Process of turning surface of hydrophobic microporous filter membrane hydrophilic

Abstract

Abstract PURPOSE:To turn the microporous filter membrane made of hydrophobic polymer hydrophilic, biologically safe, without degrading efficiency of the said membrane by cross-linking the non-soluble, hydrophilic polymer onto the hydrophobic filter membrane after impregnation. CONSTITUTION:A non-soluble hydrophilic polymer, swelling, non-soluble and easily transmittable in the water, is used. Such vinyl polymers as cellulose ester, cellulose ether, saponification acetate vinyl, acrylic acid polymer and the like are suitable to be used. This non-soluble, hydrophilic polymer together with cross linking-agent is solved into solvent, impregnated and applied onto the hydrophobic, microporous filter membrane, and then cross-linked or impregnated and applied, together with cross-linking agent being impregnated and applied separately, and then cross linked to make hydrophilic polymer non- soluble.

Inventors

• 👤 Sumio Otani
• 👤 純生 大谷
• 👤 Kyoichi Naruo
• 👤 成尾　匡一
• 👤 Jun Sasaki
• 👤 純 佐々木

Bibliographic Details