Patent · US Expired

Carbon-containing luster pigments

US5501731A · kind A · utility

12Cited by

8References

3Claims

0Family size

Assignee

BASF SE

Inventors

Raimund Schmid · Neustadt, DE
Norbert Mronga · Dossenheim, DE
Werner Ostertag · Havelsee, DE
Helmut Schmidt · Riegelsberg, DE

Key dates

Filing date	Jun 27, 1994
Grant date	Mar 26, 1996
Priority date	—
Expiry date	Jun 27, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09C2200/102
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Luster pigments comprising coated, plateletlike, silicatic substrates wherein the coating comprises a layer consisting essentially of carbon and aluminum oxide, chromium oxide, cerium oxide, zirconium oxide, antimony oxide or mixtures thereof, are obtainable by applying carbon-containing compounds of the metals aluminum, chromium, cerium, zirconium, antimony or mixtures thereof with or without further carbon-containing compounds of the molecular formula (CH.sub.2 O).sub.n, where n is from 1 to 6 for one monomeric unit, to the substrate particles and then thermally decomposing the carbon-containing compounds on the surface of the substrate particles under oxygen-excluding conditions.

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