Patent ID: 8563450
Filing Date: 2013-10-22
Classification: C03C

Abstract:
1. A glass fiber formed from a batch composition, said batch composition comprising: about 60.5 to about 70.5 weight percent SiO about 10 to about 24.5 weight percent Al about 11.96 to about 20 weight percent alkaline earth oxide, said alkaline earth oxide being the sum of MgO, CaO, SrO and BaO, wherein the amount of MgO in said alkaline earth oxide comprises at least 5 weight percent of said batch composition and the amount of CaO in said alkaline earth oxide comprises at least 6.96 weight percent of said batch composition; and 0 to about 3 weight percent alkali metal oxides, wherein said glass fiber has a ΔT of at least 135° F.