Silver coated mirror
AssigneeGlaverbel
InventorsPierre Laroche, Pierre Boulanger, Christian Dauby
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Abstract
A process for forming a silver coating on a surface of a vitreous substrate is described. The process comprises an activating step in which said surface is contacted with an activating solution, a sensitising step in which said surface is contacted with a sensitising solution, and a subsequent silvering step in which said surface is contacted with a silvering solution comprising a source of silver to form the silver coating. The process is characterised in that said activating solution comprises ions of at least one of bismuth (III), chromium (II), gold (III), indium (III), nickel (II), palladium (II), platinum (II), rhodium (III), ruthenium (III), titanium (III), vanadium (III) and zinc (II).
Claims15
A process for forming a silver coating on a surface of a vitreous substrate, comprising an activating step in which said surface is contacted with an activating solution, a sensitising step in which said surface is contacted with a sensitising solution, and a subsequent silvering step in which said surface is contacted with a silvering solution comprising a source of silver to form the silver coating, wherein said activating solution comprises ions of at least one of bismuth (III), chromium (II), gold (III), indium (III), nickel (II), palladium (II), platinum (II), rhodium (III), ruthenium (III), titanium (III), vanadium (III) and zinc (II).
A mirror comprising a vitreous substrate carrying a silver coating which is not covered with a protective layer of copper, the mirror exhibiting an average number of white specks of less than 10 per dm2, after having been subjected to the accelerated ageing CASS Test and/or the Salt Fog Test defined herein.
Dependencies are inferred from the claim text.