Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 4, 2007
Patent Application Number
10954359
Date Filed
October 1, 2004
Patent Citations Received
...
Patent Primary Examiner
Patent abstract
The present invention relates to lustrous black interference pigments based on a substrate mixture, characterised in that it has(A) a coating of Fe3O4 (B) a colorless coating consisting of one or more layers each having a refractive index of n≦1.8,(C) optionally a coating with an absorbent, high-refractive-index material which only covers part of the surface,and optionally(D) an outer protective layer,and to the use thereof in paints, coatings, powder coatings, printing inks, plastics, ceramic materials, glasses, for the laser marking of papers and plastics, in cosmetic formulations and for the preparation of pigment compositions and dry preparations.
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