Patent · US Expired

Coating with organic dyes

US5156678A · kind A · utility

8Cited by

4References

15Claims

0Family size

Assignee

MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventor

Ralf Glausch · Darmstadt, DE

Key dates

Filing date	Mar 25, 1991
Grant date	Oct 20, 1992
Priority date	—
Expiry date	Mar 25, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09C2200/404
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Effect pigments based on interference pigments coated with phthalocyanine or metal phthalocyanine dyes, characterized in that the dyes are applied to the pigments as a strongly adhering film without the aid of binders or other auxiliary materials, are outstandingly suitable for use in formulations such as paints, dyes, plastics and cosmetics.

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