Unleaded transparent vitreous glass composition and articles

Details Unleaded transparent vitreous glass composition and articles Unleaded transparent vitreous glass composition and articles

C - Chemistry, Metallurgy

03

C

C03C 3/091 (2006.01) C03C 3/093 (2006.01) C03C 4/00 (2006.01)

Patent

CA 2155111

The present invention relates to an unleaded durable transparent vitreous glass composition comprising a combination of (a) up to 98 wt. % of a low alumina alkali borosilicate, (b) 2-20 wt. % of a major addition of one element selected from the group of zirconium, tin and titanium, and (c) less than 10 wt. % of at least one element selected from bismuth, barium, strontium, zinc, lanthanum, molybdenum, cerium and/or a fluoride containing inorganic compound wherein the amounts of (a), (b) and (c) are calculated on the basis of the total amount of the oxide forms of (a), (b) and (c), a process for its production and the use of said composition.

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