Coating material for a glass or glass ceramic substrate, and coated glass or glass ceramic substrate

Abstract

A coating material is provided that includes a sol-gel coating system, pigments, and chain-like or fibrous nanoparticles. The coating system is stable at high temperatures and is suitable for glass or glass-ceramic substrates having a low thermal expansion coefficient.

1 - 15 . (canceled) 
     
     
         16 . A coating material for coating glass or glass ceramics, comprising a sol-gel coating system which includes particles of a chain-like morphology and pigments. 
     
     
         17 . The coating material as in  claim 16 , wherein the particles are nanoparticles having an average length from 50 to 150 nm and an average size from 5 to 25 nm. 
     
     
         18 . The coating material as in  claim 16 , wherein the coating material is semi-transparent or opaque. 
     
     
         19 . The coating material as in  claim 16 , wherein the sol-gel coating system is a hybrid polymer sol-gel coating system. 
     
     
         20 . The coating material as in  claim 16 , wherein the particles are SiO 2  particles. 
     
     
         21 . The coating material as in  claim 16 , further comprising a mass ratio of sol-gel to particles that ranges from 10:1 to 1:1. 
     
     
         22 . The coating material as in  claim 16 , further comprising a mass ratio of sol-gel to particles that ranges from 5:1 to 2:1. 
     
     
         23 . The coating material as in  claim 16 , further comprising absorbing pigments having a size from 1 to 200 nm. 
     
     
         24 . The coating material as in  claim 23 , wherein the absorbing pigments have a size from 10 to 50 nm. 
     
     
         25 . The coating material as in  claim 16 , further comprising an organic crosslinker. 
     
     
         26 . The coating material as in  claim 25 , wherein the organic crosslinker is selected from the group consisting of an epoxide, an acrylate, and combinations thereof. 
     
     
         27 . The coating material as in  claim 16 , wherein the particles comprise a plurality of primary particles and chain-like secondary particles. 
     
     
         28 . A coating material for coating glass or glass ceramics, comprising in mass percent:
 sol-gel hydrolysate from 14 to 25%;   inorganic particles having a chain-like and/or fibrous morphology from 11 to 20%;   inorganic pigments from 18 to 44%; and   solvents from 23 to 45%.   
     
     
         29 . The coating material as in  claim 28 , further comprising at least one organic crosslinker in a proportion of less than 4%. 
     
     
         30 . A composite material, comprising:
 a glass or glass ceramic substrate, and   a coating material comprising in mass percent:
 a crosslinked sol-gel hydrolysate from 22 to 38%; and 
 inorganic particles from 18 to 31%, the inorganic particles having a morphology selected from the group consisting of chain-like, fibrous, and combinations thereof. 
   
     
     
         31 . The composite material as in  claim 30 , wherein the crosslinked sol-gel hydrolysate is an organically sol-gel hydrolysate, an inorganically crosslinked sol-gel hydrolysate, and combinations thereof. 
     
     
         32 . The composite material as  claim 30 , wherein the crosslinked sol-gel hydrolysate is an organically sol-gel hydrolysate having a degree of organic crosslinking of more than 30%. 
     
     
         33 . A composite material comprising a glass or glass ceramic substrate and a baked coating material comprising, in mass percent, from 30 to 55% of transparent semi-metal or metal oxides and from 45 to 70% of inorganic pigments. 
     
     
         34 . The composite material as in  claim 33 , wherein the composite material is selected from the group consisting of microporous, mesoporous, and combinations thereof.