LEAD-FREE FINE CRYSTAL GLASSWARE

摘要

This invention relates to fine glass crystal prepared from lead-free glass compositions. The glasses consist essentially, in weight percent, of SiO2 54-64 BaO 8-13 Li2O 0-3 SrO 8-13 Na2O 0-6.5 ZnO 5.5-9 K2O 0-7 BaO+SrO+ZnO 22-33 Li2O+Na2O+K2O 8-15 wherein at least two of Li2O, Na2O, and K2O are present and are present in essentially equimolar ratios.