Use of a borosilicate glass for gas discharge lamps, a process for its production as well as a so obtained glass

摘要

It is a glass for gas-discharge tubes is described, a process for its preparation and its use for the production of fluorescent lamps, eefl - lamps, lcd - displays, computer monitors, telephone display, as well as of tft - displays. The glass containsSio₂ 60 - 75 Wt..-%,B₂O₃ 25 - 35% By.-%,Al₂O₃ 0 - 10 Wt..-%,Li₂O 0 - 10 wt..-%,Na₂O 0 - 20 wt..-%,K₂O 0 - 20 w -%, wherein theΣ li₂O + na.sub.2₂O + k₂O 0 - 25 w -%, andMgo 0 - 8 wt..-%,Cao 0 - 20 wt..-%,Sro 0 - 5% by.-%,Bao 0 - 5 w -%, wherein theΣ mgo + cao + sro + bao 0 - 20 w -%, andZno 0 - 3% by.-%,Zro₂ 0 - 5 W -%, as well asTio₂ 0 - 10 Wt..-%Fe₂O₃ 0 - 0,5%.-%,Ceo₂ 0 - 0,5%.-%,Mno₂ 0 - 1,0%.-%,Nd₂O₃ 0 - 1,0%.-%,Where₃ 0 - 2% By.-%,Bi₂O₃ 0 - 5% By.-%, ..