Method for making thermally tempered glass comprising a...

Details Method for making thermally tempered glass comprising a... Method for making thermally tempered glass comprising a...

2006-10-31

2006-10-31

Bashore, Alain L. (Department: 1762)

Coating processes

Optical element produced

C427S163100, C427S165000, C427S168000, C427S169000, C427S226000, C427S372200, C427S376200, C427S377000, C427S379000, C427S380000, C427S397700, C065S060100, C065S060500, C065S060530, C065S114000, C065S117000

Reexamination Certificate

active

07128944

ABSTRACT:
The invention relates to thermally tempered safety glass comprising an non-abrasive and porous SiO2layer which is stable during sintering and has a refractive index of between 1.25 and 1.40. The inventive safety glass can be obtained by coating standard soda-lime glass with an aqueous coating solution having a pH value of between 3 and 8 and containing between 0.5 and 5.0 wt. % of [SiOx(OH)y]nparticles (0<y<4 and 0<x<2) having a particle size of between 10 and 60 nm, and a surfactant mixture. The coated glass is then dried, thermally hardened at temperatures of at least 600° C. for several minutes, and thermally tempered by a flow of air.

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