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7572321 |
Membrane, method of making same and heat exchanger furnished with said membrane
A membrane 12 that exhibits superior condensation resistance regardless of the type of moisture-permeable resin, that has satisfactory adhesion between a porous film and a reinforcing member, and...
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7556677 |
Solvent resistant asymmetric integrally skinned membranes
There is provided an asymmetric integrally skinned membrane comprising a polyimide and another polymer selected from the group consisting of polyvinylpyrrolidone, sulfonated polyetheretherketones...
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7553417 |
Functionalized substrates
Functionalized substrates, methods of making functionalized substrates, and methods of using functionalized substrates are disclosed.
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7462223 |
Method for producing a membrane from a crosslinked polymer blend, and corresponding fuel cell
The present invention relates to a polymer blend membrane comprising a bridged polymer which is produced by a selected process. The membrane of the invention displays a significantly improved...
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7438193 |
Nanoporous membrane and method of fabricating the same
Provided are a nanoporous membrane and a method of fabricating the same. The nanoporous membrane includes a support, and a separation layer including a plurality of nano-sized pores at a density of...
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7229553 |
Method for producing a membrane made of bridged polymer and a fuel cell
Method for producing a membrane made of bridged polymer and a fuel cell. The present invention relates to a membrane comprising a bridged polymer which is produced by a selected process. The...
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7160356 |
Dithiolene functionalized polymer membrane for olefin/paraffin separation
A polymeric composite may be used for forming fluid separation membranes. The membranes may be formed from polyimide, polyamide or poly (pyrrolone-imide) materials. Polyamides may be formed by the...
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7074256 |
Phosphazene membranes for gas separations
A polyphosphazene having a glass transition temperature (“T g ”) of approximately −20° C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the...
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6994788 |
Sulfonated aromatic polymers, membrane containing said polymers and a method for production and use of the same
A sulfonated aromatic polymer comprising the repeating structural unit of the formula I
—O—Ar 1 (SO 3 R) n —C(CF 3 ) 2 —Ar 1 (SO...
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6986844 |
Solvent-resistant microporous polybenzimidazole membranes and modules
Solvent-resistant polybenzimidazole membranes, methods of making them and crosslinking them and composite membranes and hollow fiber membrane modules from them are disclosed.
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6841068 |
Domestic nanofiltration membrane based water purifier without storage tank
A domestic nanofiltration membrane based water purifier without a storage tank. The water purifier according to the present invention uses a nanofiltration membrane filter as a main filtering...
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6746595 |
Ammonium ionophore, an ammonium ion selective matrix, an ammonium ion-selective sensor, and a method for detecting ammonium ions in a fluid sample
An ammonium selective ionophore for use in ion selective electrodes.
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6726840 |
Membranes of (per)fluorinated amorphous polymers
Porous membranes of (per)fluorinated amorphous polymers having a porosity in the range 5-500 nm, preferably 20-100 nm, measured by an atomic force electronic microscope; the membrane pore average...
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6649058 |
Hollow membranes with capillary tubes, fluid treatment modules that use them and methods of manufacturing them
The invention relates to a hollow membrane ( 11 ) comprising two support layers arranged one above the other forming a space between them and a plurality of capillary tubes arranged between the...
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6558546 |
pH dependent membrane diffusion
A pore plugging material, for pH dependent membrane diffusion, in which cyclic olefins having phosphazene-functional moieties provide predictable erosion properties when used to plug pores in...
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6540915 |
Antimicrobial semi-permeable membranes
Cast semi-permeable membranes made from synthetic polymer used in reverse osmosis, ultrafiltration and microfiltration are treated with a non-leaching antimicrobial agent to prevent its bio-fouling...
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6521130 |
Process for producing composite semipermeable membrane
When forming a separating functional layer containing crosslinked polyamide, by carrying this out in the presence of 1) carboxylic acid ester with a total of 8 or more carbons, or 2) carboxylic...
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6508921 |
Lithium ion-selective electrode for clinical applications
A lithium ion-selective membrane that favors the bonding of lithium and depresses sodium interference is invented by a charge balance approach. A lithium ion-selective electrode (Li-ISE) having the...
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6316684 |
Filled superglassy membrane
A membrane and membrane separation process useful in gas, vapor and liquid separations. The membrane comprises a separating layer of a polymer that is characterized by a high glass transition...
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6258271 |
Hollow membranes with capillary tubes
The invention relates to a hollow membrane (11) comprising two support layers arranged one above the other forming a space between them and a plurality of capillary tubes arranged between the...
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6156202 |
Conducting polymer membrane and a process for the preparation of the same membrane
As per the World Health organization (WHO) requirement, the water for drinking purposes should be 100% virus free. This invention reports a polymer impregnated porous substrate membrane and method...
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6083401 |
Separative membrane and method for using this membrane
The present invention concerns a separative membrane, as well as a separation device containing this membrane, and a method for using this device. The membrane of the present invention comprises a...
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6017455 |
Porous membrane
The present invention provides an anisotropically porous membrane which is obtained according to a wet process, which comprises a substantially non-sulfonated aromatic polyether ketone having a...
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5997741 |
Process for preparing a polyether ether ketone membrane
The present invention is directed to a process for manufacturing a polyether ether ketone (PEEK) membrane which may be used for ultrafiltration or microfiltration at high temperatures. In this...
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5859182 |
Fluorine-containing polyquinazolone polymer and separation membrane using the same
A fluorine-containing polyquinazolone polymer having a bisquinazolone unit represented by Formula 1 as the repeating unit is used for a gas separation membrane so that great chemical and heat...
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5847075 |
Polymer and porous structure
A polymer characterised by the presence of ylid linkages in the main polymer chain of formula (A) where the dashed line represents the remainder of a ring system for which the N+ provides a...
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5776324 |
Electrochemical biosensors
An electrochemical biosensor for determining the level of a target chemical in a biological fluid includes an electrochemical system including a enzyme substrate which reacts with the target...
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5651931 |
Method of making a biocompatible filter
A method for making a biocompatible filter whereby a biocompatible powder is sintered to form a disk-shaped filter. The biocompatible powder is first sized to obtain a preselected average particle...
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5565102 |
Process for purifying organic synthesis products
The novel process for working up solutions or suspensions of organic synthesis products having a pH value of <3, preferably <1, is carried out with the aid of an asymmetrical, semipermeable...
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5543465 |
Process for the production of hydrophilic membranes
A process for the production of hydrophilic membranes using at least one hydrophobic polymer and polyvinyl pyrrolidone as a hydrophilic polymer, membrane-forming shaping of the polymers and...
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5534150 |
Selectively-permeable membrane and the use thereof
A selectively-permeable membrane constituted by a composition comprising starch and a synthetic thermoplastic polymer is used for separating liquid aqueous-organic mixtures by pervaporation.
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5487831 |
Recognition and separation of carbon clusters
Carbon clusters, such as C 60 and C 70 fullerenes are separated by means of a recognition selector having the formula: ##STR1## wherein R 1 is ##STR2## wherein R 2 is O, S or NR 12 wherein R...
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5425878 |
Membranes for ion transport and method for obtaining them
The invention relates to membranes for facilitated ion transport in aqueous solutions. The membrane is an adduct of a heteropolysiloxane and a crown-ether, and contains certain ions such as picrate...
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5401410 |
Membrane and process for the production thereof
Membranes composed of sulphonated polyaryl ether sulphones are disclosed in which the repetitive polymer units have the formula ##STR1## in which the aryl radicals are substituted by SO 3 X where...
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5308489 |
Blends of polyether copolycarbonates and high molecular weight film-forming thermoplastics
The invention relates to blends of polyether copolycarbonates and other thermoplastics, to their production and to their use for the production of membranes, more particularly for dialysis.
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5296144 |
Composite membrane of a hydrophilic asymmetric membrane coated with an organosiloxane block copolymer
An organosiloxane block copolymer having the formula depicted (I) depicted below: ##STR1## wherein: m has a value of 8.0-18.0; n has a value of 1.0-5.0; x has a value of about 0.2 to about...
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5290440 |
High performance chiral selector
A high performance chiral selector having the formula: ##STR1## wherein Ar is a monocyclic or ortho-fused polycyclic aromatic moiety having up to 10 ring carbon atoms, either of which may be...
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5279738 |
Permeable membrane excellent in biocompatibility
A permeable membrane excellent in biocompatibility, produced by forming coagulation by melting method in the form of a membrane a terminal-modified polyamide, i.e. a polyether amide comprising...
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5266207 |
Composite nanofiltration membrane
Mechanically strong and thermally/chemically-resistant composite nanofiltration membranes, well adapted for the separation of low molecular weight compounds, comprise a porous inorganic support...
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5259950 |
Composite membrane
A composite membrane excelling in organic solvent resistance, heat resistance and organic vapor resistance is disclosed. The composite membrane of the present invention comprises a porous membrane...
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5238570 |
Asymmetric semipermeable membranes of aromatic polycondensates, processes for their preparation and their use
Asymmetric semipermeable membranes which consist of aromatic polycondensates having recurring units of the formula (--O--Z--O--Y--) n (I) in which Y is the...
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5227101 |
Process of making microporous membranes from poly(etheretherketone)-type polymers and low melting point crystallizable polymers
The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type...
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5209848 |
Xylylene based polyether membranes for gas separation
The invention relates to novel xylylene based polyether gas separation membranes and a method of separating gases using such membranes.
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5209847 |
Ultrathin membrane of polymethacrylate or polycrotonate and device provided with ultrathin membrane
An ultrathin polymeric membrane has a membrane thickness of 10 to 1,000 Å. The membrane is constituted of polycarboxylate and obtained by the spin coating method or by the Langmuir-Blodgett...
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5205968 |
Process for making a microporous membrane from a blend containing a poly(etheretherketone)-type polymer, an amorphous polymer, and a solvent
The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type...
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5200078 |
Microporous membranes from poly(etheretherketone)-type polymers
The invention relates to a microporous membrane prepared from unsulfonated poly(etheretherketone)-type polymers.
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5130017 |
Multi-block polymer comprising a first amide acid prepolymer, chain extended with a compatible second prepolymer, the membrane made therefrom and its use in separations
The present invention is directed to a multi-block polymeric material comprising a first amide acid prepolymer, made by combining (A) a diamine with (B) a dianhydride or its corresponding tetraacid...
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5118424 |
Thin film composite membranes from vinyl and related nomomers
Novel thin film composite membranes are disclosed. They are prepared from vinyl and related monomers by phase transfer catalysis at the interface between one phase containing a polymerizable vinyl...
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5112487 |
Porous membrane and production process thereof
The present invention relates to a porous membrane which has excellent durability and is useful for ultrafiltration. The porous membrane of the present invention has heterogeneous structure, which...
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5093003 |
Halogenated polyurethanes
A new copolymer composition comprising the soft segment of an aliphatic polyester and the hard segment of a highly halogenated polyurethane containing from 3 to 36 halogen atoms is disclosed. The...
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