Abstract: Glass beads in accordance with the present invention may be constituted of SiO.sub.2, Al.sub.2 O.sub.3, Na.sub.2 O, K.sub.2 O, BaO, SrO, TiO.sub.2, and CeO.sub.2. The glass of which the glass beads is made will generally contain at least 40% SiO.sub.2 as the network former, from about 10 to about 25% Na.sub.2 O and K.sub.2 O as fluxes, from about 5 to about 25% of BaO and/or SrO as a fracture resistance improvement components, a small amount of Al.sub.2 O.sub.3, and--when made from CRT waste--very small amounts of TiO.sub.2 and CeO.sub.2. The glass beads of the invention are suitable for use as reflective elements in roadway markings and as media in shot-peening metal cleaning procedures.
Type:
Grant
Filed:
February 6, 1995
Date of Patent:
October 7, 1997
Assignee:
Conversion Technologies International, Inc.