Patent · US Expired

Goniochromatic luster pigments which are based on titanium dioxide-coated siliceous platelets heated in a reductive atmosphere

US6620233B1 · kind B1 · utility

18Cited by

2References

10Claims

0Family size

Assignee

BASF SE

Inventors

Oliver Seeger · Mannheim, DE
Raimund Schmid · Neustadt, DE
Norbert Mronga · Dossenheim, DE
Jorg Adel · Ludwigshafen, DE

Key dates

Filing date	Apr 23, 2002
Grant date	Sep 16, 2003
Priority date	—
Expiry date	Apr 23, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09C2220/20
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Goniochromatic luster pigments are based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere and which comprise at least one layer packet comprisingA) a colorless coating having a refractive index n&lE;1.8 andB) a coating which has a refractive index n&gE;2.0, which includes iron(III) oxide and which selectively absorbs visible light.

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