Entries |
Document | Title | Date |
20080217239 | Liquid filtration media - A liquid filter with a composite medium that has a nanoweb adjacent to and optionally bonded to a microporous membrane. The membrane is characterized by an LRV value of 3.7 at a rated particle size, and the nanoweb has a fractional filtration efficiency of greater than 0.95 at the rated particle size of the membrane. The nanoweb also has a thickness efficiency ratio of greater than 0.01 at that efficiency. The nanoweb acts to provide depth filtration to the membrane, prefilters particles and extends the lifetime of the membrane. | 09-11-2008 |
20080237117 | COATED ASYMMETRIC MEMBRANE SYSTEM HAVING OLEOPHOBIC AND HYDROPHILIC PROPERTIES - A porous membrane assembly includes, in an exemplary embodiment, a porous membrane substrate having hydrophobic properties. The membrane substrate includes a first side, an opposing second side and a plurality of pores extending therethrough. The membrane substrate also includes a discontinuous layer of an oleophobic coating applied to the first side so that the plurality of pores in the first side are substantially free of the oleophobic coating, and a continuous layer of an amine containing hydrophilic polymer coating applied to the second side of the membrane substrate. | 10-02-2008 |
20080257818 | Semipermeable Composite Membrane and Process for Producing the Same - The present invention aims at providing a composite semipermeable membrane having outstanding water permeability and salt-blocking rate, and extremely small amount of unreacted polyfunctional amine components in the porous support, and at providing a process for producing the composite semipermeable membrane. A composite semipermeable membrane having a skin layer formed on the surface of a porous support, the skin layer comprising a polyamide resin obtained by interfacial polymerization of a polyfunctional amine component and a polyfunctional acid halide component, wherein the porous support has a microporous layer on a base material, and the content of an unreacted polyfunctional amine component in the base material after a membrane washing treatment is 0.5 mg/m | 10-23-2008 |
20090065429 | STIFFENED SURFACE MICROMACHINED STRUCTURES AND PROCESS FOR FABRICATING THE SAME - Stiffened surface micromachined structures and a method to fabricate the same. A silicon substrate ( | 03-12-2009 |
20090120868 | Transmission Oil Filter Comprising a Melt Blown Layer at the Downstream Side - A transmission oil filter has a filtration layer of fiberglass medium and, downstream of the filtration layer, a melt blown layer applied to the filtration layer for preventing or reducing introduction of fiberglass into the liquid to be filtered. The filtration layer of fiber glass medium has two faces and a spunbond layer is attached for improved handling of the filtration layer of fiberglass medium to at least one of the two faces. | 05-14-2009 |
20090184046 | Flat membrane element and manufacturing method thereof - Even when a membrane sheet contains an inorganic material, the membrane sheet and a support plate are properly deposited by a laser emission. In a manufacturing method of a flat membrane element lapping a membrane sheet performing solid-liquid separation on a support plate supporting the membrane sheet and emitting a laser to a mutual joint portion to deposit the membrane sheet and the support plate, when the membrane sheet contains an inorganic material, the support plate is formed by a material having laser penetration and the laser is emitted from the support plate side to the joint portion. | 07-23-2009 |
20090206026 | External pressure type hollow fiber membrane having reinforcing supporter with monofilament for gas separation and water treatment, and method and apprtatus for preapring the same - Disclosed are external pressure type hollow fiber membrane having a reinforcing supporter for gas separation and water treatment, and method and apparatus for preparing the same. The reinforcing supporter is woven only with mono-filaments or by mixed spinning of mono-filaments and multi-filaments. The hollow fiber membrane of the present invention has excellent pressure resistance and high tension force by using the rigid and tubular supporter, an improved softness by using the mono-filaments, and an increased bonding force between the supporter and the coating layer by increasing the concave-convexo degree of the reinforcing supporter. Additionally, the hollow fiber membrane can prevent detachment of the separating filtration layer, which is the coating layer, through the surface weight deduction treatment of the reinforcing supporter, and control the inner pore size of the membrane by treating the internal coagulating solution, thereby providing an excellent water-permeability. | 08-20-2009 |
20090250391 | MODIFIED POLYVINYLIDENE FLUORIDE MEMBRANE, LAMINATED MEMBRANE FOR PROTEIN ADSORPTION, AND MANUFACTURING METHODS THEREOF - A modified substrate for a protein chip wherein a protein adsorptive membrane and a protein non-adsorptive membrane are arranged on the same flat surface is provided as a substrate. | 10-08-2009 |
20090261032 | Filter element with active carbon coating - A filter element has a first filter layer that has an active carbon layer, a top cover layer connected to the active carbon layer and a bottom cover layer connected to the active carbon layer opposite the top cover layer, wherein the first filter layer is folded to a first bellows. At least one second filter layer having an active carbon layer, a top cover layer connected to the active carbon layer and a bottom cover layer connected to the active carbon layer opposite the top cover layer is provided. The at least one second filter layer is folded to a second bellows. The first and second bellows are folded identically. The at least one second filter layer is arranged on the first filter layer in a positive-locking way by fold alignment of the first and second bellows to form a composite of filter layers. | 10-22-2009 |
20100032366 | PROCESS OF FORMING MULTILAYERED STRUCTURES - The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath to effect phase separation and form a porous membrane. The support can be a temporary support or form an integrated support for the membrane. The plurality of layers may be of the same polymer or different, same concentration or viscosity or different and may be subjected to the same processing conditions or different ones to form unique structures. | 02-11-2010 |
20100044302 | Hydrophilic, high protein binding, low fluorescence, western blotting membrane - Hydrophilic membrane particularly suited for blotting applications, preferably Western blotting. A pre-wet hydrophobic membrane substrate, preferably made of PVDF, is contacted with a monomer solution and subjected to a UV-initiated free radical polymerization step to render the substrate permanently hydrophilic. The resulting membrane exhibits low background fluorescence, high protein binding, excellent retention of protein sample spot morphology, and extended dynamic range (high signal-to-noise ratio, enhanced sample detectability). The membrane demonstrates comparable or higher performance in Western blotting applications than conventional nitrocellulose Western blotting membranes, particularly for protein detection at low sample concentrations, and is directly water-wettable, eliminating the need for an alcohol pre-wet step prior to use. | 02-25-2010 |
20100059434 | Abrasion Resistant Membrane Structure and Method of Forming the Same - A membrane filtering device includes a substrate, a support membrane supported by the substrate, and a separation membrane supported by the support membrane. The separation membrane includes material that is substantially embedded into pores of the underlying support membrane. Optionally, the support membrane includes particles that are also substantially embedded into pores of the substrate. | 03-11-2010 |
20100084333 | FABRICATION OF REINFORCED NANOPOROUS MEMBRANES - The present invention discloses a method for manufacturing ultra-thin reinforced membranes from a SOI wafer having a front side and a back side, the front side having an etch stop layer buried under a device layer, provided for by forming reinforcement bars by etching openings in the device layer down to the etch stop layer, filling the openings at least partially by deposition of a first filler, and then polishing the top surface to the silicon surface before depositing a membrane material. | 04-08-2010 |
20100089819 | PLEATED MULTI-LAYER FILTER MEDIA AND CARTRIDGE - A pleated filter element includes a composite depth filter medium formed into a plurality of pleats. The composite depth filter medium includes a plurality of depth filter media layers. Each of the plurality of depth filter media layers includes adsorber particulate matter. Each of the plurality of depth filter media layers may have a thickness less than about 1300 microns. The plurality of depth filter media layers may have at least 50% by weight of adsorber particulate matter. | 04-15-2010 |
20100089820 | DIALYSIS MEMBRANE WITH IMPROVED REMOVAL OF MIDDLE MOLECULES - A hydrophilic semipermeable hollow-fibre membrane for blood treatment, with an integrally asymmetric structure based on a synthetic polymer. The hollow-fibre membrane possesses on its inner surface a separating layer and an adjoining open-pored supporting layer, and has an ultrafiltration rate in albumin solution of 5 to 25 ml/(h·m | 04-15-2010 |
20100140162 | Osmosis membrane with improved flux rate and uses thereof - A membrane structure suitable for use in forward osmosis processes, which membrane structure is comprised of a support membrane comprised of ultra high molecular weight polyethylene and having an active surface which active surface contains a cellulosic coating. | 06-10-2010 |
20100147762 | MEMBRANE ASSEMBLIES AND METHODS OF MAKING AND USING THE SAME - A method of making a membrane assembly is provided. The method comprises forming an inorganic membrane layer disposed on a substrate, and forming a plurality of macropores in the substrate at least in part using anodization. Further, a membrane assembly is provided. The membrane assembly comprises a filtering membrane that is coupled to an anodized substrate comprising a plurality of macropores. | 06-17-2010 |
20100181248 | MEMBRANE LAMINATE - A laminate is provided comprising at least one polysulfone and/or polyethersulfone porous membrane heat bonded to a polyvinylidene fluoride substrate. | 07-22-2010 |
20100200493 | PROCESS OF FORMING MULTILAYERED STRUCTURES - The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath to effect phase separation and form a porous membrane. The support can be a temporary support or form an integrated support for the membrane. The plurality of layers may be of the same polymer or different, same concentration or viscosity or different and may be subjected to the same processing conditions or different ones to form unique structures. | 08-12-2010 |
20100206802 | WELDED STRUCTURE OF SYNTHETIC RESIN MESH, WOVEN FABRIC, KNITTED FABRIC, AND NON-WOVEN CLOTH; FUEL FILTER BODY; AND WELDING METHOD - Two or more sheets of one or more kinds of thermally weldable synthetic resin mesh, woven fabric, knitted fabric, and non-woven cloth are overlaid, and each of the overlaid sheets is welded together so that a prescribed protuberance of molten resin produced when press-welding along the welded part is formed toward a side of the welded part. | 08-19-2010 |
20100224552 | Process for improving the breaking strength and/or tear strength of adsorptive filtering materials - The present invention relates to a process for improving the breaking strength and/or tear strength of a warp-knitted fabric, in particular for use in adsorptive filtering materials having a protective function against chemical poisons and/or warfare agent materials, the process comprising providing the warp-knitted fabric with a multiplicity of wales, a multiplicity of courses and a multiplicity of structural elements. In accordance with the present invention, a portion of the structural elements is configured as to each extend over a plurality of wales, so that in the event of a breaking stress on the warp-knitted fabric or the action of a breaking force the structural elements which each extend over a plurality of wales are pushed together or bundled and an improved breaking force results. | 09-09-2010 |
20100224553 | ULTRAFILTRATION MEMBRANE - The invention relates to a hollow-fibre membrane for ultrafiltration made from a hydrophobic aromatic sulfone polymer and at least one hydrophilic polymer, the membrane having an open-pore separating layer on the lumen side, an adjoining supporting layer with asymmetric, sponge-like pore structure without finger pores and an outer layer adjoining the supporting layer towards the outer surface. The separating layer has a cutoff between 20 000 and 200 000 daltons, a thickness of max. 10% of the membrane thickness and an essentially isotropic pore structure. The size of the pores in the supporting layer initially increases up to a zone with maximum pore size, and then decreases towards the outer layer, and the outer layer exhibits a thickness of 10 to 30% of the wall thickness and an essentially isotropic pore structure. The mean size of the pores in the outer layer is larger than in the separating layer, but smaller than in the supporting layer. The wall thickness of the hollow-fibre membrane lies in the range from 100 to 450 μm. The invention relates furthermore to a method for the production of these hollow-fibre membranes. | 09-09-2010 |
20100243556 | High-throughput asymmetric membrane - A microporous asymmetrical membrane formed of one or more layers wherein the “tight” side of the membrane has an “opened” face or otherwise highly-porous reticulated surface is described. The microporous asymmetrical membrane has high throughput and high flux, even when used for filtering viscous materials, such as serum or plasma. The membrane's surface can be formed by ablation or solvation, or in a two or more layered structure, through an appropriate selection of casting dopes. | 09-30-2010 |
20100243557 | ALUMINA POROUS BODY AND METHOD OF PRODUCING THE SAME - An alumina porous body has a porosity of 15 to 45% and an average pore size of 2 to 15 μm includes 5 to 30 mass % of titanium oxide and at least one element selected from the group consisting of copper, manganese, calcium, and strontium, the total content of oxides of the at least one element being 1.5 mass % or less. | 09-30-2010 |
20100270233 | WATER PURIFYING FILTER AND METHOD FOR FABRICATING THE SAME - A water purifying filter and method for fabricating the same are disclosed. The water purifying filter includes a support substrate, a pattern formed on the support substrate to have at least one hole, membrane protein of an aquaporin group coated on the pattern and a protective layer formed on polymer pattern having the membrane protein coated thereon. | 10-28-2010 |
20100300960 | CERAMIC FILTER - There is provided a ceramic filter provided with a ceramic porous membrane having few defects, small and uniform membrane thickness, and high resolution performance. The ceramic filter includes; a porous substrate | 12-02-2010 |
20100320140 | METHODS AND SYSTEMS FOR INCORPORATING CARBON NANOTUBES INTO THIN FILM COMPOSITE REVERSE OSMOSIS MEMBRANES - A method for fabricating a reverse osmosis membrane is described. The method includes aligning a plurality of carbon nanotubes at the interface of two liquids, the first liquid being an aqueous layer, and the second layer being an organic layer that is immiscible to the aqueous layer, forming a thin layer selective membrane around the aligned carbon nanotubes at the interface of the two liquids, and bonding the thin layer selective membrane/carbon nanotube composite onto a structural support layer. | 12-23-2010 |
20100326902 | Laminated Filtration Media - The present invention provides a multilayer web having at least a first layer and a second layer. The second layer attached to the first layer and the second layer comprising fibers produced from polymeric composition comprising a blend of a thermoplastic polymeric component and a functionalized polymeric component. The functionalized polymeric component is at least 26% by weight of the polymeric components of the second layer. The multilayer web is particularly suited for filtration media. | 12-30-2010 |
20110031183 | Multi-Layer Three-Dimensional Structures Having Features Smaller Than a Minimum Feature Size Associated With the Formation of Individual Layers - Embodiments of multi-layer three-dimensional structures and formation methods provide structures with effective feature (e.g. opening) sizes (e.g. virtual gaps) that are smaller than a minimum feature size (MFS) that exists on each layer as a result of the formation method used in forming the structures. In some embodiments, multi-layer structures include a first element (e.g. first patterned layer with a gap) and a second element (e.g. second patterned layer with a gap) positioned adjacent the first element to define a third element (e.g. a net gap or opening resulting from the combined gaps of the first and second elements) where the first and second elements have features that are sized at least as large as the minimum feature size and the third element, at least in part, has dimensions or defines dimensions smaller than the minimum feature size. | 02-10-2011 |
20110042299 | COMPOSITE MEMBRANE ASSEMBLIES AND METHODS OF MAKING AND USING THE SAME - A composite membrane assembly is provided. The composite membrane assembly comprises a porous substrate, a filtering membrane at least partially coupled to the porous substrate, a polymer membrane at least partially coupled to the filtering membrane, and an interface material at least partially disposed between the filtering membrane and the polymer membrane. | 02-24-2011 |
20110049041 | FUEL FILTER ELEMENT - A fuel filter element includes a first layer and a second layer. The first layer has a first pore size. The second layer is stacked on the first layer and has a second pore size smaller than the first pore size. The second layer is a filter paper made of a fiber including a refined fiber and an unrefined organic fiber. The refined fiber is a cellulose fiber treated with a refining process and fibrillated so as to have a freeness within a range from 120 ml to 180 ml. The unrefined organic fiber has a fiber diameter within a range from 8 μm to 13 μm and is not treated with a refining process. The refined fiber accounts from 70 weight % to 85 weight % of the fiber and the unrefined organic fiber accounts for the remain. | 03-03-2011 |
20110049042 | Porous adsorptive or chromatographic media - A porous substrate capable of adsorptive filtration of a fluid having a porous self-supporting substrate and one or more porous, adsorptive polymeric coatings comprising from about 1 to about 80% of the void volume of the pores of the substrate. The resultant substrate has good convective and diffusive flow and capacity. The substrate may be cross-linked, have one or more capture chemistries attached to it and is useful as a chromatography media for the selective filtration of desired species including biomolecules such as proteins and DNA fragments. | 03-03-2011 |
20110073540 | FORWARD OSMOSIS MEMBRANES - Forward osmosis membranes include an active layer and a thin support layer. A bilayer substrate including a removable backing layer may allow forward osmosis membranes with reduced supporting layer thickness to be processed on existing manufacturing lines. | 03-31-2011 |
20110084017 | REINFORCED, PLEATED FILTER STRUCTURE - A pleated filter structure includes a pleated filtering substrate and a pleated, polymer, mesh reinforcing sheet or netting for assisting in maintaining the pleated configuration of the filtering substrate. The pleated, polymer, mesh reinforcing sheet or netting includes a mechanically degraded polyalkylene terephthalate as the primary polymer therein. A method of making the pleated filter structure includes the steps of obtaining commercial articles having been made from a high crystallinity, flexible polyalkylene terephthalate; and mechanically degrading said articles to decrease the crystallinity and increase the stiffness of the polyalkylene terephthalate and extruding the mechanically degraded articles into an extruded structure stiffer and more amorphous than the polyalkylene terephthalate in the commercial articles. | 04-14-2011 |
20110100900 | Monolith Membrane Module for Liquid Filtration - A monolithic multi-channel substrate having a porous monolithic body or cross-flow filtration module defining a plurality of flow channels disposed in the body and extending from an upstream inlet or feed end to a downstream outlet or exhaust end. Porous channel walls surround each of the plurality of flow channels. The plurality of flow channels have a channel hydraulic diameter less than or equal to 1.1 mm. The porous body further comprises a networked pore structure of interconnected pores forming torturous fluid paths or conduits. The tortuous paths formed by the porous body provide a flow path for directing filtrate separated from a process stream to an exterior surface of the body. | 05-05-2011 |
20110114553 | HOLLOW POROUS MEMBRANE AND PROCESS FOR PRODUCING THE SAME - A hollow porous membrane with a reduced cost and excellent separation characteristic, water permeability, and mechanical strength and a process of producing the hollow porous membrane with an excellent adhesive property between a support and a porous membrane layer at a low cost are provided. The hollow porous membrane includes a porous membrane layer in which dense layers are disposed in the vicinities of an outer surface and an inner surface. In the process of producing the hollow porous membrane, membrane-forming dopes of a first membrane-forming dope and a second membrane-forming dope, which contain the material of the porous membrane layer and a solvent, are successively applied and stacked onto the outer circumferential surface of a hollow support and the applied membrane-forming dopes are simultaneously coagulated. In the process of producing the hollow porous membrane, a porous membrane layer is formed by applying a membrane-forming dope containing a material of the porous membrane layer and a solvent to the outer circumferential surface of the hollow support and coagulating the applied dope, and a hollow braid obtained by circularly knitting a yarn formed of multi-filaments is used as the support. | 05-19-2011 |
20110120934 | METHOD OF PRODUCING MULTIPLE CHANNELS FOR USE IN A DEVICE FOR EXCHANGE OF SOLUTES BETWEEN FLUID FLOWS - The present invention relates to a method of producing multiple channels for use in a device for exchange of solutes between at least two fluid flows. The invention further relates to such a device. At least a first and a second sheet are comprised. The method comprises the steps of providing at least one of the first and second sheets with at least one profiled surface and joining the first and second sheets together with the profiled surfaces facing against each other. Channels are formed by the shape of the profiled surfaces. | 05-26-2011 |
20110120935 | CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING THE SAME, AND FILTRATION FILTER - A crystalline polymer microporous membrane containing a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure; polyhydric alcohol covering at least part of an exposed surface of the crystalline polymer microporous film; and a crosslinking agent, wherein the polyhydric alcohol is crosslinked with assistance of the crosslinking agent. | 05-26-2011 |
20110120936 | Anti-Biofouling Materials and Methods of Making Same - Anti-biofouling nanocomposite material at least partially loaded with copper or silver ions and methods for making same are disclosed. Metal affinity ligands are covalently bound to the polymers that are charged with the metal ions to allow for slow release of metals. | 05-26-2011 |
20110132834 | COMPOSITE SEMIPERMEABLE MEMBRANE AND MANUFACTURING METHOD THEREFOR - In manufacturing a composite semipermeable membrane useful for separating a liquid mixture selectively, it is rendered possible to provide a composite semipermeable membrane that exhibits reduced deterioration of water permeability and solute removing property as a result of drying and that demonstrates reduced economic burden and load for waste liquid treatment without impairing the water permeability or solute removal ratio of the composite semipermeable membrane through change of the membrane manufacturing method, by making a saccharide exist in an aqueous polyfunctional amine solution in performing interfacial polycondensation by bringing the aqueous solution of the polyfunctional amine into contact with an organic solvent solution containing a polyfunctional acid halide on a microporous support membrane. | 06-09-2011 |
20110139706 | REDUCED SOLIDITY WEB COMPRISING FIBER AND FIBER SPACER OR SEPARATION MEANS - A web can comprise a substantially continuous fiber mass and a separation means dispersed into the fiber. The web having a preferred thickness resulting from forming a polymer material and a particulate into a fine fiber layer can have a variety of end uses. A filtration media can include a structure comprising such a web of fine fiber and a substantial volume of particulate embodiment of the separation means. The resulting fine fiber structure provides an improved filtration medium having substantial depth, thickness, and a layered structure. The improved properties of the web results from inclusion of the separation or spacer particulate. | 06-16-2011 |
20110168622 | High Efficiency, High Capacity Filter Media - A high efficiency, high capacity fluid filter element that is suitable for meeting stringent cleanliness requirements has multiple filter layers. These layers include a cellulose and glass fiber first layer, a water repellant polybutylene terepthalate meltblown second layer, and a protective third layer providing structural support to the first and second layers. By way of an appropriate production procedure, the first, second, and third layers are laminated to define the filter element. | 07-14-2011 |
20110174722 | ZEOLITE SEPARATION MEMBRANE, METHOD FOR PRODUCING THE SAME, AND BONDING AGENT - A separation membrane according to the present invention is characterized by having a porous tube containing an alumina as a main component and an attachment member disposed in a connection position of the porous tube, wherein the porous tube and the attachment member are bonded by a ceramic oxide-based bonding agent containing 17 to 48 wt % of SiO | 07-21-2011 |
20110174723 | COMPOSITE SEMI-PERMEABLE MEMBRANE AND METHOD FOR PRODUCING SAME - It is an object of the present invention to provide a composite semi-permeable membrane exhibiting excellent chemical resistance and having practical water permeability and salt-blocking property, and a method for producing the same. The present invention relates to a composite semi-permeable membrane, including a porous support and a skin layer formed on a surface of the porous support, wherein the porous support contains a thermosetting resin porous sheet having a three-dimensional network structure and pores communicating with each other and wherein the thermosetting resin porous sheet has an average pore diameter of 0.01 to 0.4 μm. | 07-21-2011 |
20110198281 | Multi-Layer Three-Dimensional Structures Having Features Smaller Than a Minimum Feature Size Associated With the Formation of Individual Layers - Embodiments of multi-layer three-dimensional structures and formation methods provide structures with effective feature (e.g. opening) sizes (e.g. virtual gaps) that are smaller than a minimum feature size (MFS) that exists on each layer as a result of the formation method used in forming the structures. In some embodiments, multi-layer structures include a first element (e.g. first patterned layer with a gap) and a second element (e.g. second patterned layer with a gap) positioned adjacent the first element to define a third element (e.g. a net gap or opening resulting from the combined gaps of the first and second elements) where the first and second elements have features that are sized at least as large as the minimum feature size and the third element, at least in part, has dimensions or defines dimensions smaller than the minimum feature size. | 08-18-2011 |
20110226689 | SEPARATION MEMBRANE AND METHOD FOR PRODUCING THE SAME - A separation membrane including a separation-functional layer is provided, wherein the separation-functional layer contains a polyvinylidene fluoride-type resin having a melt viscosity of 3,300 Pa·s or more, and also the separation-functional layer has a three-dimensional network structure. A separation membrane is provided having high virus removal performance, high pure water permeability, and high physical durability and high chemical strength, which can also be used in the field of water treatment. | 09-22-2011 |
20110240550 | BLOCK COPOLYMER MEMBRANES AND ASSOCIATED METHODS FOR MAKING THE SAME - A separation matrix comprises a porous surface layer; and a bulk porous support, wherein both the porous surface layer and the bulk porous support comprising a block copolymer. The block copolymer comprises A-B or A-B-A repeating units, wherein A and B at each occurrence are two different blocks of oligomer, or polymer. A structural unit of block A is derived from one or more atom transfer radical polymerization (ATRP)-active monomer or oligomer and a structural unit of block B is derived from a thermoplastic ATRP-active macro initiator. A poly dispersity index of the block copolymer is at least about 2. | 10-06-2011 |
20110240551 | CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING THE SAME, AND FILTRATION FILTER USING THE SAME - A method for producing a crystalline polymer microporous membrane, which contains: placing a first crystalline polymer in a metal mold, and compressing the first crystalline polymer to form a first preforming body; placing a second crystalline polymer in a metal mold, and compressing the second crystalline polymer to form a second preforming body; extruding each of the first preforming body and the second preforming body to form a first extrusion body and a second extrusion body, respectively; laminating the first extrusion body and the second extrusion body to form a laminate; rolling the laminate; heating a surface of the laminate to perform asymmetric heating to thereby give a temperature gradient in a thickness direction of the laminate; and drawing the laminate. | 10-06-2011 |
20110240552 | CRYSTALLINE POLYMER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING THE SAME, AND FILTRATION FILTER USING THE SAME - A method for producing a crystalline polymer microporous membrane, which contains: placing a first crystalline polymer in a metal mold, and compressing the first crystalline polymer to form a first preforming body; placing a second crystalline polymer in a metal mold, and compressing the second crystalline polymer to form a second preforming body; extruding the first and second preforming bodies to form first and second extrusion bodies, respectively; rolling the first and second extrusion bodies to form first and second crystalline polymer films, respectively; heating a surface of the first crystalline polymer film or second crystalline polymer film, or both to perform asymmetric heating to give temperature gradient in a thickness direction thereof; drawing each of the first crystalline polymer film and the second crystalline polymer film; laminating the drawn first and second crystalline polymer films to form a laminate; and heating the laminate to perform heat setting. | 10-06-2011 |
20110240553 | CRYSTALLINE POLYMER MICROPOROUS MEMBRANE AND FILTRATION FILTER - A crystalline polymer microporous membrane, which contains: a laminate of two or more layers including a layer containing a first crystalline polymer and a layer containing a second crystalline polymer, the laminate having a plurality of pores each piercing through the laminate in a thickness direction thereof, wherein the first crystalline polymer has higher crystallinity than crystallinity of the second crystalline polymer, and the layer containing the first crystalline polymer has the maximum thickness thicker than the maximum thickness of the layer containing the second crystalline polymer, and wherein at least one layer in the laminate has a plurality of pores whose average diameter continuously or discontinuously changes along with a thickness direction of the laminate at least at part thereof. | 10-06-2011 |
20110284454 | COMPOSITE MEMBRANE WITH COATING COMPRISING POLYALKYLENE OXIDE AND IMIDAZOL COMPOUNDS - Composite membranes including a coating comprising a combination of polyalkylene oxide and imidazol compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and an imidazol compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more imidazol functional groups. | 11-24-2011 |
20120012520 | FORWARD OSMOSIS MEMBRANES AND METHOD FOR FABRICATING THE SAME - Disclosed are a forward osmosis membrane capable of ensuring resistance to microorganisms, improving water flux by forward osmosis, and minimizing reverse solute flux by maximizing tortuosity of the membrane, and a method for fabricating the same. The disclosed method for fabricating a forward osmosis membrane includes: preparing a filler material including a non-cellulose polymer, an organic solvent for dissolving the non-cellulose polymer, and a pore-forming agent for inducing pore formation in the non-cellulose polymer; coating the filler material on an osmosis membrane backing; and immersing the osmosis membrane backing coated with the filler material in water, so that the organic solvent and the pore-forming agent are evaporated, and pores are formed in the non-cellulose polymer as the non-cellulose polymer is solidified. | 01-19-2012 |
20120018370 | SILICA MEMBRANE AND METHOD FOR MANUFACTURING THE SAME - There is provided a silica membrane | 01-26-2012 |
20120024774 | Filter Medium and Filter Element - A filter medium for removing particles from a fluid flow has a pre-filter layer and a fine-filter layer joined to each other in the flow direction. A first supporting layer is attached to the unfiltered side of the pre-filter layer and a second supporting layer is attached to the filtered side of the fine-filter layer in order to absorb the longitudinal and transverse forces in the event of tensile loading. The traverse force absorbing layer has a greater bending stiffness in a traverse direction while the longitudinal force absorbing layer has a greater bending stiffness in a longitudinal direction. | 02-02-2012 |
20120043274 | FORWARD OSMOSIS MEMBRANE FOR SEAWATER DESALINATION AND METHOD FOR PREPARING THE SAME - A forward osmosis membrane for seawater desalination and a method for preparing the same. The forward osmosis membrane has a composite membrane structure including a nonwoven fabric layer, a hydrophilic polymer layer, and a polyamide layer. The hydrophilic polymer layer formed on the nonwoven fabric layer facilitates an inflow of water from the feed water to the draw solution to enhance flux and realize high water permeability in the direction of osmosis. The polyamide layer not only secures contamination resistance and chemical resistance but also minimizes the back diffusion of salts of the draw solution in the direction of reverse osmosis. Hence, the forward osmosis membrane of the present invention is greatly useful for desalination of high-concentration seawater. | 02-23-2012 |
20120061314 | Porous Composite Membrane - Embodiments of the invention include a liquid filter member that includes a layer of polymeric nano fibers overlying a microporous membrane. A pressure drop of the filter member is substantially the same, or is less than, a pressure drop of the microporous membrane and the filter member has a particle retention in the presence of surfactant that is greater than the particle retention of the microporous membrane alone under the same test conditions. | 03-15-2012 |
20120067812 | Moisture-permeable separating membrane material - A moisture-permeable separating membrane material includes a porous fluororesin membrane, a continuous moisture-permeable resin layer formed on the surface of the porous fluororesin membrane, and a textile layer for reinforcing the porous fluororesin membrane and the continuous moisture-permeable resin layer. The textile layer contains a flame retardant in the inside of each fiber and the surface of each fiber has been treated with a flame retardant. The moisture-permeable separating membrane material makes it possible to improve flame retardancy without deteriorating heat exchange characteristics. | 03-22-2012 |
20120091056 | METHOD FOR PRODUCING CARBON FILM, CARBON FILM AND SEPARATOR - A method for producing a carbon membrane of the present invention is a production method where a carbon membrane obtained by subjecting a carbon-containing layer to thermal decomposition in an oxygen inert atmosphere while sending a gas mixture containing an oxidizing gas thereinto is thermally heated. The carbon membrane is subjected to a heating oxidation treatment with controlling the ratio of the flow rate of the gas mixture to the areas of the carbon membrane to 0.5 cm/min. or more to control (temperature ° C.) | 04-19-2012 |
20120181228 | Polyacrylonitrile Copolymer, Method For Manufacturing Membrane Including The Same, Membrane Including The Same, And Water Treatment Module Using The Membrane - Example embodiments relate to a polyacrylonitrile-based copolymer, a method for manufacturing a membrane including the same, a membrane including the same, and a water treatment module using the same. A membrane according to an example embodiment may include a polyacrylonitrile-based copolymer including a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and/or a repeating unit represented by Chemical Formula 3. The definitions of the above Chemical Formulae 1, 2, and/or 3 may be the same as in the detailed description. Accordingly, the membrane may allow the attainment of a relatively high water permeation amount and a water treatment module having a relatively high energy efficiency. | 07-19-2012 |
20120228213 | SEPARATION MEMBRANE UNIT AND SEPARATION MEMBRANE ELEMENT WITH SAME - A separation membrane unit is provided with two separation membranes ( | 09-13-2012 |
20120285881 | MULTILAYERED CHARGE-MOSAIC MEMBRANE AND MANUFACTURING METHOD THEREFOR - There is provided a multilayered charge-mosaic membrane having a porous supporting layer (A), a porous intermediate layer (B) and a charge-mosaic layer (C), wherein the porous supporting layer (A), the porous intermediate layer (B) and the charge-mosaic layer (C) are located in this order; the porous supporting layer (A) and/or the porous intermediate layer (B) are made of a fiber layer containing hydrophilic fibers; a thickness of the porous intermediate layer (B) is 0.1 to 100 μm; a porosity of the porous supporting layer (A) is larger than a porosity of the porous intermediate layer (B); the cationic and/or the anionic polymers constituting the charge-mosaic layer (C) is a polyvinyl alcohol having an ionic group. Thus, there is provided a multilayered charge-mosaic membrane having a large salt permeation flux and excellent mechanical strength. | 11-15-2012 |
20120312734 | SUPER ABSORBENT CONTAINING WEB THAT CAN ACT AS A FILTER, ABSORBENT, REACTIVE LAYER OR FUEL FUSE - The web of the invention can comprise a super absorbent layer that can act as an moisture sensitive fuel shut-off valve, absorbent, adsorbant or reactant. The web of the invention can comprise a super absorbent fabric or layer made of a superabsorbent particle or fiber. Fluid, gas or liquid, that flows through or by the assemblies of the invention can have any gas, liquid or solid material dispersed or dissolved in the fluid interact with the super absorbent particulate. The structures of the invention can act simply as flow-by reactive, absorptive, or adsorptive layers with no filtration properties, or the structures of the invention can be assembled into filters. | 12-13-2012 |
20120318729 | High Flux Thin-Film Composite Forward Osmosis and Pressure-Retarded Osmosis Membranes - One aspect of the invention relates to customized thin-film composite membranes comprising: a porous support; a selective barrier; and one or more polymeric additives dispersed in the porous support in an amount from at least about 1% and about 50% by weight of the porous support. Another aspect of the invention relates to a method of fabricating a porous support comprising the steps of: preparing a polymer solution comprising a polymer, a polymeric additive, and a first liquid; contacting a surface with the polymer solution; and evaporating the liquid. Another aspect of the invention relates to the use of the thin-film composite membranes disclosed herein in osmotically driven membrane processes. | 12-20-2012 |
20130020251 | SEPARATION MEMBRANE AND METHOD FOR PRODUCING SAME - Disclosed is a separation membrane comprising—an elongated substrate having fluid permeability and a separation layer formed at the surface of said substrate—wherein the aforementioned separation layer comprises a predetermined thickness section having a predetermined thickness and thin sections each positioned on the outside of both edges in the widthwise direction of said predetermined thickness portion and having a thinner thickness than the aforementioned predetermined thickness, and there is a separation-layer-lacking section, at which only the aforementioned substrate is present and the aforementioned separation layer is absent, between the outside edges in the widthwise direction of each of said thin sections and the outer edges in the widthwise direction of the aforementioned substrate. The separation membrane can be produced by using coating bar having a protrusion on both the left and right ends of the surface that contacts a macromolecule solution for forming the separation layer. | 01-24-2013 |
20130043183 | Electron Source Modification Of Microporous Halocarbon Filter Membranes - Versions of the invention include electron beam treated microporous halocarbon membranes, particularly fluoro-carbon membranes, and methods for treating one or more surfaces of a polymeric porous halocarbon membrane with electron beams. The modified porous membrane is stable, resists dewetting, and retains its mechanical properties and chemical inertness. | 02-21-2013 |
20130092623 | POROUS MULTI-LAYER FILTER - In a filter for microfiltration, a filtration layer is protected so as not to be damaged. A porous multi-layer filter, which is a laminated body of three porous stretched PTFE sheets that have been biaxially stretched in the longitudinal and transverse directions, includes a filtration layer as a middle layer, a protection layer stacked on one surface of the filtration layer on the liquid-to-be-treated inflow side, and a support layer stacked on another surface of the filtration layer, in which the one surface and the other surface of the filtration layer are fusion-bonded to the protection layer and the support layer at boundaries therebetween, pores of the protection layer and pores of the support layer three-dimensionally communicate with pores of the filtration layer, and the mean pore size of pores of the filtration layer is smaller than the mean pore size of pores of each of the protection layer and the support layer. | 04-18-2013 |
20130105383 | NANOFILTRATION-TYPE THIN FILM COMPOSITE FORWARD OSMOSIS MEMBRANE AND A METHOD OF SYNTHESIZING THE SAME | 05-02-2013 |
20130105384 | THIN FILM COMPOSITE OSMOSIS MEMBRANES | 05-02-2013 |
20130146529 | FILTER MATERIAL FOR FLUIDS - The invention relates to a filter material for fluids, in particular hydraulic fluids, comprising a single- or multi-layered filter medium ( | 06-13-2013 |
20130233788 | COMPOSITE MEMBRANE WITH COMPATIBLE SUPPORT FILAMENTS - A filtering membrane has a supporting structure comprising filaments and is coated with a dope to produce a polymeric membrane layer. Some or all of the filaments comprise a second polymer that is soluble or swellable in a solvent of the dope. The supporting structure may be braided with yarns. One or more yarns may comprise filaments comprising the second polymer. In one example, a braided tubular support is coated with a dope based on PVDF in NMP. Some or all of the yarns of the braid are made of bi-component core-sheath PET-PVDF filaments. With as few as 4% of the yarns in the braid made of the bicomponent filaments, peel strength and pull force of the membrane is improved relative to a braid made entirely of PET yarns. In experimental examples, unpeelable composite membranes were produced. The membrane may be used, for example, for water or wastewater filtration applications. | 09-12-2013 |
20130233789 | HIGH EFFICIENCY AND HIGH CAPACITY GLASS-FREE FUEL FILTRATION MEDIA AND FUEL FILTERS AND METHODS EMPLOYING THE SAME - High efficiency and high capacity glass-free filtration media include a blend of synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, wherein the fibrillated cellulosic fibers are present in the media in an amount to achieve an overall filtration efficiency at 4 microns of 95% or higher and a ratio of filtration capacity to media caliper of 0.5 mg/in | 09-12-2013 |
20130313185 | FORWARD OSMOSIS MEMBRANE AND METHOD OF MANUFACTURE - A forward osmosis membrane ( | 11-28-2013 |
20130327701 | SEPARATION MEMBRANE AND WATER TREATMENT DEVICE INCLUDING A SEPARATION MEMBRANE - A separation membrane including a polymer having a structural unit represented by the following Chemical Formula 1, and a water treatment device including a separation membrane, are useful for desalination. | 12-12-2013 |
20130334129 | COMPOSITE MATERIAL FOR PURIFICATION OF A LIQUID BY FILTRATION - The invention relates to composite materials, more specifically to composite membrane materials on the basis of polymeric materials used for the purification of a liquid, in particular drinking water. The novel composite material for the purification of a liquid by filtration is formed from a polymeric membrane in the form of a fibrillar-porous matrix comprising a hydrophilic polymer and a metallic antibacterial agent. The fibrillar-porous matrix comprises, at least in part of the volume thereof, stable active zones consisting of clusters of a metallic antibacterial agent in combination with molecules of hydrophilic polymer, wherein at least some of the clusters of metallic antibacterial agent are bonded to one another and to the surface of the pores of the matrix by means of the molecules of hydrophilic polymer, wherein at least some of the clusters of metallic antibacterial agent are additionally chemically bonded to the surface of the pores of the matrix, wherein the mean distance between the active zones is smaller than at least three times the mean diameter of the pores of the matrix. The technical result achieved using the invention consists in achieving stable hydrophilicity of the polymeric membrane during use thereof while at the same time maintaining the permeability of the polymeric membrane and increasing the bacteriostasis of the composite material. An additional technical result achieved using the invention consists in increasing the bacteriostasis of the juxtamembrane region during filtration of a liquid. | 12-19-2013 |
20140034569 | REVERSE OSMOSIS MEMBRANE HAVING HIGH INITIAL PERMEATE FLUX - The present invention relates to a reverse osmosis membrane including: a porous support; a polysulfone layer formed on the porous support; and a polyamide active layer formed on the polysulfone layer, wherein the polyamide active layer is formed through interfacial polymerization between an amine compound and an acyl halide compound, and the acyl halide compound includes a monofunctional acyl halide and a polyfunctional acyl halide, and a method of manufacturing the same. | 02-06-2014 |
20140048476 | Atmospheric Pressure Microwave Plasma Treated Porous Membranes - Versions of the invention include compositions and methods for making them that include a polymeric porous membrane with one or more atmospheric pressure microwave plasma modified surfaces. The modified porous membrane is stable, non-dewetting, and retains its mechanical strength. | 02-20-2014 |
20140054214 | BRAID WELDING - A tubular support for use with a hollow fiber membrane is made with an apparatus that comprises a forming machine and an ultrasonic welding machine. The apparatus may also include a coating nozzle for depositing a dope on the support. In operation, filaments are formed into a tubular structure in which the filaments cross each other in radial and circumferential directions, for example a braid. The filaments are ultrasonically welded together at intersections between them. The support is combined with a polymeric membrane wall to form a hollow fiber membrane. | 02-27-2014 |
20140054215 | FORWARD OSMOSIS MEMBRANES - Forward osmosis membranes include an active layer and a thin support layer. A bilayer substrate including a removable backing layer may allow forward osmosis membranes with reduced supporting layer thickness to be processed on existing manufacturing lines. | 02-27-2014 |
20140158610 | COMPOSITE MIXED MATRIX MEMBRANES FOR MEMBRANE DISTILLATION AND RELATED METHODS OF MANUFACTURE - The present invention relates to a membrane distillation system comprising a flat-sheet composite mixed matrix hydrophilic/hydrophobic membrane having at least a hydrophilic layer and a hydrophobic layer. The hydrophilic layer comprises a hydrophilic polymer and inorganic nanoparticles having high thermal conductivity. The hydrophobic layer comprises fluorinated surface-modifying macromolecules (SMM). Also disclosed is a phase inversion method for manufacturing the membrane. | 06-12-2014 |
20140175006 | METHOD OF PREPARING COMPOSITE MEMBRANE MODULE - A method of preparing a composite membrane module includes preparing a single membrane module to which a hollow fiber support layer is potted; and forming an active layer on a surface of the hollow fiber support layer through interfacial polymerization by bringing a surface of the hollow fiber support layer into contact with a first solution comprising an amine and a second solution comprising an acyl halide (in that order). The method can form an active layer having a uniform thickness and good processability. A composite hollow fiber membrane module prepared by the method exhibits a good salt rejection rate. | 06-26-2014 |
20140183128 | POLYAMIDE WATER-TREATMENT SEPARATION MEMBRANE WITH IMPROVED ANTIFOULING PROPERTIES AND MANUFACTURING METHOD THEREOF - A water-treatment separation membrane with good antifouling properties includes a support having pores, a polyamide layer formed on the support, and a passivation layer comprising specific materials formed on the polyamide layer. | 07-03-2014 |
20140202952 | MULTILAYER ANODIZED ALUMINIUM OXIDE NANO-POROUS MEMBRANE AND METHOD OF MANUFACTURE THEREOF - The present invention relates to a method of producing multilayer anodized aluminium oxide nano-porous membrane and the membrane produced thereof. Further the invention relates to the nano-porous multi-layer membrane for filtration application. The three layered membrane of the present invention avoids sticking of solute components on the surface obviating the problem of coagulation. This membrane imparts anti coagulation capability wherein in-spite of sticking of the solute component on the surface of the membrane appropriate passage is still available for liquid/small solutes to pass beneath the said stuck solute component to enhance effective surface area for filtration obviating the problem associated with coagulation. | 07-24-2014 |
20140202953 | Multilayer Membrane Containing Carbon Nanotube Manufactured by Layer-By-Layer Assembly Method - Disclosed herein is a multilayer membrane containing carbon nanotube manufactured by a layer-by-layer assembly method, the multilayer membrane according to the present invention having excellent (i) flux property, (ii) anti-fouling (in particular, anti-protein-fouling) property, and (iii) flux recovery property by a simple water cleaning process even after the membrane is fouled. | 07-24-2014 |
20140311966 | MODIFIED SURFACES - The invention provides a method for producing a modified surface ( | 10-23-2014 |
20140326657 | SEMI-PERMEABLE FILM, MEMBRANE INCLUDING THE SEMI-PERMEABLE FILM, AND METHOD OF MANUFACTURING THE SEMI-PERMEABLE FILM - The present disclosure pertains to a semi-permeable film including a polyhedron oligomer silsesquioxane derivative dispersed in a polymer matrix, a method of manufacturing the same, a separation membrane including the semi-permeable film, and a water treatment device including the separation membrane. | 11-06-2014 |
20140326658 | Triple Layer Hydrophobic-Hydrophilic Membrane for Membrane Distillation Applications - This invention relates to a triple layer composite nanofiber membrane for Membrane Distillation (MD) applications. The triple layer membrane has an extremely hydrophobic nanofiber layer, a hydrophobic microporous middle layer and a hydrophilic backing layer for MD applications. | 11-06-2014 |
20140339153 | MONOFILAMENT-REINFORCED HOLLOW FIBER MEMBRANE - A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem common in prior art multifilament braid-supported tubular membranes. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable it can be infiltrated with membrane polymer which, when coagulated embeds the braid positioning it around the lumen. The spiral weave, free of any circumferentially constricting monofilament, when embedded in film, allows the membrane to be biaxially distensible. In other words, the membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible. | 11-20-2014 |
20140360930 | DRY FORMED FILTERS AND METHODS OF MAKING THE SAME - The disclosure includes, in some embodiments, a filter element that includes a first porous outer layer formed from a nonwoven material, a second porous outer layer formed from a nonwoven material, and at least one inner porous layer formed from a high loft nonwoven material (or other suitable material) disposed between the first porous outer layer and the second porous outer layer. The high loft nonwoven material has a three dimensional matrix formed by entangled and bonded fibers that cooperate to form a plurality of three dimensional interstices between the fibers for maintaining an open and tortuous flow path for fluid to pass through. The filter element also includes filter aid particles dispersed in the interstices of the high loft nonwoven material. | 12-11-2014 |
20140360931 | DRY FORMED FILTERS AND METHODS OF MAKING THE SAME - The disclosure includes, in some embodiments, a filter element that includes a first porous outer layer formed from a nonwoven material, a second porous outer layer formed from a nonwoven material, and at least one inner porous layer formed from a high loft nonwoven material (or other suitable material) disposed between the first porous outer layer and the second porous outer layer. The high loft nonwoven material has a three dimensional matrix formed by entangled and bonded fibers that cooperate to form a plurality of three dimensional interstices between the fibers for maintaining an open and tortuous flow path for fluid to pass through. The filter element also includes filter aid particles dispersed in the interstices of the high loft nonwoven material. | 12-11-2014 |
20150034550 | Filter Element for Liquid Filtration - A filter element for liquid filtration has a first layer and a second layer. The first and second layers are arranged one behind the other in the direction of flow. The first layer is a filter layer of cellulose, and the second downstream layer is a nonwoven of plastic fibers, wherein the second layer has a smaller thickness than the first layer. | 02-05-2015 |
20150041389 | Fluoropolymer Hollow Fiber Membrane with Fluoro-copolymer and Fluoro -terpolymer bonded end portion(s) - A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of Polytetrafluoroethylene (PTFE), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the PTFE hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives. Furthermore, the PTFE hollow fibers can be treated with a fluoropolymeric solvent solution before the chemically resistant film is applied to enhance the adhesion of the PTFE fiber to the film. PTFE hollow fibers, and its respective fluoro-co and terpolymers as potting films impart high packing densities, superb chemical resistance and temperature resistance without membrane contamination, or low fiber pull strength, as is sometimes observed with standard potting materials such as polyurethane and epoxy. | 02-12-2015 |
20150053605 | METHOD FOR MANUFACTURING SILICA MEMBRANE FILTER, AND SILICA MEMBRANE FILTER - A method for manufacturing a silica membrane filter includes performing, at least once, a fired membrane forming operation having a membrane forming step of applying, to a porous substrate, a precursor sol which is a sol of a silicon alcoxide including a p-tolyl group to form a precursor sol membrane, a drying step of drying the precursor sol membrane formed in the porous substrate to form a dried membrane, and a firing step of firing the dried membrane formed in the porous substrate to form a fired membrane, thereby preparing the silica membrane filter including the porous substrate and a silica membrane which is the fired membrane formed in the porous substrate, and a ratio of a total mass of the silica membrane to a total mass of the dried membrane is 38 mass % or more and 85 mass % or less. | 02-26-2015 |
20150060355 | Heat-Pressed Activated Carbon Polypropylene Composite Filter Device - A heat-pressed activated carbon polypropylene composite filter device has a central filtering core, a composite filtering core, and two covers. The composite filtering core is mounted around the central filtering core and has a carbon-polypropylene filter layer and a polypropylene layer. The carbon-polypropylene filter layer is made of polypropylene nonwoven on which multiple activated carbon granules are heat-pressed. The polypropylene layer is made of polypropylene and is covered on the carbon-polypropylene filter layer by a meltblown process. The covers are mounted on the ends of the composite filtering core respectively. | 03-05-2015 |
20150076054 | SYSTEMS, DEVICES, AND METHODS FOR BODILY FLUID SEPARATION MATERIALS - In one embodiment described herein, a bodily fluid separation material is provided comprising a formed component capture region and a bodily fluid pass-through region. The pass-through region has structures with a reduced liquid leaching quality relative to than the capture region, wherein during separation material use, bodily fluid enters the capture region prior to entering the pass-through region. Optionally, a bodily fluid pass-through region has a reduced amount of liquid leaching material relative to than the capture region. | 03-19-2015 |
20150083658 | METHOD FOR THE PRODUCTION OF A FILTER MEMBRANE AND FILTER MEMBRANE - A method for the production of a filter membrane (1), whereby as starting material for the membrane production, at least one filler ( | 03-26-2015 |
20150108060 | HOLLOW POROUS MEMBRANE - A hollow porous membrane of the present invention comprises a plurality of porous membrane layers, at least two layers of which are formed using a thermoplastic resin (a) having a mass average molecular weight of 500,000 or more, and the hollow porous membrane having a bursting pressure of 200 kPa or more when an internal pressure is applied and exhibiting virus removal performance of LRV 4 or more in the case of using MS2 phage as a test bacterium. | 04-23-2015 |
20150108061 | FORWARD OSMOSIS MEMBRANE FOR SEAWATER DESALINATION AND METHOD FOR PREPARING THE SAME - A forward osmosis membrane for seawater desalination and a method for preparing the same. The forward osmosis membrane has a composite membrane structure including a nonwoven fabric layer; a hydrophilic polymer layer; and a polyamide layer. The hydrophilic polymer layer formed on the nonwoven fabric layer facilitates an inflow of water from the feed water to the draw solution to enhance flux and realize high water permeability in the direction of osmosis. The polyamide layer not only secures contamination resistance and chemical resistance but also minimizes the back diffusion of salts of the draw solution in the direction of reverse osmosis. Hence, the forward osmosis membrane of the present invention is greatly useful for desalination of high-concentration seawater. | 04-23-2015 |
20150136688 | MEMBRANE, WATER TREATMENT MEMBRANE, WATER TREATMENT DEVICE, AND METHOD OF MANUFACTURING THE MEMBRANE - A membrane may include a polymer matrix and a compound represented by Chemical Formula 1, | 05-21-2015 |
20150336038 | FILTER MATERIAL FOR A FLUID AND DRAINAGE LAYER FOR SUCH A FILTER MATERIAL INCLUDING A FILTER ELEMENT - The invention relates to a filter material for a fluid, in particular in the form of a hydraulic fluid, said filter material comprising a multi-layer filter medium ( | 11-26-2015 |
20150343353 | FILTER MATERIAL, IN PARTICULAR FOR HYDRAULIC FILTERS - A filter material, in particular for hydraulic filters, comprises at least one filter layer ( | 12-03-2015 |
20150343393 | COMPOSITE SEMIPERMEABLE MEMBRANE - Provided is a composite semipermeable membrane having a high salt removal rate and a high water permeability. The composite semipermeable membrane comprises a substrate, a porous support layer formed on the substrate, and a separation functional layer formed on the porous support layer, the hydrophilic macromolecule concentration on the substrate-side surface of the porous support layer being higher than that on the separation functional layer-side surface. | 12-03-2015 |
20150343395 | MEMBRANE COMPRISING SELF-ASSEMBLED BLOCK COPOLYMER AND PROCESS FOR PRODUCING THE SAME BY HYBRID CASTING (IIb) - Disclosed are membranes formed from self-assembling block copolymers, for example, a diblock copolymer of the formula (I): | 12-03-2015 |
20150367287 | SPLICED FIBER-REINFORCED OUTER SHELL FOR CYLINDRICAL FILTRATION ELEMENT - A filtration element with a fiber-reinforced shell and a method for fabricating the same. The fabrication method including the steps of: i) coating a multi-strand fiber with a liquid resin, ii) winding the coated fiber about the cylindrical filtration element, and iii) solidifying the resin to form a fiber-reinforced shell. The method is characterized by utilizing a spliced fiber formed by: a) aligning an end of a first multi-strand fiber with an end of a second multi-stand fiber such that the aligned fibers extend along a common axis (X), b) wrapping a layer of a heat-shrinkable film about the outer diameter of the aligned ends of the fibers wherein heat-shrinkable film includes a layer of adhesive that contacts the overlapping strands of the fibers, and c) heating the film so that the film draws inward upon the aligned ends of each fiber and forms an integral bond such that the effective cross-sectional area of a section of fiber. | 12-24-2015 |
20150376032 | TOOL FOR FRACTIONATING DIOXINS - A fractionating tool capable of fractionating dioxins contained in a solution of dioxins includes a tubular body opening at both ends, and a purification layer and an adsorption layer packed therein. The adsorption layer includes a first adsorption layer including an activated carbon-containing silica gel layer and a graphite-containing silica gel layer, and a second adsorption layer including an alumina layer. When a solution of dioxins is injected into the purification layer and then a solvent capable of dissolving dioxins is supplied thereto, the solvent dissolves dioxins and passes through the purification layer and the adsorption layer. In this process, non-ortho PCBs, PCDDs and PCDFs among dioxins are adsorbed to the first adsorption layer, and mono-ortho PCBs among dioxins are adsorbed to the second adsorption layer. As a result, dioxins are fractionated. | 12-31-2015 |
20160001203 | MONOLITHIC SEPARATION MEMBRANE STRUCTURE AND METHOD OF MANUFACTURE THEREOF - A monolithic separation membrane structure comprises a substrate, a first support layer and a separation membrane. The substrate is composed of a porous material and including a plurality of through holes. The first support layer is formed on an inner surface of the plurality of through holes. The separation membrane arranged in the first support layer. The first support layer includes an aggregate material having alumina as a main component, an inorganic binder have titania as a main component, and a sintering additive having at least one of silica and magnesia as a main component. | 01-07-2016 |
20160016126 | Fluoropolymer Article For Bacterial Filtration - A sterilizing grade filter including at least two non-sterile fluoropolymer membranes positioned in a stacked configuration is provided. The fluoropolymer membranes a bubble point from about 10 psi to about 50 psi, a thickness less than about 10 microns, and a mass/area less than about 10 g/m | 01-21-2016 |
20160114291 | ACID RESISTANT PBI MEMBRANE FOR PERVAPORATION DEHYDRATION OF ACIDIC SOLVENTS - A pervaporation membrane may be an acid-resistant polybenzidimazole (PBI) membrane. The acid-resistant PBI membrane may be a PBI membrane chemically modified by a process selected from the group consisting of sulfonation, phosphonation, cross-linking, N-substitution, and/or combinations thereof. The membrane may be thermally stabilized. A method for the dehydration of an acid material may include the steps of: contacting an acidic aqueous solution with a membrane of an acid-resistant polybenzidimazole; taking away a permeate stream rich in water; and taking away a concentrate steam rich in the acid material. The acidic aqueous solution may be acetic acid. | 04-28-2016 |
20160129176 | BLOOD FILTER AND METHOD FOR MANUFACTURING THE SAME - This is to provide a blood filter comprising a porous element; and a copolymer which exists in at least a part of a surface of the porous element, and which contains a recurring unit containing an organic group of the following formula (a) and a recurring unit containing an organic group of the following formula (b), | 05-12-2016 |
20160136583 | METHOD OF MANUFACTURING PARTIALLY FREESTANDING TWO-DIMENSIONAL CRYSTAL FILM AND DEVICE COMPRISING SUCH A FILM - Disclosed is a method of manufacturing a partially freestanding two-dimensional crystal film ( | 05-19-2016 |
20160158707 | NOVEL MEMBRANES - Membrane comprising a carrier and a rejection layer, wherein said membrane is a multiple channel membrane. The rejection layer is a polyamide layer. Process for making multiple channel membranes coated with a polyamide layer. | 06-09-2016 |
20160158709 | COMPOSITE INCLUDING PTFE MEMBRANE - Composites including porous PTFE membranes comprising an intermediate PTFE membrane having a pore rating of from about 2 nanometers to about 20 nanometers, interposed between, and bound to, porous fluoropolymer membranes having larger pore ratings, and methods of making and using the composites, are disclosed. | 06-09-2016 |