Interference pigments with light absorbing layer

An interference pigment (P1) having a mass tone comprises a flake-form substrate with successive coatings of: (A) a colorless coating having a refractive index of greater than 1.8 in a layer thickness of 20-250 nm; (B) a colorless coating having a refractive index of = 1.8 in a layer thickness of 10...

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Bibliographic Details
Main Authors LOCH, MANUELA, HEIDER, LILIA, ANSELMAN, RALF, SCHUPP, NICOLE, RICK, NORBERT
Format Patent
LanguageEnglish
French
German
Published 03.11.2010
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
PREPARATION OF CARBON BLACK
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:An interference pigment (P1) having a mass tone comprises a flake-form substrate with successive coatings of: (A) a colorless coating having a refractive index of greater than 1.8 in a layer thickness of 20-250 nm; (B) a colorless coating having a refractive index of = 1.8 in a layer thickness of 10-100 nm; (C) a colorless coating having a refractive index of greater than 1.8 in a layer thickness of 20-250 nm; (D) an absorbent layer having a layer thickness of 1-100 nm; and (E) optionally, an outer protective layer. Independent claims are included for the following (1) a process for producing the interference pigment involving coating the flake-form substrate by a wet-chemical method of hydrolytic decomposition of metal salts in aqueous medium or by a CVD or PVD process; (2) a pigment composition comprising at least one (P1), binders and optionally one additive.
Bibliography:Application Number: EP20040004329