GLASS COMPOSITION FOR PRODUCTION OF INORGANIC FIBERS AND PRODUCTS OF FORMING THEREOF
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United States of America Patent
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app pub date -
Aug 13, 2007
filing date -
Oct 11, 2000
priority date (Note) -
Abandoned
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Abstract
A glass composition to be used for manufacturing inorganic fiber has a composition that entirely or partly eliminates the use of expensive boron oxide that is employed to lower the glass softening point and the viscosity. The glass composition contains 45 to 75 wt % of SiO.sub.2, 1 to 6 wt % of Al.sub.2O.sub.3, 0 to 4 wt % of MgO, 0 to 15 wt % of CaO, 0 to 6 wt % of B.sub.2O.sub.3, 0.1 to 10 wt % of BaO, 0.1 to 25 wt % of SrO, 5 to 17 wt % of Na.sub.2O, 0.5 to 10 wt % of K.sub.2O and 0 to 3.5 wt % of Fe.sub.2O.sub.3.
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