D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
18/23
D01F 6/06 (2006.01) A61M 1/18 (2006.01) A61M 1/22 (2006.01) A61M 1/34 (2006.01) B01D 71/26 (2006.01) C08J 9/26 (2006.01)
Patent
CA 1310160
A38BSTRACT OF THE DISCLOSURE A flat-film type porous polypropylene membrane possessing a microreticular structure is disclosed which is characterized by the fact that either or both of the opposite surface region of the porous membrane forms a surface layer possessing an average pore diameter in the range of 0.1 to 5.0µm, a bubble point of not more than 2.0kgf/cm2, a porosity in the range of 60 to 85%, and a water permeability of not less than 100 m1/min.mmHg.m2 and the membrane possesses a wall thickness in the range of 30 to 300 µm. When this flat-film type porous polypropylene membrane is used for blood plasma separtion, it effects the blood plasma separated at a high speed and sparingly entails occlusion of blood cells or hemolysis.
560896
Nagaki Shoichi
Seita Yukio
Macrae & Co.
Terumo Kabushiki Kaisha
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