8 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).

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.