| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 096014000 | Membrane having ring containing organic compound | 13 |
| 20090217819 | GAS SEPARATION MEMBRANES COMPRISING PERMEABILITY ENHANCING ADDITIVES - The present invention relates to polymer compositions comprising a (co)polymer comprising (a) an arylene oxide moiety and (b) a dendritic (co)polymer, a hyperbranched (co)polymer or a mixture thereof, and the use of these polymer compositions as membrane materials for the separation of gases. The present invention further relates to the use of a dendritic (co)polymer, a hyperbranched (co)polymer or a mixture thereof as permeability and/or selectivity enhancing additives in gas separation membranes. The dendritic (co)polymer is preferably a Boltorn polymer. | 09-03-2009 |
| 20140144324 | Gas Separation Membrane - A gas separation membrane having a polyimide structure. The polyimide structure is provided to contain a repeating unit represented by general formula (1): | 05-29-2014 |
| 20140144325 | Gas Separation Membrane - A gas separation membrane having a polyimide structure. The polyimide structure is provided to contain a repeating unit represented by general formula (1): | 05-29-2014 |
| 20140174293 | Gas Separation Membrane - [Problem] Diamine and carboxylic dianhydride for polymerizing a hexafluoroisopropylidene group-containing polyimide are limited in chemical structure when developed into a polyimide membrane, so that it is difficult to design a chemical structure with consideration paid to the strength and separation performance of a gas separation membrane. A gas separation membrane easily soluble in an organic solvent, excellent in formability so as to be readily usable for a gas separation membrane, and excellent in gas separation performance is obtained. | 06-26-2014 |
| 20140208949 | GAS SEPARATION MEMBRANE, METHOD OF PRODUCING THE SAME, AND GAS SEPARATING MEMBRANE MODULE USING THE SAME - A gas separation membrane, containing: a support; and a separating layer formed on the support, the separating layer containing a resin; the separating layer containing, at the side thereof opposite to the support, a hydrophilic modification treatment surface, the hydrophilic modification treatment surface involved in a layer having a film thickness of 0.1 μm or less, and the hydrophilic modification treatment surface provided with a surface contact angle measured by using water thereon in the range of 60 degrees or less. | 07-31-2014 |
| 20140230654 | GAS SEPARATION MEMBRANE - The present invention relates to a gas separation membrane comprising as a main component a polyacetal, wherein the polyacetal contains 1.5 to 10 mol of an oxyalkylene unit based on 100 mol of an oxymethylene unit. The gas separation membrane of the present invention has high carbon dioxide gas separating ability and high permeability rate to carbon dioxide gas and is advantageously used as a separation membrane for carbon dioxide gas contained in exhaust gas. | 08-21-2014 |
| 20150033945 | GAS-SEPARATION MEMBRANE - A novel gas separation membrane having excellent gas permeability and gas separation performance, particularly carbon dioxide (CO | 02-05-2015 |
| 20150059579 | GAS SEPARATION MEMBRANE FOR CARBON DIOXIDE AND PREPARATION METHOD THEREOF - The present disclosure relates to a gas separation membrane for filtration of carbon dioxide and a preparation method thereof. The gas separation membrane for filtration of carbon dioxide according to the present disclosure exhibits superior performance in rejecting carbon dioxide selectively from mixture gas. It is a separation membrane system leaving carbon dioxide and passing nitrogen, unlike the conventional systems which leave nitrogen and pass carbon dioxide. In addition, since compressed, highly-concentrated carbon dioxide can be obtained, the consumption of energy required for carbon dioxide storage following separation can be reduced. Furthermore, the separation membrane of the present disclosure, which is environment-friendly and consumes less energy, allows highly efficient separation and is easily applicable to the separation of carbon dioxide not only from the mixture of carbon dioxide with nitrogen but also from other mixtures of carbon dioxide with, for example, CO | 03-05-2015 |
| 20150290592 | POLYMERIC MOLECULAR SIEVE MEMBRANES FOR GAS SEPARATION - A porous polymer membrane useful in gas separation, the porous polymer membrane comprising a polymeric structure having crosslinked aromatic groups and a hierarchical porosity in which micropores having a pore size less than 2 nm are present at least in an outer layer of the porous polymer membrane, and macropores having a pore size of over 50 nm are present at least in an inner layer of the porous polymer membrane. Also described are methods for producing the porous polymer membrane in which a non-porous polymer membrane containing aromatic rings is subjected to a Friedel-Crafts crosslinking reaction in which a crosslinking molecule crosslinks the aromatic rings in the presence of a Friedel-Crafts catalyst and organic solvent under sufficiently elevated temperature, as well as methods for using the porous polymer membranes for gas or liquid separation, filtration, or purification. | 10-15-2015 |
| 20160089634 | POLYIMIDE BLEND MEMBRANES FOR GAS SEPARATIONS - The polyimide blend membrane in the present invention was prepared by blending a first aromatic polyimide with high permeability and a second aromatic polyimide with high selectivity for gas separation. The polyimide blend membrane in the present invention showed improved permeability compared to membranes made from the second aromatic polyimide and improved selectivity compared to membranes made from the first aromatic polyimide. | 03-31-2016 |
| 20160089639 | HIGH PERMEABILITY POLYIMIDE MEMBRANES: GAS SELECTIVITY ENHANCEMENT THROUGH UV TREATMENT - Polyimide membranes are provided that provide extremely high permeability. The polyimides do not contain carbonyl or sulfonyl functional groups. These membranes are useful in separating gases including the separation of gas pairs including carbon dioxide/methane, hydrogen/methane and propylene/propane as well as other gas mixtures. The membrane selectivity can be adjusted by exposure to ultraviolet light. | 03-31-2016 |
| 20160089640 | ASYMMETRIC INTEGRALLY-SKINNED FLAT SHEET MEMBRANES FOR H2 PURIFICATION AND NATURAL GAS UPGRADING - An asymmetric integrally-skinned flat sheet membrane comprising a miscible blend of an aromatic polyethersulfone (PES) polymer and an aromatic polyimide polymer is used for gas separations such as hydrogen purification, separation of hydrogen and methane and to separate other gases and liquids. UV radiation may be applied to the surface of the membrane for improved properties. | 03-31-2016 |
| 20160159712 | 1, 3-BUTADIENE SEPARATING MATERIAL, AND SEPARATION METHOD USING SAID SEPARATING MATERIAL - A separating material superior to conventional separating materials, and a separation method are provided, with which 1,3-butadiene is selectively separated and recovered from a mixed gas including 1,3-butadiene and C4 hydrocarbons other than 1,3-butadiene. A metal complex, which comprises a dicarboxylic acid compound (I) (see (I) below) represented by general formula (I), an ion of a metal such as beryllium, and a bipyridyl compound (II) represented by general formula (II), namely L-Z-L (II) (see (L) below), is characterized by including, as the dicarboxylic acid compound (I), at least two different dicarboxylic acid compounds (I). The metal complex is used as a 1,3-butadiene separating material. Formula (I) L is represented by any of the compounds below. Formula (L) | 06-09-2016 |
