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US 2025/0188293 A1Published application
Al2o3 flakes
AssigneeMerck Patent GmbH
InventorsAtsuko Iwabuchi, Fumiko Sasaki, Satoru Kobayashi
Life of this patent
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Abstract
Pearlescent pigments with a superior flip flop effect which are based on defined Al2O3 flakes and the use thereof in paints, industrial coatings, automotive coatings, printing inks, cosmetic formulations and in particular as transparent substrate for effect pigments.
Claims16
Al2O3 flakes having an average particle diameter of 14-25 μm and a fraction of particle thickness of 40-130 nm greater than 40%.
Dependencies are inferred from the claim text.