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发明授权
US07837042B2 Polysulfone type selectively permeable hollow fiber membrane module and process for manufacturing the same 有权
聚砜型选择性渗透性中空纤维膜组件及其制造方法

Polysulfone type selectively permeable hollow fiber membrane module and process for manufacturing the same
摘要：
The invention relates to a hollow fiber membrane module comprising polysulfone type selectively permeable hollow fiber membranes which contain a polysulfone-based resin and a hydrophilic polymer as main components, wherein (A) the content of the hydrophilic polymer in the uppermost layer of the inner surface of the hollow fiber membrane is at least 1.1 times larger than the content of the hydrophilic polymer in the proximate layer of the inner surface of the membrane, and (B) the content of the hydrophilic polymer in the uppermost layer of the outer surface of the hollow fiber membrane is at least 1.1 times larger than the content of the hydrophilic polymer in the uppermost layer of the inner surface of the membrane. The hollow fiber membrane module is exposed to a radioactive ray, on condition that the oxygen concentration of an ambient atmosphere around the hollow fiber membrane is from 0.001 to 0.1%, and that the moisture content of the hollow fiber membrane to the weight thereof is from 0.2 to 7 mass %.
摘要（中）：

本发明涉及一种包含聚砜型选择性渗透性中空纤维膜的中空纤维膜组件，其包含聚砜基树脂和亲水性聚合物作为主要成分，其中（A）亲水性聚合物在内表面最上层中的含量 的中空纤维膜的至少比膜的内表面的邻近层中的亲水性聚合物的含量大至少1.1倍，（B）亲水性聚合物在外表面的最上层中的含量 中空纤维膜比膜的内表面的最上层中的亲水性聚合物的含量大至少1.1倍。 中空纤维膜组件暴露于放射线，条件是中空纤维膜周围的环境气氛的氧浓度为0.001〜0.1％，中空纤维膜的水分含量为 0.2〜7质量％。

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