COMPOSITE REVERSE OSMOSIS MEMBRANE AND METHOD FOR PRODUCING THE SAME

To provide a composite reverse osmosis membrane which has improved water permeability and antifouling performance, and a method for producing the same.SOLUTION: A composite reverse osmosis membrane has a skin layer containing a polyamide resin formed on the surface of a porous support, wherein the p...

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Main Authors LI SHAOLU, MIYABE RINJI, KAWASHIMA TOSHIYUKI, HU YUNXIA, GUAN YAXU, QIN YIWEN, GONG GENGHAO, NOMI SHUNSUKE, WANG JUNTAO
Format Patent
LanguageEnglish
Japanese
Published 26.06.2023
Subjects
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:To provide a composite reverse osmosis membrane which has improved water permeability and antifouling performance, and a method for producing the same.SOLUTION: A composite reverse osmosis membrane has a skin layer containing a polyamide resin formed on the surface of a porous support, wherein the polyamide resin is a modified polyamide resin modified with an alkylene diamine derivative.SELECTED DRAWING: Figure 4 【課題】本発明は、透水性及び防汚性能を向上させた複合逆浸透膜及びその製造方法を提供することを目的とする。【解決手段】本発明の複合逆浸透膜は、ポリアミド樹脂を含むスキン層が多孔性支持体の表面に形成されているものであり、前記ポリアミド樹脂は、アルキレンジアミン誘導体によって変性された変性ポリアミド樹脂である。【選択図】図４
Bibliography:Application Number: JP20220170501