Ultrathin cellulose ester polymer films and their preparation

Details Ultrathin cellulose ester polymer films and their preparation Ultrathin cellulose ester polymer 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, 106169, 106196, B29C 412

Patent

active

049082663

ABSTRACT:
Disclosed herein are pinhole-free, ultrathin, free-standing cellulose ester films having thicknesses of 400 angstroms or less and a process to prepare 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: 4279885 (1981-07-01), Ward, III

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