Alkali free glass

Details Alkali free glass Alkali free glass

1993-11-16

1994-09-20

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 68, 501 69, 501 70, 501 72, 501 67, C03C 3091

Patent

active

053489160

ABSTRACT:
An alkali free glass consisting essentially of from 50 to 60 wt % of SiO.sub.2, from 8 to 16 wt % of Al.sub.2 O.sub.3, from 4 to 10 wt % of B.sub.2 O.sub.3, from 1.5 to 5 wt % of MgO, from 0 to 7 wt % of CaO, from 0 to 10 wt % of SrO, from 10 to 20 wt % of BaO and from 0 to 3 wt % of ZnO and essentially free from alkali metal oxides.

REFERENCES:
patent: 3326703 (1967-06-01), Harrington
patent: 4327220 (1982-04-01), Orvik
patent: 4409337 (1983-10-01), Dumbaugh, Jr.
patent: 4499276 (1985-02-01), Malhotra et al.
patent: 5244847 (1993-09-01), Kushitani et al.

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