Porous polypropylene membrane and method for production thereof

Details Porous polypropylene membrane and method for production thereof Porous polypropylene membrane and method for production thereof

1992-01-14

1994-10-11

Spear, Frank

Liquid purification or separation

Filter

Material

21050036, 422 48, B01D 6908

Patent

active

053544706

ABSTRACT:
A porous polypropylene hollow fiber membrane constructed and arranged for artificial lung use and an artificial lung. The membrane includes a solid phase in an inner surface region thereof formed with particles of polypropylene closely fused and joined to give rise to a continuous phase while partially exposed through the surface thereof, a solid phase in an interior and an outer surface region thereof formed with particles of polypropylene interconnected in the direction of axis of the fiber to give rise to a multiplicity of lumps of polyproplylene and an interstice between the phases having continuous pores interconnected in the form of a three-dimensional network.

REFERENCES:
patent: 4405688 (1983-09-01), Lowery et al.
patent: 4594207 (1986-06-01), Josefiak et al.
patent: 4708800 (1987-11-01), Ichikawa et al.
patent: 4770852 (1988-09-01), Takahara et al.
patent: 4900444 (1990-02-01), Seita et al.
patent: 4964991 (1990-10-01), Seita et al.

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