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36results about How to "Good floatation" patented technology
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Hydrodynamically balancing oral drug delivery system with biphasic release
InactiveUS20060099245A1Promote absorptionMaintain dimensional stabilityBiocidePowder deliveryControlled releaseSmall intestine
The present invention relates to an oral drug delivery system with biphasic release characteristics comprising a porous matrix comprising at least one drug substance, sugar(s), a release retarding polymer, gas generating components and optionally, pharma-ceuti-cally acceptable auxiliary components wherein the pharmaceutical composition further comprises a coating of said drug substance. The pharmaceutical composi-tion, either in the form of pellets (multiparticulate or single unit dosage form), beads, granules, capsules or tablets, is retained in the stomach while selectively delivering the drug(s) at gastrointestinal levels and upper parts of the small intestine over an extended period of time. The release of the drug from the said pharmaceutical composition is characterized by a biphasic release profile of the drug substance, which exhibits both immediate and controlled release characteristics.
Owner:RANBAXY LAB LTD
Bacterial agent for bioremediation of oil-polluted water area and preparation method
InactiveCN103523928AOvercome the disadvantage of being easily washed outDegradableWater contaminantsOn/in organic carrierBioremediationPetroleum
The invention relates to the technical field of petroleum-polluted environment management, and particularly relates to a bacterial agent for bioremediation of an oil-polluted water area and a preparation method. The invention discloses a bacterial agent for petroleum bioremediation, which comprises a petroleum degradation bacterial colony and a biological immobilization carrier and is characterized in that the bacterial colony is fixed in a floatable and degradable biological carrier capable of slowly releasing nutrient substances such as nitrogen, phosphorus and the like. In the biological immobilization carrier, the slow-release fertilizer capable of releasing nutrient substances such as nitrogen, phosphorus and the like serves as a core, and the periphery is enveloped by the biological carrier with the immobilized petroleum degradation bacterial colony. The interior of the biological carrier is of a porous hollow structure so as to keep the floatability, the slow-release fertilizer can continuously provide nutrient substances such as nitrogen, phosphorus and the like for petroleum degradation bacteria, and additional nutrient substances are not required. The petroleum degradation bacterial agent provided by the invention can be applied to the bioremediation of a petroleum-polluted water body.
Owner:NAVY MEDICINE RES INST OF PLA
Snowmobile ski with offset runner and keel
InactiveUS6692009B2Improved performance characteristicsEasy to operateCarriage/perambulator accessoriesWheel based transmissionKeelEngineering
A snowmobile ski includes a bridge adapted to connect to a ski leg of a snowmobile, a ski body having an inner lateral edge, an outer lateral edge, a top surface adapted to be connected the bridge, and a bottom surface adapted for moving over snow, a keel running lengthwise along the bottom surface of the ski body in such a manner that a centerline of the keel is offset from a centerline of the bridge in a direction toward the outer lateral edge of the ski body, and a runner connected to the keel.
Owner:BOMBARDIER RECREATIONAL PROD INC
Watercraft Propelled By a Water Jet
InactiveUS20090093174A1Easy to restartAvoid surface defectsWater sport boardsPropulsive elementsThrottle controlImpeller
A watercraft propelled by a water jet includes an sealed hull portion including an upper deck and a bottom surface, an engine compartment located behind the sealed hull portion and containing a propulsion and steering system including an engine, a bladed impeller driven by the engine for inducting water and forcing the inducted water away from the craft through a directionally displaceable nozzle, and a control lever located on the upper deck including an engine throttle control and a steering control for adjusting the directionally displacement of the nozzle.
Owner:SURFANGO
Preparation method of compound algicide with high alga removal rate
ActiveCN108217868AGood floatationImprove algae removal rateBiocideWater/sewage treatment by irradiationCarbon layerOxygen
The invention discloses a preparation method of compound algicide with a high alga removal rate and belongs to the technical field of algicide. According to the preparation method disclosed by the invention, coal ash and expanded graphite are mixed to serve as a carrier, saccharose is utilized as an outer coated carbon layer precursor, and the carrier and the saccharose are prepared into visible-light catalytic active compound algicide with visible-light catalytic activity is prepared through chitosan adsorption and copper ion coating; the compound algicide is in a worm shape and has good floatability, and an the alga removal rate of the algicide is improved; under irradiation of light, alga can generate oxygen on the surface through photosynthesis, the alga is accelerated to die, a descent rate of a chlorophyll content of the alga is quickened continuously, the alga is accelerated to die, and the alga removal rate of the algicide is improved againfurther; the chitosan and the coal both have better flocculation capacity and adsorption capacity, and the chitosan can generate amino groups with positive charge after reacting with hydrochloric acid; when the amino groups are more, an acid solution and magnetite powder are utilized to jointly modify the coal ash and the expanded graphite; thus, the alga removal rate of the algicide is further improved; the algicide has a wide application prospect.
Owner:广州市弗雷德环保科技有限公司
Rubbers-gun for underwater fishing
InactiveUS20090038600A1Ideal balancingGood floatationSpring gunsLaunching weaponsGlass fiberRotational axis
Rubbers-gun for underwater fishing, comprising a shaft provided at the front with a head and at the rear with a body with a grip and provided with means for retaining and releasing a spear in which the shaft of the gun is made of polyamide reinforced with glass fibres by means of a gas injection moulding process. The cross-section profile of the shaft of the gun is rhomboid, tapered from the centre towards the two ends. The gun also comprises a reel connected to the said body by means that permit an initial positioning of it horizontally to the said shaft, therefore with the axis of rotation substantially perpendicular to the shaft, and a second positioning inclined at a certain angle compared with the said shaft.
Owner:MARES +1
Snowmobile ski with offset runner and keel
InactiveUS20020036387A1Improved performance characteristicsEasy to operateCarriage/perambulator accessoriesSledgesKeelEngineering
A snowmobile ski includes a bridge adapted to connect to a ski leg of a snowmobile, a ski body having an inner lateral edge, an outer lateral edge, a top surface adapted to be connected the bridge, and a bottom surface adapted for moving over snow, a keel running lengthwise along the bottom surface of the ski body in such a manner that a centerline of the keel is offset from a centerline of the bridge in a direction toward the outer lateral edge of the ski body, and a runner connected to the keel.
Owner:BOMBARDIER RECREATIONAL PROD INC
Method for preparing floating-biological adhesion synergistic microparticle
InactiveCN1891208AEasy to makeEasy to operatePharmaceutical non-active ingredientsGranular deliveryMicrosphereMicroparticle
The present invention relates to a preparation method of floatation-bioadhesion synergistic type microgranules. Said preparation method includes the following steps: firstly, utilizing drying system in the water to prepare ethyl cellulose floatation microspheres, then using sodium alginate to make coating in the emulsification system, finally the sodium alginate and ethyl cellulose microparticles are dispersed in chitosan solution to produce ion gelatification and form chitosan film so as to obtain the invented floatation-bioadhesion synergistic type microgranules.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method for floating type powdery aluminum pigment
ActiveCN104479427AGood dispersionIncrease floating valuePigment treatment with non-polymer organic compoundsSilver pasteSolvent
The invention discloses a preparation method for a floating type powdery aluminum pigment. The preparation method includes the step of solvent displacement, wherein a solvent is used for cleaning floating type aluminum silver paste; the step of primary filter pressing, wherein filter pressing is conducted on the floating type aluminum silver paste obtained in the solvent displacement step to obtain a first filter cake; the step of liquid phase dispersion, wherein a solvent is adopted for dispersing the first filter cake to obtain an aluminum sheet suspension; the step of surface treatment, wherein aluminum sheets in the aluminum sheet suspension are coated with surface treating agents. The preparation method has the advantages that the preparation process is simple, consumed time is short, repeatability is high and the stability of the obtained floating type powdery aluminum pigment is high. The floating type powdery aluminum pigment obtained through the method has a remarkable mirror plane effect, is good in dispersing performance and also has good floating performance.
Owner:长沙族兴新材料股份有限公司
System for slowing and controlling to release gas bag floationg
InactiveCN101181226AGood floatationLong floating timePharmaceutical delivery mechanismOil/fats/waxes non-active ingredientsControl releaseMedicine
The invention discloses a sustained-release and controlled-release balloon floating system, which can ensure that the drug can float at the top layer of the stomach contents after entering body and can not enter into small intestine along with the evacuation of foods, so as to improve the drug efficacy. The invention includes a balloon which can provide buoyancy to allow the system to be floated at liquid surface and a sustained / controlled-release preparation containing pharmacological active substances. The system includes three parts: a balloon shell I, gas II and the sustained-release and controlled-release preparation III containing drugs, wherein the gas II occupies one end of the balloon shell I, and the other end is occupied by the sustained-release and controlled-release preparation III, and the two are or are not separated by a partition board / diaphragm IV. The floating preparation which is prepared by the method of the invention can respectively and independently regulate the controlled-release time and the floating time during the prescription and process designs, and when the characteristics of one part of the two parts change, the characteristics of the other part do not be affected, thus, the exploration processes of the prescription and process can be greatly simplified.
Owner:SHENYANG PHARMA UNIVERSITY
Inflatable hot tub kit
InactiveUS20050155145A1Sufficient buoyancyGood floatationWaterborne vesselsBathsFresh waterEngineering
An inflatable hot tub kit that includes a self-supporting tub structure that can be used on ground or used in a body of water. The kit includes a thermostat and hoses designed to connect to an external fresh water supply system. The tub structure comprises three inflatable ring sections that form the sidewalls designed to hold warm or hot water. The upper ring section is octagonal-shaped when viewed in a plan view. In cross-section, the upper ring section is circular and relatively large so that when the tub structure is placed in a body of water, the water edge is approximately 8 to 10 inches below the top surface of the upper section. The middle ring section is flat in cross-section and vertically aligned under the center axis of the upper ring section. The middle ring section provides buoyancy and supports the upper ring section when used on the ground or extends into the body of water to provide buoyancy. Attached to the middle ring section is an inflatable lower ring section. Attached to the lower ring section is a flat, insulated, flexible floor panel. Suitable air inlet / outlet port and a tub-through drain are also provided.
Owner:OHANLON PATRICK
Water surface self-diffusion floating granules and preparation method thereof
InactiveCN106172464AGood floatationSmall particle sizeBiocideAnimal repellantsSelf-diffusionBULK ACTIVE INGREDIENT
The invention discloses water surface self-diffusion floating granules and a preparation method thereof and belongs to the field of pesticide processing. The water surface self-diffusion floating granules are composed of 0.5-70% of pesticide active ingredient, 0.5-60% of buoyancy auxiliary, 0.2-30% of water surface extender, 0.05-10% of dispersant, 0.1-5% of wetting agent, 5-20% of disintegrant and the balance of filler. The preparation method includes: 1), sanding the pesticide active ingredient into a water suspension or an oil suspension; 2), well mixing the buoyancy auxiliary, the water surface extender, the dispersant, the wetting agent, the disintegrant and the filler, well mixing with size ground well in the step 1), adding a certain amount of water for kneading granulation. Wet sanding is adopted in the preparation method, so that no dust is generated in the preparation process; the granules prepared by the method are small in grain size after being disintegrated in water and can form a film which is more continuous; by adding a diffusant with excellent performance, the granules can automatically diffuse on the water surface, diffusion distance and speed and disintegration speed can be adjusted, and the granules can automatically avoid when coming across obstacles and don't get together around the obstacles to cause pesticide damage; the water surface self-diffusion floating granules are an ideal self-diffusion floating granule preparation.
Owner:YANGZHOU SPED CHEM
Overwater overflow-oil recovery device in rotatable roller boom form
PendingCN109183760AWith impact resistanceGood floatationWater cleaningGeneral water supply conservationEngineeringMechanical engineering
The invention relates to an overwater overflow-oil recovery device in a rotatable roller boom form. The device is made of lightweight materials and comprises a roller and oil absorption elements, wherein the roller comprises a stand column (1) fixedly or detachably arranged on the middle of a roller bottom (7), a plurality of wall bodies (2) fixedly or detachably arranged on the circumference of the roller bottom (7), and covers (6) detachably covering the stand column (1) and the wall bodies (2); a shaft hole (12) is formed in the stand column (1); a flexible shaft or a cable penetrates through the shaft hole; the roller bottom (7) and the covers (6) are provided with through holes corresponding to the shaft hole (12); the adjacent wall bodies (2) are connected through a grid-shaped arc pore plate (3); each wall body (2) and the stand column (1) are connected through a grid-shaped plane partition plate (4); the roller is internally divided into a plurality of divided spaces; the oil absorption elements are disposed in each divided space; and the oil absorption elements can freely rotate in the corresponding divided space.
Owner:孙娟
Anemometry tower provided with laser anemometer
InactiveCN102444138AGood floating performanceGood firmness and stabilityFoundation engineeringTowersMarine engineeringLaser
The invention discloses an anemometry tower provided with a laser anemometer, which comprises a foundation of the anemometry tower. The foundation is provided with a bottom plate, side plates are connected on the peripheral walls of the bottom plate, the bottom plate and the side plates are connected to form a box type structure, a plurality of longitudinal supporting rods in the perpendicular and horizontal direction are mounted on the bottom plate, inclined supporting rods are connected among the longitudinal supporting rods, a tower body is mounted at the center of the bottom plate, an adjustable platform is mounted on the upper portion of the tower body and provided with a platform plate, a lead screw is mounted on the platform plate, one end of the lead screw is connected with the tower body, a main inclined supporting rod is mounted among the tower body and the side plates at least, positioning piles are mounted on the periphery of the bottom plate and are connected with one ends of the main inclined supporting rods, and the other ends of the main inclined supporting rods are connected with the tower body. The laser anemometer can be mounted on the anemometry tower, the anemometry tower is short in manufacturing cycle and low in manufacturing cost and is fine in stability after being positioned and sunk, the platform of the anemometry tower can be adjusted horizontally, the laser anemometer can be stably mounted on the platform of the anemometry tower, and acquisition of accurate data of anemometry can be guaranteed.
Owner:郑俊斌
Watercraft propelled by a water jet
InactiveUS7731553B2Easy to restartAvoid surface defectsWater sport boardsCombustion-air/fuel-air treatmentImpellerThrottle control
Owner:SURFANGO
Novel life vest
InactiveCN108860507AImprove securityImprove stabilityVessel signalling devicesLife-savingBody shapeLight reflection
The invention discloses a novel life vest which comprises a life vest main body, a vest body and a sponge floating block, wherein the vest body is fixedly connected to the middle part of the life vestmain body, the sponge floating block is in embedded connection into the life vest main body, light reflection type pull belts are movably connected to the left side and the right side of the back ofthe life vest main body, and telescopic fixed belts are tightly sewed to the top, the middle part and the bottom of the vest body. The novel life vest can be shrinked and expanded according to the body shape of a user, so that the vest body can be attached to the body of the user; a remote connection device is matched with a water level pressure alarm to be used, so that a remote alarm effect is achieved; a light reflection type pull ring can provide a fixed rescue point for a rescuer; a second zipper brings convenience to the user to replace the sponge floating block and the vest body at regular intervals, so that resources are saved; a life saving whistle can be blown to attract attention of surrounding people, so that the user can be saved; the life saving whistle is sewed to a collar through a fixing module, so that use stability of the life saving whistle is improved.
Owner:池州市达宏信息技术有限公司
Solar power generation device provided with floating foam cement board
ActiveCN106788145AGood floatationSave land areaPhotovoltaic supportsWaterborne vesselsRebarThermal insulation
The invention discloses a solar power generation device provided with a floating foam cement board. The floating type solar power generation device comprises a solar photovoltaic panel, a mounting plate, a fixing plate, a mounting support, a fixing frame, the floating foam cement board, steel cable lifting ropes, stabilizing reinforced concrete blocks, lifting rings, floating stabilizing barrels and hydraulic cylinders, wherein the solar photovoltaic panel is mounted on the mounting plate through fixing buckles, the mounting plate is mounted on the fixing plate, the mounting support is connected onto the hydraulic cylinders, the hydraulic cylinders are fixedly mounted on the fixing frame filled with the floating foam cement board, the lifting rings are connected with the stabilizing reinforced concrete blocks through the steel cable lifting ropes and mounted at four corners of the bottom end of the fixing frame, the floating stabilizing barrels are mounted on side surfaces of the fixing frame, and foam cement belongs to a closed-pore honeycomb-like inorganic thermal insulation material. The solar power generation device is characterized in that a large number of closed pores are formed in cement, so that the cement material is light, the honeycomb-like structure has certain strength and good floatability, the solar power generation device is mounted on the fixing frame floating in water, and the land area occupied by a power station is saved.
Owner:山东鑫宏光电科技股份有限公司
Labor-saving ice-breaking device for fishing in winter
ActiveCN109730044AGood ice cutting abilityEasy to use for winter fishingOther angling devicesEngineeringFishing
The invention provides a labor-saving ice-breaking device for fishing in winter. A handle is welded to the right side of the top end of a rod column, a grasp ring is adhered to the outer wall of the top end of the rod column, an upper ice edge is welded to the top end of the right side of the rod column, a top edge is integrally arranged on the top of the upper ice edge, a side edge is integrallyarranged on the right side of the upper ice edge, a cone body is welded to the bottom end of the upper ice edge, a lower ice edge is welded to the middle of the right side of the rod column, accommodating rooms are embedded into the front and back sides of the bottom end of the rod column, a floating pad is movably connected to the top end of each accommodating room through a rotary shaft, an inflating room is embedded onto the back side of the floating pad, an inflating port is embedded into the top end of the back side of the inflating room, movable rooms are embedded onto the left and rightsides of the bottom end of the rod column, a plywood is movably connected to the middle of each movable room through a movable shaft, a pull rod is welded to the bottom end of the plywood, a bottom cone is welded to the bottom end of the rod column through a connecting rod, and a buffer spring is embedded into the middle of the connecting rod. The whole device is stable in structure, convenient to use and operate, quick in ice-breaking speed, small in cracks of ice-broken ice faces and labor- and time-saving.
Owner:威海怡隆渔具有限公司
Anari series mongolian drug intragastric floating sustained release preparation and preparation method thereof
InactiveCN107854671AImprove bioavailabilityImprove complianceOrganic active ingredientsDigestive systemAdjuvantLarge dose
The invention relates to an Anari series mongolian drug intragastric floating sustained release preparation and a preparation method thereof, and belongs to the technical field of manufacturing of drugs. At present, most Anari compounds are powder, and are easy in moisture absorption, adhesion and caking, larger in administration dosage, pungent in flavor and poor in compliance. The Anari series mongolian drug intragastric floating sustained release preparation comprises a main drug and a pharmaceutic adjuvant, wherein the main drug comprises Anari or extract thereof; a sustained release adjuvant is used for constructing a skeleton structure of the drug and controlling the dissolving-out speed of the drug; an often release adjuvant is used for enabling the drug to float and the preparationto be formed; the often release adjuvant comprises a floating auxiliary and / or a filling agent and / or a binding agent and / or a lubricating agent. By adopting a positioning sustained release dosing system, the Anari series mongolian drug intragastric floating sustained release preparation is steady and lasting in drug release and can float sustainably, so that intragastric positioning dosing is achieved, the bioavailability of oral administration of the Anari, the defects of the powder of large dose and frequent dosing can be overcome, bad flavor of the drug can be covered, and the complianceof patients is improved. Therefore, a more ideal treatment effect is achieved.
Owner:张慧文
Extrude-puffing processing technology of aquatic feed
InactiveCN105639693AImprove starch gelatinizationIncrease profitFeeding-stuffOil and greaseSpray coating
The invention discloses an extrude-puffing processing technology of aquatic feed. The extrude-puffing processing technology of aquatic feed especially comprises the following steps: crushing the raw materials by a paddle mill and fully mixing the crushed materials in a mixer; sending the crushed and mixed materials into a conditioner and providing appropriate moisture and temperature to the crushed and mixed materials, so that the temperature is controlled at 60-90 DEG C and the wet-base moisture is controlled at 20-30%, and seasoning agents, pigments, fat as well as liquids such as meat pulp and the like can also be added during the conditioning process; sending the conditioned mixture into a puffing chamber, so that the mixture is pushed by a high-speed rotating screw rod into different areas; suddenly reducing the pressure when the mixture enters into the atmosphere through the circular mould hole, so that the mixture expands impetuously due to rapid escape of the steam; and then, treating the expanded mixture in a drying, cooling and spray-coating post-treatment system after the expanded mixture is shaped by expansion-molding by a molding template.
Owner:TIANJIN MODERN TIANJIAO AQUATIC FEED CO LTD
Snowshoes
Snowshoes are provided which include a footwear supporting plate, a front binding device and a rear binding device. The plate has a lattice-like, essentially flat configuration formed by a plurality of hollow prismatic structures partially superimposed on one another. The main axis (x) of each hollow prismatic structure may be inclined by an angle (α) between 200 and 70° relative to a middle plane of the plate, in such a manner that lower edges of the hollow prismatic structures form sharp edges which allow the plate to grip snow and inner surfaces of the hollow prismatic structures offer high resistance to penetration into snow allowing for the distribution of weight of a user over a wide contact surface, thereby ensuring good floatability.
Owner:BEHRENS ROBERT ERWIN
Buoyancy ultrahigh molecular weight polyethylene fibers and preparation method thereof
ActiveCN110965145AStable structureImprove performanceMonocomponent polyolefin artificial filamentArtifical filament manufactureEpoxyFiber
The invention belongs to the technical field of fiber preparation and discloses buoyancy ultrahigh molecular weight polyethylene fibers and a preparation method thereof. The method comprises the following steps of (1) preheating epoxy resin, heating to 60 -85 DEG C, maintaining for 20 -30 min, degassing for 1 h, adding a curing agent and stirring rapidly upon putting in, and degassing again; and adding hollow glass microbeads while stirring, uniformly mixing, and standing; (2) stirring a silane solution and adding the solution into the step (1), rapidly stirring the mixture for 50 -65 min, anddrying for 2.5 -3.2 hours at 80 -100 DEG C to obtain activated hollow glass microbeads; (3) mixing the hollow glass microbeads with an ultrahigh molecular weight polyethylene solution, stirring and heating to 30 -70 DEG C, maintaining the temperature for 1 -1.2 hours and then forming spinning fluid; and (4) injecting the spinning fluid into a double-screw extruder from a feeding kettle to obtainjelly precursor yarns, and preparing the buoyancy ultrahigh molecular weight polyethylene fibers through extraction and multi-multiple stretching. The ultrahigh molecular weight polyethylene fibers prepared by the method in the invention have the advantages of stable structure, good performance, light weight and good floating performance.
Owner:HUNAN ZHONGTAI SPECIAL EQUIP
Plastic anchor floater
InactiveCN102673739AImprove impact resistanceExtended service lifeWaterborne vesselsBuoysCushionLife length
The invention relates to a plastic anchor floater and belongs to the technical field of machinery manufacturing. A steel shell of the anchor floater is changed into a plastic shell; a foaming body is arranged in the shell; a steel pipe is arranged in the center of the anchor floater; the steel pipe is connected with a clamping plate at the bottom of the anchor floater through a nut and a flat cushion; a gland is arranged at the top of the anchor floater; and a plurality of lifting rings are arranged on the gland. The plastic anchor floater improves impact resistance and corrosion resistance, prolongs the service life and has light weight and high floating performance.
Owner:中国水利水电第十三工程局有限公司橡塑制品厂
A kind of gastric floating tablet of total alkaloids of Corydalis
ActiveCN108057064BGood sustained release effectSignificant effectAntipyreticDigestive systemOfficinalGastric emptying
The invention relates to the field of traditional Chinese medicine preparations, and discloses rhizoma corydalis total alksloid gastric floating tablets. The rhizoma corydalis total alksloid gastric floating tablets are prepared from an active component and pharmaceutic adjuvants, wherein the active component is a rhizoma corydalis total alksloid extract, and the pharmaceutic adjuvants are prepared from a sustained-release framework material, a retarding agent, a floating promoter and a flow promoter; the weight ratio of the active component to the pharmaceutic adjuvants is equal to (1 to 1.1)-(1 to 2.1). The rhizoma corydalis total alksloid gastric floating tablets are short in time consumed by floating up and long in floating duration time, and has a slow-release effect; after being taken, the gastric floating tablets are not affected by gastric emptying in virtue of the floating property and the adhesion of forming gel in water, and can stay in the stomach for a long time; the rhizoma corydalis total alksloid gastric floating tablets are high in bioavailability, strong in drug action and low in local irritation, so that the compliance of a patient is greatly improved.
Owner:ZHEJIANG CHINESE MEDICAL UNIVERSITY
A kind of roxithromycin sustained and controlled release preparation
ActiveCN105412037BImprove hydrophobicityPromote dissolutionAntibacterial agentsOrganic active ingredientsChemical LinkageBond energy
The invention discloses a roxithromycin controlled-release preparation. The roxithromycin controlled-release preparation is mainly prepared from roxithromycin and mesoporous silica, and the mass ratio of roxithromycin to mesoporous silica is (1-10):1. Mesoporous silica is adopted as a controlled-release material. Roxithromycin has high hydrophobicity and is fast dissolved out in the stomach, which is a key feature for guaranteeing the bioavailability of the preparation, after medicine is loaded in mesoporous silica,a crystalline structure is lost, an amorphous or molecular state emerges, the medicine is free of lattice constraint, free energy is large, and the medicine can be more easily dissolved in media; secondarily, a large specific surface of mesoporous silica is favorable for dissolution of the medicine; besides, adsorption of mesoporous silica on roxithromycin is physical adsorption, no chemical bonds are formed, main acting force is achieved through hydrogen bonds, bond energy is low, and medicine molecules can be easily released. The roxithromycin controlled-release preparation is simple in preparation technology and suitable for industrial production.
Owner:西安远大德天药业股份有限公司
A kind of method for preparing floating type powdery aluminum pigment
ActiveCN104479427BGood dispersionGood floatationPigment treatment with non-polymer organic compoundsSilver pasteSolvent
Owner:长沙族兴新材料股份有限公司
High-oil-absorption polypropylene material and preparation method thereof
The invention discloses a high-oil-absorption polypropylene material, which is prepared from the following raw materials in parts by weight: 85 to 100 parts of polypropylene; 2-10 parts of a nucleating aid; 1-10 parts of a phenyl-containing compound; 0.5-25 parts of a foaming agent; 1-5 parts of an oleophylic additive. According to the high-oil-absorption polypropylene material, the specific nucleating aid is adopted so that the prepared product is greatly reduced in ash content, and convenient to recover and dispose; the material is extremely low in density, capable of keeping excellent floatability on the water surface, high in oil absorption rate, good in mechanical property, good in stability, capable of being repeatedly used, capable of still keeping high oil absorption rate after absorbing oil for multiple times and suitable for being widely popularized on the market.
Owner:张乃斌
A kind of preparation method of compound algaecide with high algae removal rate
ActiveCN108217868BGood floatationImprove algae removal rateBiocideWater/sewage treatment by irradiationCarbon layerCu2 ions
The invention discloses a preparation method of compound algicide with a high alga removal rate and belongs to the technical field of algicide. According to the preparation method disclosed by the invention, coal ash and expanded graphite are mixed to serve as a carrier, saccharose is utilized as an outer coated carbon layer precursor, and the carrier and the saccharose are prepared into visible-light catalytic active compound algicide with visible-light catalytic activity is prepared through chitosan adsorption and copper ion coating; the compound algicide is in a worm shape and has good floatability, and an the alga removal rate of the algicide is improved; under irradiation of light, alga can generate oxygen on the surface through photosynthesis, the alga is accelerated to die, a descent rate of a chlorophyll content of the alga is quickened continuously, the alga is accelerated to die, and the alga removal rate of the algicide is improved againfurther; the chitosan and the coal both have better flocculation capacity and adsorption capacity, and the chitosan can generate amino groups with positive charge after reacting with hydrochloric acid; when the amino groups are more, an acid solution and magnetite powder are utilized to jointly modify the coal ash and the expanded graphite; thus, the alga removal rate of the algicide is further improved; the algicide has a wide application prospect.
Owner:广州市弗雷德环保科技有限公司
Connecting device and assembly of connecting device and mating device
ActiveUS20220320796A1Good floatationFacilitate transmissionEngagement/disengagement of coupling partsElectrically conductive connectionsEngineeringStructural engineering
A connecting device and an assembly of the connecting device and a mating device are provided. The connecting device includes an insulating main body, a plurality of terminals, a magnet set, an inner housing, a crown leaf spring, an outer housing, and a wave spring. The plurality of terminals are disposed on the insulating main body, the magnet set is disposed on the insulating main body, and the inner housing is sleeved around the insulating main body. The wave spring and the crown leaf spring are each disposed between the inner housing and the outer housing, and abut the inner housing, so that the insulating main body, the plurality of terminals, the magnet set, and the inner housing are arranged in a floating state.
Owner:NEXTRONICS ENG CORP
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