Infrared and ultraviolet radiation absorbing blue glass composition
First Claim
1. A blue colored, infrared and ultraviolet radiation absorbing glass composition having a base glass portion comprising:
- SiO2 about 66 to 75 percent by weightNa2 O about 10 to 20 percent by weightCaO about 5 to 15 percent by weightMgO 0 to about 5 percent by weightAl2 O3 0 to about 5 percent by weightK2 O 0 to about 5 percent by weightand a solar radiation absorbing and colorant portion consisting essentially of;
total iron about 0.53 to 1.1 percent by weightCoO about 5 to 40 PPMCr2 O3 0 to about 100 PPM,the glass having a redox of about 0.25 to 0.35, a luminous transmittance of at least 55%, and a color characterized by a dominant wavelength of 485 to 489 nanometers and an excitation purity of about 3 to 18 percent.
6 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a blue colored glass using a standard soda-lime-silica glass base composition and additionally iron and cobalt as solar radiation absorbing materials and colorants. In particular, the blue colored glass includes about 0.53 to 1.1 wt. % total iron, preferably about 0.6 to 0.85 wt. % and about 5 to 40 PPM CoO, preferably about 15 to 30 PPM and a luminous transmittance of at least 55%. If desired, the composition may include up to about 100 PPM Cr2 O3. The redox ratio for the glass of the present invention is maintained between about 0.25 to 0.35, preferably between about 0.28 to 0.33. The glass color is characterized by a dominant wavelength (DW) of about 485 to 491 nanometers and an excitation purity (Pe) of about 3 to 18 percent. In one particular embodiment of the invention, the color of the glass is characterized by a dominant wavelength in the range of about 487 to 489 nanometers and an excitation purity of about 3 to 8 percent at a thickness of about 0.084 to 0.126 inches, an excitation purity of about 5 to 12 percent at a thickness of about 0.126 to 0.189 inches, and an excitation purity of about 10 to 18 percent at a thickness of about 0.189 to 0.315 inches.
-
Citations
38 Claims
-
1. A blue colored, infrared and ultraviolet radiation absorbing glass composition having a base glass portion comprising:
-
SiO2 about 66 to 75 percent by weight Na2 O about 10 to 20 percent by weight CaO about 5 to 15 percent by weight MgO 0 to about 5 percent by weight Al2 O3 0 to about 5 percent by weight K2 O 0 to about 5 percent by weight and a solar radiation absorbing and colorant portion consisting essentially of; total iron about 0.53 to 1.1 percent by weight CoO about 5 to 40 PPM Cr2 O3 0 to about 100 PPM, the glass having a redox of about 0.25 to 0.35, a luminous transmittance of at least 55%, and a color characterized by a dominant wavelength of 485 to 489 nanometers and an excitation purity of about 3 to 18 percent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A blue colored, infrared and ultraviolet radiation absorbing glass composition having a base glass portion comprising:
-
SiO2 about 66 to 75 percent by weight Na2 O about 10 to 20 percent by weight CaO about 5 to 15 percent by weight MgO 0 to about 5 percent by weight Al2 O3 0 to about 5 percent by weight K2 O 0 to about 5 percent by weight and a solar radiation absorbing and colorant portion consisting essentially of; total iron about 0.53 to 1.1 percent by weight CoO about 5 to 40 PPM SnO2 0 to about 2.0 percent by weight CeO2 0 to about 1.0 percent by weight TiO2 0 to about 0.5 percent by weight ZnO 0 to about 0.5 percent by weight Nd2 O3 0 to about 0.5 percent by weight MnO2 0 to about 0. 1 percent by weight MoO3 0 to about 100 PPM Cr2 O3 0 to about 100 PPM, V2 O5 0 to about 75 PPM NiO 0 to about 10 PPM Se 0 to about 3 PPM the glass having a redox of about 0.25 to 0.35, a luminous transmittance of at least 55%, and a color characterized by a dominant wavelength of 485 to 489 nanometers and an excitation purity of about 3 to 18 percent. - View Dependent Claims (19)
-
-
20. A blue colored, infrared and ultraviolet radiation absorbing glass composition having a base glass portion comprising:
-
SiO2 about 66 to 75 percent by weight Na2 O about 10 to 20 percent by weight CaO about 5 to 15 percent by weight MgO 0 to about 5 percent by weight Al2 O3 0 to about 5 percent by weight K2 O 0 to about 5 percent by weight and a solar radiation absorbing and colorant portion consisting essentially of; total iron about 0.53 to 1.1 percent by weight CoO about 5 to 40 PPM Cr2 O3 0 to about 100 PPM, the glass having a redox of about 0.25 to 0.35, a luminous transmittance of at least 65% at a thickness of 3.9 mm, and a color characterized by a dominant wavelength of about 485 to 491 nanometers and an excitation purity of about 3 to 18 percent. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A blue colored, infrared and ultraviolet radiation absorbing glass composition having a base glass portion comprising:
-
SiO2 about 66 to 75 percent by weight Na2 O about 10 to 20 percent by weight CaO about 5 to 15 percent by weight MgO 0 to about 5 percent by weight Al2 O3 0 to about 5 percent by weight K2 O 0 to about 5 percent by weight and a solar radiation absorbing and colorant portion consisting essentially of; total iron about 0.53 to 1.1 percent by weight CoO about 5 to 40 PPM SnO2 0 to about 2.0 percent by weight CeO2 0 to about 1.0 percent by weight TiO2 0 to about 0.5 percent by weight ZnO 0 to about 0.5 percent by weight Nd2 O3 0 to about 0.5 percent by weight MnO2 0 to about 0.1 percent by weight MoO3 0 to about 100 PPM Cr2 O3 0 to about 100 PPM, V2 O5 0 to about 75 PPM NiO 0 to about 10 PPM Se 0 to about 3 PPM the glass having a redox of about 0.25 to 0.35, a luminous transmittance of at least 65% at a thickness of 3.9 mm, and a color characterized by a dominant wavelength of about 485 to 491 nanometers and an excitation purity of about 3 to 18 percent. - View Dependent Claims (38)
-
Specification