Patent · US Active

Black effect pigment

US8728502B2 · kind B2 · utility

0Cited by

8References

20Claims

0Family size

Assignee

BASF SE

Inventors

James A. SIOSS · Beachwood, US
Thomas Chirayil · Knoxville, US
Betty Aucar · Ossining, US

Key dates

Filing date	Mar 14, 2012
Grant date	May 20, 2014
Priority date	—
Expiry date	Mar 14, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09C2200/1087
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

This disclosure is directed to a black effect pigment and a method of forming said pigment. The pigment comprises a platy substrate coated with SnO2 and/or SnO2 hydrates and Fe3O4 with an optional coating of metal oxides such as SiO2, TiO2, ZrO2 and ZnO2. The deposition of the SnO2 and/or SnO2 hydrates onto the substrate improves the adhesion and prepares the substrate surface for deposition of the iron oxides onto the platy surface, especially mica surfaces. While the pigment may be used in such applications as coating, powder coating, printing ink, plastic, ceramic material, glass, cosmetic formulation, laser marking pigment, pigment composition or dry preparation, the pigment is especially suitable for cosmetic applications.

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