Stock material or miscellaneous articles – Composite – Of polycarbonate
Reexamination Certificate
2006-12-11
2011-10-04
Shosho, Callie (Department: 1787)
Stock material or miscellaneous articles
Composite
Of polycarbonate
C428S422000, C428S426000, C428S446000, C428S457000, C428S480000, C428S522000, C428S523000, C428S532000, C424S409000, C427S255140, C427S255600, C427S337000, C427S569000
Reexamination Certificate
active
08029902
ABSTRACT:
Bactericidal substrates and methods of functionalizing the surface of substrates with quaternary ammonium and quaternary phosphonium groups using non-equilibrium RF plasmas are provided. The methods include the step of treating the surface of a substrate with a plasma to create surface active sites. Some methods include the step of reacting the surface active sites with linker molecules, which are then reacted with quaternary ammonium precursor molecules to provide a substrate surface functionalized with quaternary ammonium precursor groups. Other methods react the surface active sites with polymer precursor molecules under plasma conditions to form a covalently-bound polymer layer having reactive sites. The polymer reactive sites are reacted with quaternary phosphonium precursor molecules to provide a substrate surface functionalized with quaternary phosphonium groups. Also provided are bactericidal substrates having immobilized, covalently-bound quaternary ammonium or quaternary phosphonium groups.
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Cruz-Barba Luis Emilio
Denes Ferencz S.
Manolache Sorin Odisei
Martinez-Gomez Alvaro de Jesus
Bell & Manning, LLC
Freeman John
Shosho Callie
Wisconsin Alumni Research Foundation
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