120results about How to "Limit the scope of protection" patented technology

The invention relates to a new method for synthesizing 3-cyclopropyl methoxy-4-(difluoromethoxy) benzoic acid. The method is characterized by taking 3-nitro-4-hydroxybenzoic acid ester as the raw material to obtain the 3-cyclopropyl methoxy-4-(difluoromethoxy) benzoic acid through alkylation, reduction, diazotization, hydrolysis, alkylation, deprotection and the like. The 3-cyclopropyl methoxy-4-(difluoromethoxy) benzoic acid is a key intermediate for synthesizing the drug roflumilast.

The invention provides a method for preparing high purity ceftizoxime or a ceftizoxime salt, a method for preparing a powder-injection of ceftizoxime or the ceftizoxime salt, and high purity ceftizoxime or ceftizoxime salt and corresponding powder-injections prepared according the methods.

The description relates to an interactive digital display. One example includes a display device configured to receive user input and recognize commands relative to data visualizations. The system also includes a graphical user interface configured to be presented on the display device that allows users to interact with the data visualizations via the user commands.

The invention relates to an SCM-12 molecular sieve and a preparation method thereof, mainly aiming at solving the technical problems of an SCM-12 molecular sieve with a novel structure which is not related in the prior art. The invention provides a novel SCM-12 molecular sieve with an open framework structure. The SCM-12 molecular sieve is prepared from the following chemical components accordingto the following mol ratio: x(XO) to y(Y2O3): z(Z2O5), wherein X is at least one of elements including manganese, magnesium, nickel, copper, zinc and the like; Y is at least one of elements includingaluminum, boron, gallium and the like; Z is a phosphorus element; x is greater than or equal to 0.01 and less than or equal to 100; y is greater than or equal to 0.01 and less than or equal to 100; zis greater than or equal to 0.01 and less than or equal to 100; an XRD (X-Ray Diffraction) pattern of the SCM-12 molecular sieve has diffraction peaks when 2theta is equal to 9.66+/-0.05, 11.31+/-0.1,15.21+/-0.1, 20.59+/-0.1, 26.65+/-0.1, 29.11+/-0.1, 34.23+/-0.1 and 38.16+/-0.1; by adopting the technical scheme, the technical problems are solved.

The invention discloses a processing method capable of preventing abalone soup cans from blackening. The method comprises the following steps: timely performing anti-blackening color protection process treatment for three times during fishing of abalone, workshop pretreatment and pre-boiling and soup-loading process, and then performing sterilization and storage. Through the three times of timely continuous anti-oxidation and anti-blackening color protection treatment with seamless oxygen contact, the original color, luster and quality of products can be effectively kept.

The present invention relates to a kind of SCM-9 molecular sieve and preparation method thereof, mainly solve the technical problem of molecular sieve SCM-9 of new structure not involved in the prior art, the present invention provides a kind of new SCM-9 molecular sieve, by adopting and comprising the following Chemical composition in molar ratio: XO ₂ :nY ₂ o ₃ , 0.002≤n≤0.25, the technical scheme in which the XRD diffraction pattern of the SCM-9 molecular sieve has diffraction peaks at 2θ of 6.56±0.05, 13.18±0.1, 19.83±0.1, 25.48±0.1, and 30.57±0.1 is better The above-mentioned technical problems are solved, and the molecular sieve can be used in the industrial production of methanol to olefins.

The invention discloses a compound filling for sewage treatment which comprises the components (by weight portion) of medical stone 3-12, lump lime 2-18, industrial adhesives 1-3, or pore-forming agent 1-3. The invention also discloses the process for preparing the compounded mixture, which has the advantages of small volume weight, large high specific surface area, high degree of porosity, and impact load proofing.

A sprinkler assembly includes a body, a support, which extends from the body, and a closure device that releasably closes the discharge opening of the body. The sprinkler assembly further includes a trigger that releasably holds the closure device at the discharge opening. The support is adapted to allow the fluid flowing from the discharge opening, when the closure device is released, to pass through the support substantially unimpeded by the support and, further, is adapted to reshape the flow of fluid as it flows through the support.

Solvent systems for the formulation of alkyl thiophosphoric triamide urease inhibitors, that provide stable dispersion of alkyl thiophosphoric triamides for even distribution (in low or high concentrations) onto fertilizers containing urea in liquid or solid form.

The invention relates to a synthesis method of biapenem ester, which comprises the steps of: 1) under the condition of air isolation, adding organic solvent, compound (II), compound (IV), R13P and alkali into a reactor, controlling the reaction temperature, and reacting for more than 15min; 2) carrying out HPLC monitoring, and using acid to adjust a system to acidity after reaction; and 3) crystallizing, cooling the reaction liquid, adding crystallization solvent for stirring and crystallization, filtering and obtaining the target compound (compound I). The invention has simple and convenient operation, can directly crystallize without needing purification in the reaction, and avoids using biapenem branched chain which is compound (III) and is easy in moisture absorption and difficult to prepare and store.

The invention belongs to the technical field of pharmaceutical intermediates, and in particular relates to a new preparation method of a key intermediate, 7-methoxy-1-naphthylethylamine of a pharmaceutical ingredient, agomelatine. The aim of the invention is to reduce the cost, optimize the process and bring convenience to the industrial production. The preparation method comprises the following steps: taking 7-methoxy-1-naphthylacetate as a raw material; reducing by sodium borohydride to obtain 7-methoxy-1-naphthaleneethanol; carrying out a methyl sulfonylation reaction to obtain 7-methoxy-1-naphthylethylmethanesulfonate; reacting 7-methoxy-1-naphthylethylmethanesulfonate with a phthalimide potassium salt to obtain 7-methoxy-1-(N-phthalimidoethyl)naphthyl; and finally hydrolyzing 7-methoxy-1-(N-phthalimidoethyl)naphthyl to obtain the product, 7-methoxy-1-naphthylethylamine. The preparation method has the advantages of being simple and convenient in operation, reasonable in reaction process, low in production cost, good in product quality, high in purity (above 98%), having no environment pollution and being suitable for industrial production.

The invention discloses a citric acid tamoxifen capsule and consists of 5 to 25 percent of citric acid tamoxifen, 35 to 55 percent of starch, 35 to 50 percent of microcrystalline cellulose, 2 to 5 percent of PVPP and 0.2 to 0.5 percent of magnesium stearate according to the weight percentage.

A drill is provided with a chuck that is capable of being tightened or loosened by operation of the drill. The chuck includes a shift mechanism that interacts with the multi-speed transmission of the drill to ensure that the transmission is shifted into a desired gear ratio whenever the chuck is shifted from a drill mode to a chuck mode.

The invention discloses a three-stage phase change heat exchanger, and is used for heat dissipation of a high-power component with ultrahigh heat flux. The heat exchanger comprises a heat exchanger main body, a cooling liquid nozzle and a supporting structure of the cooling liquid nozzle, wherein the heat exchanger main body comprises a metal harmonica- shaped tube, a metal or alloy solid-liquid phase change material cavity, an expansion heat dissipation surface outside the cavity and two end heads; and the cooling liquid nozzle and the supporting structure thereof comprise a supporting structure and a nozzle or a nozzle array. A refrigerant fluid working medium flows into the metal harmonica-shaped tube through the end head and absorbs heat led in from the lower wall surface of the harmonica-shaped tube, and a vaporized refrigerant flows out from the other end head of the metal harmonica-shaped tube. When the heat production is drastically increased, the metal or alloy solid material in the cavity is subjected to solid-liquid phase change, meanwhile, the nozzle at the top sprays atomized cooling (insulating) liquid, and the atomized cooling (insulating) liquid is in contact with the upper surface of a heat dissipation shell and absorbs heat to be vaporized; and extra instantaneous large heat flow heat is absorbed through two phase change latent heat of metal or alloy solid-liquid phase change and cooling liquid spray liquid-gas phase change, and it is guaranteed that the temperature of a high-power component is maintained within a certain range to work normally.

The invention provides a ceramic with an invisible anti-counterfeiting function. A method comprises the steps of: 1) mixing high-temperature porcelain clay and anti-counterfeit powder in a ratio of 100 to (0.3 to 1.5) to obtain anti-counterfeiting porcelain clay; 2) mixing mixture of the anti-counterfeiting porcelain clay obtained in step 1), adding water with a mass fraction of 8% to 12%, water glass with a mass fraction of 0.3% to 0.4%, and American water with a mass fraction 0.1% to 0.3%, mixing for 1 to 3 hours, using a 120 to 180 mesh filter screen to filter, and producing slurry with a flow rate of 25m/s to 30m/s and a specific gravity of 160g/cm<3> to 180g/cm<3>; 3) pouring the slurry obtained in step 2) into a plaster mold, waiting for the slurry to solidify, and taking out an unfired brick; 4) after the step 3) is finished, drying and repairing the unfired brick at room temperature; 5) putting the unfired brick cleaned in the step 4) in a kiln for biscuit firing to obtain a biscuit; 6) glazing the biscuit prepared in step 5), and conducting high-temperature reduction and firing on a glazed body to obtain a finished product. The invention provides a permanent anti-counterfeiting technology ceramic, the ceramic is heat-resistant, and can satisfy industrial needs.

Implementations described herein disclose a malware sequence detection system for detecting presence of malware in a plurality of events. An implementation of the malware sequence detection includes receiving a sequence of a plurality of events, and detecting presence of a sequence of malware commands within the sequence of a plurality of events by dividing the sequence of plurality of events intoa plurality of subsequences, performing sequential subsequence learning on one or more of the plurality of subsequences, and generating a probability of one or more of the plurality of subsequences being a malware based on the output of the sequential subsequence.