C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
261/16
C03C 13/00 (2006.01)
Patent
CA 1193290
Abstract of the Disclosure The fiber glass has a composition consisting essentially of: APPROXIMATE RANGES % BY WEIGHT Si02 53 to 63% A12O3 3 to 7% B2O3 5 to 10% Na2O 10 to 15.5% K2O 0 to 2.5% CaO 6 to 12% MgO 0 to 6% BaO 0 to 6%; the composition additionally including one or the other or both of, by weight, Li2O up to about 2% F up to about 1.2%; the aggregate amount of the Na20 and Li20 not exceeding about 16.4% by weight, the aggregate amount of the Na20, K20 and Li2O not exceeding about 18% by weight, the aggregate amount of the CaO, MgO and BaO being from about 8% by weight to about 18% by weight, of which at least about 60% is CaO, and the aggregate amount of Li2O and F being at least about .4% by weight.
421883
Macrae & Co.
Manville Service Corporation
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