Ultrathin polyimide polymer flims and their preparation

Details Ultrathin polyimide polymer flims and their preparation Ultrathin polyimide polymer flims and their preparation

1989-05-22

1990-05-29

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

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

Patent

active

049294059

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

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patent: 4279855 (1981-07-01), Ward III
patent: 4374891 (1983-02-01), Ward III
patent: 4393113 (1983-07-01), Sugie et al.
patent: 4746474 (1988-05-01), Kohn

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