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8182590 |
Ultrathin porous nanoscale membranes, methods of making, and uses thereof
A process for forming a porous nanoscale membrane is described. The process involves applying a nanoscale film to one side of a substrate, where the nanoscale film includes a semiconductor...
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8167983 |
Gas separation membranes
The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and...
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8133306 |
Gas diffusion substrate
A gas diffusion substrate includes a non-woven network of carbon fibres, the carbon fibres are graphitised but the non-woven network has not been subjected to a graphitisation process. A mixture of...
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8127937 |
High performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes
In the present invention high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes and methods for making and using these membranes have been developed. The cross-linked...
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8110026 |
Functional graphene-polymer nanocomposites for gas barrier applications
A gas diffusion barrier contains a polymer matrix and a functional graphene which displays no signature of graphite and/or graphite oxide, as determined by X-ray diffraction.
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8101009 |
Separation membrane by controlled annealing of polyimide polymers
This abstract discusses membranes needed to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the...
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8083834 |
High permeability membrane operated at elevated temperature for upgrading natural gas
The present invention discloses a new process of treating natural gas using high gas permeability polybenzoxazole polymer membranes operated at high temperatures that can provide sufficient dew...
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8075669 |
Composite material
There is described a composite material such as venting materials and vents containing said venting materials. The vents are air- or more generally gas-permeable venting composites that are...
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8066799 |
Method of making a crosslinked fiber membrane from a high molecular weight, monoesterified polyimide polymer
The present disclosure relates to a high molecular weight, monoesterified polyimide polymer. Such high molecular weight, monoesterified polyimide polymers are useful in forming crosslinked polymer...
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8056731 |
Membrane structure and method of making
A membrane structure is provided. The membrane structure includes a polymer layer having a plurality of pores; and a ceramic layer disposed on the polymer layer. The ceramic layer has a plurality...
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8057574 |
Membrane post treatment
The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a...
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7964019 |
Gas separation membrane
A membrane for gas separation includes a porous support layer and a separation layer. The separation layer comprises a mixture of one or more saccharide derivatives and one or more homopolymers....
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7938894 |
Hybrid organic-inorganic gas separation membranes
The invention discloses a composition comprising a hybrid composite organic-inorganic membrane. The hybrid organic-inorganic membrane according to the present invention may comprise an amorphous...
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7922795 |
Ultrathin nanoscale membranes, methods of making, and uses thereof
A nanoscale membrane exposed on opposite sides thereof and having an average thickness of less than about 100 nm, and a lateral length to thickness aspect ratio that is more than 10,000 to 1 is...
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7871456 |
Membranes with controlled permeability to polar and apolar molecules in solution and methods of making same
A membrane for use in an implantable glucose sensor including at least one crosslinked substantially hydrophobic polymer and at least one crosslinked substantially hydrophilic polymer; wherein the...
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7867324 |
Fuel system and method of reducing emission
A fuel system includes a fuel deoxygenator for removing oxygen from a liquid fuel. A vaporizer is in fluid communication with the fuel deoxygenator. The vaporizer vaporizes at least a portion of...
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7846238 |
Method of manufacturing porous polytetrafluoroethylene membrane, filter medium, and filter unit
Provided is a method of manufacturing a porous polytetrafluoroethylene (PTFE) membrane capable of achieving both a high collection efficiency and a low pressure drop, though it has a larger average...
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7837763 |
High-molecular-weight polyazoles used as proton conducting membranes
The invention under consideration concerns novel his-molecular-weight polyazoles, which are suitable for the production of fibers, films, membranes, and molded articles, on the basis of their high...
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7833313 |
Method for manufacturing polyimide asymmetric membrane, and polyimide asymmetric membrane
A process of producing an asymmetric membrane of multicomponent polyimide. The process includes the steps of (1) preparing a multicomponent polyimide blend solution by mixing a polyimide component...
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7815712 |
Method of making high performance mixed matrix membranes using suspensions containing polymers and polymer stabilized molecular sieves
The present invention discloses a novel method of making high performance mixed matrix membranes (MMMs) using stabilized concentrated suspensions of solvents, uniformly dispersed polymer stabilized...
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7811359 |
Composite membrane for separation of carbon dioxide
A membrane and method for separating carbon dioxide from a mixture of gases, where the membrane includes expanded polytetrafluoroethylene and polysiloxane. The membrane is highly stable and can...
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7785397 |
Highly microporous thermoplastic/bismaleimide semi-interpenetrating polymer network
In order to synthesize semi-interpenetrating polymer networks (semi-IPNs) with molecular sieve characteristics, polyetherimide/bismaleimide (PEI/BMI) chromophore composites were made through...
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7771518 |
Asymmetric hollow fiber gas separation membrane and gas separation method
An asymmetric hollow-fiber gas separation membrane is made of a soluble aromatic polyimide that is composed of a specific repeating unit. The tetracarboxylic acid component of the unit has a...
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7771521 |
Hyperbranched polyimide-based hybrid material
It is an object of the present invention to provide a polyimide-based hybrid material which is industrially and advantageously utilized because of having better gas permeability, electric...
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7758679 |
Treating unit for treating a loaded solvent stream having a time varying concentration of contaminant
A treating unit that comprises an absorber unit for contacting a regenerated solvent with a gas stream loaded with contaminants to yield a treated gas stream and a loaded solvent stream; a...
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7717271 |
Membrane structure and method of making
A membrane structure is provided. The membrane structure includes a first layer having a plurality of interconnected pores; and a second layer disposed on the first layer. The second layer has a...
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7708810 |
Carbon nanocomposite membranes and methods for their fabrication
A gas permeable, carbon based, nanocomposite membrane comprises a nanoporous carbon matrix comprising a pyrolyzed polymer, and a plurality of nanoparticles of carbon or an inorganic compound...
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7699911 |
Ozone resistant O2/N2 separation membranes
Ozone resistant O2/N2 gas separation membranes comprise a polymer membrane and an ozone reacting component, such as an antioxidant. The antioxidant may be included in the support layer of a...
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7662212 |
Membrane post treatment
The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a...
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7658784 |
Composite material, in particular composite membrane, and process for the production of the same
Composite materials are provided. A representative material is configured as a composite membrane for gas separation, vapor separation, or pervaporation. The composite membrane comprises at least a...
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7637983 |
Metal organic frameworkâpolymer mixed matrix membranes
Metal-organic framework (MOF)-polymer mixed matrix membranes (MOF-MMMs) have been prepared by dispersing high surface area MOFs (e.g. IRMOF-1) into a polymer matrix (e.g. Matrimid 5218). The MOFs...
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7628841 |
Method for manufacturing polyimide asymmetric membrane, and polyimide asymmetric membrane
A process of producing an asymmetric membrane of multicomponent polyimide. The process includes the steps of (1) preparing a multicomponent polyimide blend solution by mixing a polyimide component...
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7615104 |
Fuel deoxygenation system with multi-layer oxygen permeable membrane
A fuel system for an energy conversion device includes a deoxygenator system with an oxygen permeable membrane formed from a multiple of layers. The layers include a sealant layer, an oxygen...
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7591878 |
Membrane gas separation
The invention relates to gas separation, in particular to separation of CO2 from CO2-rich liquids, particularly from CO2 absorption liquids used in the removal of CO2 from off-gases or product...
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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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7537646 |
Fuel system and method of reducing emission
A fuel system includes a fuel deoxygenator for removing oxygen from a liquid fuel. A vaporizer is in fluid communication with the fuel deoxygenator. The vaporizer vaporizes at least a portion of...
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7510595 |
Metal oxide nanoparticle filled polymers
The present invention includes a method, composition and apparatus for forming a nanoparticle filled polymer having similar gas selectivity and greater gas permeability than the native polymer. The...
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7497896 |
Method of treating a gas mixture comprising propane and propylene
Methods for treating a gas mixture of at least propylene and propane, in order to separate the propylene from the propane. The gas mixture is brought into contact with a membrane enables the...
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7491262 |
Silver nanoparticle/polymer nanocomposite membranes for olefin/paraffin separation and method of preparing the same
There is provided a nanocomposite membrane comprising an Ag-nanoparticle/polymer nanocomposite, in which the Ag-particles are uniformly dispersed in the polymer matrix, and a support membrane for...
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7485173 |
Cross-linkable and cross-linked mixed matrix membranes and methods of making the same
The present invention is for novel high performance cross-linkable and cross-linked mixed matrix membranes and the use of such membranes for separations such as for CO2/CH4, H2/CH4 and...
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7455706 |
Filter system for electronic equipment enclosure
A filter system including a method for self cleaning the filter system of an electronic equipment enclosure where air flow is monitored either by monitoring fan performance of air flow velocity...
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7422623 |
Separation membrane by controlled annealing of polyimide polymers
This abstract discusses membranes needed to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the...
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7393391 |
Fabrication of an anisotropic super hydrophobic/hydrophilic nanoporous membranes
Anisotropic hydrophobic/hydrophilic nanoporous membranes and methods of forming anisotropic hydrophobic/hydrophilic nanoporous membranes are disclosed. The method of forming the nanoporous membrane...
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7393383 |
Separation membrane made from blends of polyimide with polyamide or polyimide-amide polymers
Membranes are used to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from...
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7393388 |
Spiral wound fuel stabilization unit for fuel de-oxygenation
A deoxygenator includes a plurality of permeable membranes spirally wound about an exhaust tube for removing dissolved oxygen from a hydrocarbon fuel. The permeable membrane is spirally wrapped...
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7344578 |
Breather valve device for the container for an electronic control unit
A breather valve device for a container for an electronic control unit, includes a support structure including, a substantially planar wall having first and second surfaces intended to face...
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7303609 |
Manufacture of polyimide-hollow fibres
A process for the manufacture of a polyimide hollow fibre comprising: (i) providing a dope solution comprising one or more polyimides dissolved in a solvent comprising 60-100 wt %...
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7291204 |
Separation membrane module with hollow fiber and a method of making the same
A separation membrane module having hollow fibers, wherein a plurality of hollow fibers are heated and melted to bond and thermally fuse the external surfaces of the hollow fibers with each other;...
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7264650 |
Ultrahigh-selectivity oxygen enrichment filled elastomeric silicone polymer membrane incorporating nanofillers
A semipermeable separation element includes (a) a porous substrate, and (b) a film formed on the microporous substrate; the film comprising a silicone elastomer and a nanoparticle filler. The film...
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