Process for manufacturing a flexible support for an electrophoretic medium
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United States of America Patent
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Mar 15, 2011
Grant Date -
Oct 2, 2008
app pub date -
Mar 30, 2007
filing date -
Mar 30, 2007
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Abstract
A process for making a support for an electrophoretic medium comprising the steps of: applying an agarose coating to a corona treated polymeric film by transferring a layer of agarose solution onto a surface of the corona treated polymeric film. The pH of the agarose solution can be generally maintained between about 8 and about 11 and the concentration of the agarose solution can be generally maintained between about 0.1 and about 0.4% agarose by weight. The agarose powder used to make the agarose solution can be pre-treated by introducing a fresh reducing atmosphere above the agarose powder and exposing the agarose powder to a reducing atmosphere. The reducing atmosphere treatment may be repeated at least three times.
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