초록 ▼

A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result o

A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.

대표청구항 ▼

The invention claimed is: 1. A glass comprising: total iron (expressed Fe2O3): 0.01 to 0.20% cobalt oxide: 0.1 to 15 ppm glass redox: wherein the glass has a visible transmission of at least about 85%, the glass is decolorized so as to have a* and b* values from-0.5 t

The invention claimed is: 1. A glass comprising: total iron (expressed Fe2O3): 0.01 to 0.20% cobalt oxide: 0.1 to 15 ppm glass redox: wherein the glass has a visible transmission of at least about 85%, the glass is decolorized so as to have a* and b* values from-0.5 to +0.5, and wherein the glass includes one of 0.07%, 0.06% or 0% cerium oxide. 2. The glass of claim 1, comprising: total iron (expressed Fe2O3): 0.01 to 0.15% cobalt oxide: 0.3 to 10 ppm glass redox: % FeO: 0.0001 to 0.05%. 3. The glass of claim 1, further comprising from 0 to 10 ppm chromium oxide, and from 0 to 0.2% titanium oxide. 4. The glass of claim 1, wherein the glass has a visible transmission of at least 88%. 5. The glass of claim 1, wherein the glass has a visible transmission of at least 90%, and a UV % transmission of no greater than about 75%. 6. A glass comprising: total iron (expressed Fe2O3): 0.01 to 0.20% glass redox: chromium oxide: 1 to 5 ppm % FeO: 0.001-0.003 wherein the glass has a visible transmission of at least about 85%, is decolorized so as to have a* and b* values from-0.5 to +0.5, and wherein the glass includes no cerium oxide. 7. The glass of claim 6, comprising: total iron (expressed Fe2O3): 0.01 to 0.15% cobalt oxide: 0.3 to 10 ppm glass redox: 8. The glass of claim 6, further comprising from 0 to 10 ppm chromium oxide, and from 0 to 0.2% titanium oxide. 9. The glass of claim 6, wherein the glass has a visible transmission of at least 88%. 10. The glass of claim 6, wherein the glass has a visible transmission of at least 90%.