Method of manufacturing copper mirrors

Details Method of manufacturing copper mirrors Method of manufacturing copper mirrors

1988-06-22

1991-01-01

Bell, Janyce

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

427305, 427424, 427426, 427427, B05D 506

Patent

active

049817205

ABSTRACT:
A method of manufacturing a mirror, including forming on a transparent glass sheet a copper reflective layer by chemical deposition from contact with a coppering solution; and coating the copper reflective layer with at least one protective layer effective to protect the copper reflective layer from corrosion by the atmosphere, wherein the copper reflective layer is formed under conditions effective to provide a mirror which, after having been subjected to a CASS Test for 120 hours, has a factor of luminous reflection which is at least 0.90 times what it was before the mirror was subjected to the CASS Test. The method may include the further steps of coating the transparent glass sheet prior to forming the copper reflective layer thereon with a sequestering solution, which sequestering solution sequesters reaction products of the coppering solution, to provide a wetted glass sheet; coating the wetted glass sheet with the coppering solution while the wetted glass sheet is still wet with the sequestering solution to thereby improve the mirror's resistance to aging; and rinsing the transparent glass sheet with water.

REFERENCES:
patent: 2977244 (1961-03-01), Kay et al.
patent: 3993845 (1976-11-01), Greenberg et al.
patent: 4255214 (1981-03-01), Workens

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