USE OF INTERFERENCE PIGMENTS IN THE MANUFACTURE OF FORGERY-PROOF SECURITIES

    公开(公告)号:CA2143940C

    公开(公告)日:2004-06-15

    申请号:CA2143940

    申请日:1993-11-30

    Applicant: BASF AG

    Abstract: Interference pigments based on multiply coated plateletlike silicatic substrates comprising A) a first layer comprising a colorless or selectively absorbing metal oxide with a high refractive index, B) a second, non-selectively absorbing, semitransparent layer consisting essentially of carbon, a metal or a metal oxide, and optionally C) a third layer comprising a colorless or selectively absorbing metal oxide in combination with scattering color pigments which are complementary in color to the reflection color of the interference pigments are useful for preparing valuable documents that are forgeryproof.

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