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Title: Microporous polymer films and methods of their production

A process is described for producing thin microporous polymeric films for a variety of uses. The process utilizes a dense gas (liquefied gas or supercritical fluid) selected to combine with a solvent-containing polymeric film so that the solvent is dissolved in the dense gas, the polymer is substantially insoluble in the dense gas, and two phases are formed. A microporous film is obtained by removal of a dense gas-solvent phase. 9 figs.
Inventors:
Issue Date:
OSTI Identifier:
63434
Assignee:
Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 360601; 360602; PA: EDB-95:091433; SN: 95001401184
Patent Number(s):
US 5,422,377/A/
Application Number:
PAN: 8-223,793
Contract Number:
AC04-76DP00789
Resource Relation:
Other Information: PBD: 6 Jun 1995
Research Org:
AT&T Corporation
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FILMS; FABRICATION; PORE STRUCTURE; POROSITY; POLYMERS; LIQUEFIED GASES; SUPERCRITICAL STATE; SOLVENTS

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