642results about How to "Reduce content" patented technology

The invention discloses a waterproof/sealing paint with an aqueous resin as the main body. The aqueous resin is a formula resin which is prepared according to a patent of the applicant of the invention, the aqueous resin and an aqueous hardener are dispersed in an emulsion, and the obtained material which is coated on surfaces of buildings, timbers, rattan articles or metals becomes hard to form a hard and waterproof film after water is evaporated and the aqueous resin penetrates the surface of above objects. The extremely good durability and the extremely waterproof performance are reached, and the exudation of impurities in the objects is sealed, so the influence of the exudation of the impurities in the objects to a next step japanning of the objects is avoided. Compared with general waterproof paints and sealing coats, the waterproof/sealing paint of the invention simultaneously has the functions of waterproof paints and sealing paints, the waterproof/sealing paint which is an aqueous system can be diluted with water, and the waterproof/sealing paint which contains an extremely small amount of organic solvents contains no formaldehyde and no toluene, so the waterproof/sealing paint which has the advantages of environment protection and low usage cost avoids the cost of solvents for diluting the waterproof/sealing paint. The waterproof/sealing paint can be applied to various objects of interior walls and exterior walls of buildings, timbers, metals, rattan articles, paper, various handicrafts and the like.

The invention discloses a method for dyeing polyamide/cotton (viscose) fabrics with acid (neutral) and reactive dyes in a one-bath way. The method comprises the following steps of: adding alkali in reactive dyes till pH value is 11-11.5 and dyeing cotton fibers with the reactive dyes at the low temperature of 60-65 DEG C or two temperature ranges of 60-65 DEG C and 80-85 DEG C; and then adding acid until the pH value is 5-6, and raising the temperature to 95-98 DEG C and dyeing the polyamide fibers with the acid (neutral) dyes; and meanwhile, fixing the colour of the acid (neutral) dyes in the reactive dye soaping process. According to the invention, as the one-bath two-step dyeing technology is used for replacing the traditional two-bath process, the dyeing time is shortened, the yield is increased and the consumption of energy and water and the alkali usage are reduced, thus lowering the production cost and protecting the environment; when the acid (neutral) dyes are used for dyeing, the dye liquid is a buffer system formed by sodium acetate and acetic acid and can improve the dye reproducibility (dyeing right first time) and reduce rehandling. The method has very obvious practical value.

Pectins having a combination of unexpectedly high molecular weights and low degrees of methylation have been isolated from Aloe vera plants, are superior gel pectins for forming calcium cross-lined gels. Such pectins can be obtained by extracting homogenized Aloe Vera plants or portions thereof. These pectins can be used to prepare pharmaceutical compositions comprising pharmacological agents for application to animals and humans, so as to provide controlled release of the pharmacological agent.

The invention discloses a method for in-situ leaching of rare-earth ores from a weathering crust elution-deposited rare earth ore. The method comprises the following steps: holes are drilled in an ore body and drilled from a humus layer, a completely weathering layer to a half weathering layer of the ore body, a guide pipe with an opened upper part and an opened lower part is inserted into the holes and reaches the half weathering layer, and an ore leaching liquid is injected into the guide pipe; a diversion trench is formed in a bedrock to be used for guiding the rare earth leaching liquid into a liquid collecting reservoir; holes are distributed in a net shape along the ridge of the ore body, and the distance between every two holes is 2-3 m; a hopper is mounted at the upper end of the guide pipe, a fixing device is arranged on the guide pipe passing through the humus layer. The method has the advantages that the content of leached rare earth mother liquid impurities is reduced, the subsequent rare earth mother liquid treatment is facilitated, the geological hazards caused by the ore body landslide due to water swelling of clay minerals with high content of the humus layer are reduced, ammonium chloride can be used as a leaching agent, and under the premise of not increasing the impurity removal cost, the rare earth leaching rate is improved, and the selection range of the leaching agent is widened.

Fluorine-containing emulsifiers can be removed from fluoropolymer dispersions by multiple cycles of thermal concentration. After repeated cycles of dilution and extraction the fluorine-containing emulsifier can be reduced to a very low level. The resulting dispersion can be formulated into an aqueous dispersion that can be used for coating applications, such as seal, packing, fabric and metal coating.

Flexible polyurethane foams that satisfy the requirements of FMVSS 302 are produced by reacting a polyisocyanate with a polyol component that includes: (1) from 90 to 99 parts by weight of a polyether polyol having an OH value of from 20 to 200 mg KOH/g and functionality of from 2 to 4 and (2) from 1 to 10 parts by weight of a polyether ester polyol having an OH value of from 150 to 450 mg KOH/g and a functionality of from 2 to 3 in the presence of a blowing agent, catalyst and stabilizer. The foams thus produced are useful as cushioning for furniture and automotive applications.

A plasticizing formulation for producing plasticized fluff pulp. The plasticizing formulation, which preferably is an aqueous solution, includes a primary plasticizing agent, and optionally a secondary plasticizing agent. Preferably, the primary plasticizing agent is 1,4-cyclohexanedimethanol, and the secondary plasticizing agent is triacetin. When the plasticizing formulation is applied to a cellulosic fluff pulp, a plasticized fluff pulp is produced. The resultant plasticized fluff pulp may have one or more of the following: reduced Kamas energy, Mullen strength, and fiber knot and nit contents, when compared to the base cellulosic fluff pulp fiber that is not plasticized.

The invention relates to a special bainite weld rod for repairing railway steel rail and assembled frog crossing which is formed by a weld core and a shield, wherein, the weld core is H08A, H08Mn, H08MnA, H08Mn2SiA, or H08Mn2MoA solder wire, and the shield comprises: marble in 30-50%, fluorite in 10-20%, silicon in 5-20%, titanium dioxide in 1-10%, rare-earth ferrosilicon in 2-10%, ferrotitanium in 3-20%, ferromanganese in 5-20%, ferrosilicon in 1-5%, chromium iron in 1-8%, ferro-molybdenum in 0.1-5%, metal nickel in 0.1-5% and soluble glass adhesive in 10-30%. The inventive weld rod has better welding property and application property which can improve the repairing welding, the tenacity and the compactness of repairing layer, increase the crack resistance of welding fusing coat, attain the impact resistance, and prolong the service life of steel rail and frog crossing. And it can be welded without preheating.

The invention provides a wearable steel plate with low cost and high strength and a producing method thereof. The mass percentage of chemical components of the steel plate are that: C is 0.13-0.20%, Si is 0.15-0.40%, Mn is 0.8-1.50%, P is not more than 0.02%, Cr is 0.10-0.50%, Al is 0.02-0.06%, Ti is 0.005-0.02%, B is 0.0010-0.0020%, and the residue is Fe and inevitable impurities. The producing method for the steel comprises the following steps of highly cleaning steel melting-molten iron desulfuration-converter top-bottom composite blowing-vacuum treatment-blank casting; especially, the technique parameters in the process of slab heating, rolling and heat treatment can be reasonably controlled; the maximum thickness of the made steel plate is 80mm, the Brinell hardness is 370-430 and the hardness is uniformly distributed. The chemical components of the steel contain no precious alloy elements such as Nb, V, Mo and Ni, etc; the steel has low content of alloy, low cost, good roughness, good wearable performance and welding performance; the steel is widely applied for severe working conditions and the mine and the engineering machinery product with high performance requirement on the steel.

The invention provides a degarelix acetate lyophilized powder injection, which consists of degarelix acetate, mannitol and sodium acetate in the mass ratio of 1:(1.2-2):(0.02-0.1). The lyophilized powder injection is obtained by performing freeze drying on the degarelix acetate, the mannitol and the sodium acetate serving as main medicaments. In the preparation process, the stability and safety of a preparation are ensured strictly. The prepared degarelix acetate lyophilized powder injection has the advantages of low content of relevant substances, uniform and stable mass, complete moisture drying, stability in transportation, storage and using processes, convenience for clinical application, high stability and high biological activity, and the like. The preparation method adopted by the invention is simple and effective, has high repeatability and low production cost, and is easy for industrial production.

The invention discloses a low carbon hydrocarbon aromatization method, which comprises that: under the low carbon hydrocarbon aromatization operating condition, a low carbon hydrocarbon material passes through reaction areas at least containing two aromatization catalysts, wherein the low carbon hydrocarbon material passes through a reaction area containing an HZSM-5 molecular sieve aromatizationcatalyst first and then passes through a reaction area containing a hydrogen mordenite aromatization catalyst. The low carbon hydrocarbon aromatization is carried out by using different aromatizationcatalysts, and on the premise of not reducing the yield of aromatic hydrocarbon, the content of benzene and dimethylbenzene with high utilization value in reaction products can be obviously improved,the content of methylbenzene with low utilization value is reduced and the economical efficiency of a low carbon hydrocarbon aromatization process is improved.

A roller comprising a roller core and a roller covering being composed of an elastomer or elastic plastic material is characterized in that the elastomer or elastic plastic material of the roller covering cadditionally comprises fluorinated polyolefin. Preferably, from 0.2 to 25% by weight of a fluorocarbon plastic, in particular of polytetrafluoroethylene powder or fiber, is incorporated into the roller coating material to improve the ink-repellent properties of the roller covering. In one embodiment, the fluorinated polyolefin is employed in the form of a fibrous material, e.g. a web or the like, provided with the coating material and wrapped around the roller to form a surface layer.

The invention relates to a steel rail material and in particular relates to a high-strength bainite steel rail and a production method thereof, which solve the technical problems. The production method comprises the following steps: heating steel containing 0.15wt%-0.30wt% of C, 1.00wt%-1.80wt% of Si, 1.50wt%-2.50wt% of Mn, 0.20wt%-0.60wt% of Cr, 0.05wt%-0.10wt% of Mo and the balance of Fe, rolling the heated steel into a steel rail with needed section, utilizing waste heat of the steel rail, performing accelerated cooling on the rail head of the steel rail at a cooling speed of 3.0-6.0 DEG C/s when naturally cooling the tread surface of the rail head to 450-500 DEG C, stopping accelerated cooling when cooling the center of the tread surface of the rail head to 220-300 DEG C, and performing air-cooling to room temperature to obtain complex phase steel with carbide-free bainite, a small quantity of martensite and a small quantity of residual austenite. The steel is excellent in wear resistance and applicable to heavy haul railway.

The invention discloses an air conditioner. The air conditioner comprises an enhanced vapor injection compressor, a condenser, a vapor-liquid separation header, a subcooler, an electronic expansion valve and high-pressure stop valves, wherein a first port of the vapor-liquid separation header is connected with a first refrigerant feed and discharge port of the condenser; a second port of the vapor-liquid separation header is connected to a first refrigerant feed and discharge port of the subcooler through the electronic expansion valve; a third port of the vapor-liquid separation header is connected with a second refrigerant feed and discharge port of the subcooler; a third refrigerant feed and discharge port of the subcooler is connected with the high-pressure stop valves; a fourth refrigerant feed and discharge port of the subcooler is connected to a suction port of the enhanced vapor injection compressor. The invention further discloses an air conditioner refrigerant adjusting method and device. The refrigerating capacity of the air conditioner based on enhanced vapor injection technology is improved.

Loop-shaped primer used in nucleic acid amplification is an oligonucleotide with 3-20 bases in both 3′ and 5′ ends which can be combined together to form a double-strand under appropriate conditions, resulting in the primer forming a stem-loop structure. The double-stranded structure is opened and the stem-loop structure dissolves when the primer recognizes and hybridizes with the target sequence. If the target sequence is not present the primer can form a stem-loop structure automatically by self-annealing. The primer can comprise a universal tag sequence or not. Together with universal tag sequence primer the primer comprising the universal tag sequence can be used for a second round of amplification. The primer has high specificity and does not form a primer dimmer. The primer is easy to design and is suitable for measuring gene expression and detecting features of nucleic acids such as SNPs and rare mutations.

The invention relates to manganese sulfate and a preparation method thereof, in particular to high purity manganese sulfate monohydrate and a preparation method thereof. In the high purity manganese sulfate monohydrate, the content of manganese is more than 32%; the content of impurities of K, Na, Ca and Mg are lower than 50ppm; and contents of heavy metal and iron impurity are both lower than 10ppm. The preparation method comprises the steps of: firstly adjusting the pH value of solution to 3.5 to 5 for remove impurities for the first time by using iron sulfate as an impurity removing agent; then adjusting the pH value to 4 to 7 using manganese carbonate; adding an adsorbent to remove the impurities for the second time; removing the impurities for the third time by using manganese fluoride as an impurity removing agent under the condition that the pH value is 4 to 7; then removing the impurities for the fourth time by using barium sulfide as an impurity removing agent under the condition that the pH value is 4 to 7; and finally concentrating, crystallizing, washing and drying to obtain the high purity manganese sulfate monohydrate. In the manganese sulfate monohydrate of the invention, the contents of all main metal impurities are lower; the content of the manganese is high; and the requirement of the anode material of a lithium-ion battery can be satisfied.

The invention discloses an aqueous double-component polyurethane varnish and a preparation method of the aqueous double-component polyurethane varnish. The raw material formula of the aqueous double-component polyurethane varnish is composed of a component 1 and a component 2, wherein the component 1 comprises the following components: 55-65% of hydroxy polyurethane dispersion, 15-18% of water, 0.2-0.5% of acetobutyryl cellulose flatting agent, 0.5-0.8% of flowing deformation auxiliary agent, 0.5-0.8% of nano silica particle, 0.1-0.3% of defoamer, 0.3-0.5% of defoaming agent, 0.1-0.3% of thickener, 0.4-0.6% of film-forming auxiliary agent, 0.2-0.5% of aqueous drier and 0.5-1.5% of teflon wax; and the component 2 comprises 15-20% of polyisocyanate and 1-3% of degassing solvent. The aqueousdouble-component polyurethane varnish has the characteristics of fast drying speed and good leveling property, is not easy to generate bubbles, is easy to store, and can endow a varnish film with high hardness and high anti-scratching property.

The invention provides a special organic-inorganic compound fertilizer for sugarcane. The special organic-inorganic compound fertilizer is prepared from the following raw materials in parts by weight: 20-25 parts of bagasse, 10-12 parts of vinasse, 10-15 parts of straw, 13-20 parts of pig manure, 13-20 parts of cow dung, 7-11 parts of edible fungi residue, 6-15 parts of rice chaff, 2-10 parts of household garbage, 1-7 parts of plant ashes, 10-12 parts of vermiculite, 5-7 parts of calcium superphosphate, 2-5 parts of potassium sulfate, 5-7 parts of urea, 0.05-0.25 part of zinc sulfate, 0.08-0.2 part of borax, 0.3-0.5 part of phosphate solubilizing bacteria, 0.1-0.3 part of potassium bacteria, 0.3-0.5 part of azotobacter, 0.5-0.8 part of photosynthetic bacteria and 5-10 parts of an insecticide. The invention further provides a preparation method of the special organic-inorganic compound fertilizer for sugarcane. The special organic-inorganic compound fertilizer for sugarcane is scientific in ratio of nitrogen, phosphorus and potassium, rich in microelements such as zinc and boron, low in chemical fertilizer content, and lasting in fertilizer effect, and has a certain pest control effect.

A process for making lactose-free milk from milk containing lactose and protein, comprising the steps of filtering the milk to produce a permeate and a retentate containing solids and diluting the retentate to reduce the content of the solids.

There is provided a method for reducing the content of at least one water soluble volatile organic compound in a gas. The method comprises contacting the gas with an aqueous acidic oxidizing composition comprising H₂O₂ and a metal catalyst, and submitting the at least one water soluble volatile organic compound and the aqueous acidic oxidizing composition to an UV radiation.

Process for preparing polyoxymethylene homo- and copolymers and apparatus suitable for this purpose An apparatus is described for preparing polyoxymethylene homo- and copolymers. This has the following elements:

• • A) reactor (1) encompassing a polymerization zone (2) and a deactivation zone (3) directly downstream thereof for polymerizing and deactivating polyoxymethylene homo- and copolymers in a homogeneous phase in a manner known per se,
  • B) depressurizing assembly (4), which, if appropriate, has a metering apparatus (5) for additives for the polymer,
  • C) pelletizer (6),
  • D) extraction apparatus (7), and
  • E) if appropriate, a drying apparatus (8). Use of the apparatus and of the polymerization process carried out therein can achieve particularly low residual monomer contents in a simple manner which saves energy.

The invention relates to a waste paper deinking process method, which comprises the processes of pulping, high-concentration sand removal, rough screening, low-concentration sand removal, pre-flotation, fine screening, concentration, heat dissipation, bleaching, post flotation and pulp formation, wherein the pulping process comprises the steps that waste paper and water are placed in a drum pulping machine; 0.1 to 0.8 percent of deinking agent, 0.1 to 0.8 percent of sodium silicate, 0.1 to 0.8 percent of sodium hydroxide and 0.01 to 0.1 percent of surfactant based on the oven dry weight of the waste paper are added into the drum pulping machine; the pulp concentration is controlled to be 3 to 20 percent, the temperature is 20 to 70 DEG C, the pulping time is 10 to 30 minutes, then broken deinked pulp is obtained, and nano silicon dioxide is added into the deinked pulp, wherein the nano silicon dioxide adsorbs ink particles; and because of high specific area of the nano silicon dioxide, the adsorption probability of the nano silicon dioxide and the ink particles is increased, and the small ink particles and gooey particles undergo flocculation to form big particles, which is favorable for flotation and removal.

The invention relates to a lead-free environment-friendly silicon brass alloy material suitable for gravity casting. The chemical elements of the alloy material comprises 70 to 80 percent of brass, 0.7 to 3.0 percent of silicon, 0.2 to 0.70 percent of aluminum, 0.1 percent or less than 0.1 percent of lead, 0.5 percent or less than 0.5 percent of iron, 0.3 percent or less than 0.3 percent of tin, 0.5 percent or less than 0.5 percent of nickel, balance zinc and unavoidable impurities. The lead content of the silicon brass alloy material is greatly reduced and conforms to the environmental protection and health requirements, and meanwhile the lead-free environment-friendly silicon brass alloy material has excellent casing performance, is suitable for casting, in particular for larger-scale gravity casting, and has extensively application prospect in the sanitary-ware industry.

The invention discloses an electroslag remelting quaternary slag system for preparing high-purity stainless steel. The electroslag remelting quaternary slag system is characterized by comprising the following compositions in percentage by weight: 50 to 65 percent of CaF2, 20 to 25 percent of Al2O3, 10 to 25 percent of CaO and 0 to 5 percent of MgO. The quaternary slag system is adopted for electroslag remelting, can effectively reduce the non-metallic inclusion content of the steel and improves the purity of the steel under the condition of non-protective atmosphere and has the characteristics of little investment, low use cost and easy realization.

The present invention discloses a preparation method of a polyester chip for a solar battery back film. A polyester chip semi-finished product with intrinsic viscosity of 0.60-0.64 dl/g and terminal carboxyl group content of 12-18 mol/t is subjected to solid phase polycondensation to obtain the polyester chip for solar battery back film with intrinsic viscosity of 0.75-0.80 dl/g and terminal carboxyl group content of 5-10 mol/t. The preparation method has simple reaction conditions and low production costs; the obtained polyester chip can be separately produced into polyester film suitable for solar battery back without the addition of an anti-hydrolysis agent or an ultraviolet absorber, wherein the polyester film has good water vapor barrier property, resistance to wet heat aging and resistance to light aging. The method is not only friendly to the environment and human, but also avoids the problems of uneven dispersion and inconsistency of product performance of blend film production.

The invention discloses an organic insulating binder for a metal soft-magnetic composite material and a magnet preparation method thereof. The organic insulating binder is composed of liquid A and liquid B, wherein the liquid A is a 0.2%-0.6% silane coupling agent; the liquid B is an insulated coating liquid which is formed by mixing 10wt%-30wt% of alicyclic epoxy resin, 5wt%-15wt% of methyl hexahydrophthalic anhydride, 20wt%-60wt% of silicon resin and 10wt%-40wt% of dimethyl benzene, wherein total dosage of the liquid B is 0.5%-1.5%. The preparation method comprises the following steps: uniformly coating a layer of liquid A silane coupling agent on the surface of metal powder; then, coating the liquid B coating liquid; and preparing the metal soft-magnetic composite material by the steps such as drying, profiling, degreasing and thermal-treating. Compared with an organic binder with other components, the organic substance insulating binder disclosed by the invention has a high heat-resistant temperature and good binding effect, can reduce dosage, so that content of non-magnetic substances is reduced, thereby facilitating improving magnetic conductivity of a magnet and lowering loss. The metal soft-magnetic composite material prepared by adopting the preparation method disclosed by the invention has better magnetic performance and frequency stability.

The invention relates to the field of powered milk, in particular relating to whey protein powder by taking milk as a raw material and a preparation method thereof. The method of the invention comprises the following steps: 1) microfiltration: leading milk or reduced milk to pass through a filtration membrane of 0.1mu m; 2) ultrafiltration: leading milk passing through the microfiltration membrane to pass through the ultrafiltration membrane, wherein the interceptor of the filtration membrane is the whey protein; and 3) carrying out concentration, sterilization and spray drying on the whey protein liquid incepted by the filtration membrane to obtain the whey protein powder. In the method of the invention, soluble whey protein is directly extracted from fresh milk through advanced membrane techniques such as low temperature, microfiltration, ultrafiltration and the like, thus maintaining protein activity for the most part, having higher nutrition value, removing lactose, and containing no additives and residual enzyme. The specific value of tryptophane to long-chain neutral amino acid in whey protein powder prepared by the method in the invention is higher than the specific value of ordinary WPC/WPI, as the whey protein in the invention has higher content of alpha-lactoalbumin and does not contain glycomacropeptide.

Provided is a wavelength converting member made of a sintered body which inhibits color unevenness of exit light after wavelength conversion and has excellent light emitting efficiency and inhibited decrease in mechanical strength. The wavelength converting member includes a plate-like sintered body having one principal surface as a light entrance surface and the other principal surface opposite to the entrance surface as a light exit surface, in which the plate-like sintered body has a porosity of 0.1% or less which has fluorescent material grains containing an activator and light-transmitting material grains, the entrance surface and the exit surface are a sintered surface in which the fluorescent material grains and light-transmitting material grains are exposed without processing.

The invention relates to silicon nitride whisker combined silicon carbide porous ceramic and a production method thereof. According to the technical scheme, the production method comprises: adding a foam stabilizer into deionized water, and magnetically stirring for 12-24 h to obtain foam stabilizer solution; adding a catalyst, isobutene-maleic anhydride copolymer and ceramic powder into the foam stabilizer solution, and mechanically stirring for 5-15 min to obtain silicon nitride/silicon carbide ceramic slurry; adding a foaming agent into the silicon nitride/silicon carbide ceramic slurry, stirring, carrying out injection molding, demolding, drying, and holding the temperature of 1150-1400 DEG C for 2-6 h to obtain the silicon nitride whisker combined silicon carbide porous ceramic. The silicon nitride whisker combined silicon carbide porous ceramic and the production method thereof have the advantages that the preparation process is simple, has low equipment requirements, and is easy to control, low in pollution and synthetic temperature and low in production cost; the produced silicon nitride whisker combined silicon carbide porous ceramic has high porosity, high strength and good toughness and has a great industrial prospect.

The invention discloses a method for preparing grassleaf sweetflag rhizome extract. The method comprises the following steps: extracting the grassleaf sweetflag rhizome by water; concentrating the extracting solution to obtain concentrated solution; leading the concentrated solution onto a non-polar macroporous adsorption resin column for gradient elution, wherein the elution gradient is from water to 35 percent aqueous solution of alcohol; collecting eluate of 15 to 35 percent aqueous solution of alcohol; and drying the eluate to obtain the grassleaf sweetflag rhizome extract. The invention also discloses the grassleaf sweetflag rhizome extract prepared by the method, and application of the extract in preparing a medicament and health-care products or foods for improving learning and memory ability, or application in preparing a medicament for treating alzheimer,s diseases. The grassleaf sweetflag rhizome extract has obvious effects of improving the learning and memory ability, has low content of toxic and side components alpha-asarone and beta-asarone and high safety, and provides new approach for preparing the medicament and the health-care products or the foods for improving the learning and memory ability and the medicament for treating the alzheimer,s diseases.