Acid-resistant glass

Details Acid-resistant glass Acid-resistant glass

1996-08-28

1998-02-10

Speer, Timothy

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

501 33, 501 34, 501 53, 501 55, C03C 1202, B32B 518

Patent

active

057167060

ABSTRACT:
An acid-resistant glass article is provided comprising: about 25-45 wt-% SiO.sub.2 ; about 20-35 wt-% TiO.sub.2 ; less than about 5 wt-% B.sub.2 O.sub.3 ; about 15-40 wt-% of an alkaline earth modifier selected from the group consisting of BaO, SrO, and mixtures thereof; and no greater than about 25 wt-% of an alkali-metal oxide selected from the group consisting of Na.sub.2 O, K.sub.2 O, and mixtures thereof. The glass article is preferably in the form of a microsphere that is adapted for use as a retroreflective element in pavement markings.

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