POROUS POLYMER MEMBRANE
PROBLEM TO BE SOLVED: To provide a porous polymer membrane excellent in water permeability and hydrophilicity.SOLUTION: A porous polymer membrane comprises: a copolymer (A) having a vinyl alcohol unit and a tetrafluoroethylene unit, wherein an alternation rate of the vinyl alcohol unit and the tetra...
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| creator | TANAKA YOSHITO SHIOYA YUKO ITO KENGO MIKI ATSUSHI |
| description | PROBLEM TO BE SOLVED: To provide a porous polymer membrane excellent in water permeability and hydrophilicity.SOLUTION: A porous polymer membrane comprises: a copolymer (A) having a vinyl alcohol unit and a tetrafluoroethylene unit, wherein an alternation rate of the vinyl alcohol unit and the tetrafluoroethylene unit is 30% or more, and a molar ratio (vinyl alcohol unit/tetrafluoroethylene unit) of the vinyl alcohol unit and the tetrafluoroethylene unit is 25-75/75-25; and a vinylidene fluoride-based resin. The porous polymer membrane is produced by a non-solvent induced phase separation method, a thermally induced phase separation method or combination of these methods and, preferably, is a hollow fiber membrane. |
| format | Patent |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRICITY GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP |
| title | POROUS POLYMER MEMBRANE |
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