Patent · US Expired

Inorganic spherical absorption pigments

US6866710B2 · kind B2 · utility

12Cited by

0References

18Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Lilia Heider · Riedstadt, DE
Martin Knapp · Dieburg, DE
Gisela Lenz · Pocking, DE
Norbert Rick · Darmstadt, DE

Key dates

Filing date	Dec 17, 2003
Grant date	Mar 15, 2005
Priority date	—
Expiry date	Dec 17, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2995
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to inorganic spherical absorption pigments which have a bimodal particle-size distribution, at least one color-providing layer and a final SiO2 layer, and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, as tracers, in cosmetic formulations and for the preparation of pigment preparations and dry preparations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.