Hollow fiber membrane and method for manufacture thereof

Details Hollow fiber membrane and method for manufacture thereof Hollow fiber membrane and method for manufacture thereof

1985-10-01

1987-11-24

Kendell, Lorraine T.

Liquid purification or separation

Filter

Material

21050036, 428372, 428376, 428398, B01D 47100, B01D 5910, D02G 300

Patent

active

047088001

ABSTRACT:
A porous hollow fiber membrane, comprising a polyolefin hollow fiber membrane of an annular cross section of substantial circle 150 to 300 .mu.m in inside diameter and 10 to 150 .mu.m in wall thickness, said hollow fiber membrane forming on the inner wall side thereof a tight layer of intimately bound fine polyolefin particles and on the outer wall side thereof a porous texture of fine polyolefin particles bound in chains and containing fine pores extended continuously form said inner wall side to said outer wall side.

REFERENCES:
patent: 3954927 (1976-05-01), Duling et al.
patent: 4020230 (1977-04-01), Mahoney et al.
patent: 4100238 (1978-07-01), Shinomura
patent: 4405688 (1983-09-01), Lowery et al.
patent: 4587163 (1986-05-01), Zachariades

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