Methods of making and using improved microporous hollow fibers,

Details Methods of making and using improved microporous hollow fibers, Methods of making and using improved microporous hollow fibers,

1990-10-02

1993-11-02

Bell, Janyce

Coating processes

Interior of hollow article coating

Removing excess coating material

427243, 427244, 427322, 427377, 4274301, B05D 722

Patent

active

052582027

ABSTRACT:
The processes of the invention enable depositable PFSA to be provided over he entire inner surface of hollow fibers. Additionally, the processes of this invention provide a fiber which is coated by a thin coating of PFSA which is approximately 5-40 .mu.m thick. The fiber can advantageously withstand pressure gradients between 20-75 psig throughout its wall before leakage.

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patent: 4211602 (1980-07-01), Brumfield
patent: 4214020 (1980-07-01), Ward et al.
patent: 4469744 (1984-09-01), Grot et al.
patent: 4711793 (1987-12-01), Ostreicher et al.
patent: 4806246 (1989-02-01), Nomura
patent: 4908235 (1990-03-01), Smolders
patent: 5082472 (1992-01-01), Mallouk et al.

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