Metal preparation and coatings made therefrom
AssigneeMerck Patent GmbH
InventorKhwan Khung LIM
Life of this patent
Estimating the term…
Abstract
The present invention is directed to metal preparations containing metal particles, in particular noble metal particles, to the use of such metal preparations for the production of attractive metallic decorative elements on articles having an outer silicatic surface such as of porcelain, ceramic, china, bone china, glass or enamel, to metallic coatings on such substrates and to a process for the production of coatings of this kind.
Claims25
Metal preparation comprising
- A) from 5 to 60% by weight of metal particles wherein said metal particles
- (i) exhibit a d50 value, measured by the volume related laser diffraction method, in the range of from 30 to 300 nm,
- (ii) exhibit an average aspect ratio, measured by scanning electron microscopy or transmission electron spectroscopy, in the range of from 1.0 to 1.5, and
- (iii) are selected from Ag, Au, Ru, Ir, Pd, Pt, Cu Nb, or an alloy comprising at least one thereof,
- B) from 0.2 to 50% by weight of at least one organic compound of one or more elements selected from Si, Ge, B, P, Nb, Sn, Zn, Zr, Ti, Sb, Al, Bi, alkali metal or alkaline earth metal,
- C) from 10 to 85% by weight of a solvent,
- D) from 0.1 to 50% by weight of a polymeric binder, and
- E) from 0.01 to 30% by weight of at least one metal compound that is soluble in organic solvent, wherein the metal comprises at least one from Ag, Au, Ru, Ir, Pd, Pt, Os, and Rh,
- wherein the percentages are based on the total weight of the metal preparation.
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11-16. (canceled)
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Solid coating on a substrate, comprising, based on the total weight of the solid coating, at least 60%, preferably at least 80%, by weight of metal particles of at least one metal selected from Ag, Au, Ru, Ir, Pd, Pt, Cu, No, or an alloy comprising at least one thereof, and further comprising at least 5% by weight, based on the total weight of the solid coating, of a glass matrix comprising at least one oxide of SiO2, GeO2, B2O3, P4O10, NbO2, Nb2O3, SnO, SnO2, ZnO, ZrO2, TiO2, Al2O3, Bi2O3, Sb2O3, alkali metal oxide, and/or alkaline earth metal oxide.
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29-32. (canceled)
Dependencies are inferred from the claim text.