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1. WO2000043457 - COLOUR EFFECT PIGMENTS AND METHOD OF FORMING THE SAME

Publication Number WO/2000/043457
Publication Date 27.07.2000
International Application No. PCT/EP2000/000278
International Filing Date 15.01.2000
Chapter 2 Demand Filed 20.04.2000
IPC
C09C 1/00 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; PREPARATION OF CARBON BLACK
1Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
C09C 1/62 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; PREPARATION OF CARBON BLACK
1Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
62Metallic pigments or fillers
CPC
C01P 2004/20
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
20extending in two dimensions, e.g. plate-like
C01P 2004/54
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
54Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
C01P 2004/61
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
60Particles characterised by their size
61Micrometer sized, i.e. from 1-100 micrometer
C01P 2006/60
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2006Physical properties of inorganic compounds
60Optical properties, e.g. expressed in CIELAB-values
C09C 1/0015
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
1Treatment of specific inorganic materials other than fibrous fillers
0015Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
C09C 1/0021
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
1Treatment of specific inorganic materials other than fibrous fillers
0015Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
0021comprising a core coated with only one layer having a high or low refractive index
Applicants
  • CIBA SPECIALTY CHEMICALS HOLDING INC. [CH/CH]; Klybeckstrasse 141 CH-4057 Basel, CH
Inventors
  • POLONKA, Jack; US
  • BUJARD, Patrice; CH
  • BONNARD, Natacha; CH
  • HERREN, Fritz; CH
Priority Data
60/177,00825.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COLOUR EFFECT PIGMENTS AND METHOD OF FORMING THE SAME
(FR) PIGMENTS A EFFET DE COULEUR ET LEUR PROCEDE DE FABRICATION
Abstract
(EN)
A metallic effect pigment including a metallic, corrosion resistant reflective core of reflectivity from 40 % to 80 %; having deposited thereupon at least one dielectric coating layer formed of at least one metal oxide, the metal oxide layer having been formed by deposition on the core by hydrolysis of a hydrolyzable metal salt in a strongly acidic aqueous medium, and thereafter full transformation into the oxide by calcination.
(FR)
L'invention concerne un pigment à effet métallique comprenant : un noyau métallique réfléchissant et résistant à la corrosion, présentant une réflectivité de 40 % à 80 %; au moins une couche d'enrobage diélectrique déposée sur ledit noyau, constituée d'au moins un oxyde métallique, formée par dépôt par hydrolyse sur le noyau d'un sel métallique hydrolysable dans un milieu aqueux très acide, puis par transformation totale en oxyde par calcination.
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