Hydrophilic porous membrane, method for production thereof, and

Details Hydrophilic porous membrane, method for production thereof, and Hydrophilic porous membrane, method for production thereof, and

1987-05-06

1989-07-04

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 55, 521 61, 521 74, 521134, 521905, 5253294, 5253297, 4283157, 210490, 21050038, 210927, 522151, 522155, 522156, 522161, C08J 936

Patent

active

048451320

ABSTRACT:
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.

REFERENCES:
patent: 4256782 (1981-03-01), Tazuke et al.
patent: 4331719 (1982-05-01), Ragas et al.
patent: 4353799 (1982-10-01), Leonard
patent: 4407846 (1983-10-01), Machi et al.
patent: 4618533 (1986-10-01), Steuck
patent: 4695592 (1987-09-01), Itoh et al.
Patents Abstracts of Japan, vol. 5, No. 71, May 13, 1981.
Patent Abstracts of Japan, vol. 8, No. 283, Dec. 25, 1984.
Kogyo Zairyo (Industrial Materials), vol. 31, No. 7, pp. 62-99.

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