Chemical strengthening of glass

Details Chemical strengthening of glass Chemical strengthening of glass

1975-08-15

1977-03-29

Lesmes, George F.

Stock material or miscellaneous articles

Surface property or characteristic of web, sheet or block

Surface modified glass

106 52, 65 30R, 65 30E, 428218, B32B 1700, C03C 2100

Patent

active

040150453

ABSTRACT:
Disclosed are improved glass compositions of the SiO.sub.2 --Na.sub.2 O--Al.sub.2 O.sub.3 --ZrO.sub.2 system for use in chemical strengthening. The improvement of the invention resides in proportioning the components so as to provide better melting glass compositions with lower liquidus temperatures and greater working ranges than normally associated with such systems. Such glasses are better suited for forming by the updraw or float methods.

REFERENCES:
patent: 3485702 (1969-12-01), Mochel
patent: 3498773 (1970-03-01), Grubb
patent: 3772135 (1973-11-01), Hara
patent: 3778335 (1973-12-01), Boyd
patent: 3790430 (1974-02-01), Mochel

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