Deep gray colored glass
First Claim
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1. A deep gray colored glass comprising 100 parts by weight of matrix components and coloring components consisting essentially of:
- from 0.8 to 1.4 parts by weight of total iron calculated as Fe2 O3, at most 0.21 part by weight of FeO, from 0.05 to 0.095 part by weight of TiO2, from 0.0005 to 0.015 part by weight of Se and from 0.02 to 0.05 part by weight of CoO, wherein the deep gray colored glass has an excitation purity of 0.7-7%, and the matrix components comprise from 65 to 75 wt % of SiO2, from 0.1 to 5.0 wt % of Al2 O3, from 10 to 18 wt % of Na2 O+K2 O, from 5 to 15 wt % of CaO, from 1 to 6 wt % of MgO and from 0.05 to 1.0 wt % of SO3.
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Abstract
A deep gray colored glass comprising 100 parts by weight of matrix components and coloring components consisting essentially of: from 0.8 to 1.4 parts by weight of total iron calculated as Fe2 O3, at most 0.21 part by weight of FeO, from 0.05 to 1.0 part by weight of TiO2, from 0.0005 to 0.015 part by weight of Se and from 0.02 to 0.05 part by weight of CoO, wherein the matrix components comprise from 65 to 75 wt % of SiO2, from 0.1 to 5.0 wt % of Al2 O3, from 10 to 18 wt % of Na2 O+K2 O, from 5 to 15 wt % of CaO, from 1 to 6 wt % of MgO and from 0.05 to 1.0 wt % of SO3.
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Citations
9 Claims
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1. A deep gray colored glass comprising 100 parts by weight of matrix components and coloring components consisting essentially of:
- from 0.8 to 1.4 parts by weight of total iron calculated as Fe2 O3, at most 0.21 part by weight of FeO, from 0.05 to 0.095 part by weight of TiO2, from 0.0005 to 0.015 part by weight of Se and from 0.02 to 0.05 part by weight of CoO, wherein the deep gray colored glass has an excitation purity of 0.7-7%, and the matrix components comprise from 65 to 75 wt % of SiO2, from 0.1 to 5.0 wt % of Al2 O3, from 10 to 18 wt % of Na2 O+K2 O, from 5 to 15 wt % of CaO, from 1 to 6 wt % of MgO and from 0.05 to 1.0 wt % of SO3.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification