Patents

MERCK PATENTS LUSTROUS

MERCK PATENTS LUSTROUS
BLACK INTERFERENCE PIGMENTS
Patent No. U.S. 7,303,622 B2
Merck Patent has received a
patent for lustrous black interference
pigments comprised of a mixture
of different substrates having a
coating of Fe3O4; a colorless coating
consisting of one or more layers each
having a refractive index of n<1.8; a
coating with an absorbent, highrefractive-
index material which contains
Fe3O4, a black sulfide, a black
oxynitride or a mixture thereof, and
which only covers part of the underlying
surface; and optionally an
outer protective layer.

Add us as a preferred source on Google

Get the latest Coatings World news, insights and analysis in your Google Search and AI experiences.

Keep Up With Our Content. Subscribe To Coatings World Newsletters

Topics