13 results about "Acetone oxime" patented technology

This invention discloses a class of aryl acetone oxime ether derivatives and their applications, belonging to the field of medicinal chemistry. The derivatives are compounds represented by general formula (I) or pharmaceutically acceptable salts thereof, exhibiting excellent regulatory activity against the S1P1 receptor, as well as excellent pharmacokinetic properties and anti-inflammatory efficacy. This invention also discloses pharmaceutical compositions comprising the derivatives and their application in the preparation of drugs for the prevention and / or treatment of autoimmune diseases, which can be used for the treatment of diseases such as multiple sclerosis and ulcerative colitis. General formula (I).

The invention discloses a preparation method of a novel boiler deoxidant, and belongs to the technical field of chemical synthesis. The invention provides a preparation method of a novel boiler deoxidant, which comprises the following steps of: dehydrating isochromanone serving as a raw material and hydroxylamine sulfate in a solvent (water, ethanol or methanol) under an acidic condition to generate isochromanone oxime, and mixing the isochromanone oxime with other oximes, a dispersing agent and the like in parts by weight to prepare the required boiler deoxidant. The deoxidant is prepared from 3 to 5 parts of isochroman ketoxime, 12 to 16 parts of acetoxime, 12 to 14 parts of acetaldoxime, 8 to 12 parts of carbohydrazide, 4 to 7 parts of a dispersant, 5 to 10 parts of a pH regulator, 5 to 10 parts of a catalyst and 40 to 50 parts of water, wherein the other raw materials are prepared from 3 to 5 parts of isochroman ketoxime, 12 to 16 parts of acetoxime, 12 to 14 parts of acetaldoxime, 8 to 12 parts of carbohydrazide, 4 to 7 parts of a dispersant, 5 to 10 parts of a pH regulator, 5 to 10 parts of a catalyst and 40 to 50 parts of water. According to the preparation method, boiler pipelines, equipment and the like can be passivated while low toxicity, high efficiency and high speed can be guaranteed, equipment corrosion damage caused by metal oxide deposition of a boiler is prevented, and the product is non-toxic, harmless and mild to the environment.

Process for the preparation of propan-2-imine-substituted phenyls / oxime ethers, in particular to the preparation of 1-(2,4,6-trichlorophenyl)-propan-2-one oxime and N-methoxy-1-(2,4,6-trichlorophenyl)- propan-2-imine.

The invention relates to the technical field of agricultural non-point source pollution treatment, and particularly discloses an ammonia direct oxidation denitrification method suitable for a slope cropland ecological ditch. According to the method, one or more AMAO reaction units are arranged in an ecological ditch system along a longitudinal slope of a ditch in a stepped manner, and ammonia nitrogen is directly converted into nitrogen in the ecological ditch system by utilizing AMAO functional flora based on a microbial acetone-mediated ammoxidation (AMAO, acetone + ammonia-acetoxime-acetone + nitrogen) way in the AMAO reaction units, so that the ammonia nitrogen can be directly converted into nitrogen in the ecological ditch system. The system utilizes widely distributed AMAO functional microorganisms to directly convert ammonia nitrogen into nitrogen in a single reaction unit, so that the limitation of a traditional nitrification-denitrification path is broken through. According to the invention, through the modularized stepped drop structure, the composite functional filler layer and accurate microenvironment regulation and control, the efficient and stable removal of ammonia nitrogen in the slope cropland farmland drainage under the conditions of low energy consumption and low cost is realized, and a brand new technical normal form is provided for solving the problem of nitrogen pollution of the slope cropland.

The invention discloses a full-automatic acetoxime detection method and device, and belongs to the technical field of acetoxime detection.The device comprises a digestion colorimetric pool, a peristaltic pump, a first electromagnetic valve set, a quantifying device, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a PLC and a touch screen; all the components are connected through high polymer polytetrafluoroethylene plastic hoses; according to the invention, sequential injection is used for spectrophotometric detection of acetoxime concentration, detection sequence continuity and automatic control are realized, the acetoxime content in boiler circulating water can be fully automatically and rapidly detected, a residue-free quantitative device is adopted, the volume is small, the sensitivity is high, whether colorless, colored and turbid liquids exist or not can be rapidly sensed, and the detection accuracy is high. And the water sample is quantified accurately, has no residue and has high reproducibility.

The invention discloses an isocyanate low-temperature curing cross-linking agent as well as a preparation method and application thereof, and the low-temperature curing cross-linking agent is prepared from the following raw materials in parts by mass: 80-90 parts of diisocyanate, 55-65 parts of a dispersing agent, 8-20 parts of a drier, 30-50 parts of a sealing agent A, 30-60 parts of a sealing agent B and 40-60 parts of a sealing agent C, the sealing agent A is selected from at least one of methyl ethyl ketoxime and acetoxime; the sealing agent B is selected from polyether polyol; and the sealing agent C is selected from at least one of 4-hydroxyacetophenone and isopropyl salicylate. The low-temperature curing cross-linking agent is low in raw material cost, does not need to use high-cost raw materials such as a tin drier, is high in stability, can be cured at 130 DEG C, and has excellent corrosion resistance; and the prepared cathode electrophoretic paint has no special requirements on the used color paste, can use the general color paste, and can still keep excellent stability.

The invention discloses a cleaning agent and a cleaning method for a water-cooled electromagnet of a particle accelerator, and belongs to the technical field of maintenance and treatment of water-cooled electromagnets. The cleaning agent comprises a special pickling agent and a special passivating agent; the special pickling agent is prepared from components in percentage by mass as follows: 0.1%-0.5% of a nitric acid pickling corrosion inhibitor, 3%-4% of sulfamic acid, 0.1%-0.8% of sodium fluoride, 0.001%-0.003% of a surfactant, 0.5%-2.5% of citric acid and the balance of water, the special passivating agent is prepared from the following components in percentage by mass: 0.02 to 0.1 percent of acetoxime, 0.03 to 0.1 percent of benzotriazole, 0.001 to 0.003 percent of a de-foaming agent and the balance of water. The particle accelerator water-cooled electromagnet cleaned by the cleaning agent provided by the invention and a specific cleaning method meets the use requirements, reaches an ideal level, and can ensure normal operation of the accelerator.

The invention relates to the technical field of titanium and titanium alloy, in particular to a titanium alloy bright pickling solution. According to the pickling solution, 2-phosphonobutane-1, 2, 4-tricarboxylic acid containing phosphonic acid groups is introduced to be compounded with zirconyl nitrate, a composite film is constructed on the surface of the titanium alloy, the defects that a traditional carboxylic acid corrosion inhibitor is poor in temperature resistance and weak in binding force are overcome, and the corrosion rate is effectively inhibited from being out of control in the wide temperature range of 30-50 DEG C; meanwhile, hydrophilic acetoxime and hydrophobic alpha-benzoin oxime are combined to construct a dioxime synergistic system, small molecules are used for rapidly sealing crystal boundary active points, and macromolecules are used for constructing an external hydrophobic barrier, so that pitting corrosion and surface defects are thoroughly eliminated; according to the titanium alloy corrosion inhibitor, homogeneous slow release of corrosion inhibition components in strong acid is achieved, the corrosion amount is precisely locked in a micron-scale range in cooperation with a specific mixing technology, and the surface brightness, the size precision and the machining yield of precise titanium alloy parts such as aviation fasteners and medical implants are remarkably improved.

The application discloses a kind of waterborne anti-flash rust coating and its preparation method and application, belong to coating technical field;The waterborne anti-flash rust coating provided by the application includes component A and component B;Component A includes the following components by mass fraction: 0-15 parts of water, 0.1-0.5 parts of pH regulator, 0.1-0.5 parts of dispersant, 0.01-0.1 parts of defoaming agent, 1-10 parts of pigment, 30-60 parts of filler, 20-35 parts of resin, 0.6-4 parts of film-forming aid, 0-0.2 parts of functional aid, 0.01-0.2 parts of thickening agent;Component B includes the following components by mass fraction: 0.3-2 parts of acetone oxime;The pH regulator includes sodium hydroxide;The average molecular weight of dispersant is 2000-4000;The solid content of component A is 69-71%.The early water resistance and anti-flash rust property of the waterborne anti-flash rust coating provided by the application are excellent, and the surface drying time is shorter.

The invention belongs to the technical field of coatings, and discloses a multi-component anti-skinning composition based on oxime and an application of the multi-component anti-skinning composition. The compound is composed of oxime compounds, and specifically comprises acetoxime, propionaldehyde oxime, 2-butanone oxime, butyraldehyde oxime, 2-pentanone oxime, 3-pentanone oxime, methyl isopropyl ketoxime, methyl isobutyl ketoxime, pinacol oxime, cyclopentanone oxime, 2-hexanone oxime, 3-hexanone oxime, cyclohexanone oxime, 2, 2, 4, 6-tetramethyl-3-pentanone oxime, 2, 2, 4, 6-tetramethyl-3-pentanone oxime, 2, 2, 4, 6-tetramethyl-3-pentanone oxime, 2, 2, 4, 6-tetramethyl-3- the compound is selected from three or more of 3, 4, 4-tetramethyl-3-pentanone oxime, 4-methyl-2-pentanone oxime, 2-heptanone oxime, 3-heptanone oxime, 4-heptanone oxime, cycloheptanone oxime, 2-nonanone oxime, 5-methyl-2-hexanone oxime, 5-methyl-3-heptanone oxime, 6-methyl-2-heptanone oxime, benzaldoxime and acetophenone oxime. The anti-skinning coating has more excellent anti-skinning performance, and the quality of the oxidation drying type coating can still be stable after long-time storage.

The invention relates to the field of water treatment, in particular to a boiler water treatment agent and a preparation method thereof. The boiler water treatment agent is prepared from the following raw materials in parts by weight: 30 to 60 parts of modified vermiculite, 5 to 15 parts of glucuronate, 5 to 15 parts of sponge iron particles, 3 to 10 parts of itaconic acid, 15 to 30 parts of trisodium phosphate, 8 to 15 parts of acetoxime, 0.5 to 2 parts of benzotriazole, 5 to 12 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and 80 to 120 parts of water. Through full-chain cooperation of all the components in corrosion prevention, scale inhibition, water quality stabilization and preparation processes, a boiler metal base material can be effectively protected, scale formation is blocked, system water quality stability is maintained, the scale inhibitor is suitable for long-term stable operation of medium and high pressure boilers, the service life of the boilers is prolonged, and heat efficiency is improved.

The present application relates to a kind of high-efficiency synthesis method of acetone oxime and 2-pentanone oxime, belong to ketoxime synthesis technical field.The present application is added to reactor ketone or 2-pentanone, ammonia, catalyst, stir and heat, slowly drop hydrogen peroxide, reaction is carried out under closed system;After reaction, filtration, distillation under reduced pressure, obtain acetone oxime or 2-pentanone oxime;The catalyst of the present application is boron modified TS-1 molecular sieve, by TS-1 molecular sieve, vinyl tributyl ketoxime silane, methacrylic acid ester strontium, 1,2,3,4,5,6,7,8,9,10,11-undecahydro-12-mercaptododecanesulfonic acid borane, toluene, triethylamine, response is obtained;Acetone oxime and 2-pentanone oxime prepared by the present application have higher purity and yield.

The utility model provides an extractive distillation system for ketoxime, which comprises a reaction kettle, an extractant intermediate tank, an extraction tank, a partition rectifying tower, a condenser and an acetoxime storage tank, a rectifying tower feed pipe is arranged between the extraction tank and the partition rectifying tower, and a feed pipe heat preservation jacket is sleeved on the outer layer of the rectifying tower feed pipe. One end of the feed pipe heat preservation jacket is connected with the condensation water outlet pipe, the other end of the feed pipe heat preservation jacket is connected with the return pipe, and the end, away from the partition plate rectifying tower, of the condenser is connected to the top of the extracting agent intermediate tank. According to the ketoxime extractive distillation system provided by the utility model, heat in the condenser can be recycled to the front end of the partition plate distillation tower while water in ketoxime is separated, so that the energy consumption is reduced, and the economic benefit of a product is improved.