17 results about "Methyl Sulfate" patented technology

This invention belongs to the field of mineral processing technology and discloses a beneficiation method for hematite ore concentrate by strong magnetic separation. Ultra-high-speed stirring at 3000 r / min to 4000 r / min is used for desorption of inhibitors, providing clean adsorption active sites for the anionic collector. Oleic acid-modified imidazoline methyl sulfate ammonium is used instead of the traditional collector, dodecylamine. Oleic acid-modified imidazoline quaternary ammonium salt compound, with a C18 unsaturated oleic acid group molecular structure, generates strong steric hindrance compared to the acyclic, large-volume groups of dodecylamine. This prevents the reagent molecules from agglomerating at high density on the bubble surface, thus avoiding the formation of thick, viscous bubbles like with traditional dodecylamine, resulting in stronger fluidity and better foam characteristics. This provides a key guarantee for achieving a stable iron concentrate grade of 66%-70% and a recovery rate of 60%-85%.

The invention discloses a sorbose dehydrogenase mutant capable of efficiently degrading vomitoxin, and belongs to the technical field of agricultural biology. The mutant is based on wild type SDH, through rational design and a directed evolution strategy, the mutant comprises three mutation sites F103A, T492E and N427A, the amino acid sequence and the nucleotide sequence of the mutant are SEQ ID NO.1 and SEQ ID NO.2 respectively, the mutant SDHF103A / T492E / N427A can efficiently degrade DON without depending on phenazine methyl sulfate (PMS), and the degradation activity of the mutant SDHF103A / T492E is improved by about two times compared with that of a double mutant SDHF103A / T492E under the condition that PMS does not exist. The method can be applied to preparation of the vomitoxin detoxification enzyme, and has a good application prospect in the aspect of biological detoxification of DON in feeds, grains and food.

The present application relates to a kind of aerial prevention adjuvants and its preparation method and application, aerial prevention adjuvant includes adhesion promoter, synergist, compatible agent and dispersion medium, adhesion promoter includes oleyl ether and fatty alcohol random polyether;Synergist includes polyoxyethylene ether compound, fatty acid amide and polyethylene glycol fatty acid ester;Compatible agent includes first compatible agent, second compatible agent and third compatible agent, first compatible agent is selected from one or more of alkyl benzene sulfonate, alkyl sulfonate, alkyl sulfonate, alkyl sulfate, second compatible agent is selected from one or more of fatty alcohol polyoxyethylene ether sulfate, fatty alcohol polyoxyethylene ether phosphate, and third compatible agent is polyethylene glycol-5 coconut oil base methyl ammonium sulfate.The aerial prevention synergist provided by the present application has good applicability, can effectively improve the performance of pesticide solution, increase the rainwater scouring resistance of pesticide on target, weaken the adverse effects of rainfall on disease and pest control efficiency while improving the stability of various pesticide formulations and fertilizer mix.

The application provides a photosensitive resin composition containing anthracene methyl sulfate quaternary ammonium salt photosensitizer and application thereof, and the photosensitizer is anthracene-9-methylene sulfate quaternary ammonium salt shown in formula (I) or anthracene-9,10-dimethylene sulfate diquaternary ammonium salt shown in formula (II). Compared with the anthracene photosensitizer on the market, the photosensitizer used in the application can effectively avoid the rupture of carbon-oxygen bond caused by p-pi conjugation, thereby significantly reducing the migration of small molecule fragments after initiation, effectively inhibiting the penetration and crystallization of polyethylene protective film, and reducing the risk of line short circuit; the introduction of sulfate quaternary ammonium salt ensures excellent liposolubility and good formula compatibility; it also has unique water solubility, which can effectively reduce the development waste in the later development process; it provides more flexible selection for the formula design of the photosensitive composition; and the photosensitizer can be widely applied in the fields of dry film, paint, coating, ink and molding material and the like.

The invention discloses an anti-aging composition containing a retinol derivative as well as a preparation method and application of the anti-aging composition, and belongs to the technical field of pharmaceutical preparations. The anti-aging composition comprises the following components in percentage by weight: 15-22% of an oil phase; 10 to 15% of polyol; 7.5-12% of a compound emulsifier; 0.5 to 2% of a retinol derivative; and the balance of deionized water. Wherein the compound emulsifier is prepared from 2 to 4 percent of inulin stearyl carbamate, 5 to 7 percent of behenyl alcohol polyether and 0.5 to 1.0 percent of behentrimethylammonium methyl sulfate. Through optimization of an emulsifier system, the problems of low stability and low permeability of a retinol derivative are solved, in addition, on the basis of the components of the anti-aging composition, the following raw materials in percentage by weight are added: 0.5-1.5% of a flavonoid compound, 0.5-1.5% of an emulsifier, 0.5-1.5% of an antioxidant and the balance of water. 0.05 to 0.1 percent of EDTA (Ethylene Diamine Tetraacetic Acid)- 0.15 to 0.3 percent of phenoxyethanol; 0.05 to 0.2 percent of ethylhexylglycerin; the external repair preparation capable of specifically solving the problem of skin oxidative injury induced by ultraviolet rays is prepared and obtained, the formula is mild and stable, the preparation process is simple, and the application prospect is wide.

The invention relates to the technical field of hair conditioners, and particularly discloses a polypeptide softening hair conditioner and a preparation method thereof, the polypeptide softening hair conditioner comprises the following components by weight: 0.05-0.15% of conopeptide, 0.05-0.15% of vitamin C, 0.05-0.15% of vitamin C, and the balance of water. 4-6% of glycerin; 4-6% of cetostearyl alcohol; 6 to 8% of a polydimethylsiloxane component; 2-4% of a cetrimonium chloride compound; 2-4% of squalane; 1-2% of a behentrimethylammonium methyl sulfate compound; 0.5 to 1.5 percent of simmondsia chinensis seed oil; 0.8% to 1.2% of a ceramide compound; 0.8% to 1.2% of hydroxyethyl cellulose; 0.8% to 1.2% of a polyquaternium-7 composite conditioner; 0.8% to 1.2% of a glyceryl stearate and PEG-100 stearate compound emulsifier; 0.5 to 0.7 percent of essence; 0.3-0.5% of a vegetable fat composition; 0.2 to 0.4 percent of a preservative; and the balance of water. The invention has the following beneficial effects: by compounding conopeptide with silicone oil, quaternary ammonium salt and natural grease, a multiple softening mechanism is formed, instant smoothness is provided, a repairing film can be formed on the surface of hair, and the hair toughness is enhanced; and a step-by-step adding and temperature control process is adopted, so that active ingredients such as polypeptide and ceramide are not inactivated in the preparation process.

The application belongs to the technical field of thickening agent preparation, and particularly relates to a preparation method of a thickening agent for fracturing. The preparation method of the thickening agent for fracturing comprises the following steps: (1) pre-emulsification treatment of dicyclopentadiene oxyethyl acrylate; (2) preparation of an aqueous phase; (3) preparation of an initiator solution; (4) polymerization reaction; and (5) post-treatment. The preparation method of the thickening agent for fracturing comprises the following steps: acrylamide is used as a main monomer, dicyclopentadiene oxyethyl acrylate, 4-[(3-methacrylamidopropyl)dimethylammonio]butane-1-sulfonate and isobutylene amide propyl trimethyl ammonium methyl sulfate are used as functional monomers to perform random copolymerization reaction, a multi-element random copolymerization structure of "rigid temperature-resistant chain segment-amphoteric ion salt-resistant chain segment-cationic adsorption chain segment" is constructed, and the prepared thickening agent for fracturing has excellent salt resistance, high-temperature resistance and high tackifying performance.

The invention relates to the field of organic synthesis and molecular medicine, in particular to a preparation method of a phenazine derivative electron mediator 1-methoxy-5-methylphenazine methyl sulfate salt (1-methoxyl PMS) and application of the phenazine derivative electron mediator 1-methoxy-5-methylphenazine methyl sulfate salt in the electron mediator and a sensor. According to the synthesis method, o-vanillin is taken as a starting raw material, 1-methoxyphenazine is synthesized through m-chloroperoxybenzoic acid oxidation (a solvent-free system), sodium periodate water-phase oxidation and alkaline aqueous solution coupling in sequence, and then methylation reaction is performed in a tetrahydrofuran solvent to prepare a target product. According to the method, a water / THF dual-phase system is innovatively adopted, a'one-pot method 'oxidative coupling simplified process is adopted, acidification pulping replaces traditional column chromatography purification, and a noble metal catalyst is not needed in the whole process. The total yield reaches 60%, the heavy metal residue of the product is less than 1ppm, the solvent toxicity is reduced by 90%, the reaction condition is mild (room temperature / normal pressure), and a new green manufacturing scheme is provided for localization of the CCK-8 kit.

This invention provides an aqueous visible light curable composition containing anthracene methyl sulfate sodium salt photoinitiator and its application. This photoinitiator, by introducing sulfate-substituted methylene groups at the 9 and 10 positions of the anthracene ring as the main structural component, and using sodium ions as the balancing cation, has the following technical advantages: symmetrical dual ionic groups impart ultra-high water solubility, allowing dispersion without co-solvents; high photoinitiation efficiency, requiring only 0.1%–5% addition for rapid curing; after modification with methyl sulfate, the maximum absorption wavelength of the anthracene ring conjugated system red-shifts to 405±5 nm, perfectly matching industrial LED light sources; good compatibility with water-based resins, resulting in high coating hardness and good adhesion; and it is odorless, meeting environmental protection requirements.

This invention provides an aqueous zinc-ion battery electrolyte containing a bifunctional additive of hydroxyl quaternary ammonium salt and methyl sulfate, its preparation method, and its application. The electrolyte is composed of soluble zinc salt, a bifunctional additive containing hydroxyl quaternary ammonium salt and methyl sulfate, and chromatographic water. By using the bifunctional additive containing hydroxyl quaternary ammonium salt and methyl sulfate to modify the traditional aqueous zinc-ion battery electrolyte, the zinc anode is protected, and the cycle life of the zinc anode under high utilization efficiency conditions is significantly improved. The hydroxyl groups in the hydroxyl quaternary ammonium salt additive can form hydrogen bonds with water molecules in the zinc ion solvation shell. At the same time, the quaternary ammonium salt has strong electronegativity to constrain the surrounding water molecules, inhibiting water molecule activity and reducing the occurrence of hydrogen evolution reaction. The methyl sulfate additive can be adsorbed on the surface of the zinc anode, inducing selective deposition of Zn along the (002) crystal plane and inhibiting dendrite formation. The two additives, hydroxyl quaternary ammonium salt and methyl sulfate, work synergistically to effectively improve the utilization efficiency of the zinc anode and the cycle life of the aqueous zinc-ion battery.

The invention provides a photosensitive resin composition containing an anthracene methyl sulfate quaternary ammonium salt photosensitizer and application of the photosensitive resin composition, and the photosensitizer is anthracene-9-methylene sulfate quaternary ammonium salt as shown in a formula (I) or anthracene-9, 10-dimethylene sulfate diquaternary ammonium salt as shown in a formula (II). Compared with a commercially available anthracene photosensitizer, the photosensitizer used by the invention can effectively avoid carbon-oxygen bond breakage caused by p-pi conjugation, so that migration of small molecular fragments after initiation is remarkably reduced, permeable crystallization to a polyethylene protective film is effectively inhibited, and the risk of short circuit of a line is reduced; due to the introduction of the sulfate quaternary ammonium salt, excellent fat solubility is ensured, and good formula compatibility is achieved; the special water solubility is realized, and the development waste in the later development process can be effectively reduced; more flexible selectivity is provided for the formula design of the photosensitive composition; the photosensitizer can be widely applied to the photocuring fields of dry films, paints, coatings, printing ink, forming materials and the like.

The invention provides a method for simultaneously preparing nonafluoroisobutyl ether and heptafluoroisobutyrate from bis (heptafluoroisopropyl) heptanone, i.e., the bis (heptafluoroisopropyl) heptanone and fluoroformate react under the catalytic action of alkali metal fluoride to obtain the nonafluoroisobutyl ether and the heptafluoroisobutyrate. The technical scheme provided by the invention has the following advantages: 1) the one-step reaction is realized for the first time to obtain the nonafluoroisobutyl ether and the heptafluoroisobutyrate; the process route is simplified, the equipment investment and the production complexity are reduced, and the technical economy is improved. And 2) compared with the existing nonafluoroisobutyl ether preparation technology, the method does not use a high-toxicity alkylating reagent dimethyl sulfate or diethyl sulfate, does not generate a large amount of difficult-to-treat and high-toxicity solid byproduct potassium methyl sulfate or potassium ethyl sulfate, and is safer and more reliable in process. 3) compared with the existing heptafluoroisobutyrate preparation technology, the technical scheme is simple in process, safe and reliable; the reaction selectivity is good, and byproducts are few; and the product is easy to separate and high in yield.

The application belongs to the technical field of clay stabilizer preparation, and particularly relates to a clay stabilizer and a preparation method thereof. The clay stabilizer is composed of the following raw materials: 1-ethyl-3-vinylimidazolium bromide, [3-(dodecyloxy)-2-hydroxypropyl] di(2-hydroxyethyl) methylammonium methyl sulfate, 3-{(dimethyl(3-trimethoxysilyl)propyl)ammonium} propane-1-sulfonate, polyallylamine hydrochloride, glycerophosphorylcholine, lauryl alcohol polyoxyethylene polyoxypropylene ether, glacial acetic acid, and the balance is deionized water. The clay stabilizer has excellent permeability and anti-swelling rate due to the synergistic effect between the raw materials.

The invention belongs to the technical field of clay stabilizer preparation, and particularly relates to a clay stabilizer and a preparation method thereof. The invention relates to a clay stabilizer. The invention relates to an environment-friendly flame retardant which is prepared from the following raw materials: 1-ethyl-3-vinyl imidazole onium bromide, [3-(dodecyloxy)-2-hydroxypropyl] bis (2-hydroxyethyl) methyl ammonium sulfate methyl ester salt, 3-{(dimethyl (3-trimethoxysilyl) propyl) ammonium} propane-1-sulfonate, polyallylamine hydrochloride, glycerophosphorylcholine, polyoxyethylene polyoxypropylene lauryl ether and glacial acetic acid. And the balance of deionized water. According to the clay stabilizer disclosed by the invention, the raw materials have a synergistic effect, so that the clay stabilizer has excellent permeability and anti-swelling rate.

The present invention relates to a bis(fluorosulfonyl)imide lithium salt (LiFSI) having a methyl sulfate content of 100 ppm by weight or less, a composition comprising same, and a method for preparing same. The lithium bis(fluorosulfonyl) imide having a methyl sulfate content of 100 ppm by weight or less according to the present invention suppresses side reactions occurring on the surface of an electrode and improves the voltage stability of a lithium-ion secondary battery, thereby increasing the lifespan of the battery.

The invention belongs to the technical field of preparation of thickening agents, and particularly relates to a preparation method of a thickening agent for fracturing. The preparation method of the thickening agent for fracturing, disclosed by the invention, comprises the following steps: (1) pre-emulsification treatment of dicyclopentadiene oxyethyl acrylate; (2) preparing a water phase; (3) preparing an initiator solution; (4) polymerization reaction; and (5) post-treatment. According to the preparation method of the thickening agent for fracturing, disclosed by the invention, acrylamide is taken as a main monomer, dicyclopentadiene oxyethyl acrylate, 4-[(3-methacrylamidopropyl) dimethyl ammonium] butane-1-sulfonate and methacrylamidopropyl trimethyl ammonium methyl sulfate are taken as functional monomers, and a random copolymerization reaction is performed; a multi-element random copolymerization structure of'rigid temperature-resistant chain segment-zwitterionic salt-resistant chain segment-cationic adsorption chain segment 'is constructed, so that the prepared thickening agent for fracturing has excellent salt resistance, high temperature resistance and high viscosity increasing performance.

The invention provides a water-based visible light curing composition containing an anthracene methyl sulfate sodium salt photoinitiator and application of the water-based visible light curing composition, the photoinitiator introduces sulfate substituted methylene to 9 and 10 sites of a structural main body anthracene ring, and sodium ions are adopted as balance cations, so that the water-based visible light curing composition has the following technical advantages that a symmetrical dual-ion group endows ultrahigh water solubility, and the photoinitiator has a good water-based visible light curing effect; the dispersion can be realized without a cosolvent; the photo-initiation efficiency is high, and rapid curing can be realized when the addition amount is only 0.1-5%; after the anthracycline conjugated system is modified by methyl sulfate radicals, the maximum absorption wavelength is subjected to red shift to 405 + / -5 nm, and the anthracycline conjugated system is perfectly matched with an industrial LED light source; the coating has good compatibility with water-based resin, high coating hardness and good adhesive force; therefore, the environment-friendly requirement is met.