Effect pigments based on thin SiO 2 flakes

Details Effect pigments based on thin SiO 2 flakes Effect pigments based on thin SiO 2 flakes

2007-08-14

2007-08-14

Green, Anthony J. (Department: 1755)

Compositions: coating or plastic

Materials or ingredients

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

C106S031900, C106S439000, C106S446000, C106S457000, C106S481000, C047S057600, C424S063000, C426S250000, C427S218000, C428S408000, C524S493000

Reexamination Certificate

active

11246564

ABSTRACT:
Effect pigments having improved optical properties based on SiO2flakes coated with one or more layers, where the SiO2flakes have a thickness of from 50 nm to 150 nm; processes for the preparation thereof; and use of these pigments in cosmetics, paints, coatings, plastics, films, in security printing, in security features in documents and identity cards, for coloring seed, for coloring foods or in medicament coatings and for the preparation of pigment compositions and dry preparations; are disclosed.

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patent: 07228515 (1995-08-01), None
patent: 09-71417 (1997-03-01), None
patent: WO93/08237 (1993-04-01), None
Machine Assisted Translation for JP7-228515-A (Aug. 29, 1995).
Machine Assisted Translation for JP0-71417-A (Mar. 18, 1997).

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