PRODUCTION METHOD FOR SEMIPERMEABLE MEMBRANE, AND SEMIPERMEABLE MEMBRANE

Provided are: a production method for a semipermeable membrane that exhibits both semipermeability and strength; and a semipermeable membrane. The production method comprises a step in which a liquid membrane is formed from a membrane-forming solution that contains the substances (A)-(C) indicated b...

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Bibliographic Details
Main Authors TOMIOKA, HIROKI, TOKUYAMA, TAKAHIRO
Format Patent
LanguageEnglish
French
Japanese
Published 19.06.2014
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING-UP
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Summary:Provided are: a production method for a semipermeable membrane that exhibits both semipermeability and strength; and a semipermeable membrane. The production method comprises a step in which a liquid membrane is formed from a membrane-forming solution that contains the substances (A)-(C) indicated below and a desolvation step in which a solvent is removed from the liquid membrane. The substance (A) is a polymer provided with a repeating unit structure that includes one or more structural parts selected from the group consisting of an amide group, an imide group, a sulfonyl group, and a heterocylic ring. The substance (B) is a good solvent of the substance (A). The substance (C) is a salt. L'invention concerne : un procédé de production pour une membrane semi-perméable qui présente à la fois une semi-perméabilité et une résistance; et une membrane semi-perméable. Le procédé de production comprend une étape dans laquelle une membrane liquide est formée à partir d'une solution de formation de membrane qui contient les substances (A)-(C) indiquées ci-dessous et une étape de désolvatation dans laquelle un solvant est éliminé de la membrane liquide. La substance (A) est un polymère doté d'une structure d'unité de répétition qui comprend une ou plusieurs parties structurales choisies dans le groupe consistant en un groupe amide, un groupe imide, un groupe sulfonyle et un noyau hétérocyclique. La substance (B) est un bon solvant de la substance (A). La substance (C) est un sel.
Bibliography:Application Number: WO2013JP83557