Eurokera S.n.c.

Vetrotex Saint-gobain

Marie-Helene Chopinet

Pablo Vilato

Caroline Faillat

Stephanie Pelletier

Marie-Helene Rouillon

Maike Hillers

Enamel composition, in particular intended for covering a glass pane of a fireplace insert, comprising at least one glass frit, at least one pigment in a content varying from 40 to 65% of the total weight of the enamel, preferably from 45 to 60%, and optionally at least one vehicle or medium, characterized in that the glass frit comprises the following constituents, within the limits defined below, limits included, expressed as percentages by weight of the total weight of the frit: 

Enamel composition for glass-ceramic

A process for reinforcing a glass-ceramic article, into which a maximum tension is introduced beneath the surface of the glass-ceramic, advantageously in proximity to said surface. The invention also relates to an enamel that can be used for this reinforcement, this enamel being formed from a glass frit having the following composition, the proportions being expressed as weight percentages: the sum of the alkaline-earth metal oxides CaO+BaO moreover being between 8 and 15%, and the sum of the alkali metal oxides NaO+KO+LiO moreover being between 7 and 20%. The reinforced glass-ceramics obtained by the process.

Reinforced glass-ceramic article and enamel suitable for the coating thereof

The invention relates to glass fiber compositions and fibers having use as a reinforcement element of cement-base products. As such, the composition is able to resist attack of strongly basic media. The fibers of the invention comprise the following constituents, in proportions by weight:

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Paris, France

Marie-Helene Chopinet