Integral vitreous article composed of opaque and transparent por

Details Integral vitreous article composed of opaque and transparent por Integral vitreous article composed of opaque and transparent por

1979-12-13

1982-06-22

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428426, 428428, 65 33, 501 18, 501 68, B32B 900, B32B 1700

Patent

active

043363032

ABSTRACT:
There is disclosed an integral vitreous article composed of an opaque portion encased within a thin surface layer of transparent, colored glass. The article has a uniform chemical composition of an alkaline aluminosilicate nature, the opaque portion contains light scattering particles of a titaniferous nature, and the surface layer contains a titania coupled colorant. The article may be produced by simultaneously forming an article and quenching its surface whereby differential heat extraction produces the transparent surface layer.

REFERENCES:
patent: 2683666 (1954-07-01), Duncan et al.
patent: 2691855 (1954-10-01), Armistead
patent: 3493355 (1970-02-01), Wu
patent: 3709705 (1973-01-01), Hagerdon
patent: 3741861 (1973-06-01), Andrieu
patent: 4000998 (1977-01-01), Rittler

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