Agency of Industrial Science and Technology

Terumo Kabushiki Kaisha

Ministry of International Trade & Industry

Okihiko Hirasa

Makoto Onishi

Yukio Seita

Toshio Masuoka

Yoshio Suda

Aizo Yamauchi

Shoei Fujishige

Shoji Ito

Porous hydrophilic polypropylene membrane, method for production

N-(2-methoxyethyl)-N-isopropylacrylamide is a novel compound. The polymer obtained by polymerizing this novel compound is a novel hydrophilic-hydrophobic thermally reversible type macromolecular compound having a transition temperature in the range of 12.degree. C. to 14.degree. C.

N-(2-methoxyethyl)-N-isopropylacrylamide, hydrophilic-hydrophobic

A hydrophilic porous membrane has graft chains of a hydrophilic monomer formed on the surface of a hydrophobic porous membrane so as to impart to the surface perfect hydrophilicity such that the produced membrane, when wetted, exhibits a swelling ratio of not more than 1% and a bubble point in the range of 0.5 to 8 kg/cm.sup.2. The hydrophilic porous membrane is produced by irradiating the hydrophobic porous membrane with plasma, feeding the hydrophilic monomer in a gaseous state, and allowing the hydrophilic monomer to be graft polymerized on the surface of the porous membrane. A plasma separator is obtained by using the aforementioned hydrophilic porous membrane as a plasma separation membrane.

Hydrophilic porous membrane, method for production thereof, and plasma

Growing community of inventors

Tsukuba, Japan

Okihiko Hirasa