公开(公告)号：JP2000237557A

公开(公告)日：2000-09-05

申请号：JP36295999

申请日：1999-12-21

Applicant: TORAY INDUSTRIES

Inventor： KAMISAKA TSUTOMU ,  SUGAYA HIROYUKI ,  NAKAJIMA HIDEKAZU

IPC: A61M1/16 ,  B01D69/02 ,  B01D71/12 ,  B01D71/42 ,  B01D71/56 ,  B01D71/68

Abstract: PROBLEM TO BE SOLVED: To obtain a membrane provided with hydrophilic property, free from the elution of a water-soluble polymer and excellent in contamination resistance such as resistance to the sticking of blood platelets by dipping a membrane in a polyalkylene glycol solution in a specified temperature range or bringing the membrane into contact with the solution and irradiating the membrane. SOLUTION: A membrane is dipped in or brought into contact with a polyalkylene glycol solution and then irradiated with radiation such as γ-rays or electron beams. Since unevenness in adsorption is liable to occur when the temperature of the solution is high, the solution is cooled to 0-18 deg.C, preferably 4-10 deg.C to lower the adsorbability of the polyalkylene glycol to the membrane. This method is particularly applicable to the membrane using a polymethacrylate resin, polysulfone resin, polyacrylonitrile, polyamide or cellulosic resin. The amount of the polyalkylene glycol eluted from the membrane can be reduced by setting the concentration of dissolved oxygen in the solution at

公开(公告)号：JP2000126286A

公开(公告)日：2000-05-09

申请号：JP29944098

申请日：1998-10-21

Applicant: TORAY INDUSTRIES

Inventor： SUGAYA HIROYUKI ,  KAMISAKA TSUTOMU ,  ICHIKAWA KATSUYOSHI

IPC: A61M1/18 ,  B01D63/02

Abstract: PROBLEM TO BE SOLVED: To lessen the remaining of blood by confining the ruggedness degree per specific length of hollow fibers to specific μm or below. SOLUTION: The ruggedness degree per 0.1 mm of the hollow fibers constituting the hollow fiber membranes 5 is set at