Glass composition suitable for use in a fluorescent lamp, lamp e

Details Glass composition suitable for use in a fluorescent lamp, lamp e Glass composition suitable for use in a fluorescent lamp, lamp e

1997-05-12

1999-07-20

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 64, 501 70, 501 72, 313480, 313636, 313639, 313493, C03C 3083, C03C 3085, C03C 3087

Patent

active

059255820

ABSTRACT:
A novel type of glass having a low sodium content (<0.1 wt. % Na.sub.2 O), which can be used as a bulb glass (10) for "TL" lamps and for compact fluorescent lamps. Said glass is free of the toxic and/or corrosive components PbO, F, As.sub.2 0.sub.3 and Sb.sub.2 0.sub.3. Apart from favorable properties as regards phosphor poisoning and mercury absorption, resulting in a favorable maintenance of the lamp, said glass is characterized by a wide working range W.R. (=T.sub.work -T.sub.soft), so that glass tubing can be readily made of said glass. By virtue of the low liquidus temperature (T.sub.liq), the glass can be drawn into glass tubing which is free of crystals.

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