U.S. Patent 9,193,820 (November 24, 2015), "Antimicrobial Polyurethane Foam and Process to Make the Same," Bhalchandra M. Karandlkar and Bruce L. Gibbins (Avent, Inc., Alpharetta, Georgia, USA).
The versatility and economics of flexible polyurethane foams are attractive for absorbent wound dressings. These dressings must remain in place for several days to absorb the wound exudate, and be antimicrobial.
Karandlkar and Gibbins developed an antimicrobial polyurethane foam that is formed from a multi-functional isocyanate, an aqueous polyol, an antimicrobial metal, and a complexing agent. The complexing agent forms a stable blend of the antimicrobial metals with the polyol. Complexing agents include amine compounds, ammonium-containing compounds, and ammonia. The antimicrobial metals can be silver, zinc, or copper compounds, such as silver saccharinate.
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|Title Annotation:||INDUSTRY PATENTS|
|Article Type:||Brief article|
|Date:||Mar 1, 2016|
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