Reproducible cadmium@-free coloured glass useful in light display units - contg lead@ and oxide(s) of silicon, aluminium, germanium, zirconium, hafnium, titanium, tin, niobium, tantalum, etc

摘要

Cd-free, coloured glass comprises: 10-80 (wt.%) SiO2, 3-85 Pb, 0-5 Al2O3, 0-10 GeO2, 0-5 ZrO2, 0-1 HfO2, 0-2 TiO2, 0-1 SnO2, 0-1 Nb2O5, 0-1 Ta2O5, 0.1-15 M2O (where M = Li, Na, K, Rb, Cs), 0-2 ZnO, 0-2 MgO, 0-5 MO (where M = Ca, Sr, Ba), 0-5 B2O3, 0-1 Pb2O5, 0-3 Ln2O3, 0.0001-1 Ag2O and/or 0.0005-1 Au2O3, 0.005-1 CuO. The glass pref. comprises 10-80 SiO2, 3-85 PbO, 0-5 Al2O3, 0-3 ZrO2, 0-1.5 TiO2, 0.5-15 M2O (M = Li, Na, K, Rb, Cs),0-5 MO (M = Ca, Sr, Ba), 0-5 B2O3, 0.0002-0.05 Ag2O and/or 0.001-0.05 Au2O3, 0.01-0.05 CuO. USE/ADVANTAGE - Used in light display units. Glass is reproducible.