UV-radiation absorbing glass with high chemical resistance, especially for a fluorescent lamp, and methods of making and using same

2232322222222223 3 2233 The chemically resistant borosilicate glass has the following composition (in % by weight): SiO, 67-74; BO, 5-10; AlO, 3-10; LiO, 0-4; NaO, 0-10; KO, 0-10; MgO, 0-2; CaO, 0-3; SrO, 0-3; BaO, 0-3; ZnO, 0-3; ZrO, 0-3; CeO, 0-1; with ΣLiO+NaO+KO=0.5 to 10.5 and ΣMgO+CaO+SrO+BaO+ZnO=0-6. The borosilicate glass is characterized by a composition including 0 to 10% of at least one of TiO, BiOand MoOand a sum total of TiO+BiO+MoOof 0.1 to 10%. This glass is obtained from the melt under oxidative conditions. The glass is useful in gas discharge lamps, such as Xenon lamps and fluorescent lamps, and display devices, flat structured backlighting devices, and glass-to-metal seals with Mo, Wo and Ni-Fe-Co alloys.