Coating with thermal stability and anti-scratch properties, glass product having such coating, varnish product for producing such coating and method for protecting a glass surface and in particular a pharmaceutical primary glass container

Abstract

The present invention describes a coating with lubricating and anti-scratch properties, comprising glycidoxypropyltrimethoxysilane and phenyltriethoxysilane. The present invention further describes a varnish product for producing such coating and a glass product, in particular a pharmaceutical primary glass container having such coating. Last, but not least, a method is disclosed for protecting a glass surface.

1 . A coating with lubricating and anti-scratch properties, comprising glycidoxypropyltrimethoxysilane and phenyltriethoxysilane. 
     
     
         2 . A glass product having a coating according to  claim 1 . 
     
     
         3 . A pharmaceutical primary glass container having a coating according to  claim 1 . 
     
     
         4 . The pharmaceutical primary glass container according to  claim 3 , wherein said coating has a thickness less than 50 nm. 
     
     
         5 . A varnish product for making a coating, comprising glycidoxypropyltrimethoxysilane and phenyltriethoxysilane and a solvent. 
     
     
         6 . The varnish product for making a coating according to  claim 5 , wherein said glycidoxypropyltrimethoxysilane and said phenyltriethoxysilane are each in a weight percentage between 2% and 8%. 
     
     
         7 . The varnish product for making a coating according to  claim 6 , further comprising HCl (0.1N) in a weight percentage between 1% and 2%, and a photoinitiator in a weight percentage between 0.1% and 1%. 
     
     
         8 . The varnish product for making a coating according to  claim 5 , wherein said solvent is either ethanol or propylene glycol methyl ether. 
     
     
         9 . The varnish product for making a coating according to  claim 5 , wherein the varnish product is derived from a sol-gel varnish synthesis. 
     
     
         10 . A method for protecting the glass surface of a glass product comprising applying a varnish product according to  claim 5  to the glass surface.