Stabilization of antimicrobial coatings

Abstract

Described herein is a coated building panel comprising: a substrate comprising a first major surface opposite a second major surface; a coating atop at least one of the first major surface or the second major surface, the coating comprising: a binder composition; an antimicrobial composition comprising a cationic compound; a stabilization composition comprising: a silicate compound; and a surfactant having an HLB value between about 10 and about 14.

1 . A coated building panel comprising:
 a substrate comprising a first major surface opposite a second major surface;   a coating atop at least one of the first major surface or the second major surface, the coating comprising:
 a binder composition; 
 an antimicrobial composition comprising a cationic compound; 
 a stabilization composition comprising:
 a silicate compound; and 
 a surfactant having an HLB value between about 10 and about 14. 
 
   
     
     
         2 . The coated building panel according to  claim 1 , wherein the binder composition comprises an anionic binder. 
     
     
         3 . The coated building panel according to  claim 1 , wherein the binder composition comprises an emulsion polymer, selected from an alkyd emulsion, styrene acrylic, and combinations thereof. 
     
     
         4 . (canceled) 
     
     
         5 . The coated building panel according to  claim 1 , wherein the binder composition is present in an amount ranging from about 4.0 wt. % to about 80.0 wt. % based on the total weight of the coating. 
     
     
         6 . The coated building panel according to  claim 1 , wherein the cationic compound comprises quaternary ammonium compounds, and wherein the quaternary ammonium compounds is present in an amount ranging from about 0.1 wt. % to about 10.0 wt. % based on the total weight of the coating. 
     
     
         7 . (canceled) 
     
     
         8 . The coated building panel according to  claim 1 , wherein the silicate compound is thixotropic, and wherein the silicate compound is present in an amount ranging from about 0.1 wt. % to about 1.0 wt. % based on the total weight of the coating. 
     
     
         9 . The coated building panel according to  claim 1 , wherein the silicate compound is lithium sodium magnesium silicate. 
     
     
         10 . (canceled) 
     
     
         11 . The coated building panel according to  claim 1 , wherein the surfactant is present in an amount ranging from about 0.2 wt. % to about 14.0 wt. % based on the total weight of the coating. 
     
     
         12 . The coated building panel according to  claim 1 , wherein the substrate is a fibrous body. 
     
     
         13 . A coating composition comprising:
 a liquid carrier;   a solid blend comprising:
 a binder composition; 
 an antimicrobial composition comprising a cationic compound; 
 a stabilization composition comprising:
 a silicate compound; and 
 a surfactant having an HLB value between about 10 and about 14. 
 
   
     
     
         14 . The coating composition according to  claim 13 , wherein the binder composition comprises an anionic binder. 
     
     
         15 . The coating composition according to  claim 13 , wherein the binder composition comprises an emulsion polymer, and wherein the emulsion polymer is selected from an alkyd emulsion, styrene acrylic, and combinations thereof. 
     
     
         16 . (canceled) 
     
     
         17 . The coating composition according to  claim 13 , wherein the binder composition is present in an amount ranging from about 4.0 wt. % to about 80.0 wt. % based on the total weight of the solid blend. 
     
     
         18 . The coating composition according to  claim 13 , wherein the cationic compound comprises quaternary ammonium compounds, and wherein the quaternary ammonium compounds is present in an amount ranging from about 0.1 wt. % to about 10.0 wt. % based on the total weight of the solid blend. 
     
     
         19 . (canceled) 
     
     
         20 . The coating composition according to  claim 13 , wherein the silicate compound is thixotropic, and wherein the silicate compound is present in an amount ranging from about 0.1 wt. % to about 1.0 wt. % based on the total weight of the solid blend. 
     
     
         21 . The coating composition according to  claim 13 , wherein the silicate compound is lithium sodium magnesium silicate. 
     
     
         22 . (canceled) 
     
     
         23 . The coating composition according to  claim 13 , wherein the surfactant is present in an amount ranging from about 0.2 wt. % to about 14.0 wt. % based on the total weight of the solid blend. 
     
     
         24 . The coating composition according to any one of  claims 13  to  23 , wherein the liquid carrier comprises water, and wherein the liquid carrier is present in an amount ranging from about 5.0 wt. % to about 80.0 wt. % based on the total weight of the coating composition. 
     
     
         25 . (canceled) 
     
     
         26 . A method of forming a coated building panel comprising
 a) applying the coating composition according to  claim 13  to a substrate; and   b) drying the coating composition so that substantially all liquid carrier is removed to form the coated building panel,   wherein step b) is performed at a temperature ranging from about 80° C. to about 135° C.   
     
     
         27 . The method according to  claim 26  wherein the substrate comprises a fibrous body. 
     
     
         28 . (canceled)