Composition suitable for protection comprising copolymer and hydrophilic silane

Abstract

Compositions include a water-soluble copolymer, a hydrophilic silane compound, and in some embodiments surfactant dispersed in a liquid phase. Methods of using the compositions to coat and optionally clean a substrate are also disclosed.

What is claimed is: 
     
         1 . A composition comprising:
 a liquid phase;   a water-soluble copolymer of an ethylenically unsaturated acidic monomer and an ethylenically unsaturated monomer comprising a nitrogen-containing terminal group, or salt thereof; and   a hydrophilic silane component.   
     
     
         2 . The composition of  claim 1  wherein the ethylenically unsaturated monomer comprising a nitrogen-containing terminal group is acrylamide represented by the formula 
       
         
           
           
               
               
           
         
         wherein R 4  is H or methyl; and 
         R 1  and R 2  are independently selected from H; C 1 -C 3  alkyl; or R 3 SO 3 H, wherein R 3  is alkylene having from 2 to 6 carbon atoms. 
       
     
     
         3 . The composition of  claim 2  wherein the water-soluble copolymer has the general formula 
       
         
           
           
               
               
           
         
         wherein R 4  is H or methyl; 
         R 1  and R 2  are independently selected from H; C 1 -C 3  alkyl; —CH 2 OH, or R 3 SO 3 H, wherein R 3  is alkylene having from 2 to 6 carbon atoms; and 
         M +  is a cation. 
       
     
     
         4 . The composition of  claim 1  wherein the ethylenically unsaturated monomer comprising a nitrogen-containing terminal group comprises a quaternized ammonium terminal group and is represented by the formula 
       
         
           
           
               
               
           
         
         wherein R 4  is H or methyl; 
         L is a divalent atom or linking group; 
         R 5 , R 6 , and R 7  are independently selected from C 1 -C 4  alkyl; and 
         X −  is an anion. 
       
     
     
         5 . The composition of  claim 4  wherein the water-soluble copolymer has the general formula 
       
         
           
           
               
               
           
         
         wherein R 4  is H or methyl; 
         L is a divalent atom or linking group; 
         R 5 , R 6 , and R 7  are independently selected from C 1 -C 4  alkyl; 
         X −  is an anion; and 
         M +  is a cation. 
       
     
     
         6 . The composition of  claims 1 - 5  wherein the water-soluble copolymer has a weight ratio of ethylenically unsaturated acidic monomer to ethylenically unsaturated monomer comprising a nitrogen-containing terminal group in a range of from 5:95 to 95:5. 
     
     
         7 . The composition of  claims 1 - 6  wherein the liquid carrier comprises at least 50 percent by weight water 
     
     
         8 . The composition of  claims 1 - 6  wherein the hydrophilic silane component is present in an amount ranging from 5 to 50 weight % solids. 
     
     
         9 . The composition of  claims 1 - 8  wherein the hydrophilic silane compound is a zwitterionic silane. 
     
     
         10 . The composition of  claims 1 - 8  wherein the hydrophilic silane compound is a sulfonate-functional silane. 
     
     
         11 . The composition of  claims 9 - 10  wherein the hydrophilic silane is a sulfonate-functional zwitterionic silane. 
     
     
         12 . The composition of  claims 1 - 11  wherein the composition further comprises surfactant. 
     
     
         13 . The composition of  claim 12  wherein the composition comprises nonionic surfactant and anionic surfactant. 
     
     
         14 . The composition of  claims 1 - 13  wherein the composition comprises an alkyl polysaccharide nonionic surfactant. 
     
     
         15 . The composition of  claims 1 - 13  further comprising a preservative, an alkali metal silicate, silica nanoparticles, or a combination thereof. 
     
     
         16 . A method of protecting and optionally cleaning an article, the method comprising applying the composition of  claims 1 - 15  to a surface of a substrate and at least partially removing the aqueous liquid phase from the surface of the substrate. 
     
     
         17 . The method of  claim 16  further comprising rubbing the composition on the surface. 
     
     
         18 . The method of  claims 16 - 17  wherein the surface comprises at least one of glass, metal, ceramic, wood, or an organic polymeric material. 
     
     
         19 . The method of  claims 16 - 18  wherein the substrate is selected from the group consisting of shower surrounds, bathtubs, toilets, sinks, faucets, windows, mirrors, appliances, and countertops. 
     
     
         20 . An article comprising a coating comprising the dried composition of  claims 1 - 16 .