Colorobbia Italia S.p.a.

Colorbbia Italia S.p.a.

Davide Settembre Blundo

Giovanni Baldi

Marco Bitossi

Enrico Generali

Glass-ceramic consisting of: SiO: &#x2212;30-70 wt %; A1O: 8-45 wt %; MO:8-30 wt %; MO: 0-30 wt %; BO: 0-15 wt %; PO: 0-15 wt %; ZrO: 0-12 wt %; TiO: 0-12 wt %, wherein M is chosen in the group consisting of: Li, NA, K or mixture thereof; M' is chosen in the group consisting of: Be, Mg, Ca, Ba, Sr, Zn, Pb or mixture thereof are described.

Glass-ceramics, process for the their preparation and use

The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO&#x2014;SiO&#x2014;MeO, or (II) SiO&#x2014;MeO&#x2014;MeO, wherein: Meis chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; Meis chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Glass-ceramics process for their preparation and use

The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO &mdash;SiO &mdash;Me O, or (II) SiO &mdash;Me O &mdash;Me O, wherein: Me is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; Me is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

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Modena, Italy

Davide Settembre Blundo