed according to the mole ratio of 1:1, and react for two hours at the temperature of 0 DEG C to obtain a CH3NH2Br solution; then the obtained Pb <2+>-HBr solution and the CH3NH2Br solution are mixed and preheated for 48 hours at the temperature of 70 DEG C to obtain a CH3NH3PbBr3 super-saturated solution which is filtered to obtain clear yellow liquid, the clear yellow liquid is preheated for 12 hours in water bath with the temperature of 70 DEG C, the temperature falls to 50 DEG C, and the clear yellow liquid is evaporated at the constant temperature to obtain the CH3NH3PbBr3 crystals. According to the preparing method, in the process, the HBr solution participates in raw material synthesis and is the solvent for growth of the crystals, and the method has the advantages that the synthetic process is simple, and the side reaction is less; the growth device is simple, and the high-quality and large-size crystals can grow.

The invention discloses a preparation method for Aspoxicillin. D-aspartic acid is added into a mixture liquid of sulfuryl chloride and carbinol under a low temperature of zero to prepare D-aspartic acid methyl ester hydrochloride; the obtained D-aspartic acid methyl ester hydrochloride and triethylamine are reacted in ethanol to obtain D-aspartic acid methyl ester educt; the D-aspartic acid methyl ester educt and methylamine aqueous liquid with a concentration of 40 percent are reacted in a room temperature to prepare aspartic formamide; the aspartic formamide, ethyl acetoacetate and potassium hydroxide are reacted in isopropanol to prepare diene salt (D-2-amino-3N-methylamino oxo-propionic acid diene formamide); the diene salt and pivaloyl chloride are reacted in acetone under the catalysis of pyridine to obtain active anhydride; then the active anhydride is condensed and further protected by deacidification to obtain a target product-crude product of Aspoxicillin. The preparation method for Aspoxicillin has the advantages of cheap and easily-obtained reagent, lower toxicity and lower environment pressure, stable and simple technological operation and high yield.

The invention relates to a yield-increasing and energy-saving technology of carbon dioxide stripping urea and equipment of the carbon dioxide stripping urea. A medium-pressure decomposition and absorption technology, a vacuum heat recovery technology and a medium-pressure decomposition and absorption system are adopted additionally; two-section evaporation is changed to three-section evaporation; a rectifying section is arranged at the upper part of a medium-pressure stripping decomposition tower; a heating section is arranged at the lower part of the medium-pressure stripping decomposition tower; lower liquid of a synthetic tower and discharge liquid of a stripping tower are subjected to pressure reduction convergence, and then enter the medium-pressure stripping decomposition tower; urea methylamine liquid is in countercurrent contact with decomposition gas at the rectifying section, is rectified and then enters a heating section tube pass to urge methylamine to be decomposed into carbon dioxide and ammonia; a housing side is heated by steam of 185-195 DEG C, and then enters a medium-pressure methylamine condenser to be condensed; and the urea methylamine liquid at the bottom of the tower enters a urea rectifying tower to be further decomposed. With the adoption of the scheme, the yield-increase difficulty of the carbon dioxide stripping urea is overcome; the productivity of the urea can be improved greatly; an energy consumption index is reduced correspondingly; the problem of a nitrogenous fertilizer enterprise that the productivity of the urea is insufficient after a yield of synthesis ammonia is increased is solved better; and the productivity of the urea can be improved by above 50%.

The invention discloses a water dispersible granule of methylamine-avermectins benzoate and a preparation method thereof, wherein, the water dispersible granule is composed of the following components by weight percentage: 1 to 50 percent of methylamine-avermectins benzoate, 10 to 20 percent of wetting-dispersing agent, 1 to 5 percent of disintegrant, 0.1 to 2 percent of caking agent, and 38.9 to 72 percent of carrier. The invention adopts the special formula to overcome the exsiting technical problems of preparing the water dispersible granule by the methylamine-avermectins benzoate, and processes the methylamine-avermectins benzoate into the water dispersible granule for the first time, the invention not only can reduce the solvent cost, the packing cost and the transport cost, but also has safe storage and transport, and more importantly, and more importantly reduces the pollution of the organic solvent to the environment.

The invention relates to the field of organic synthesis and medicine, and discloses a preparation method for N-substituted methyl-3,5-disubstituted benzylidene base-4-piperidone and biological activity for efficiently inhibiting cell line proliferation such as leukemia, ovarian cancer, breast cancer, liver cancer and esophagus cancer. The method includes: starting from various substituted methylamine and methyl acrylate, sequentially going through Michael addition, Dieckmann condensation, acidolysis and decarboxylation to obtain N-substituted methyl-4-piperidone, and subjecting the N-substituted methyl-4-piperidone to aldol reaction with substituted benzaldehyde to obtain a target compound N-substituted methyl-3,5-disubstituted benzylidene base-4-piperidone. The target compound can selectively and efficiently inhibit cell line proliferation such as leukemia, ovarian cancer, breast cancer, liver cancer and esophagus cancer, and activity of inhibiting carcinoma cell line proliferation is obviously higher than conventional chemotherapeutic 5-fluorouracil.

The invention relates to a preparation method of 2,3,4,5-tetrafluorobenzoyl chloride. The preparation method comprises the following steps: carrying out a condensation reaction on raw materials of 3,4,5,6-tetrafluorophthalic anhydride and methylamine; fluorinating; hydrolyzing; decarboxylating; and chlorizing. An aqueous solution of methylamine is adopted as the raw material to substitute aniline which has a high price in the invention, so the raw material cost is obviously reduced. A solvent used in the fluorination reaction is added ahead of time, so a product can be distilled off together with the solvent after ending the fluorination reaction without separating a condensation product, and a fluorinated product can be obtained through elutriation. A byproduct potassium chloride can be recovered, so product benefits are improved, and the environmental pollution is obviously reduced, thereby the preparation method is suitable for industrialized production.