UV-absorbing borosilicate glass for a gas discharge lamp and process for manufacturing same

2232322222232 2233233232342−-−22223222323 32223223 Glass for gas discharge tubes, which are used in fluorescent lamps, EEFL lamps, LCD displays, computer monitors, telephone displays and TFT displays, and a process for making it are described. The glass contains, in % by weight based on oxide content: SiO, 60-75; BO, >25-35; AlO, 0-10; LiO, 0-10; NaO, 0-20; KO, 0-20; MgO, 0-8; CaO, 0-20; SrO, 0-5; BaO, 0-5; ZnO, 0-3; ZrO, 0-5; TiO, 0-10; FeO, 0-0.5; CeO0-0.5; MnO, 0-1.0; NdO, 0-1.0; WO, 0-2; BiO, 0-5; MoO, 0-5; AsO, 0-1; SbO, 0-1; SO, 0-2; Cl, 0-2 and F, 0-2, wherein ΣLiO+NaO+KO=0-25% by weight; ΣMgO+CaO+SrO+BaO=0-20; ΣFeO+CeO+TiO+PbO+AsO+SbOis at least 0-10; and ΣPdO+PtO+PtO+PtO+RhO+RhO+IrO+IrOis from 0.00001-0.1.