Process for the production of microporous polybenzimidazole arti

Details Process for the production of microporous polybenzimidazole arti Process for the production of microporous polybenzimidazole arti

1987-08-20

1989-05-09

Foelak, Morton

Liquid purification or separation

Filter

Material

521 64, 521180, 521184, 521185, 521189, 264 41, C08J 928

Patent

active

048286990

ABSTRACT:
Disclosed herein are microporous polybenzimidazole articles prepared by the addition of a leachable additive to a polybenzimidazole polymer solution or dope and the subsequent leaching of the additive from the polybenzimidazole article. The microporous polybenzimidazole article may be formed into filaments or films. The micropores of the microporous polybenzimidazole article may be filled with an absorbent resin which will act to absorb chemicals or other harmful products. The microporous polybenzimidazole article with absorbent material may be formed into clothing which is highly resistant to both chemicals and heat.

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patent: 4628067 (1986-12-01), Chen, Sr. et al.
patent: 4693824 (1987-09-01), Sansone
patent: 4693825 (1987-09-01), Trouw

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