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US 10,370,543 B2Granted
High quality antimicrobial paint composition
AssigneeThe Sherwin-Williams Company
InventorsKathleen R Gisser, Morgan S Sibbald, Wanda J Smith, Janice K. Dreshar, Donald A. Prochazka
Life of this patent
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Abstract
A high quality paint formulation comprises water, latex polymer, pigment, and a quaternary ammonium compound. The high quality paint is capable of killing gram positive bacteria, gram negative bacteria at a rate of greater than 3 logs within 2 hours of application of bacteria to a painted surface. The high quality paint is also capable of inactivating viruses.
Claims19
A latex paint composition comprising:
- (a) a binder copolymer comprising an acrylic component and a second polymeric component comprising one or more of a vinyl component and styrene component and having a compatibility score of 0.5 or less;
- (b) from about 0.25% by weight to about 3.0% by weight of a quaternary ammonium compound;
- (c) a hiding pigment;
- and
- (d) water,
- wherein the paint composition has a pigment volume concentration (PVC) of about 5 to about 60;
- wherein the quaternary ammonium compound is present in a suitable amount to provide one or more of (1) gram negative bacterial reduction by greater than 3 logs within 2 hours of application of the gram negative bacteria to a dried surface of the paint composition;
- (2) gram positive bacterial reduction by greater than 3 logs within 2 hours of application of the gram positive bacteria to a dried surface of the paint composition;
- or (3) viral reduction by greater than 3 logs within 2 hours of application of the virus to a dried surface of the paint composition, wherein the paint composition has a dried paint film gloss of 5 to 85 gloss units measured at 60°.
6 more elements
Dependencies are inferred from the claim text.