Patent ID: 6413893
Filing Date: 2002-07-02
Classification: C03C,Y10S

Abstract:
A green colored, infrared and ultraviolet radiation absorbing glass article having a composition comprising a base glass portion comprising:SiO2about 66 to 75 percent by weight,Na2Oabout 10 to 20 percent by weight,CaOabout 5 to 15 percent by weight,MgO0 to about 5 percent by weight,Al2O30 to about 5 percent by weight,K2O0 to about 5 percent by weight,and a solar radiation absorbing and colorant portion comprising:total ironabout 0.60 to 4 percent by weight,FeOabout 0.13 to 0.9 percent by weight,CoOabout 40 to 500 PPM,Seabout 5 to 70 PPM,Cr2O3about 15 to 800 PPM, andTiO20.1 to 1 percent by weight,the glass having a luminous transmittance (LTA) of up to about 60 percent, a total solar ultraviolet transmittance (TSUV) of about 40 percent or less, a total solar infrared transmittance (TSIR) of about 45 percent or less and a total solar energy transmittance (TSET) of about 50 percent or less and a dominant wavelength in the range of about 480 to 565 nanometers for any one thickness in the range from 1 to 10 millimeters.