Stock material or miscellaneous articles – Composite – Of carbohydrate
Reexamination Certificate
2011-08-30
2011-08-30
Kiliman, Leszek (Department: 1788)
Stock material or miscellaneous articles
Composite
Of carbohydrate
C428S537700, C514S255030, C427S326000
Reexamination Certificate
active
08007921
ABSTRACT:
A novel gypsum board having improved antimicrobial and antibacterial properties is disclosed. The board comprises a gypsum core, front and back paper facings, and a polymeric antimicrobial or antibacterial compound effective at inhibiting fungal growth. Preferred polymeric antimicrobial and antibacterial compounds include polyDADMAC, polyTMMC, and quaternized polyvinyl pyridine derivatives. The novel gypsum board further comprises a non-polymeric antimicrobial or antibacterial compound. Preferred non-polymeric antimicrobial or antibacteral compounds include cetyl pyridinium chloride and sodium pyrithione. The polymeric antimicrobial or antibacterial compound can be present in the gypsum core and/or on one or both of the paper facings. The non-polymeric antimicrobial or antibacterial compound may be encapsulated in a material or ionically associated with the polymeric antimicrobial or antibacterial compound to allow releases of the non-polymeric antimicrobial or antibacterial compound over time and/or upon exposure to moisture. Methods for preparing the aforementioned novel gypsum board are also disclosed.
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Olderman Gerald
Staab Gregory
Toreki William
Elman Gerry J.
Elman Technology Law P.C.
Kiliman Leszek
Quick-Med Technologies, Inc.
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