Ultrathin polyimide polymers films and their preparation

Details Ultrathin polyimide polymers films and their preparation Ultrathin polyimide polymers films and their preparation

1986-10-10

1988-05-24

Lieberman, Allan M.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

55 16, 21050039, 264298, 26433119, 428220, 524465, 524466, B29C 4112

Patent

active

047464747

ABSTRACT:
Disclosed herein are free-standing, pinhole-free, ultrathin polyimide films having thicknesses of about 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: 4132924 (1979-01-01), Kimura et al.
patent: 4155793 (1979-05-01), Salemme et al.
patent: 4279855 (1981-07-01), Ward, III
patent: 4374891 (1983-02-01), Ward, III
patent: 4528004 (1985-07-01), Makina et al.
patent: 4556530 (1985-12-01), van der Saheer et al.
patent: 4644046 (1987-08-01), Yamada

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