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US 2014/0370066 A1Published application
Antimicrobial Glass-Ceramics
AssigneeCorning Incorporated
InventorsGeorge Halsey Beall, Nicholas Francis Borrelli, Robert Michael Morena, Charlene Marie Smith, Ying Wei
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Abstract
The application discloses the formation of antimicrobial glass-ceramic articles having an amorphous phase and a crystalline phase and an antimicrobial agent selected from the group consisting of silver, copper and a mixture of silver and copper. The antimicrobial glass-ceramic can have a Log Reduction of >2.
Claims20
An antimicrobial article comprising:
- a substrate comprising a glass-ceramic having a crystalline component and an amorphous component;
- and
- a reduced copper antimicrobial agent, and
- wherein the glass-ceramic substrate comprises a glass-ceramic selected from the group consisting of beta-spodumene solid solution, beta-quartz solid solutions, nepheline solid solutions, carnegieite solid solutions, pollucite, leucite (K[AlSi2O6]), trisilicic fluormicas, tetrasilicic fluormicas, alkali-bearing cordierite and osumilite, glass-ceramics containing substantial alkali aluminosilicate or alkali borosilicate glass, canasite, agrellite and fluoramphiboles.
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A method of making a antimicrobial article comprising the steps of:
- providing a glass-ceramic substrate having a crystalline component and an amorphous component;
- and
- subjecting said glass-ceramic substrate to an ion-exchange process using an ion-exchange bath containing at least one ion-exchangeable antimicrobial agent salt comprising copper to thereby form an antimicrobial glass-ceramic article comprising copper.
A method of forming an antimicrobial article comprising:
- combining glass-ceramic forming components comprising any one more of sand, sodium oxide, potassium oxide, aluminum oxide, and borate magnesia;
- adding a solution of an antimicrobial agent salt to the glass-ceramic forming components to form;
- and
- melting and forming the combined glass-ceramic forming components and solution of antimicrobial agent salt into a glass.
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Dependencies are inferred from the claim text.