The Universal Selection Source: Coatings Ingredients

Patent

EFFECT PIGMENTS


Application Date:
Jun 27, 2013
USPTO Patent:
US 13721212
Abstract:

The present invention relates to effect pigments which are based on flake-form substrates having a circular form factor of 1.2-2 and are coated with at least one high-refractive-index layer, and to the use thereof, ...

Inventors:
Gerhard PFAFF, Muenster (DE)
Stephanie ANDES, Hanau (DE)
Klaus AMBROSIUS, Dieburg (DE)
Ralf PETRY, Griesheim (DE)
Michael ROESLER, Reinheim (DE)
Sabine SCHOEN, Herten (DE)
International Classification:
C09C 1/28 (20130627); A61Q 19/00 (20130627); A61K 8/02 (20130627)
US Classification:
424/401; 106/417; 106/418; 510/130; 524/430; 241/ 21; 426/540; 426/ 72

Claims

What is claimed is:

1. An effect pigment comprising a flake-form substrate having a circular form factor of circumference2/area standardized to a circle of 1.2-2 coated with at least one high-refractive-index layer having a refractive index of n≧1.8.

Description

SUMMARY OF INVENTION

The present invention relates to effect pigments which are based on flake-form substrates having a circular form factor of 1.2-2 and are coated with at least one high-refractive-index layer, and to the use thereof, inter alia in paints, coatings, printing inks, plastics, and in cosmetic formulations.

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