Method of making colored photochromic glasses

Details Method of making colored photochromic glasses Method of making colored photochromic glasses

1988-02-26

1989-05-23

Lindsay, Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 323, 501 13, C03C 2100

Patent

active

048327247

ABSTRACT:
A method for modifying surface coloration in silver halide-containing photochromic glasses developed by thermal reduction treatments is described, which method comprises subjecting the glass, prior to the coloring thermal reduction treatment, to a silver ion exchange treatment during which silver ions are introduced into at least a portion of the surface of the glass article. Subsequent thermal reduction of the silver-containing surface portion of the glass provides novel colors and/or color patterns therein.

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patent: 4190451 (1980-02-01), Hares et al.
patent: 4240836 (1980-12-01), Borrelli et al.
patent: 4390592 (1983-06-01), Ernsberger
patent: 4405672 (1983-09-01), Araujo et al.
patent: 4537612 (1985-08-01), Borrelli et al.

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