Hydrophilized porous film and process for producing the same
AssigneeNitto Denko Corporation
InventorsHiroki Fujioka, Hirotoshi Ishizuka, Takatoshi Sasaki
Life of this patent
Estimating the term…
Abstract
A hydrophilized porous film which can be obtained through hydrophilizing by a simple method without impairing rejection performance and permeation performance and easily retains the properties of a film material, and to provide a process for producing the same. The hydrophilized porous film comprises a hydrophobic polymer and dispersed therein an organized clay which has been organized with a hydrophilic compound, and is obtained by a process including a step of dispersing a clay organized with a hydrophilic compound in a solution of a hydrophobic polymer and a step of subjecting this solution to phase separation to obtain the hydrophilized porous film.
Claims8
A hydrophilic porous film that is completely wetted with water comprising a hydrophobic polymer and dispersed therein an organized clay which has been organized with a hydrophilic compound, wherein the organized clay has an average particle diameter of 0.01–0.5 μm.
A process for producing a hydrophilic porous film that is completely wetted with water comprising a step of dispersing an organized clay with a hydrophilic compound in a solution of a hydrophobic polymer, wherein the organized clay has an average particle diameter of 0.01 to 0.5 μm, and a step of subjecting this solution to phase separation to control the average particle diameter of the organized clay and obtain the hydrophilized porous film.
Dependencies are inferred from the claim text.