Patent ID: 6080694
Filing Date: 2000-06-27
Classification: C03C,Y10S

Abstract:
to 18% Na.sub.2 O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al.sub.2 O.sub.3, and 0 to 5% K.sub.2 O, where CaO+MgO is 6 to 15% and Na.sub.2 O+K.sub.2 O is 10 to 20%; and colorants consisting essentially of: greater than 0.5 to 1.5 wt. % total iron oxide as Fe.sub.2 O.sub.3, wherein the ratio of wt. % FeO/wt. % total iron as Fe.sub.2 O.sub.3 is below 0.26; 0.10 to 1.0 wt. % manganese oxide as MnO.sub.2 ; 0.0 to 0.016 wt. % cobalt oxide as Co; and 0.0005 to 0.004 wt. % selenium; the glass having at a 4.0 mm. thickness: 570-585 dominant wavelength; less than 35% ultraviolet transmittance measured over 300-400 nm; less than