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Nacreous pigments having improved light fastness, their preparation and use

  • US 4,565,581 A
  • Filed: 12/27/1982
  • Issued: 01/21/1986
  • Est. Priority Date: 12/24/1981
  • Status: Expired due to Fees
First Claim
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1. Nacreous pigments having improved light fastness comprising mica platelets whose surfaces are coated with a layer comprising titanium dioxide and which are coated with a thin top layer comprising manganese oxide, wherein the amount of manganese oxide is about 0.05-0.5% by weight, relative to total pigment weight.

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