302results about How to "Fine powder" patented technology

PCT No. PCT/JP97/01387 Sec. 371 Date Dec. 11, 1997 Sec. 102(e) Date Dec. 11, 1997 PCT Filed Apr. 22, 1997 PCT Pub. No. WO97/40075 PCT Pub. Date Oct. 30, 1997A catalyst component for polyolefin production catalysts comprising a metallocene compound represented by general formula (1) (symbols have the meanings as described in the specification), polyolefin production catalyst containing the component, and method for producing polyolefin with the catalyst are provided. Use of a catalyst containing the novel metallocene compound as a catalyst component of the invention in polymerization of alpha -olefin, particularly propylene, enables one to prepare high rigid, high melting point isotactic polypropylene useful as an industrial material for automobiles and the like, more specifically isotactic polypropylene having highly controlled stereoregulartity and regioregularity, particularly the one having a high regioregularity that has been difficult to achieve with conventional metallocene catalysts.

A lithium transition metal based compound powder for a lithium secondary battery positive electrode material, characterized by including a lithium transition metal based compound, which has a function of enabling insertion and elimination of lithium ions, as a primary component and being produced by conducting firing after at least one type of compound (hereafter referred to as “Additive 1”) containing at least one type of element (hereafter referred to as “Additive element 1”) selected from B and Bi and at least one type of compound (hereafter referred to as “Additive 2”) containing at least one type of element (hereafter referred to as “Additive element 2”) selected from Mo and W are added in combination to a raw material of the primary component at a ratio of a total of Additive 1 and Additive 2 to a total amount of moles of transition metal elements in the raw material of the primary component of 0.01 percent by mole or more, and less than 2 percent by mole.

The invention discloses a paint pulverizer, and relates to the technical field of paint production equipment manufacture. The paint pulverizer comprises a pulverizing cylinder, whose bottom is provided with a first filtering screen, the pulverizing cylinder is connected to a feed hopper, a rotation shaft and a plurality of pulverizing blades are arranged in the pulverizing cylinder, the plurality of pulverizing blades are fixed on the rotation shaft, one end of the rotation shaft is connected to a first motor through mechanical transmission; a powder pressing box is arranged under the pulverizing cylinder, the powder pressing box is provided with a discharge opening provided with a second filtering screen, two press rollers, which rotate in the opposite directions, are arranged in the powder pressing box and connected through gear transmission, and one of the press rollers is connected to a second motor. The paint fed into the pulverizing cylinder is pulverized by the pulverizing blades, then screened by the first filtering screen, transported to the powder press box, rolled by two press rollers that rotate in the reverse directions, and finally screened by the second filtering screen, the paint is more radically pulverized, the powder is finer, and the paint luster is brighter, compared to the prior art.

The present invention relates to novel human insulin derivatives which are soluble at physiological pH values and have a prolonged profile of action. The invention also relates to methods of providing such derivatives, to pharmaceutical compositions containing them, to methods of treating diabetes and hyperglycaemia using the insulin derivatives of the invention and to the use of such insulin derivatives in the treatment of diabetes and hyperglycaemia.

The invention relates to heat treatment of polymorphic semicrystalline or crystallizable polymers to increase the content of the highest melting crystalline form. Such heat treatment results in a polymer powder that has a consistent, uniform melting range, improved flow and improved durability of the powder particle size for applications that require powder flow at elevated temperatures. In addition to improved powder properties, the articles produced from the powders also exhibit better physical properties in both appearance and in mechanical properties. Thus the invention also includes polymer powders and articles produced by the described processes.

The invention discloses an oxide powder and a preparation method thereof as well as a catalyst and a carrier thereof. The powder comprises powder of hollow microballoon structure which is formed by converged nanocrystalline oxide, and the wall of the hollow microballoon is provided with a porous structure. The preparation method is the method for preparing the powder. Aqueous solution system slurry suitable for spray drying is prepared by a precipitation method, the target powder is obtained through roasting after spray drying, and the catalyst and the carrier thereof comprise the oxide powder. Compared with the prior art, the powder has the porous hollow microballoon structure, thus having high specific surface area and being beneficial to dispersing substances when being used as the catalyst or the carrier thereof; and the processes are simple, easy to operate and suitable for industrialized production.

There are provided;

• [0001]
  • (i) a solid catalyst component obtained by contacting a trivalent titanium atom-containing solid catalyst component precursor (C) with a halogeno compound (A) of the 13 or 14 group of elements in the periodic table of the elements and an electron donor (B), or a solid catalyst component obtained by contacting an intermediate product with a titanium-halogen bond-carrying compound (D), the intermediate product being obtained by contacting the solid catalyst component precursor (C) with a halogeno compound (A′) of the 14 group of elements in the periodic table of the elements and the electron donor (B), or a solid catalyst component comprising a magnesium atom, a titanium atom, a halogen atom and an electron donor and having a relative surface area of not more than 30 m²/g, the catalyst component being superior in a particle form, and
  [0002]
  • (ii) a catalyst comprising the solid catalyst component and an organoaluminum compound, the catalyst being high in polymerization activity.

Lithium cobalt oxide, which can provide a nonaqueous electrolyte secondary battery having an excellent initial capacity and an excellent capacity retention, and a method for manufacturing the same are provided. The lithium cobalt oxide has a tap density of at least 1.7 g/cm³ and a pressed density of 3.5 to 4.0 g/cm³. A method for manufacturing the lithium cobalt oxide includes the step of selecting a lithium cobalt oxide (A) and a lithium cobalt oxide (B) so that a difference in the tap density between the lithium cobalt oxide (A) and the lithium cobalt oxide (B) is at least 0.2 g/cm³; and mixing the lithium cobalt oxide (A) and the lithium cobalt oxide (B).

The invention concerns a powder metallurgical composition comprising a major amount of an iron-based metal powder and a minor amount of carbon black. The amount of carbon black is between 0.001 and 0.2% by weight, preferably between 0.01 to 0.1% by weight.

The invention relates to an AlSi10Mg powder material for 3D printing and a preparation method and application thereof. The main alloying elements of the powder material comprises, by mass, 9.0-11.5% of Si; 0.2-0.50% of Mg and the balance aluminum. According to the preparation method of the AlSi10Mg powder material, the powder material is prepared by adopting the method of inert gas atomization; high speed airflow is used to crush a high temperature melting fluid of the powder material into small liquid droplets to cool down the small liquid droplets rapidly and to make the small liquid droplets freeze into mental powder. The mental powder obtained is sieved and, size grading is conducted on the mental powder. The AlSi10Mg powder material is obtained. The AlSi10Mg powder material meets thequality requirements of industrial grade mental powder materials for 3D printing; and the AlSi10Mg powder material has the advantages of being high in purity, low in impurity content, even in alloyingcomponent, low in oxygen content, high in degree of sphericility, few in satellite ball, even in powder particle size distribution, controllable in quality and excellent in powder property.

A method of producing a water-absorbent resin of the present invention reduces amounts of a residual cross-linking agent and a residual surfactant, achieves high productivity, and improves physical properties of the resultant water-absorbent, such as absorption capacity, extractable polymer content, powder friction, and gel crushability. The method includes the steps of: polymerizing an aqueous monomer solution containing as a major component an acrylic acid monomer in the presence of a cross-linking agent; and drying the resultant polymer by heating, in which the cross-linking agent is a multifunctional (meth)acrylate cross-linking agent having polyethylene glycol structural units including a total of 6 to 200 ethylene oxide repeating units, and the aqueous monomer solution includes a mono(meth)acrylate compound having polyethylene glycol structural units in an amount of 0.1 to 30% by weight relative to an amount of the multifunctional (meth)acrylate cross-linking agent.

The invention discloses a toughness-enhanced hard alloy with a Co binding phase enhanced by Ni3Al. The hard phase of the hard alloy is WC, and the binding phase is Co and Ni3Al of which the volume percent is 10-40%. The preparation method of the hard alloy comprises the following sequential steps of: uniformly mixing 2.07-16.05wt% of Ni powder and Al powder with WC powder according to a composition ratio of Ni25Al; placing the uniformly mixed powder in a graphite container at the thickness not more than 50 mm, heating to 1100-1200 DEG C in a non-oxidative atmosphere at a speed not more than 5DEG C/min, maintaining the temperature for more than 1 hour, and naturally cooling to obtain a mixture of WC and Ni3Al; grinding, pulverizing and screening to obtain mixed powder with a particle sizebelow 120 mu m; carrying out deoxidation pretreatment in 400+/-50 DEG C hydrogen; carrying out pre-wet-grinding and mixing on 83.26-97.62wt% of mixed powder obtained after deoxidation pretreatment for 6-12 hours, then adding the balance of Co powder, and carrying out wet grinding for 18-36 hours; carrying out spray drying and pressure shaping on the wet-ground mixed material; and carrying out low-pressure liquid-phase sintering on the pressed blank at 1350-1550 DEG C to obtain the WC-Co hard alloy with the binding phase enhanced by Ni3Al. The hard alloy has the advantages that: a gamma' phaseis dispersed and distributed in the binding phase, the binding phase is uniformly distributed, and the alloy has high compactness, high strength, good wear resistance and excellent high-temperature oxidation resistance and corrosion resistance.

The invention discloses a method for preparing an absorbing material based on modified konjac glucomannan. The method is characterized by comprising the following steps of: soaking konjac glucomannan in mixed solution of an organic small molecular swelling solvent and water, swelling for 2 to 24 hours, performing vacuum filtration, and washing a solid by using an organic small molecular solvent to remove residual moisture; and adding the swollen konjac glucomannan into a heterocyclic or aromatic derivative which is dissolved by the organic small molecular solvent and has lone electron pairs or/and free electrons, stirring and reacting for 1 to 72 hours in the presence of a catalyst at the temperature of between 50 and 120 DEG C, precipitating a material obtained after the reaction by using a precipitation solvent, filtering, and washing and drying a solid to obtain modified konjac glucomannan powder. In the method, the modified konjac glucomannan has the characteristic of absorbing heavy metal ions; and the absorbing material can be widely used for treating heavy metal ions, radioactive nuclide wastewater and the like produced by mining industry, chemical industry, nuclear industry and the like.

The invention relates to low-calorie solid milk tea containing prebiotics and a preparation method of the solid milk tea, and belongs to the technical field of solid drinks and nutritional foods. The low-calorie solid milk comprises the following raw materials: skimmed milk powder, maltodextrin, optimized tea powder, water-soluble dietary fibers, prebiotics, wheat oligopeptides, erythritol and stevioside. The milk tea product produced by the technology is rich in nutrients such as prebiotic factors, dietary fibers, small molecule peptides and trace elements and very low in fat and heat, has the effects of relaxing bowels, resisting fatigue, improving immunity, resisting oxidation, regulating microecological balance and health of a human body and the like, is simple to prepare, low in cost and suitable for most of people, and has a wide market prospect.

The invention relates to a nano mesoporous microspherical Bi5O7I photocatalyst and a hydrothermal-thermal decomposition preparation method thereof. The Bi5O7I photocatalyst is of a nano mesoporous microspherical shape; the average particle size of microspheres is 1 to 5 microns, and the average aperture of mesoporous on the surface of the microspheres is 7 to 9 nm. The method comprises the following steps: respectively dissolving bismuth salt and iodine salt into quantitative ethylene glycol, performing ultrasonic oscillation treatment, slowly adding iodine salt solution into bismuth salt solution after complete dissolving, performing magnetic stirring to obtain a precursor BiOI, performing hydrothermal reaction on the precursor to prepare BiOI powder, heating the powder body in a tubular furnace under high temperature for decomposition, and preserving the temperature for 2 h to prepare Bi5O7I powder. The Bi5O7I powder prepared by the hydrothermal-thermal decomposition method has the characteristics of uniform shape, high stability and good photocatalysis performance, integrates the advantages of the hydrothermal method and the thermal decomposition method, and is short in reaction time, simple in technological process, lower in raw material cost and suitable for industrial popularization and application.

The invention discloses a preparation method of purple sweet potato whole wheat flour, and the preparation method comprises the following steps of: screening, cleaning, peeling, protecting color, cutting into slices, fixing color, blanching by steam, carrying out microwave drying, carrying out superfine grinding, packaging, dividing bags and the like. The purple sweet potato whole wheat flour prepared by the method is good in color and luster, less in nutritional ingredient loss, long in storage life, fine in particles, and good in mouth feel. The invention further discloses a noodle prepared by utilizing the purple sweet potato whole wheat flour, wherein the noodle is high in nutritional ingredients, good in mouth feel and convenient to eat.

The invention relates to a talcum powder comprising extracts of natural plant, wherein the raw materials include plant starch, vegetable fat and other natural plant compositions in replacement of minerals such as talcum powder, porcelain clay, calcium carbonate and magnesium carbonate, as a result, stimulation to human body will be avoided.

The present invention discloses a Chinese yam full flour and a preparation method thereof, belonging to the technical field of food processing. The Chinese yam full flour is prepared by the following steps: (1) cleaned Chinese yams are placed into a boiling water bath for 10-40 min, the boiled Chinese yams are taken out and cooled, the cooled Chinese yams are drained and the drained Chinese yams are sliced for standby application; (2) the cut Chinese yam slices are placed in a color protection solution for 0.5-2 h and the soaked Chinese yams are taken out to be beat for standby application; (3) alpha-amylase is added into the beat Chinese yam pulp, the Chinese yam pulp is subjected to enzymolysis at a temperature of 45-85 DEG C under a pH of 5.0-7.5 for 30-120 min, and the enzymolyzed Chinese yam pulp is subjected to enzyme inactivation and filtration to obtain an enzymatic hydrolysate and residue for standby application; (4) the enzymatic hydrolysate is concentrated to a soluble solid content of 10-30%, an excipient is added, and the mixture is spray-dried to obtain a Chinese yam powder A; and (5) the residue is subjected to microwave vacuum freeze-drying to obtain a Chinese yam powder B, the Chinese yam powder B is mixed evenly with the Chinese yam powder A, and thereby the Chinese yam full flour is obtained. The Chinese yam full flour is nutrient-rich, has a bright color with a slight brown color, is mellow in sweet and fragrant taste, is uniform in texture, is fine in powder, and is good in reconstituability.

The invention discloses a blueberry chrysanthemum capsule consisting of the following components (mass percent): 15-30% blueberry powder; 25-35% chrysanthemum powder; 2-5% vitamin C; 35-50% starch. Powders of the components are mixed and loaded into empty capsule bodies of hard capsules, and then capsule caps are covered, thus the blueberry chrysanthemum capsules are obtained. Raw materials used in the invention are natural blueberry and chrysanthemum. In combination with the two natural substances containing anthocyanin and xanthin as well as vitamin C, natural pigments needed for eyes can be simultaneously supplemented with mutual synergistic effect so that teenager short-sightedness can be prevented and eye fatigue can be eased.

The invention provides a silky soft skin feeling type essence liquid foundation. The silky soft skin feeling type essence liquid foundation comprises the following components: decamethylcyclopentasiloxane, polydimethylsiloxane, a vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane cross-linked polymer, ultrafine silicon treated titanium dioxide, nano silicon treated zinc oxide dispersed slurry, octyl 4-methoxycinnamate, 2,2,4,4,6-pentamethylheptane, ethanol, trimethylphenylsilane, disteardimonium hectorite, acrylic acid (ester)/polydimethylsiloxane copolymer/2,2,4,4,6-pentamethylheptane, PEG-10 polymethylsiloxane, phenoxyethanol/ethylhexyl glycerin, octylene glycol/ethylhexyl glycerin, silicon treated iron oxide yellow and silicon treated iron oxide red. The silky soft skin feeling type essence liquid foundation is good in water resistance, good in ductility, and fine and smooth in skin feeling.

The invention discloses stone-milled black soybean health-maintaining dried noodles, which are prepared from the following raw materials in part by weight: 80 to 90 parts of stone-milled triticale flour, 10 to 15 parts of stone-milled black soybean flour, 5 to 10 parts of dark brown jam, 5 to 10 parts of grifola frondosa, 5 to 8 parts of coix seed powder, 4 to 6 parts of robiniae pollen, 5 to 8 parts of Chinese wolfberry powder, 5 to 8 parts of lily powder, 5 to 8 parts of cactus powder, 3 to 6 parts of wild persimmon powder, 3 to 6 parts of gordon euryale powder, 1 to 2 parts of refined salt, and 0.2 to 0.4 part of dietary alkali. The produced dried noodles are slightly ash black, have thick aroma of black soybean and unique flavor, are rich in proteins and other nutrition required by human beings, have the health-care effects of clearing free radicals, delaying senescence, improving nutritional anemia, enhancing immunity, calming, improving sleep and the like, and integrate nutrition and food therapy.

The invention discloses a preparation method for high-activity ultrafine granulated slag micro powder. According to the invention, with desulfurized gypsum and CaO as activators, chemical/thermal composite excitation treatment is performed on coal gangue, so the material is given high volcanic ash activity; with blast-furnace slag as a main material, primary mixing and grinding are performed through a vertical mill; quartz sand powder and the prepared active material are added, so the trend of slag aggregation can be weakened or even eliminated, and the milling efficiency of the slag is improved; and secondary ball milling is performed through a horizontal ball mill, and under the action of surface activity of a milling auxiliary agent, the surface charges of the slag are affected, and theeffect of dispersing fine particles is achieved, so the specific surface area of the whole powder is improved. The high-activity slag micro powder obtained by using the preparation method provided bythe invention is applied to production of concrete and cement products, so the usage amount of cement can be reduced; the cost of production is reduced; and the durability of concrete is improved.

Solid fine particles which contain a magnesium atom, an aluminum atom and a C_1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 μm, and an olefin polymerization catalyst containing the solid fine particles and a transition metal compound in the groups 3 to 11 in the periodic table, exhibit a very high olefin polymerization activity without combination with an expensive organoaluminum oxy compound or organoboron compound and maintains a high activity in polymerization for a long time, and an olefin polymer excellent in powdery properties can be produced by using the olefin polymerization catalyst. The transition metal compound in the groups 3 to 11 in the periodic table includes a transition metal compound having a ligand containing two or more atoms selected from a boron atom, a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom.

The invention discloses health-care stone-milled triticale fine dried noodles, comprising following materials in part by weight: 90-100 parts of stone-milled triticale flour, 30-40 parts of stone-milled buckwheat flour, 10-20 parts of black fungus powder, 10-15 parts of mulberry powder, 5-10 parts of black plum juice, 8-12 parts of raspberry juice, 5-10 parts of Hawk tea, 5-10 parts of the fruit of Chinese wolfberry, 5-10 parts of sweet potato stem, 5-8 parts of purslane, 5-8 parts of cushaw flower, 4-6 parts of polygonum multiflorum, 4-6 parts of sweet potato leaf, 2-5 parts of pseudo-ginseng, 2-5 parts of poria cocos, 1-2 parts of refined salt and 0.2-0.3 part of edible alkali. The fine dried noodles produced by the invention are lavender, have rich wheat fragrance, special taste and good cooking resistance, do not get burnt after being cooked, are non-stick and smooth, are rich in needed various trace elements and other nutrients, have health-care functions of nourishing yin, moisturizing lung, slowing down ageing, reinforcing qi, nourishing blood, increasing immunity, improving alimentary anemia, building brain and nurturing the soul, and are health-care noodles integrated with nutrition and dietary therapy.