75 results about "Multicomponent systems" patented technology

Novel injectable depot compositions are provided comprising at least one active agent(s) optionally with one or more pharmaceutically acceptable excipient(s) in the form of a multi-component system preferably comprising at least two components which when administered to a subject in need thereof forms an in situ gel depot or implant at the site of injection upon contact with body fluids. Also described are process for preparation of such compositions and method of using such compositions.

This invention discloses a novel multicomponent system or a single compound that is capable of performing triplet-triplet annihilation up conversion process. (TTA-UC) A solution or solid film that comprises this TTA-UC system or compound is provided. This system or compound can be used in an optical or optoelectronic device.

A buoyancy module comprises a multi-layer outer protective shell that has an exterior surface and an interior surface. A first layer of foam buoyancy material is located adjacent to the interior surface. A second layer of foam buoyancy material that includes macrospheres and syntactic foam is surrounded by the first layer of foam buoyancy material. The multi-layer outer protective shell can include a layer of fiberglass backed by a fibrous plastic liner. In this embodiment, the layer of fiberglass provides the exterior surface of the multi-layer outer protective shell, while the fibrous plastic liner provides the interior surface of the protective shell. The second layer of foam buoyancy material can be a precast material. The precast material can include for example macrospheres and syntactic foam. The first layer of foam buoyancy material is preferably a stronger layer than the second layer of foam buoyancy material. Advantageously, the buoyancy module has a plurality of different layers, wherein the components of greatest strength and density are located on the outside. The multi-component system improves ruggedness of the buoyancy material, and provides increased reinforcement at locations subject to increased bending strengths, and provides a buoyancy module of longer life. In addition the buoyancy module may also include steel support members where bolting loads and other forces are brought to bear when parts are attached.

The invention relates to a graphics processing unit based discrete simulation computation method of a multicomponent system, which is realized on a parallel computation system comprising multiple computation nodes, wherein the computation nodes are provided with graphics processing units (GPU). The discrete simulation computation method comprises the following steps of: decomposing the space of the multicomponent system to be simulated; establishing the mapping relationship between granules and grids inside the multicomponent system; (3) distributing the information of the granules to thread blocks inside the GPUs arranged on the multiple computation nodes, and storing the interaction potential parameters and the simulation setting information of the granules into internal storages of the GPUs; computing acting force born by the granules on the GPUs, and updating the speed and the positions of the granules according to the acting force; and before the simulation of the multicomponent system is completed, repeating executing steps completed in the GPUs till a simulated result is output from the parallel computation system after the simulation is completed. The invention solves the problem of low efficiency caused by selection when the GPUs compute multiple interaction potentials and greatly enhances the computation efficiency compared with a CPU.

The invention discloses a solvent-resistance polyurethane rubber roller and a manufacturing method and application thereof, and belongs to the field of rubber roller preparing. The solvent-resistance polyurethane rubber roller is achieved through combination of multicomponent systems and is formed by mixing and pouring a material component A, a material component B and a material component C, wherein the material component A comprises, by mass, 40%-60% of polyester polyol and 7%-20% of toluene disocynate, the material component B comprises, by mass, 2%-10% of 4-4'-diphenylmethane diisocyanate, 5%-40% of plasticizer and 1%-4% of filler, and the material component C comprises, by mass, 2.5%-8% of chain extender and 0.02%-0.05% of catalysts. The wear-resistance, solvent-resistance and mechanical properties of the solvent-resistance polyurethane rubber roller are obviously improved, and the solvent-resistance polyurethane rubber roller can be widely used in the fields of printing, coating and painting.

The present invention relates to a method and a multi-component system for adsorbing contaminants and/or pollutants from a contaminated hot fluid by using a turbulent air stream, to adiabatically cool the temperature of the fluid, in association with one or more adsorbents. The system of the present invention can also be coupled to a recovery and recycling unit to recover and recycle the contaminant and/or pollutant and the adsorbent material.

The invention provides a Bi0.5Na0.5TiO3-BaTiO3-BiMg0.5Ti0.5O3 lead-free piezoelectric ceramic material, relates to a multicomponent system lead-free piezoelectric ceramic compound and belongs to the perovskite structure piezoelectric ceramic field. The composition provided by the invention can be expressed by a general formula of xBi0.5Na0.5TiO3-yBaTiO3-zBiMg0.5Ti0.5O3, wherein the numeric area of x, y and z is indicated by the shadow area of a ternary phase diagram (the area comprises the boundary line). The lead-free piezoelectric ceramic composition further contains oxide Bi2O3; and the content of oxide Bi2O3 is 1% of the content of Bi ions in the composition. The coercive field of the system changes with the three-component system components between 20kV/cm and 40 kV/cm; the piezoelectric coefficient d33 and the electromechanical coupling coefficient Kp are increased with the increase of the value of y in the polarizable component range; d33 is unequal from 100pC/N to 170 pC/N, while Kp is from 0.1 to 0.3. Besides, the depolarization temperature of the ceramics is slightly reduced between 80 DEG C and 120 DEG C with the increase of y.

A dental material, a dental mixture or a dental multi-component system for making the material of or core for a temporary superstructure for a dental implant by polymerization hardening, consisting of one, two or a plurality of polymerizable (meth)acrylates, and optionally further constituents. The dental material, the dental mixture or the multi-component system is hardenable to a product, and the maximum compressive modulus is 420 MPa, and is used in therapeutic treatments for accelerating the osseointegration of dental implants, in particular according to the method of progressive bone loading. Also described are temporary superstructures and cores themselves, and a temporary dental prosthesis, a kit for making a plurality of temporary superstructures for a dental implant or a plurality of cores for temporary superstructures for a dental implant. A corresponding method of preparing a temporary superstructure or a core is also described.

A multi-component system made from a thermoplastic component and a rubber component containing at least two different peroxide cross-linking agents with particular decomposition temperatures and a method for production of rubber and thermoplastic composite moulded pieces using the multicomponent system and the rubber and thermoplastic composite moulded pieces obtained thus.

The invention provides potassium-sodium niobate and sodium lithium bismuth titanate-system lead-free piezoelectric ceramic, relating to a novel multicomponent-system lead-free piezoelectric ceramic composition, and belonging to the field of perovskite structures piezoelectric ceramic. The composition provided by the invention can be represented by a general formula of (1-z)(K1-xNax)NbO3-zBi0.5(Nal-yLiy)0.5TiO3, wherein x and y are both more than 0 and less than 1, and z is more than 0 and less than or equal to 0.06. The lead-free piezoelectric ceramic composition also can contain one or more oxides and has the general formula of (1-z)(K1-xNax)NbO3-zBi0.5(Nal-yLiy)0.5TiO3+aMalphaObeta (mol%), wherein the MalphaObeta is one or more doped oxides, the mole ratio of the content a to the main component (1-z)(K1-xNax)NbO3-zBi0.5(Nal-yLiy)0.5TiO3 is 0-3%, and M is an element which ranges from univalence to hexavalence and can form solid oxide with oxygen. The optimal piezoelectric constant d33 of the piezoelectric ceramic composition of the system can be more than 200pC/N, and the electromechanical coupling factors kp and kt can be more than 40%; the process is stable, and a traditional piezoelectric ceramic preparation technology and industrial raw materials are adopted to prepare the ceramic composition so that practicality is achieved.

A mixing device produces a multi-component mixture, in particular for medical applications, and has at least one first component and one second component, whereby the first component is a pasty fluid mass, whereby the mixing device has a housing having at least one first opening and a hollow body, whereby the hollow body has an internal space that contains the second component, and the mixing device has a feed plunger for expelling the second component from the internal space of the hollow body, whereby the hollow body has a thread and the feed plunger has a counter-thread that engages the thread of the hollow body, and the mixing device has a propulsion element that is arranged inside the housing, whereby the propulsion element converts a flow of the first component through the housing into a rotary motion, whereby the rotary motion of the propulsion element screws the feed plunger into the internal space of the hollow body, and whereby the second component can thus be extruded from the hollow space into the fluid flow of the first component.

The invention discloses a method for reducing viscosity of residue on evaporation from distillation recovery of a polymerization solvent NMP for producing PPTA. The method is as below: neutralizing a mixed mother liquor containing NMP with alkali, adding composite salt, and conducting coarse steaming and concentration to dryness to obtain pie-shaped residue, wherein the composite salt comprises sulfate and calcium salt; conducting rotary drum evaporative desalination on the pie-shaped residue after coarse steaming and concentration; and isolating salt slag and NMP for refining. The method improves the viscosity of a NMP-water-CaCl2 multicomponent system, reduces the adhesiveness of CaCl2 residue on evaporation in the wall, and avoids the formation of high-viscosity NMP-water-CaCl2 ternary complex adhered to the inner surface of the evaporator and tube wall of a heat exchanger in the evaporation recovery of NMP solvent, so that the multi-effect evaporation process for distillation recovery of NMP solvent can be conducted continuously, stably and efficiently.

The present invention discloses a film which can be completely bio-degraded and its preparation method. Said film is made up by using (wt%) 5-20% of multicomponent system polymer, 60-80% of starch, 5-20% of plasticizer and 0.05-0.2% of defoaming agent and adopting the processes of mixing reaction, preplasticizing treatment, extruding granulation and blow-moulding to form film. Besides, sand invention also provides the concrete composition of every polymer of three polymers of the above-mentioned multicomponent system polymer.

The invention relates to a method for preparing sulfoaluminate cement clinker by using a five-component mineral phase system. The alite-sulphoaluminate cement clinker is prepared by using a CaO-SiO2-Al2O3-Fe2O3-SO3 multicomponent system under the condition of not adding fluorite. The method comprises the following steps: (1) achieving the conditions that the basicity factor [(CaO+MgO)/(SiO2+Al2O3)] is 1.42 and the aluminum and sulfur ratio Al2O3/SO3 is 1.73; (2) uniformly mixing and tabletting 75-80% of limestones, 5-7% of sandstones, 1-2% of coal ash, 6-10% of low-grade bauxite and 5-8% of gypsum, putting in a high-temperature furnace and sintering; and (3) insulating at 950 DEG C in a low-temperature furnace for 30 minutes, directly transferring to a high-temperature furnace at 1450 DEG C, insulating for 40 minutes, cooling along with the furnace to 1300 DEG C, insulating for 40 minutes, and cooling to room temperature after taking for 30 minutes to room temperature so as to obtain the CaO-SiO2-Al2O3-Fe2O3-SO3 multicomponent system cement clinker with coexisting C3S and C4A3S. The cement clinker has the advantages of high early strength and no shrinkage of long-term strength.

The invention relates to a multicomponent-system high-piezoelectric-activity piezoelectric ceramic material and a preparation method therefor and belongs to the technical field of nonmetallic materials. The composition of the material is represented by a general formula, i.e., xPb(Ni<1/3>Nb<2/3>)O<3-y>Pb(Zn<1/3>Sb<2/3>)O<3-z>Pb(Zn<1/3>Nb<2/3>)O3-(1-x-y-z)Pb<1-m-n>BamSrnTiAZr<1-A>O<3-p>WO3, wherein x is not smaller than 0.01 and not greater than 0.14, y is not smaller than 0.01 and not greater than 0.07, z is not smaller than 0.005 and not greater than 0.10, m is not smaller than 0.02 and not greater than 0.16, n is not smaller than 0.02 and not greater than 0.12, A is not smaller than 0.42 and not greater than 0.53, and p is not smaller than 0.002 and not greater than 0.015. The preparation method for the material comprises the steps of synthesizing ingredients, carrying out preburning, carrying out ball-milling, carrying out granulating, carrying out forming, carrying out degumming, carrying out embedded burning, carrying out silver roasting and carrying out polarization. The preparation method has the advantages of simple processing steps, good repeatability and high nondefective rate; and compared with properties of like piezoelectric materials reported in the literature, the properties, i.e., piezoelectric strain constant d33 and planar electromechanical coupling factor Kp of prepared ceramic samples are improved obviously, so that industrial large-scale production is facilitated.

A compact is obtained from a mixed powder of a multi-component system ceramics composed of constitutive elements of at least two metal elements selected from the group consisting of Ti, Al, V, Nb, Zr, Hf, Mo, Ta, Cr, and W, N, and optionally C; and Fe, Ni, Co, or an alloy composed of a constitutive element of at least one metal element of Fe, Ni, and Co. A composite material is prepared by sintering the compact.

The present invention provides a method of creating a macro environment in the stomach for immediate release of acid labile compounds stable at alkaline or near alkaline pH comprising the step of administering a composition comprising acid labile compound stable at alkaline or near alkaline pH together with a water soluble buffer, a water insoluble buffer, a disintegrant and pharmaceutically acceptable excipients. The present invention also provides a pharmaceutical composition of a multi component system in which one component essentially contains an acid labile drug and the other component comprises a fast releasing buffer composition along with pharmaceutically acceptable excipients for oral administration and ingestion by a subject, and process for preparing the same.