SEMIPERMEABLE MEMBRANE SUPPORT

• Main Authors: MASUDA TAKAO, OCHIAI TAKAHITO, SHIMIZU YUSUKE
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

To provide a semipermeable membrane support capable of suppressing generation of a pinhole leading to decline of salt rejection, when providing a semipermeable membrane.SOLUTION: There is provided a semipermeable membrane support used by providing a semipermeable membrane. In the semipermeable membrane support, when dropping colored N,N-dimethylformamide onto a surface where the semipermeable membrane of the semipermeable membrane support is provided, a length in the longest direction of a wet mark is 1.3 times or less of a length in the shortest direction.SELECTED DRAWING: None 【課題】本発明の課題は、半透膜を設ける際に、脱塩率の低下に繋がるピンホールの発生を抑えることができる半透膜支持体を提供することにある。【解決手段】半透膜を設けて用いる半透膜支持体において、該半透膜支持体の半透膜を設ける面に、着色したＮ，Ｎ−ジメチルホルムアミドを滴下した際、濡れ跡の最長方向の長さが、最短方向の長さの１．３倍以下であることを特徴とする半透膜支持体。【選択図】なし