Optically detectable, floatable arsenic- and antimony-free,...

Details Optically detectable, floatable arsenic- and antimony-free,... Optically detectable, floatable arsenic- and antimony-free,...

2009-02-26

2011-11-08

Group, Karl (Department: 1731)

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

C501S007000, C065S033800

Reexamination Certificate

active

08053381

ABSTRACT:
An optically detectable, floatable arsenic- and antimony-free, glazable lithium-aluminosilicate glass that can be prestressed and the glass ceramic converted therefrom are described. The glass or the glass ceramic has a composition (in % by weight based on oxide) of essentially SiO255-69, Al2O319-25, Li2O 3.2-5, Na2O 0-1.5, K2O 0-1.5, MgO 0-2.2, CaO 0-2.0, SrO 0-2.0, BaO 0-2.5, ZnO 0-<1.5, TiO21-3, ZrO21-2.5, SnO20.1-<1, ΣTiO2+ZrO2+SnO22.5-5, P2O50-3, Nd2O30.01-0.6, CoO 0-0.005, F 0-1, B2O30-2.

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