High-gloss multilayer effect pigments having a non-silver interference color and a narrow size distribution, and method for the production thereof

High-gloss multilayer effect pigments having a non-silver interference color and a narrow size distribution, and method for the production thereof

  • CN 102,282,219 A
  • Filed: 08/09/2010
  • Published: 12/14/2011
  • Est. Priority Date: 08/19/2009
  • Status: Active Grant
First Claim
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1. multilayer nacreous pigment, comprising provides the sheet of optical activity coating transparent substrates, it is characterized in that described optical activity coating comprises at least:

  • (a) the nonabsorbable high refractive index layer A of refractive index n 〉

    =1.8,(b) the low-index layer B of refractive index n<

    1.8,(c) the nonabsorbable high refractive index layer C of refractive index n 〉

    =1.8, and(d) at least one external protection D randomly,And the cumulative frequency that described multilayer nacreous pigment has the volume averaging size distribution function distributes, and it has index D 10, D 50, D 90With the span Δ

    D in the 0.7-1.4 scope, wherein said span Δ

    D calculates according to formula (I);

    Δ

    D=

    (D 90-D 10)/D 50 (I)。

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