Ultrathin polyether sulfone films and their preparation

Details Ultrathin polyether sulfone films and their preparation Ultrathin polyether sulfone films and their preparation

1988-01-29

1990-03-13

Lieberman, Allan M.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

264 41, 264298, 428220, 524465, B29C 4112

Patent

active

049082671

ABSTRACT:
Disclosed herein are free-standing, pinhole-free, ultrathin polyether sulfone films having thicknesses of about 400 angstroms or less and a process for preparing them. The films find particular utility in separatory applications.

REFERENCES:
patent: 3892665 (1975-07-01), Steigelmann et al.
patent: 4155793 (1979-05-01), Salemme et al.
patent: 4163725 (1979-08-01), Sano et al.
patent: 4279855 (1981-07-01), Ward, III
patent: 4444662 (1984-04-01), Conover
patent: 4520044 (1985-05-01), Sundet

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