发明名称 SEMIPERMEABLE COMPOSITE MEMBRANE HAVING STABLE SELECTIVE SEPARATION CAPACITY
摘要 PURPOSE:To obtain a reverse osmotic membrane excellent in durability, strength, and solvent resistance by superposing a barrier film layer of a crosslinked polymer polymerized by an acid catalyst and a protective film layer of a composite membrane consisting of a partially saponified product on a porous substrate. CONSTITUTION:On the surface of the anisotropic porous substrate of polysulfone, polyvinyl chloride, etc., a thickness of approx. 0.01-0.1mu of the barrier film layer of a bridged polymer composed primarily of a compound with an acid-polymerizable isocyanurate main chain and/or furfuryl alcohol is formed, and then on the barrier film layer, a protective layer with an optical interference stripe, having high water insolubility and high solvent resistance, composed of the partially saponified products of polyvinyl alcohol and/or polyvinyl acetate is formed. The semipermeable composite membrane thus obtained has high resistance to mechanical damage, highly stable separation capacity for a long period of time, and high solvent resistance.
申请公布号 JPS5615804(A) 申请公布日期 1981.02.16
申请号 JP19790091498 申请日期 1979.07.20
申请人 TORAY INDUSTRIES 发明人 WATANABE TETSUO;HARUMIYA NORIHO;KURIHARA MASARU
分类号 C07C53/08;B01D71/38;B01D71/62;B01D71/76;C07B63/00;C07C51/00;C07C67/00 主分类号 C07C53/08
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