Process for hydrophilizing a porous material made of fluorine resin
AssigneesKurashiki Boseki Kabushiki Kaisha, Japan Atomic Energy, Radiation Application Development Reserch Institute
InventorsMasanobu Nishii, Shunichi Kawanishi, Shunichi Sugimoto, Tadaharu Tanaka, Mitsuru Sano
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Abstract
The present invention relates to a process for hydrophilizing a porous material made of a fluorine resin comprising irradiating an ultraviolet laser beam on the porous material impregnated with an aqueous solution of hydrogen peroxide or water-soluble organic solvent. According to the process, the chemically and physically inactive surfaces including the inside of the micropores of the porous materials made of fluorine resins can be sufficiently hydrophilized without deteriorating the excellent heat resistance, chemical resistance and the like of the fluorine resins.
Claims18
A process for hydrophilizing a porous material made of a fluorine resin comprising
- (i) impregnating the porous material with ethanol,
- (ii) impregnating the porous material with an aqueous solution of hydrogen peroxide or an aqueous solution of water-soluble organic liquid selected from the group consisting of 1,4-dioxane, ethylene glycol monomethyl ether, acetylacetone, methyl ethyl ketone, dimethylamine, and mixtures thereof, thereby substituting the ethanol impregnated in the process material with the aqueous solution, and
- (iii) irradiating an ultraviolet laser beam on the impregnated porous material.
Dependencies are inferred from the claim text.