Composite semipermeable membrane and process for production thereof

    公开(公告)号:AU2011219151A1

    公开(公告)日:2012-08-30

    申请号:AU2011219151

    申请日:2011-02-17

    Abstract: Disclosed is: a composite semipermeable membrane comprising a polyamide separation functional layer arranged on a microporous support film, wherein the polyamide separation functional layer has a degree of yellow ting of 10 to 40 inclusive and the actual length of the polyamide separation functional layer per 1 μm of the microporous support film is 2 to 5 μm inclusive; or a composite semipermeable membrane comprising a polyamide separation functional layer arranged on a microporous support film and produced by the polycondensation of a polyfunctional amine with a polyfunctional acid halide, wherein the polyamide separation functional layer is produced through the steps of (A) an interfacial polycondensation step of bringing the polyfunctional amine into contact with the polyfunctional acid halide at 40 to 70˚C and (B) a step of a heating treatment at 70 to 150˚C. The composite semipermeable membrane has high boron removal performance and high water permeability.

    COMPOSITE SEMIPERMEABLE MEMBRANE AND PROCESS FOR PRODUCTION THEREOF

    公开(公告)号:SG183398A1

    公开(公告)日:2012-09-27

    申请号:SG2012061404

    申请日:2011-02-17

    Abstract: Provided is a composite semipermeable membrane having a polyamide separation-functional layer on a porous support layer, wherein the polyamide separation-functional layer has a yellow index of 10 to 40, and the actual length of the polyamide separation-functional layer per 1 µm-length of the porous support layer is from 2 1,tm to 5 um, or a composite semipermeable membrane having on a porous support layer a polyamide separation-functional layer prepared by polycondensat on of polyfunctional amines with polyfunctional acid halides, wherein the polyamide separation-functional layer is formed by the steps of (A) interfacial polycondensation in which polyfunctional amines and polyfunctional acid halides are brought into contact at 40°C to 70°C and subsequent (B) heat treatment at 70°C to 150°C. The composite semipermeable membrane according to the presentinvention has high boron removal performance and high water permeation performance.

    SEMIPERMEABLE MEMBRANE AND MANUFACTURING METHOD THEREFOR

    公开(公告)号:SG181591A1

    公开(公告)日:2012-07-30

    申请号:SG2012042354

    申请日:2010-12-20

    Abstract: Semipermeable Membrane and Manufacturing Method thereforProvided is a semipermeable membrane having at least a separating 5 functional layer, wherein azo compounds are retained in the separating functional layer, and the separating functional layer has a yellow index of 10 to 40. Also provided is a method of producing the semipermeable membrane. The presentinvention provides a semipermeable membrane having not only high water permeability but also high rejection performance even for substances that are 10 nondissociative in the neutral range, such as boric acid, and showing high durability and a manufacturing method therefor.(No suitable figure)

    複合半透膜
    7.
    发明专利
    複合半透膜 审中-公开

    公开(公告)号:JP2019147133A

    公开(公告)日:2019-09-05

    申请号:JP2018034862

    申请日:2018-02-28

    Abstract: 【課題】支持層の材料としてABS樹脂を用いた複合半透膜において、高い透水性を有する複合半透膜を提供する。【解決手段】本発明の複合半透膜は、基材と、前記基材上に配置された支持層と、前記支持層上に配置された分離機能層とを備える複合半透膜であって、前記支持層が熱可塑性樹脂を主成分としており、前記熱可塑性樹脂の重量平均分子量Mwが1.4×105以上にあることを特徴とする複合半透膜。【選択図】なし

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