Multilayer composite hollow fibers and method of making same

Details Multilayer composite hollow fibers and method of making same Multilayer composite hollow fibers and method of making same

1986-06-26

1987-12-15

Lesmes, George F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428376, 428397, 428398, 21050023, 21050027, 21050029, 21050035, 21050037, 21050041, 21050042, 210490, 55 16, 55158, D02G 300

Patent

active

047132922

ABSTRACT:
Disclosed are a multilayer composite hollow fiber comprising at least one nonporous separating membrane layer (A) performing a separating function and two or more porous layers (B) performing a reinforcing function, the layer (A) and the layers (B) being alternately laminated so as to give a structure having internal and external surfaces formed by the porous layers (B), as well as a method of making such a hollow fiber.
In this multilayer composite hollow fiber, the separating membrane can be formed as an ultrathin, homogeneous membrane. Moreover, the separating membrane is not liable to get damaged owing to the unique structure of the hollow fiber. Furthermore, such hollow fibers can be readily and stably produced on an industrial scale.

REFERENCES:
patent: 4214020 (1980-07-01), Ward et al.
patent: 4230463 (1980-10-01), Henis et al.
patent: 4243701 (1981-01-01), Riley et al.
patent: 4267047 (1981-05-01), Henne et al.
patent: 4317729 (1982-03-01), Yamashita et al.
patent: 4470831 (1984-09-01), Hirose

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