Fire resistant glass fiber

Details Fire resistant glass fiber Fire resistant glass fiber

C - Chemistry, Metallurgy

03

C

C03C 3/083 (2006.01) C09K 21/02 (2006.01)

Patent

CA 2638653

A glass fiber composition comprises about 33-47 weight% SiO2; about 18-28 weight% Al2O3; about 5-15 weight% Fe2O3; greater than or equal to about 2 weight% and less than 10 weight% R2O; about 8-30 weight% CaO; and less than 4 weight% MgO; wherein R2O represents alkali metal oxides. Preferably, the glass fiber composition has a liquidus temperature of less than 2350°F; and a viscosity at a liquidus temperature of the glass fiber composition of greater than 500 poise; and fire resistant glass fiber formed from the glass fiber composition has a biodissolution rate of greater than 50 ng/cm2/hr.

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