Surface coating on a liquid/solid contact surface for controlling electrical osmosis
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United States of America Patent
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N/A
Issued Date -
Sep 18, 2003
app pub date -
May 9, 2003
filing date -
Jul 4, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a surface coating oh an interface between a liquid and a solid, which allows the neutralization of charged surfaces in an aqueous solution or the generation of exactly defined surface charges. For this purpose the surface is coated with neutral and/or charged macromolecules, amphiphilic molecules or polymers being suited, individually or combined, to adjust a predetermined surface charge on the interface or to neutralize a given surface charge. If the coating contains neutral macromolecules, undesired effects caused by the electric osmosis are prevented. If the macromolecules are charged, an exactly defined surface charge can be adjusted.
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