Crystallized glass having natural-marble-like surface patterns a

Details Crystallized glass having natural-marble-like surface patterns a Crystallized glass having natural-marble-like surface patterns a

1991-01-02

1991-10-29

Fisher, Richard V.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 33, C03C 1004

Patent

active

050613073

ABSTRACT:
A crystallized glass having natural-marble-like surface patterns comprising 45 to 75 wt. % of SiO.sub.2, 1 to 25 wt. % of Al.sub.2 O.sub.3, 1 to 20 wt. % of CaO, 0.5 to 17 wt. % of MgO, 0.1 to 18 wt. % of BaO, 0 to 18 wt. % of ZnO, 1 to 15 wt. % of Na.sub.2 O, 0 to 7 wt. % of K.sub.2 O, 0 to 5 wt. % of Li.sub.2 O, 0 to 10 wt. % of B.sub.2 O.sub.3, 0 to 10 wt. % of P.sub.2 O.sub.5, 0 to 1 wt. % of As.sub.2 O.sub.3, and 0 to 1 wt. % of Sb.sub.2 O.sub.3, substantially free from nucleating agent, in which diopside type crystals are precipitated, and a method of producing the crystallized glass are disclosed.

REFERENCES:
patent: 3809543 (1974-05-01), Gaskell
patent: 3907577 (1975-09-01), Kiefer
patent: 3964917 (1976-06-01), Nakamura
patent: 4643982 (1987-02-01), Kasuga

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