Method of producing ambient curing sprayable transparent smart quasi-ceramic coating

Abstract

A liquid silicone-based composition for forming a coating, the composition comprising a silazane, an organometallic compound, an alkoxysilane, and an aprotic solvent, wherein when applied to a substrate the liquid composition cures to form a quasi-ceramic coating under ambient conditions.

1 . A coating comprising:
 a solid matrix of a silicone-based material having a backbone structure according to formula (I):   
       
         
           
           
               
               
           
         
       
       wherein n is a segment and in each segment:
 M is a metal independently selected from Zr, Ta, Ag, W, Al, Ti, or combinations thereof; 
 x is one or more metallosiloxane fragments; and 
 y is one or more siloxane fragments; 
 wherein the solid matrix comprises a plurality of segments n; and 
 R is independently selected from: 
 hydrogen, C 1 -C 30  alkyl, C 1 -C 30  fluoroalkyl, C 1 -C 30  alkyl amine, C 1 -C 30  dialkyl amine, C 1 -C 30  trialkyl amine, C 1 -C 30  tetraalkyl ammonium, C 1 -C 10  alkoxide, or a backbone oxygen of a second segment n. 
 
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
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         10 . (canceled) 
     
     
         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . A liquid silicone-based composition for forming a coating, the composition comprising:
 a silazane;   an organometallic compound;   an alkoxysilane; and   an aprotic solvent,   wherein when applied to a substrate the liquid composition cures to form a quasi-ceramic coating under ambient conditions.   
     
     
         17 . The composition of  claim 16 , wherein the silazane comprises an organopolysilazane. 
     
     
         18 . (canceled) 
     
     
         19 . The composition of  claim 16 , wherein the organometallic compound comprises Zr, Ta, Ag, W, Al, Ti, Cu, Ce, La, or combinations thereof. 
     
     
         20 . (canceled) 
     
     
         21 . The composition of  claim 19 , wherein the organometallic compound comprises zirconium tert-butoxide, tantalum ethoxide, silver neodecanoate, titanium butoxide, tungsten ethoxide, aluminum-tri-sec-butoxide or combinations thereof. 
     
     
         22 . (canceled) 
     
     
         23 . (canceled) 
     
     
         24 . The composition of  claim 23   16 , wherein the alkoxysilane comprises 3-aminopropyltrimethoxysilane, glycodioxypropyltrimethoxysilane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane, 1H,1H,2H,2H-perfluorodecyltrimethoxysilane, 1H, 1H ,2 H ,2H-perfluorodecyltriethoxysilane, octadecyldimethyl (3-trimethoxy silylpropyl) ammonium chloride, N-(2-aminoethyl)3-aminopropyl-trimethoxysilane, N-(2-aminoethyl)3-aminopropyl-triethoxysilane, or combinations thereof. 
     
     
         25 . The composition of  claim 16  any one of  claims 16 , wherein the solvent comprises hexamethyldisiloxane, hexamethylcyclotrisiloxane, octamethyltrisiloxane, octamethylcyclotetrasiloxane, decamethyltetrasiloxane, decamethylcyclopentasiloxane, dodecamethylpentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylhexasiloxane, t-butyl acetate, n-butyl acetate, ethyl acetate, xylene, petroleum benzene, dipropylene glycol dimethyl ether, dipropylene glycol dibutyl ether, 1-methoxy-2-propyl acetate, 2-butoxyethyl acetate, 2-(2-butoxyethoxy) ethyl acetate, naphtha, dibutylether, or combinations thereof. 
     
     
         26 . (canceled) 
     
     
         27 . The composition of  claim 16  further comprising an organic filler, an inorganic filler, a silsesquioxane, or combinations thereof. 
     
     
         28 . (canceled) 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . A method of preparing a liquid silicone-based composition, comprising:
 admixing in a solvent a silazane and an organometallic compound, thereby providing a first solution; and   admixing the first solution with an alkoxysilane, thereby providing a liquid silicone-based composition,   wherein the solvent comprises an aprotic solvent.   
     
     
         32 . The method of  claim 31 , wherein the silazane comprises an organopolysilazane. 
     
     
         33 . (canceled) 
     
     
         34 . The method of  claim 31 , wherein the organometallic compound comprises Zr, Ta, Ag, W, Al, Ti, Cu, Ce, La or combinations thereof. 
     
     
         35 . (canceled) 
     
     
         36 . The method of  claim 35 , wherein the organometallic compound comprises zirconium tert-butoxide, tantalum ethoxide, silver neodecanoate, titanium butoxide, tungsten ethoxide, aluminum-tri-sec-butoxide or combinations thereof. 
     
     
         37 . (canceled) 
     
     
         38 . (canceled) 
     
     
         39 . The method of  claim 38 , wherein the alkoxysilane comprises 3-aminopropyltrimethoxysilane, glycodioxypropyltrimethoxysilane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane, 1H,1H,2H,2H-perfluorodecyltrimethoxysilane, 1H,1H,2H,2H-perfluorodecyltriethoxysilane, octadecyldimethyl (3-trimethoxy silylpropyl) ammonium chloride, N-(2-aminoethyl)3-aminopropyl-trimethoxysilane, N-(2-aminoethyl)3-aminopropyl-triethoxysilane, or combinations thereof. 
     
     
         40 . The method of  claim 31 , wherein the solvent comprises hexamethyldisiloxane, hexamethylcyclotrisiloxane, octamethyltrisiloxane, octamethylcyclotetrasiloxane, decamethyltetrasiloxane, decamethylcyclopentasiloxane, dodecamethylpentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylhexasiloxane, t-butyl acetate, n-butyl acetate, ethyl acetate, xylene, petroleum benzene, dipropylene glycol dimethyl ether, dipropylene glycol dibutyl ether, 1-methoxy-2-propyl acetate, 2-butoxyethyl acetate, 2-(2-butoxyethoxy) ethyl acetate, naphtha, dibutylether, or combinations thereof. 
     
     
         41 . The method of  claim 31 , wherein the silazane comprises organopolysilazane, the organometallic compound comprises zirconium tert-butoxide and tantalum ethoxide, the silane comprises glycodioxypropyltrimethoxysilane, and the solvent comprises hexamethyldisiloxane. 
     
     
         42 . The method of  claim 31  further comprising admixing with the liquid silicone-based composition a solution of a second alkoxysilane. 
     
     
         43 . (canceled) 
     
     
         44 . The method of  claim 42 , wherein the alkoxysilane comprises 3-aminopropyltrimethoxysilane, glycodioxypropyltrimethoxysilane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane, 1H,1H,2H,2H-perfluorodecyltrimethoxysilane, 1H,1H,2H,2H-perfluorodecyltriethoxysilane, octadecyldimethyl (3-trimethoxy silylpropyl) ammonium chloride, N-(2-aminoethyl)3-aminopropyl-trimethoxysilane, N-(2-aminoethyl)3-aminopropyl- triethoxysilane or combinations thereof. 
     
     
         45 . The method of  claim 31  further comprising admixing with the liquid silicone-based composition comprises a second organometallic compound. 
     
     
         46 . (canceled) 
     
     
         47 . (canceled) 
     
     
         48 . The method of  claim 45 , wherein the second organometallic compound comprises zirconium tert-butoxide, tantalum ethoxide, silver neodecanoate, titanium butoxide, tungsten ethoxide, aluminum-tri-sec-butoxide or combinations thereof. 
     
     
         49 . The method of  claim 31 , further comprising admixing with the liquid silicone-based composition an organic filler, an inorganic filler, a silsesquioxane, or combinations thereof. 
     
     
         50 . (canceled) 
     
     
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         57 . (canceled)