Glass-ceramics, process for the their preparation and use

US6946414B2 · kind B2 · utility

Assignee

• COLOROBBIA ITALIA S.P.A. · IT

Inventors

• Marco Bitossi · Empoli, IT
• Giovanni Baldi · Gigliola, IT
• Enrico Generali · Modena, IT
• Davide Settembre Blundo · Modena, IT

Key dates

• Filing date: Jul 18, 2001
• Grant date: Sep 20, 2005
• Expiry date: Jul 18, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B41/86
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Glass-ceramic consisting of: SiO2: −30-70 wt %; A12O3: 8-45 wt %; M2O:8-30 wt %; MO: 0-30 wt %; B2O3: 0-15 wt %; P2O5: 0-15 wt %; Zr2O: 0-12 wt %; TiO2: 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.