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

1986-10-10

1988-05-24

Lieberman, Allan

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

55 16, 21050032, 264298, 26433111, 26433121, 428220, 106190, B29C 4112

Patent

active

047464755

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: 3551244 (1970-12-01), Forester et al.
patent: 4155793 (1979-05-01), Salemme et al.
patent: 4279855 (1981-07-01), Wand, III
patent: 4556530 (1985-12-01), van der Scheer et al.

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