Ciba-geigy Corporation

Giba-geigy Corporation

Barry P Reinherz

Robert Michael Sullivan

In glass enamel coating compositions containing a glass frit system, optionally a metal oxide pigment and a vehicle therefor, the improvement comprising the presence therein of a series of metal powders to provide anti-stick, color maintenance and adhesion properties; the resulting coatings being particularly effective for application to glass sheets which are subsequently subjected to high temperature forming procedures.

Glass enamel coating compositions

Lead-free glass frit compositions for use in vitreous coatings consisting essentially of SiO.sub.2 -Bi.sub.2 O.sub.3 -B.sub.2 O.sub.3 -alkali metal oxide-ZrO.sub.2 /TiO.sub.2 in appropriate concentrations.

Lead-free glass frit compositions

In glass enamel coating compositions containing a glass frit system and a vehicle therefor, the improvement comprising the presence therein of copper sulfide or copper sulfate as an anti-stick agent; the resulting coatings being effective for application to glass sheets which are subsequently subjected to high temperature forming procedures.

Use of glass enamel coating compositions as an anti-sticking agent

In glass enamel coating compositions containing a glass frit system and a vehicle therefor, the improvement comprising the presence therein of iron, aluminum, zinc and tin sulfides or sulfates as an anti-stick agent; the resulting coatings being effective for application to glass sheets which are subsequently subjected to high temperature forming procedures.

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Lawrence, PA, United States of America

Barry P Reinherz