80results about How to "Meet the requirements of industrialized mass production" patented technology

The present invention discloses one kind of conductive plastic and its processing method and apparatus. The conductive plastic includes conductive fiber 0.1-45 vol%, thermoplastic plastic 55-99 vol% and machining assistant 0-3 vol%. The conductive fiber is arranged in 3D netted form homogeneously with multiple joining points, and the conductive plastic has high conductivity, high antistatic and electromagnetic shielding effect, and low surface resistance and volumetric resistivity, and may be injected, extruded and molded like common plastic.

The invention provides a delivery system for preparing novel drugs based on a liquid surface spraying method, which is a novel microparticle preparation method with great industrialization prospects. The delivery system of the new drug is prepared based on the liquid surface spray method. The solution containing the carrier material is miscible or suspended with the drug or the drug solution, and then atomized, and sprayed into the receiving liquid to form a particle preparation. The flow rate of the atomized liquid is 0.01-100ml / min, spray pressure 0.1-0.5MPa, preparation temperature 5-100°C. The invention has high yield and good method stability, and the whole preparation process of the invention is completed by instruments, which avoids the difference of human factors and greatly improves the yield. The particle size distribution is uniform and reproducible.

The invention relates to a method for removing iron and silicon impurities during the regeneration of aluminum scraps, belonging to the field of impurity removal during the regeneration and recovery of non-ferrous metals. The method comprises the steps of putting 20-30% of borax, 20-30% of manganese chloride, 10-20% of calcium chloride, 10-20% of calcium oxide, 5-10% of magnesium carbonate, 5-10% of sulfur and 10-20% of filler into a stirring vessel, and mixing, so as to obtain iron removing flux; putting 30-50% of calcium sulfide, 20-40% of activated carbon, 5-10% of sulfur, 10-20% of calcium oxide and 10-20% of filler into a stirring vessel, and mixing, so as to obtain silicon removing flux; melting the aluminum scraps in a melting furnace, adding the iron removing flux into aluminum scrap molten liquid, stirring the aluminum scrap molten liquid, adding the silicon removing flux, stirring, and then, standing, so as to obtain aluminum scrap molten liquid; carrying out gas-blowing refining on the aluminum scrap molten liquid, and standing, thereby obtaining aluminum scrap melt in which iron and silicon impurity elements are removed. The method has the advantages that the yield of aluminum can not be affected, and the content of the iron and silicon impurity elements is lowered remarkably; the environment is not destroyed; the steps are simple.

The invention discloses a solid preparation of atorvastatin calcium liposome. The preparation is prepared from the atorvastatin calcium liposome and other pharmaceutically common auxiliary materials, wherein the atorvastatin liposome is prepared from the following components in parts by weight: 1 part of atorvastatin calcium, 2-5 parts of phospholipid and 0.8-3 parts of additive. The atorvastatinsolid preparation prepared from the liposome has the advantages that the dissolution rate is increased, the stability and bioavailability are greatly improved, the product quality of the preparation is improved and the toxic and side effect is reduced.

The invention relates to a preparation method of 28-homobrassinolide, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: preparing a corresponding asymmetric epoxide from (2,22)-diene-24S-ethyl-5alpha-cholest-6-one under the action of a chiral catalyst and an oxidizing agent, and then carrying out esterification, oxidation and hydrolysisreactions to obtain a product. The catalyst provided by the invention has the advantages of high selectivity, high efficiency, and low dosage, and the method has advantages of low cost, simple process, convenient operation, environmental protection and good industrial application value.

A technique for diluting the antigen of foot-and-mouth disease virus uses a diluent prepared from sodium chloride, disodium hydrogen phosphate, potassium chloride, potassium dihydrogen phosphate, magnesium sulfate, glucose and calcium chloride through proportional mixing and concentrating by 10 times. Before it is used, its pH value must be regulated to 7.6 by 7.5% NaHCO3. Its advantages are simple and reliable method and low cost.

Belonging to the technical field of high polymer material preparation, the invention provides a preparation method of an electroconductive polyamide-polyethylene blended alloy material. The method comprises the steps of: firstly, putting 90-105 parts of nylon 66 resin, 31-38 parts of polyethylene resin, 0.9-1.9 parts of a coupling agent, 32-41 parts of a filling material and 9-14 parts of an electroconductive agent that are weighed by weight into a high-speed mixer for mixing them uniformly, then putting 0.4-0.9 part of an antioxidant, 40-51 parts of a glass fiber and 0.8-1.4 parts of a surface modifier that are weighed by weight into the high-speed mixer for further mixing so as to obtain a granulation material; and putting the granulation material into a twin-screw extruder for melt extrusion, and controlling the temperature of zone one of the screw extruder at 230DEG C, the temperatures of zone two and zone three at 240DEG C respectively, and the temperatures from zone four to zone eight all at 250DEG C, thus obtaining the electroconductive polyamide-polyethylene blended alloy material. The method of the invention has less technological links and can meet the requirements of industrialized mass production. The material prepared by the method of the invention has a good static electricity elimination function, thus being suitable for preparation of components of buildings, electrical appliances and automobiles.

The invention provides a novel intermediate compound of ezetimibe and a preparation method thereof. The preparation method comprises a step of converting 4-(4-fluoro-benzoyl)-butyric acid into 4-[2-(4-fluoro-phenyl)-[1,3]dithiolan-2-yl]-butyric acid by using an unseparated intermediate compound. The method provided by the invention is simple in route, low in price and high in efficiency; and in order to better protect functional groups, the method employs the selectively removable protective group, so the method has the advantages of few impurities, high product purity and high product yield.

The invention relates to a method for large-scale purification of plasmid DNA, and belongs to the technical field of bioengineering such as DNA vaccines, nucleic acid vaccines and gene therapy. The easy, convenient and rapid separation effect is achieved by adding diatomite into alkali lysate to aid filter and clarification, and then through purification steps such as concentrated ultrafiltration,molecular sieve chromatography, affinity chromatography, anionic exchange chromatography, replacement concentration of final products and degerming filtration of clarification lysate, plasmid DNA products meeting the medicinal standards can be produced. According to the method, the diatomite is used for the first time to aid filter and applied to the field of purification of the plasmid DNA products, and the operation method is simple, convenient and easy to enlarge; and the plasmid DNA purification method provided by the invention is high in operability and good in repeatability, the purified plasmid DNA is high in total recovery rate and meets the medicinal standards, and the requirements of mass industrial production can be met.