Patent · US Expired

Thermostable zinc ferrite color pigments containing 0.05-0.5 wt % lithium, a process for their preparation and their use

US4985078A · kind A · utility

3Cited by

9References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Jakob Rademachers · Krefeld, DE
Volker Wilhelm · Bensberg, DE
Siegfried Keifer
Wilfried Burow · Krefeld, DE

Key dates

Filing date	May 30, 1989
Grant date	Jan 15, 1991
Priority date	—
Expiry date	May 30, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/60
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Thermostable pigments for coloring stoving lacquers, coil coat lacquers, plastics, sand granulates, lime sandstone, enamel or ceramic glazes are zinc ferrite color pigments containing from 0.01 to 0.5% by weight of lithium.

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