Process for preparing improved silvered glass mirrors

Details Process for preparing improved silvered glass mirrors Process for preparing improved silvered glass mirrors

1980-01-28

1981-08-25

Hoffman, James R.

Coating processes

Optical element produced

Transparent base

427168, B05D 136, B05D 134, C03C 1738, G02B 508

Patent

active

042859921

ABSTRACT:
Glass mirrors having improved weathering properties are prepared by an improvement in the process for making the mirrors. The glass surface after it has been cleaned but before it is silvered, is contacted with a solution of lanthanide rare earths in addition to a sensitization solution of tin or palladium. The addition of the rare earths produces a mirror which has increased resistance to delamination of the silver from the glass surface in the presence of water.

REFERENCES:
patent: 2899333 (1959-08-01), Gee et al.
Wein, "Sensitizing-A Process Used in Silvering", Jul. 1954.
Schweig, "Mirrors", Pelham Books, London, 1973.

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