Ultrathin polyimide polymer films and their preparation

Details Ultrathin polyimide polymer films and their preparation Ultrathin polyimide polymer films and their preparation

1989-04-17

1989-11-14

Foelak, Morton

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428334, 4284735, 528188, 528229, 528353, B29C 4112

Patent

active

048806994

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:
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patent: 3673145 (1972-06-01), Minami et al.
patent: 3767737 (1973-10-01), Lundstrom
patent: 3892665 (1975-07-01), Steigelmann et al.
patent: 4155793 (1979-05-01), Selemme et al.
patent: 4279855 (1981-07-01), Ward
patent: 4374891 (1983-02-01), Ward
patent: 4393113 (1983-07-01), Sugie et al.
patent: 4746474 (1988-05-01), Kohn

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