Coating Composition

Abstract

A barrier coating composition may include an alcohol-based binder; and an inorganic particulate, wherein mineral oil transmission through the barrier coating is such that the reduction in measured IR intensity at 2920 cm −1 is less than 1.0%, as determined by ATR-FTIR spectroscopy.

1 - 31 . (canceled) 
     
     
         32 . A barrier coating composition, comprising:
 an alcohol-based binder; and   an inorganic particulate, wherein mineral oil transmission through the barrier coating is such that the reduction in measured IR intensity at 2920 cm −1  is less than 1.0%, as determined by ATR-FTIR spectroscopy.   
     
     
         33 . A barrier coating composition according to  claim 32 , wherein the inorganic particulate is selected from an alkaline earth metal carbonate or sulphate, an aluminosilicate, talc, perlite, diatomaceous earth, magnesium hydroxide and aluminum trihydrate, or combinations thereof. 
     
     
         34 . A barrier coating according to  claim 32 , wherein the inorganic particulate is talc. 
     
     
         35 . A barrier coating according to  claim 32 , wherein the inorganic particulate is mica. 
     
     
         36 . A barrier coating composition according to  claim 32 , wherein the inorganic particulate is an aluminosilicate. 
     
     
         37 . A barrier coating composition according to  claim 32 , wherein the inorganic particulate is kaolin having a shape factor of at least 30. 
     
     
         38 . A barrier coating composition according to  claim 32 , wherein the inorganic particulate is kaolin having a shape factor of at least 90. 
     
     
         39 . A barrier coating composition according to  claim 32 , wherein the alcohol-based binder is polyvinyl alcohol. 
     
     
         40 . A barrier coating composition according to  claim 32 , wherein the inorganic particulate and alcohol-based binder are present in the composition in a weight ratio of from about 5:1 to about 1:5. 
     
     
         41 . A barrier coating composition, comprising:
 an alcohol-based binder; and   an inorganic particulate, wherein mineral oil transmission through the barrier coating is such that the reduction in measured IR intensity at 2920 cm −1  is less than 20.0%, as determined by ATR-FTIR spectroscopy.   
     
     
         42 . A barrier coating composition according to  claim 41 , wherein the inorganic particulate is selected from an alkaline earth metal carbonate or sulphate, an aluminosilicate, talc, perlite, diatomaceous earth, magnesium hydroxide and aluminum trihydrate, or combinations thereof. 
     
     
         43 . A barrier coating according to  claim 41 , wherein the inorganic particulate is talc or mica. 
     
     
         44 . A barrier coating composition according to  claim 41 , wherein the inorganic particulate is an aluminosilicate. 
     
     
         45 . A barrier coating composition according to  claim 41 , wherein the inorganic particulate is kaolin having a shape factor of at least 30. 
     
     
         46 . A barrier coating composition according to  claim 41 , wherein the alcohol-based binder is polyvinyl alcohol. 
     
     
         47 . A barrier coating composition according to  claim 41 , wherein the inorganic particulate and alcohol-based binder are present in the composition in a weight ratio of from about 5:1 to about 1:5. 
     
     
         48 . A barrier coating composition, comprising:
 an alcohol-based binder; and   an inorganic particulate, wherein mineral oil transmission through the barrier coating is such that the reduction in measured IR intensity at 2920 cm −1  is less than 10.0%, as determined by ATR-FTIR spectroscopy.   
     
     
         49 . A barrier coating composition according to  claim 48 , wherein the inorganic particulate is selected from an alkaline earth metal carbonate or sulphate, an aluminosilicate, talc, perlite, diatomaceous earth, magnesium hydroxide and aluminum trihydrate, or combinations thereof. 
     
     
         50 . A barrier coating according to  claim 48 , wherein the inorganic particulate is talc or mica. 
     
     
         51 . A barrier coating composition according to  claim 48 , wherein the inorganic particulate is kaolin having a shape factor of at least 30.