Interference pigments on the basis of silicon oxides

Details Interference pigments on the basis of silicon oxides Interference pigments on the basis of silicon oxides

2011-06-14

2011-06-14

Green, Anthony J (Department: 1731)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S426000, C106S431000, C106S434000, C106S442000, C106S482000, C428S403000, C428S404000

Reexamination Certificate

active

07959727

ABSTRACT:
The present invention relates to pigments, the particles of which generally have a length of from 2 μm to 5 mm, a width of from 2 μm to 2 mm, and a thickness of from 20 nm to 2 μm, and a ratio of length to thickness of at least 2:1, wherein the particles contain a core of SiO2or a silicon/silicon oxide obtained by heating SiOyflakes with 1.1≦y≦1.8 in an oxygen-free atmosphere at a temperature of at least 400° C., which core has a narrow distribution of particle sizes and two substantially parallel faces, the distance between which is the shortest axis of the core, and a material layer having a high index of refraction a metal oxide; a process for their production and their use in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass.

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