Deep gray colored glass

Details Deep gray colored glass Deep gray colored glass

1995-10-04

1998-03-10

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C03C 387

Patent

active

057261091

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 Fe.sub.2 O.sub.3, at most 0.21 part by weight of FeO, from 0.05 to 1.0 part by weight of TiO.sub.2, 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 SiO.sub.2, from 0.1 to 5.0 wt % of Al.sub.2 O.sub.3, from 10 to 18 wt % of Na.sub.2 O+K.sub.2 O, from 5 to 15 wt % of CaO, from 1 to 6 wt % of MgO and from 0.05 to 1.0 wt % of SO.sub.3.

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Database WPI, Derwent Publications, AN-94-321988, JP-A-06-247740, Sep. 6, 1994.

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