Ultrathin polyether sulfone polymer films and their preparation

Details Ultrathin polyether sulfone polymer films and their preparation Ultrathin polyether sulfone polymer films and their preparation

1986-10-10

1988-10-11

Lieberman, Allan M.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

21050041, 264298, 428220, B29C 4112

Patent

active

047769998

ABSTRACT:
Disclosed herein are free-standing, pinhole-free, ultrathin polyether sulfone films having thicknesses of about 400 angstroms or less and a process for preparing 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), Ward, III
patent: 4556530 (1985-12-01), van der Scheer et al.

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