Patent ID: 8012252
Filing Date: 2011-09-06
Classification: C09D,C23C,C30B

Abstract:
1. A slip for producing a durable hard coating on a substrate comprising: a) a suspension of silicon nitride particles in an amount of 30% by weight to 60% by weight and b) a binder comprising a nanocomposite comprising a mixture of nanosize solid particles and/or precursors of nanosize solid particles in an organically modified inorganic polycondensate or a precursor thereof from production via sol-gel process; wherein the slip does not comprise a release agent selected from the group consisting of graphite, graphite compounds, sulphides, selenides, tellurides, metal sulphides, metal selenides, metal tellurides, metal-free phthalocyanines, indanthrene dyes, borax, lead oxide, zinc oxide, mica, talc, cadmium chloride, lead iodide, cobalt chloride and silver sulfate.