Hydrophilizing agent for hydrophobic porous membrane, and...

Details Hydrophilizing agent for hydrophobic porous membrane, and... Hydrophilizing agent for hydrophobic porous membrane, and...

2011-02-08

2011-02-08

Menon, Krishnan S (Department: 1797)

Liquid purification or separation

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Material

C427S246000, C210S500360, C210S502100, C210S500270

Reexamination Certificate

active

07882962

ABSTRACT:
A hydrophilizing agent for a hydrophobic porous membrane, wherein the agent contains a surfactant, and the surfactant has a frothability such that the bubble height immediately after frothing, as measured according to the Ross-Miles method (JIS K 3362), using a 0.1 wt % aqueous solution of the surfactant at 25° C., is 40 mm or less, and preferably has a frothability such that the bubble height five minutes after frothing is 20 mm or less; a method for hydrophilizing a hydrophobic porous membrane using this hydrophilizing agent; and a method for testing and hydrophilizing a membrane module using this hydrophilizing agent.

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