Method of preparing free polyelectrolyte membranes

Details Method of preparing free polyelectrolyte membranes Method of preparing free polyelectrolyte membranes

2007-05-29

2007-05-29

Bell, Bruce F. (Department: 1746)

Chemistry: electrical and wave energy

Apparatus

Electrophoretic or electro-osmotic apparatus

C204S634000, C204S523000, C204S527000, C204S296000, C204S418000, C427S421100, C427S427400, C427S402000

Reexamination Certificate

active

10475236

ABSTRACT:
A releaseable membrane structure for producing a free membrane containing a substrate, a release stratum on the substrate and a membrane stratum on the release stratum. The release stratum and the membrane stratum contain oppositely-charged polyelectrolytes that are associated. The oppositely-charged polyelectrolytes of the release stratum are selected to dissociate upon application of stimulus whereas those of the membrane stratum are selected to remain associated upon application of the stimulus. Thus, when the stimulus is applied the polyelectrolytes in release stratum dissociate and the membrane stratum is released from the substrate and is a free membrane.

REFERENCES:
patent: 3069728 (1962-12-01), Mindick et al.
patent: 6194474 (2001-02-01), Kerres et al.
patent: 2002/0053514 (2002-05-01), Locascio et al.
patent: 2003/0124368 (2003-07-01), Lynn et al.
patent: 1187124 (1970-04-01), None
PCT International Search Report dated Aug. 13, 2002.

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