Non-porous polycarbonate films less than 1 .mu.m thick

Details Non-porous polycarbonate films less than 1 .mu.m thick Non-porous polycarbonate films less than 1 .mu.m thick

1976-03-15

1977-05-10

McCamish, Marion E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

156242, 260 47XA, 264298, 428412, B32B 3104, B29D 706

Patent

active

040229440

ABSTRACT:
Non-porous, thin, polycarbonate films and a process for their production. Solutions of polycarbonates in concentrations of less than 5 parts solids per 100 parts solvent are applied to the surface of liquids immiscible, or sparingly miscible with, the solvent for the polycarbonate. The solvent is then evaporated, and the resultant film removed. The films are useful for the separation of gas and liquid mixtures and for electrical insulating purposes.

REFERENCES:
patent: 3975225 (1976-08-01), Bottenbruch

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