Process for forming porous polmyeric product from a nonporous po

Details Process for forming porous polmyeric product from a nonporous po Process for forming porous polmyeric product from a nonporous po

1993-07-21

1996-03-12

Spear, Frank

Liquid purification or separation

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Supported, shaped or superimposed formed mediums

21050038, 21050041, 21050042, B01D 6700

Patent

active

054983355

ABSTRACT:
A product having a porous polymeric structure is formed from a non-porous polymeric sheet by sequential contact of the non-porous sheet with a solvent for the sheet and then a non-solvent for the sheet. The porous product can be porous through all or a portion of its thickness.

REFERENCES:
patent: 4764320 (1988-08-01), Chau et al.
patent: 4775474 (1988-10-01), Chau et al.
patent: 5112651 (1992-05-01), Watanabe et al.
patent: 5137635 (1992-08-01), Seita et al.

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