Patent ID: 6107224
Filing Date: 2000-08-22
Classification: C03C

Abstract:
A glass composition exhibiting high radiation heat transfer resistance in the 4-40 .mu.m infrared range, said composition comprising, in weight percent relative to the total composition weight:50-60% SiO.sub.24-6% Al.sub.2 O.sub.313-16% B.sub.2 O.sub.32-10% CaO1-8% MgO10-18% Na.sub.2 O0-3 % K.sub.2 O0-2% F.sub.2said glass composition having an HTV (10.sup.3 poise) suitable for rotary fiberization, a liquidus which is lower than the HTV by at least 80.degree. F., and a total radiation heat extinction efficiency greater than 0.1139 in the wavelength range of 4-40 .mu.m.