Patent ID: 6524381
Filing Date: 2003-02-25
Classification: C01P,C09C,C09D,C23C,Y10T

Abstract:
A method of forming a pigment composition, comprising:placing an inorganic powdered substrate material in a vacuum chamber containing one or more coating material vaporization sources, the powdered substrate material selected from the group consisting of MgF2/Al/MgF2 platelets, SiO2/Al/SiO2 platelets, solgel-SiO2/Al/SiO2-solgel platelets, interference glass flakes, and combinations thereof; generating a coating material vapor from the one or more coating material vaporization sources in a dry vacuum process; exposing the powdered substrate material to the coating material vapor in a substantially uniform manner; and forming a coalescence film of one or more layers of coating material on the powdered substrate material that substantially replicates a surface microstructure of the powdered substrate material.