Permeable membrane

Abstract

Abstract PURPOSE:To provide an ultrafiltration membrane excellent in a filtering efficiency obtained by adhering silicone particles to one surface or both surfaces of a fine- structure membrane comprising a polyvinyl alcohol polymer. CONSTITUTION:To one surface or both surfaces of a membrane constituted by a hollow yarn which comprises intramolecularly or intermoleculary acetalized polyvinyl alcohol as a base material and has a fine structure with an average pore size of 0.1-2mu, an outer diameter of 500-3,000mu and an inner diameter of 200-2,000mu, 0.01-8wt% of the base material of silicone particles are adhered to prepare a permeable membrane. This membrane is excellent as an ultrafiltration membrane used in a treatment of a body fluid such as blood, serum or a body cavity fluid such as ascites or pleural effusion.

Inventors

• 👤 Yoshito Hamamoto
• 👤 浜本　義人
• 👤 Osamu Kusudo
• 👤 楠戸　修
• 👤 Shiro Osada
• 👤 長田　司郎

Bibliographic Details