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1. (WO1998053011) MULTI-COATED INTERFERENCE PIGMENTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053011 International Application No.: PCT/EP1997/002651
Publication Date: 26.11.1998 International Filing Date: 23.05.1997
IPC:
C08K 9/02 (2006.01) ,C09C 1/00 (2006.01) ,C09D 5/36 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
9
Use of pretreated ingredients
02
Ingredients treated with inorganic substances
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; PREPARATION OF CARBON BLACK
1
Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
D
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
5
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
36
Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
Applicants:
MERCK PATENT GMBH [DE/DE]; Postfach D-64271 Darmstadt, DE (AllExceptUS)
BRÜCKNER, Hans-Dieter [DE/DE]; DE (UsOnly)
HEYLAND, Andrea [DE/DE]; DE (UsOnly)
SCHMIDT, Christoph [DE/DE]; DE (UsOnly)
SCHANK, Christina [DE/DE]; DE (UsOnly)
SEIBEL, Claudia [DE/DE]; DE (UsOnly)
Inventors:
BRÜCKNER, Hans-Dieter; DE
HEYLAND, Andrea; DE
SCHMIDT, Christoph; DE
SCHANK, Christina; DE
SEIBEL, Claudia; DE
Common
Representative:
MERCK PATENT GMBH; Postfach D-64271 Darmstadt, DE
Priority Data:
Title (DE) MEHRSCHICHTIGE INTERFERENZPIGMENTE
(EN) MULTI-COATED INTERFERENCE PIGMENTS
(FR) PIGMENTS DE POLARISATION MULTICOUCHES
Abstract:
(DE) Mehrschichtiges Interferenzpigment, bestehend aus einem transparenten Trägermaterial, das mit alternierenden Schichten von Metalloxiden mit niedriger und hoher Brechzahl beschichtet ist, wobei die Differenz der Brechzahlen mindestens 0,1 beträgt, erhältlich durch alternierende Beschichtung des transparenten Trägermaterials mit einem Metalloxid mit hoher Brechzahl und einem Metalloxid mit niedriger Brechzahl im Naßverfahren durch Hydrolyse der entsprechenden, wasserlöslichen Metallverbindungen, Abtrennung, Trocknung und gegebenenfalls Kalzination der erhaltenen Pigmentes.
(EN) The invention relates to a multi-coated interference pigment consisting of a transparent carrier material which is coated with alternating metal oxide layers with a high and low refractive index, wherein the difference between the respective refractive indexes is 0.1. The inventive pigment can be obtained by alternately coating the transparent carrier material with a metal oxide with a high refractive index and a metal oxide with a low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, by separating, drying and optionally calcinating the pigment thus obtained.
(FR) L'invention concerne un pigment de polarisation multicouches, constitué d'un matériau de support transparent revêtu de couches alternées d'oxydes métalliques à faible et fort indice de réfraction, la différence des indices de réfraction atteignant 0,1, s'obtenant par enduction alternée du matériau de support transparent avec un oxyde métallique à fort indice de réfraction et un oxyde métallique à faible indice de réfraction, dans le cadre du procédé par voie humide, par hydrolyse des composés métalliques hydrosolubles correspondants, séparation, séchage et éventuellement calcination du pigment obtenu.
Designated States: BR, CA, CN, CZ, JP, KR, MX, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
KR1020000029464EP0948572US20050241530JP2000517374 CN1225657