Method and treatment composition for imparting durable antimicrobial properties to carpet
Methods and treatment compositions for imparting durable antimicrobial properties to carpet are provided. The method includes applying a composition comprising a first antimicrobial compound and a fluoropolymer to the carpet substrate. The carpet substrate may be steamed thereafter. The treatment composition may comprise a fluoropolymer, an antimicrobial compound selected from a group consisting of zinc pyrithione, a silver-containing antimicrobial compound and combinations thereof, and a foamer. Carpet products treated with the treatment composition or treated in accordance with the methods are also provided.
1. A method of treating a carpet substrate comprising:
preparing a composition comprising zinc pyrithione, a silver-containing antimicrobial compound, a magnesium sulfate liquid, and a fluoropolymer;
adjusting the pH of the composition to a pH of about 2.0 to about 12.0;
applying the composition to the carpet substrate in the form of a foam;
steaming the carpet substrate immediately after application of the composition to the carpet substrate;
rinsing and extracting the carpet substrate; and
drying the carpet substrate in a dryer.
2. The method of claim 1 , wherein the composition comprises about 1 to about 50,000 ppm zinc pyrithione.
3. The method of claim 1 , wherein the composition is applied to the carpet substrate such that the fluoropolymer is applied to the carpet substrate in an amount of about 0.05 to about 20% owg.
4. The method of claim 1 , wherein the silver-containing antimicrobial compound comprises a zirconium phosphate-based ceramic ion-exchange resin containing silver.
5. The method of claim 4 , wherein the composition comprises from 1 to 50,000 ppm of the zirconium phosphate-based ceramic ion-exchange resin containing silver.
6. The method of claim 5 , wherein the composition comprises 200 ppm of the zirconium phosphate-based ion-exchange resin containing silver.
7. The method of claim 1 , wherein the composition is applied to the carpet substrate such that the magnesium sulfate liquid is applied to the carpet substrate in an amount of about 0.1 to about 20% owg.
8. The method of claim 7 , wherein the magnesium sulfate liquid is applied to the carpet substrate in an amount of about 2.0% owg.
9. The method of claim 1 wherein the composition is applied to the carpet substrate such that the fluoropolymer is applied to the carpet substrate in an amount of about 0.4% owg.
10. The method of claim 1 , wherein the composition comprises 500 ppm zinc pyrithione.
11. The method of claim 1 , wherein the composition is applied to the carpet substrate via a foam applicator.
12. A method of treating a carpet substrate comprising:
preparing a composition comprising a fluoropolymer, a magnesium sulfate liquid, zinc pyrithione, a zirconium phosphate-based ceramic ion-exchange resin containing silver, and a pH adjusting additive;
applying the composition to the carpet substrate in the form of a foam; and thereafter
steaming the carpet substrate.
13. The method of claim 12 , wherein the composition is applied to the carpet substrate such that the fluoropolymer is applied to the carpet substrate in an amount of about 0.05 to about 20% owg.
14. The method of claim 12 , wherein the composition comprises from 1 to 50,000 ppm zinc pyrithione.
15. The method of claim 12 , wherein the composition has a pH of about 2.1.
16. The method of claim 12 , wherein the composition is applied to the carpet substrate via a foam applicator.