Inorganic phosphate ceramics and coatings

Abstract

This disclosure relates to hydrophobic metal phosphate ceramic comprising a Group IV element of silicon, germanium, tin, or lead having at least one hydrocarbon covalently bonded thereto. Methods of providing water proofing and/or anti-corrosion protection are provided.

1 - 45 . (canceled) 
     
     
         46 . A hydrophobic metal phosphate ceramic comprising:
 a Group IV element of silicon, germanium, tin, or lead covalently bonded to the metal phosphate ceramic, the Group IV element having at least one hydrocarbon moiety covalently bonded thereto; and   wherein, the at least one hydrocarbon moiety is independently, C 1-20  alkyl, phenyl, aryl.   
     
     
         47 . A method of forming a hydrophobic metal phosphate ceramic, the method comprising combining at least one acidic phosphate component with at least one sparingly soluble basic oxide or hydroxide component;
 at least one hydrophobic agent comprising at least one hydrophobic agent is at least one organosiliconate or is at least one polymeric or oligomeric siloxane with reactive silanol and/or alkoxyl groups covalently bonded thereto; and   one or more of an inorganic mineral silicate, wollastonite, talc, amorphous magnesium silicate, amorphous calcium silicate, diatomaceous earth, aluminosilicate, olivine, calcined Kaolin, mullite, colloidal silica, silicon dioxide, or amorphous silicon dioxide.   
     
     
         48 . The method of  claim 47 , wherein the at least one organosiliconate is a salt; or a mono-, di-, or tri-alkyl siliconate. 
     
     
         49 . A metal phosphate ceramic precursor formulation comprising the following:
 at least one hydrophobic agent, wherein the hydrophobic agent is of the general formula (I) or (II) or (III) or (IV):   
       
         
           
           
               
               
           
         
       
       where:
 R 1 , R 2 , R 3 , and R 4  are, independently, hydrogen, C 1-20  alkyl, phenyl, aryl; where alkyl includes straight-chain, branched, cyclic or acylic alkyl, or haloalkyl; 
 Y 1 , Y 2 , and Y 3  is, independently, hydroxyl, C 1-4  alkoxy, phenoxide, or halogen; or, Y 1 , Y 2 , and Y 3  is, independently, an alkali metal salt, an ammonium salt, an alkylammonium salt, a phenylammonium salt, or an alkylphenylammonium salt of Si—OH; 
 b is 0-21; n is 1,000 to 1,000,000; 
 m is 0-1,000; and 
 Z is sodium or potassium; 
 at least one acidic phosphate component in combination with one or more of formula (I), (II), and (III); and 
 at least one sparingly soluble basic metal oxide or hydroxide in combination with formula (IV), the at least one sparingly soluble basic metal oxide or hydroxide in molar excess to that of the at least one sparingly soluble acidic phosphate component. 
 
     
     
         50 . The metal phosphate ceramic precursor formulation of  claim 49 , further comprising one or more of an inorganic mineral silicate, wollastonite, talc, amorphous magnesium silicate, amorphous calcium silicate, diatomaceous earth, aluminosilicate, olivine, calcined Kaolin, mullite, colloidal silica, silicon dioxide, and amorphous silicon dioxide. 
     
     
         51 . The metal phosphate ceramic precursor formulation of  claim 49 , wherein formula (IV) is at least one soluble basic inorganic salt selected from an alkylsiliconate. 
     
     
         52 . A method of preventing or reducing fungal and/or bacterial growth on a surface, the method comprising
 contacting a surface with an aqueous composition comprising:
 at least one inorganic phosphate; 
 at least one sparingly soluble metal oxide/hydroxide in molar excess amount to that of the at least one sparingly soluble inorganic phosphate; 
 at least one sparingly soluble inorganic mineral at least one sparingly soluble inorganic mineral, wherein the at least one sparingly soluble inorganic mineral is one or more of an inorganic mineral silicate, wollastonite, talc, amorphous magnesium silicate, amorphous calcium silicate, diatomaceous earth, aluminosilicate, olivine, calcined Kaolin, mullite, colloidal silica, or amorphous silicon dioxide; and 
 optionally, at least one soluble basic inorganic salt; and 
   contacting a surface with the combined aqueous composition, wherein the surface, after contacting, provides a basic environment of at least pH 9 to pH 14; and   preventing or reducing fungal and/or bacterial growth on the surface.   
     
     
         53 . The method of  claim 52 , comprising the at least one soluble basic inorganic salt selected from an alkylsiliconate, or one or more of an alkali metal or alkali earth metal salt of a phosphate or a silicate. 
     
     
         54 . A method of preventing or reducing attachment of Mollusca on a surface, the method comprising:
 combining an aqueous composition comprising:
 at least one inorganic phosphate; 
 at least one sparingly soluble metal oxide/hydroxide in molar excess amount to that of the at least one sparingly soluble inorganic phosphate; 
 at least one sparingly soluble inorganic mineral, wherein the at least one sparingly soluble inorganic mineral is one or more of an inorganic mineral silicate, wollastonite, talc, amorphous magnesium silicate, amorphous calcium silicate, diatomaceous earth, aluminosilicate, olivine, calcined Kaolin, mullite, colloidal silica, or amorphous silicon dioxide; and 
 optionally, at least one soluble basic inorganic salt; 
   contacting a surface with the combined aqueous composition, wherein the surface, after contacting, provides a basic environment of at least pH 9 to pH 14; and   preventing or reducing attachment of Mollusca on the surface.   
     
     
         55 . The method of  claim 54 , wherein the Mollusca is a fresh water mussel, a zebra mussel or quagga mussel. 
     
     
         56 . The method of  claim 54 , wherein the surface is associated with a ship hull or a water treatment facility. 
     
     
         57 . The method of  claim 54 , comprising the at least one soluble basic inorganic salt selected from an alkylsiliconate, or one or more of an alkali metal or alkali earth metal salt of a phosphate or a silicate.